PROMETHEUS-LC™
Model PR-Z16-LC-ST
Low-Power PC/104 CPU Board With ZFx86 Processor
User Manual V1.0
Copyright 2003
Diamond Systems Corporation
8430-D Central Ave.
Newark, CA 94560
Tel (510) 456-7800
TABLE OF CONTENTS (CONTINUED)
12. I/O PANEL BOARD.............................................................................................. 28
12.1
12.2
12.3
12.4
12.5
12.6
12.7
12.8
Description ...................................................................................................................28
Panel Board I/O Connectors ........................................................................................29
Panel Board Cables .....................................................................................................29
Panel Board Hardware.................................................................................................29
Panel Board Power Connections .................................................................................30
Speaker and Miscellaneous Connector........................................................................31
Watchdog Timer...........................................................................................................32
Installation ....................................................................................................................32
13. FLASH DISK PROGRAMMER BOARD............................................................... 33
14. I/O CABLES.......................................................................................................... 34
15. VGA ACCESSORY BOARD................................................................................. 35
16. MOUNTING PROMETHEUS-LC ON A BASEBOARD ........................................ 36
17. PC/104 MECHANICAL DRAWING....................................................................... 38
Prometheus-LC CPU User Manual V1.0
Page 3
PROMETHEUS-LC
Low-Power PC/104 CPU Board with ZFx86 Processor
1. DESCRIPTION
Prometheus-LC is a PC/104 CPU board that offers low cost, low power consumption, and
extended temperature operation. It includes 4 serial ports and memory soldered onto the board.
DOS and application files can be stored directly in the 1MB on-board flash memory, eliminating
the need for a flashdisk module or hard disk drive. Prometheus-LC is an excellent choice for
DOS-based embedded applications where a low-cost, simple, single-board solution is required.
Prometheus-LC conforms to the PC/104 standard, an embedded computing standard that is
based on the ISA and PCI buses and provides a compact, rugged mechanical design for
embedded systems. PC/104 modules feature a pin and socket connection system in place of card
edge connectors, as well as mounting holes in each corner. The result is an extremely rugged
computer system fit for mobile and miniature applications. PC/104 modules stack together with
0.6” spacing between boards (0.662” pitch including the thickness of the PCB).
A mechanical drawing of a standard PC/104 board is shown on page 38. For more information on
Diamond Systems manufactures a wide variety of compatible PC/104 add-on boards for analog
I/O, digital I/O, counter/timer functions, serial ports, and DC/DC power supply. In addition, our
easy-to-use enclosure, Pandora, offers quick and cable-free assembly of the Prometheus-LC
family of CPU boards, providing a complete, packaged system ready to deploy in both industrial
and mobile environments.
Prometheus-LC CPU User Manual V1.0
Page 4
2. FEATURES
System Features
Processor Section
♦
♦
♦
♦
♦
♦
486-DX2 processor running at 100MHz with co-processor
Pentium class platform including burst-mode SDRAM and PCI-based IDE controller and USB
16MB SDRAM system memory
50MHz memory bus for improved performance
1MB 16-bit-wide flash memory for BIOS and user program storage
8KB unified level 1 cache
I/O
♦
4 RS-232 serial ports, 115.2kbaud max
- 2 ports are 16550-compatible with 16-byte FIFOs
- 2 ports are 16850-compatible with 128-byte FIFOs
2 full-featured powered USB 1.1 ports
1 ECP-compatible parallel port
♦
♦
♦
♦
♦
♦
♦
♦
Floppy drive connector
IDE drive connector (44-pin version for notebook drives)
Accepts solid-state flashdisk modules directly on board
IrDA port (requires external transceiver)
PS/2 keyboard and mouse ports
Speaker, LED, and Reset connections
System Features
♦
♦
♦
♦
♦
♦
♦
♦
♦
♦
♦
♦
Plug and play BIOS with IDE autodetection, 32-bit IDE access, and LBA support
Built-in disk emulation for OS and file storage in on-board flash memory
Built-in fail-safe boot ROM for system recovery in case of BIOS corruption
Serial console capability eliminates need for video board and monitor
On-board lithium backup battery for real-time-clock and CMOS RAM
ATX power switching capability
Watchdog timer with hardware and software trigger and programmable delay
Power surge monitor for fail-safe operation
Zero wait-state capability for flash memory and PC/104 bus
+5V-only operation
Extended temperature range operation (-40 to +85oC)
Cable-free assembly when used with Diamond Systems’ PNL-Z32 Panel I/O board
Prometheus-LC CPU User Manual V1.0
Page 5
3. PROMETHEUS-LC BOARD DRAWING
I/O Connectors
J1
PC/104 8-bit bus connector
PC/104 16-bit bus connector
Main user I/O connector
Not present
J2
J3
J4
J5
Dual USB ports
J7
Floppy drive connector
IDE drive connector
J8
J11
J12
J14
J15
Input power connector
Switched output power connector
Not present
Auxiliary serial port connector
Configuration Jumper Blocks
J6
System recovery jumper block
J10
J13
System configuration jumper block
Not present
Prometheus-LC CPU User Manual V1.0
Page 6
4. I/O HEADERS
All cables mentioned in this chapter are included in Diamond Systems’ cable kit C-PRZ-KIT.
These cables are further described in chapter 14. Some cables are also available individually.
4.1 Main I/O Connector – J3
An 80-pin high-density connector is provided for access to the standard user I/O:
♦
♦
♦
4 serial ports
Parallel port
Watchdog timer I/O
♦
♦
♦
PS/2 keyboard
PS/2 mouse
IrDA port
♦
♦
♦
ATX Power switch
Reset switch
Power and HDD LEDs
This connector mates with Diamond Systems’ cable no. C-PRZ-01, which consists of a dual-
ribbon-cable assembly with industry-standard connectors at the user end. The CPU mating
connector includes integral latches for enhanced reliability. Each ribbon cable has 40 wires.
Cable “A”
Cable “B”
1
2
3
4
5
6
7
8
9
DCD1
DSR 1
RXD 1
RTS 1
TXD 1
CTS 1
DTR 1
RI 1
1
2
3
4
5
6
7
8
9
STB-
AFD-
PD0
ERR-
PD1
INIT-
PD2
SLIN-
PD3
COM 1
COM 2
COM 3
Ground
10 DCD 2
11 DSR 2
12 RXD 2
13 RTS 2
14 TXD 2
15 CTS 2
16 DTR 2
17 RI 2
18 Ground
19 DCD 3
20 DSR 3
21 RXD 3
22 RTS 3
23 TXD 3
24 CTS 3
25 DTR 3
26 RI 3
27 Ground
28 DCD 4
29 DSR 4
30 RXD 4
31 RTS 4
32 TXD 4
33 CTS 4
34 DTR 4
35 RI 4
36 Ground
37 +5V Out
38 Speaker Out
39 IDE Drive LED
40 Power LED
10 Ground
11 PD4
12 Ground
13 PD5
14 Ground
15 PD6
16 Ground
17 PD7
18 Ground
19 ACK-
20 Ground
21 BUSY
22 Ground
23 PE
LPT 1
24 Ground
25 SLCT
26 KB Clk
27 KB/MS V-
28 KB Data
29 KB/MS V+
30 MS Clk
31 KB/MS V-
32 MS Data
33 KB/MS V+
34 Ground
35 Reset-
36 ATX Power
37 KB Lock
38 IR RX
39 IR TX
Keyboard
Mouse
COM 4
Utilities B
Utilities A
40 +5V In
Prometheus-LC CPU User Manual V1.0
Page 7
Notes on J3 Signals
COM1 – COM4
The signals on these pins are RS-232 level signals and may be
connected directly to RS-232 devices. The pinout of these signals is
designed to allow a 9-pin male IDC connector to be crimped onto the
corresponding ribbon cable wires to provide the correct pinout for a PC
serial port connector (DTE).
LPT1
The signals on these pins comprise a standard PC parallel port. The
pinout of these signals is designed to allow a 25-pin female IDC
connector to be crimped onto the corresponding ribbon cable wires to
provide the correct pinout for a PC parallel port connector.
Keyboard, Mouse
These are PS/2 signals for keyboard and mouse.
Clk
V-
Clock pin; connects to pin 5 of the PS/2 connector.
Power pin; connects to pin 3 of the PS/2 connector.
Data pin; connects to pin 1 of the PS/2 connector.
Power pin; connects to pin 4 of the PS/2 connector.
Pins 2 and 6 on the Mini-Din-6 PS/2 connectors are unused.
Data
V+
Utilities A
+5V Out
This pin is a switched power pin that is turned on and off with the ATX
power switch or with the +5V input.
Speaker Out
IDE Drive LED
Power LED
The signal on this pin is referenced to +5V Out. Connect a speaker
between this pin and +5V Out.
Referenced to +5V Out. Does not require a series resistor. Connect
LED directly between this pin and +5V Out.
Referenced to +5V Out. Does not require a series resistor. Connect
LED directly between this pin and +5V Out.
Utilities B
Reset-
Connection between this pin and Ground will generate a Reset
condition.
ATX Power
When ATX is enabled, a momentary contact between this pin and
Ground causes the CPU to turn on, and a contact of 4 seconds or
longer will generate a power shutdown. ATX power control is enabled
with a jumper on jumper block J10 (see page 14).
KB Lock
When this pin is connected to Ground, the keyboard and mouse inputs
are ignored.
IR RX, IR TX
+5V In
IrDA pins. Can be connected directly to an IrDA transceiver.
Connected to +5V input power on J11 (see page 9). This pin is not
switched by ATX control. This pin is provided for auxiliary use such as
front panel lighting or other circuitry at the user’s discretion.
Connector Part Numbers
J3 plug on CPU board:
3M / Robinson Nugent no. P50E-080P1-S1-TG
Both cable-mount and board-mount connectors are available to mate with J3:
Cable-mount socket:
Board-mount socket:
3M / Robinson Nugent no. P50E-080S-TG
3M / Robinson Nugent no. P50-080S-R1-TG
Prometheus-LC CPU User Manual V1.0
Page 8
4.2 Input Power – J11
1
2
3
4
5
6
7
8
9
+5V In
Ground
Ground
+12V In
Ground
+5V In
-12V In
-5V In
ATX Control
Input power for Prometheus-LC may be supplied either through J11 from an external supply or
directly through the PC/104 bus power pins if a PC/104 power supply is used with the CPU.
Prometheus-LC requires only +5VDC input power to operate. All other required voltages are
generated on board with miniature switching regulators. However since the PC/104 bus includes
pins for ±5V and ±12V, these voltages may be supplied through J11 if needed. The +5V and
+12V voltages are controlled by the ATX power manager switches, while -5V and -12V are routed
directly to the corresponding pins on PC/104 bus and are not controlled by the ATX function.
Make sure that the power supply used has enough current capacity to drive your system. The
Prometheus-LC CPU requires up to 1.1A on the +5V line. If you have a disk drive or other
modules connected, you need additional power. In particular, many disk drives need extra current
during startup. If your system fails to boot properly, or if disk accesses do not work properly, the
first thing to check is the power supply voltage level. Many boot-up problems are caused simply
by insufficient voltage due to excess current draw on the +5V supply.
Multiple +5V and Ground pins are provided for extra current carrying capacity if needed. Each pin
is rated at 3A max (15W). For the Prometheus-LC CPU, the panel I/O board, and a video board,
3A is sufficient, so +5 and Ground require only a single wire each. In this case the first 4 pins may
be connected to a standard 4-pin miniature PC power connector if desired.
For a larger PC/104 stack the total power requirements should be calculated to determine
whether additional wires are necessary.
ATX control enables the +5V and +12V power to be switched on and off with an external
momentary switch. A short press on the switch will turn on power, and holding the switch on for 4
seconds or longer will turn off power.
Diamond Systems’ cable no. 698009 mates with J11. It provides 9 color-coded wires with stripped
and tinned leads for connection to user-supplied power sources. This cable may also be used
with Diamond Systems’ Jupiter-MM series power supplies in vehicle-based applications. In this
configuration, the input power is supplied to the Jupiter-MM board, and the Jupiter-MM output
power is connected to J11 on the CPU using cable 698009. When used in this way, make sure
the two red +5V wires are both connected to the +5V output screw terminal on Jupiter-MM.
Prometheus-LC CPU User Manual V1.0
Page 9
4.3 Output Power – J12
1
2
3
4
+5V Out
Ground
Ground
+12V Out
J12 provides switched power for use with external drives. If ATX is enabled, the power is
switched on and off with the ATX input switch. If ATX is not enabled, the power is switched on
and off in conjunction with the external power.
Diamond Systems’ cable no. 698006 mates with J12. It provides a standard full-size power
connector for a hard drive or CD-ROM drive and a standard miniature power connector for a
floppy drive.
4.4 USB – J5
Key (pin cut)
USB2 Pwr-
USB2 Data+
USB2 Data-
USB2 Pwr+
1
3
5
7
9
2
4
6
8
10
Shield
USB1 Pwr-
USB1 Data+
USB1 Data-
USB1 Pwr+
J5 is a 2x5 pin header. It mates with Diamond Systems’ cable no. 698012, which provides 2
standard USB type A jacks in a panel-mount housing.
Prometheus-LC CPU User Manual V1.0
Page 10
4.5 Auxiliary Serial Port Connector – J15
1
2
3
4
5
6
RX COM1
TX COM1
Ground
RX COM2
TX COM2
Ground
Pin 2 on DB9 #1
Pin 3 on DB9 #1
Pin 5 on DB9 #1
Pin 2 on DB9 #2
Pin 3 on DB9 #2
Pin 5 on DB9 #2
This 6-pin header is provided for auxiliary access to serial ports 1 and 2 with signals RX, TX, and
Ground for each port. This connector may be used in low-cost limited I/O configurations as an
alternative to the 80-pin connector J3.
Do not use both J15 and the corresponding pins on J3 simultaneously.
Diamond Systems’ cable no. 698005 converts the 6 pins to two standard DB9M connectors with
industry-standard pinout for RS-232 DTE.
4.6 Watchdog/Failsafe Features – J6
ZFIX
+3.3V
PRST-
1
3
5
2
4
6
Ground
WDI
WDO
J6 serves two main functions. It is used for watchdog timer access, and it is used to enable the
ZFx86 failsafe feature (ZFIX mode) for reprogramming the BIOS or downloading files to the flash
memory. J6 also contains a reset indicator signal PRST- that goes low for 200ms whenever a
system reset occurs.
When the CPU is installed with a Panel Board, the failsafe feature is activated with a momentary
switch on the panel board labeled ZFIX, and the watchdog timer feature is accessed with header
J9 on the upper right edge of the panel board.
The watchdog timer circuit is described on page 18 of this manual. It may be programmed
directly, as described in the ZFx86 training manual included with the Prometheus-LC documents,
or with Diamond Systems’ Universal Driver software.
The failsafe feature is described on page 19 of this manual.
Prometheus-LC CPU User Manual V1.0
Page 11
4.7 Floppy Drive – J7
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
1
3
5
7
9
2
4
6
8
10
High Density
Unused
Unused
Index
Motor Enable
Drive Select B
Drive Select A
Motor Enable
Direction
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
Step
Write Data
Write Enable
Track 0
Write Protect
Read Data
Select Protect
Disk Change
J7 is a 2x17 pin header. It mates with Diamond Systems’ cable no. 698008 or any standard floppy
drive interface cable. Up to two floppy drives can be connected. The connector furthest away from
the others is used to connect to the board. The connector at the far end of the cable (after the
twist) is for Drive A, and the middle connector is for Drive B.
4.8 IDE Drive – J8
RESET-
D7
1
3
5
7
9
2
4
6
8
10
Ground
D8
D9
D10
D6
D5
D4
D11
D3
D2
D1
D0
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
41 42
43 44
D12
D13
D14
D15
Key (Not Used)
Ground
Ground
Ground
Ground
Ground
Pulled low for 16-bit operation
Not Used
A2
CS1-
Ground
+5V
Ground
DRQ
IDEIOW-
IDEIOR-
IORDY
DACK-
IRQ14
A1
A0
CS0-
LED-
+5V
Ground
Not Used
J8 is a 2x22 (44-pin) 2mm-pitch pin header. It mates with Diamond Systems’ cable no. 698004,
and may be used to connect up to 2 IDE drives (hard disks, CD-ROMs, or flashdisk modules).
The 44-pin connector includes power and mates directly with notebook drives and flashdisk
modules. To use a standard format hard disk or CD-ROM drive with a 40-pin connector, an
adapter PCB such as Diamond Systems’ ACC-IDEEXT is required.
Prometheus-LC CPU User Manual V1.0
Page 12
4.9 PC/104 Bus Connectors
The PC/104 bus is essentially identical to the ISA Bus except for the physical design. It specifies
two pin and socket connectors for the bus signals. A 64-pin header J1 incorporates the 62-pin 8-
bit bus connector signals, and a 40-pin header J2 incorporates the 36-pin 16-bit bus connector
signals. The additional pins on the PC/104 connectors are used as ground or key pins. The
female sockets on the top of the board enable stacking another PC/104 board on top of the board,
while the male pins on the bottom enable the board to plug into another board below it.
In the pinout figures below, the tops correspond to the left edge of the connector when the board
is viewed from the primary side (side with the CPU chip and the female end of the PC/104
connector) and the board is oriented so that the PC/104 connectors are along the bottom edge of
the board.
View from Top of Board
J2: PC/104 16-bit bus connector
J1: PC/104 8-bit bus connector
Ground
MEMCS16-
IOCS16-
IRQ10
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10 C10
D11 C11
D12 C12
D13 C13
D14 C14
D15 C15
D16 C16
D17 C17
D18 C18
D19 C19
C0
C1
C2
C3
C4
C5
C6
C7
C8
C9
Ground
SBHE-
LA23
LA22
LA21
LA20
LA19
LA18
LA17
IOCHCHK-
SD7
A1
A2
A3
A4
A5
A6
A7
A8
A9
B1
B2
B3
B4
B5
B6
B7
B8
B9
Ground
RESET
+5V
IRQ9
-5V
DRQ2
-12V
0WS-
SD6
SD5
SD4
SD3
SD2
SD1
SD0
IRQ11
IRQ12
IRQ15
IRQ14
DACK0-
DRQ0
DACK5-
DRQ5
DACK6-
DRQ6
DACK7-
DRQ7
+12V
MEMR-
MEMW-
SD8
IOCHRDY
AEN
A10 B10
A11 B11
A12 B12
A13 B13
A14 B14
A15 B15
A16 B16
A17 B17
A18 B18
A19 B19
A20 B20
A21 B21
A22 B22
A23 B23
A24 B24
A25 B25
A26 B26
A27 B27
A28 B28
A29 B29
A30 B30
A31 B31
A32 B32
Key (pin cut)
SMEMW-
SMEMR-
IOW-
SA19
SA18
SA17
SA16
SA15
SA14
SA13
SA12
SA11
SA10
SA9
SA8
SA7
SA6
SA5
SA4
SA3
SA2
SA1
SD9
SD10
SD11
SD12
SD13
SD14
SD15
Key (pin cut)
IOR-
DACK3-
DRQ3
DACK1-
DRQ1
Refresh-
SYSCLK
IRQ7
IRQ6
IRQ5
IRQ4
IRQ3
DACK2-
TC
BALE
+5V
OSC
+5V
MASTER-
Ground
Ground
SA0
Ground
Ground
Ground
Prometheus-LC CPU User Manual V1.0
Page 13
5. JUMPER CONFIGURATION
Refer to the Prometheus-LC board drawing on page 6 for locations of the configuration items
mentioned here.
5.1 System Configuration – J10
Jumper block J10 is used for configuration of IRQ levels, wait states, ATX power control, and
CMOS RAM. Note: The A/D features described here are not present on this model and should be
ignored.
Serial Port and A/D IRQ Settings
COM3 may be set to IRQ4 or IRQ9. COM4 may be set to IRQ3 or IRQ15. In addition, it is
possible to configure both ports to share IRQ4 or IRQ5.
Wait States
The ISA bus may be configured for standard wait states or zero wait states. In most
configurations and board combinations, the zero wait state setting will work properly and provide
faster performance. However it should be tested in your application to verify correct operation. In
standard configuration, the CPU issues 2 wait states for 16-bit cycles and 3 wait states for 8-bit
cycles.
ATX Power Control
The ATX power control is set with this jumper block. If the ATX jumper is out, ATX works
normally; an external momentary switch may be used to turn power on and off. A quick contact
turns the power on, and a long contact (> 4 seconds) turns the power off. If the ATX jumper is in,
the ATX function is bypassed and the system will power up as soon as power is connected.
Erasing CMOS RAM
The CMOS RAM may be cleared with a jumper as shown on the next page. This will cause the
CPU to power up with the default BIOS settings. To clear the CMOS RAM, power down the CPU,
install the jumper as shown, return it to its default position, and then power up again.
Before erasing CMOS RAM, write down any custom BIOS settings you have made!
Default Settings
Prometheus-LC CPU User Manual V1.0
Page 14
The different configurations for J10 are shown below. Each illustration shows only the jumper of
interest. An asterisk (*) indicates the default setting.
5.2 Watchdog Timer & System Recovery – J6
J6 is used to configure the watchdog timer and enable system recovery (failsafe mode) in case of
BIOS corruption. This jumper has different dimensions than J10 and J13, and the jumpers are not
interchangeable.
Watchdog timer operation is described in detail on page 18.
Failsafe mode operation is described on page 19.
Prometheus-LC CPU User Manual V1.0
Page 15
6. SYSTEM FEATURES
6.1 System Resources
The table below lists the default system resources utilized by the circuits on Prometheus.
Device
Address (Hex)
IRQ
DMA
Serial Port COM1
I/O 3F8-3FF
4
-
Serial Port COM2
Serial Port COM3
Serial Port COM4
Parallel Port LPT1
IDE Controller
Floppy Controller
USB
I/O 2F8 – 2FF
I/O 3E8 – 3EF
I/O 2E8 – 2EF
I/O 378 – 37F
I/O 1F0 – 1F7
3
-
-
-
3
-
-
-
4
3
7
14
11
6.2 CPU Chip Selects
The ZF Micro CPU chip contains 4 user-configurable I/O chip selects and 4 user-configurable
memory chip selects. These chip selects are visible in the BIOS setup screens. I/O chip selects 1
and 2 are used for the two serial ports COM3 and COM4. I/O chip selects 0 and 3 are not used.
Chip Select
Function
Mode
Address Range
I/O Size
Window Size
0
Not used
--
--
--
--
1
2
3
COM3
COM4
R/W
R/W
--
3E8 – 3EF
2E8 – 2EF
--
8 bits
8 bits
--
8 bytes
8 bytes
--
Not used
These chip select settings should not be modified unless you need to change the addresses
of one or more of the affected circuits for a special system configuration and are fully aware of the
impact of your changes.
Prometheus-LC CPU User Manual V1.0
Page 16
6.3 Console Redirection to a Serial Port
Prometheus-LC provides keyboard and terminal emulation by means of console redirection, or
serial console. This involves redirecting keyboard input and character output to a serial port
(console redirection). A serial port on another PC can be connected to the serial port on
Prometheus-LC with a null modem cable, and a terminal emulation program (such as
Hyperterminal) can be used to establish the connection. The terminal program must be capable of
transmitting special characters including F2 (some programs or configurations trap special
characters or may require special configuration).
The default Prometheus-LC BIOS setting enables console redirection onto COM2 during POST
(power on self-test). The communication parameters are 115.2Kbaud, N, 8, 1. When the CPU is
powered up, the BIOS will output POST information to COM2 and monitor it for any keyboard
activity. You can enter the BIOS by pressing F2 during this time. In the default configuration, after
POST is finished and the CPU boots, console redirection is disabled.
There are three possible configurations for console redirection:
♦
♦
♦
POST only (default)
Always On
Disabled
To modify the console redirection settings, enter the BIOS, select the Advanced menu, and then
select Console Redirection. In Com Port Address, select Disabled to disable the function, On-
board COM A for COM1, or On-board COM B for COM2 (default).
If you select Disabled, you will not be able to enter BIOS again during power-up through the serial
port. To reenter BIOS when console redirection is disabled, you must either install a PC/104 video
board and use a keyboard and terminal or erase the CMOS RAM, which will return the BIOS to its
default settings. CMOS RAM may be erased by moving a jumper. See page 14 for instructions.
Before erasing CMOS RAM, write down any custom BIOS settings you have made!
If you erase the CMOS RAM, the next time the CPU powers up COM2 will return to the default
settings of 115.2Kbaud, N, 8, 1 and operate only during POST.
If you selected COMA or COMB, then continue with the configuration:
For Console Type select PC ANSI. You can modify the baud rate and flow control here if desired.
At the bottom, for Continue C.R. after POST, select Off (default) to turn off after POST or select
On to remain on always. (C.R. = Console Redirection)
Exit the BIOS and save your settings.
Prometheus-LC CPU User Manual V1.0
Page 17
6.4 Watchdog Timer
Prometheus-LC contains a watchdog timer circuit consisting of two programmable timers, WD1
and WD2, cascaded together. The input to the circuit is WDI, and the output is WDO. Both signals
appear on I/O connector WDI may be triggered in hardware or in software. A special “early”
version of WDO may be output on the WDO pin. When this signal is connected to WDI, the
watchdog circuit will be retriggered automatically. A block diagram is provided here:
The duration of each timer is user-programmable. When WD1 is triggered, it begins to count
down. When it reaches zero, it triggers WD2 and may also generate a user-selectable
combination of these events:
♦
♦
♦
♦
Non-maskable interrupt (NMI)
System controller interrupt (SCI)
System Management interrupt (SMI)
Hardware reset
WD2 then begins to count down. When WD2 counter reaches zero, it will unconditionally cause a
hardware reset. The WD2 timer is provided to give external circuits time to respond to the WDO
event before the hardware reset occurs.
The watchdog timer circuit is programmed via I/O registers 0CH through 12H. Detailed
programming information is in the ZFx86 Training Manual included in the Documents folder of the
Diamond Systems CD. The watchdog timer is supported in the DSC Universal Driver software
version 5.1 and later.
Prometheus-LC CPU User Manual V1.0
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6.5 Failsafe Mode / BIOS Recovery
The ZFx86 failsafe feature consists of a small command interpreter built in to the ZFx86 CPU
chip. The ZFx86 contains a ROM with the command interpreter as well as an 8KB RAM. It may
be used to power up the system and download the BIOS to recover from situations in which the
BIOS accidentally becomes corrupted or erased. The failsafe feature is used in the factory to
program the BIOS in new Prometheus-LC boards for the first time.
To enable the failsafe feature when the panel board is not used, install a jumper between pins 1
and 3 of J6 on Prometheus. To enable failsafe feature when the panel board is used, press the
ZFIX button on the panel board while pressing and releasing the Reset button (the ZFIX button
must be released after the Reset button is released). During the next system reset, the board will
power up to the failsafe boot ROM and provide user I/O through COM1. At this point the DSC
utility program ZFTERM.EXE may be used to download the BIOS to the board. See the
information in the \Utilities\BIOS Recovery folder of the Prometheus-LC files area of the DSC
customer CD for instructions on using this program.
6.6 Flash Memory
Prometheus-LC contains a 1Mbyte 16-bit wide flash memory chip for storage of BIOS and
optional user files. The BIOS occupies the upper 256Kbytes, leaving the rest available for user
applications.
6.7 Backup Battery
Prometheus-LC contains an integrated RTC / CMOS RAM backup battery. The battery is located
adjacent to the PC/104 bus connector J1. This battery has a capacity of 30mAH and will last
approximately 2 years in power-off state. The battery is activated for the first time during initial
factory configuration and test. Thus the age of the battery can be determined by inspecting the
date label on the board.
6.8 System Reset
Prometheus-LC contains a chip to control system reset operation. Reset will occur under either of
two conditions:
♦
♦
User causes reset with a ground contact on the Reset input
Input voltage drops below 3.0V.
The ISA Reset signal is an active high pulse with a duration of 200ms.
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7. BIOS FEATURES
7.1 BIOS Settings
Prometheus-LC uses a BIOS from Phoenix Technologies modified to support the custom features
of the ZF Micro ZFx86 chip and the Prometheus-LC board. Some of these features are described
here.
To enter the BIOS during system startup (POST – power on self-test), press F2.
Serial Ports
-The address and interrupt settings for serial ports COM1 – COM4 may be modified. COM1 and
COM2 address and interrupt settings are done in the BIOS, Advanced menu, I/O Device
Configuration. See page 24 for details.
-The addresses of COM3 and COM4 are configurable in the BIOS. Select Advanced menu,
Advanced Chipset Control, ISA I/O Chip Select Setup. See page 24 for details.
Parallel Port
-The parallel port settings may be modified on the same screen as serial ports COM1 and COM2
(I/O Device Configuration).
Data Acquisition
-The on-board data acquisition circuit is modified on the same screen as serial ports COM3 and
COM4 (ISA I/O Chip Select Setup).
Floppy / IDE Settings
-On the Advanced screen, I/O Device Configuration, the following settings should be retained:
Floppy disk controller
Base I/O address
Enabled
Primary
Primary
Local Bus IDE adapter
Miscellaneous
-On the Advanced screen, the following settings should be retained:
USB Host Controller
Enabled
USB BIOS Legacy Support
Installed O/S
Disabled (Legacy support is not currently provided)
Other
Large Disk Access Mode
Remote Management Baud Rate
DOS
Ignore; feature not supported on Prometheus
-On the PCI Configuration page (from the Advanced screen), the following setting should be
retained:
ISA Graphics Device Installed
PCI IRQ Level 1-4
No
Autoselect for all
PCI/PNP ISA UMB Region Exclusion Available for all
-The features on the Power screen are not supported on Prometheus.
Prometheus-LC CPU User Manual V1.0
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7.2 BIOS Download / Recovery
Because the BIOS is stored in reprogrammable Flash memory, it is possible that the BIOS could
be accidentally erased when trying to write other files into the Flash. To recover from this situation
the CPU chip on Prometheus-LC contains a special failsafe Boot-Up ROM (BUR) that can be
activated on power-up. A Diamond Systems software utility is provided to enable system recovery
by downloading the BIOS to the flash memory through serial port COM1 when the CPU is booted
up to the BUR.
The recovery procedure requires another PC running Windows 95, or Windows 98. This host
machine is connected to the Prometheus-LC CPU using a null modem serial cable connected to
COM1 on each computer. Three files are required on the host PC: Zftrm.exe, Loadbios.com, and
the file containing the BIOS, Prm1.rom. These files should be in the same directory.
PC Serial Port End (DB-9)
Prometheus-LC COM1 end Corresponding pin on J6
2 (RX)
3 (TX)
2 (TX)
3 (TX)
2 (RX)
1 (RX)
5 (Ground)
5 (Ground)
3 (Ground)
Null modem cable required pinout
To boot up the Prometheus-LC CPU to BUR, set the jumper on J6 on Prometheus-LC to the BUR
position. If using the Panel I/O board, press the Link switch while powering up or resetting the
computer. The link switch must be held down slightly longer than the reset switch is released in
order to power up to the BUR. When the Prometheus-LC CPU boots up you will see the BUR
display in the terminal program. The required communication parameters are 9600, n, 8, 1.
Now run the accompanying batch file recover.bat to begin the process. This batch file executes
the following command:
zftrm.exe loadbios.com prm1.rom
Each flash manufacturer utilizes a different programming protocol. Zfterm.exe knows about AMD
and Atmel parts, which are used on Prometheus-LC boards. If the software cannot recognize the
flash device as an AMD or Atmel part then the CPU might have a hardware problem, or else the
program is an old version and needs to be upgraded. If this is the case, the software will exit with
a message indicating that the device is not supported. Contact Diamond Systems technical
support for further assistance.
After the software recognizes the device, it first completely erases the flash chip. This might take
up to 90 seconds. After the chip is erased the software reports “Flash Erased” and then starts
downloading the BIOS image from the host and programming the chip. To completely download
and reprogram the BIOS takes several minutes. While this happens characters are continuously
scrolled across the screen of the host PC. It is recommended that no other applications or tasks
be running on the host PC during this time.
When the device is completely reprogrammed with the BIOS, the host will report the completion
and the program will terminate. The Prometheus-LC CPU is now ready to reboot in normal mode.
Remove the null modem cable, and return the jumper on J6 to its default position.
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8. DISK-ON-BOARD™ FLASH FILE STORAGE
Prometheus-LC supports the use of its on-board flash memory as a disk drive. About 1.45Mbytes
of the total 2MB capacity is available for this function. This valuable feature lets you run a DOS
operating system right from the flash without having to use any external storage media in your
finished application. You save the cost of external disk drives or flashdisk modules and
associated cables and assembly time. Simply format the unused portion of the on-board flash to
work as a disk drive, connect a floppy or hard disk to transfer your files, then disconnect them,
and the system is ready to run. Complete instructions are included here.
To use the Disk-On-Board feature, you must have BIOS version 1.07M or later installed on your
Prometheus. When you power up the board, the screen will indicate the BIOS version number. If
you have an earlier version, you can download the latest BIOS from the Diamond Systems
website along with an update utility program. The instructions for updating the BIOS are included
with the BIOS package on our website and are also included in this manual. All Prometheus-LC
boards shipped on or after Septeember 23, 2002 include the Disk-On-Board feature.
Initial Setup
•
Install BIOS version 1.07M or later if not already installed. Earlier versions of the
Prometheus-LC BIOS do not support this feature. Please see the BIOS recovery section
of the users manual or the instructions included with the BIOS upgrade package on our
website.
•
•
•
•
•
Boot the system and enter the BIOS setup by pressing F2 early in the boot up.
Go to Advanced->Advanced Chipset Control and enable the “Flash Virtual Drive”.
Save and exit the BIOS by hitting F10. WARNING: Do not skip this step.
The system will boot again. Reenter the BIOS after it boots by hitting the F2 key.
Go to Advanced->Advanced Chipset Control again. Highlight “FLASH Initialize” then hit
<enter>. You will see a percentage complete indicator. After completion the BIOS will
return to the “Advanced” screen.
WARNING: When you press enter, the flash memory will be initialized and erased. Any
data currently in the flash (except the BIOS) will be lost!
•
•
•
•
Hit the <ESC> key to return to the main tabbed menus.
Go to the Boot tab.
Highlight “Removable Devices” and hit <enter>.
The “Onboard Flash” will be listed after “Legacy Floppy Drives”. This will make it a non-
bootable B: drive. You can change it to a bootable A: drive by hitting the <+> or <-> key to
move it to the top. This should only be done after it has been formatted and loaded with
operating system files (see below), otherwise your system will not boot.
•
Save and exit the BIOS by hitting the F10 key.
Operating System Formatting
•
•
•
Attach a floppy drive to Prometheus.
Boot to a DOS system disk in the floppy drive.
At the A: prompt type “format b: /s” to format the Onboard Flash drive with the system
files.
•
To make this drive a bootable A: drive, reboot the system and re-enter the BIOS. Go back
to the Boot menu to change the boot order by listing the “Onboard Flash” before the
“Legacy Floppy Drive”.
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Known Limitations
•
RFD (onboard flash drive) is not compatible with DOS expanded memory configuration in
EMM386.EXE. Use the NOEMS switch appended to the end of the EMM386 line in your
config.sys to bypass EMS. Example line in config.sys:
device=c:\DOS\EMM386.exe NOEMS
•
•
The onboard flash chip has a limitation of 2,000,000 erase cycles, so swap drives or
virtual memory functions should not be used.
Only 16-bit operating systems are supported with this Onboard Flash. MSDOS 6.22,
ROMDOS 6.22 and 7.0, and FreeDOS have been tested. Other operating systems may
work as long as they have a 16-bit compatibility mode.
Life Cycle Management and Calculations
The Disk-On-Board feature provides a simple form of wear leveling. Each time data is written, the
next consecutive available memory space is used, and the current location is marked as garbage
and made available for later use. This way the system walks through the entire available space
before rewriting the current file location. This technique helps to dramatically increase the chip’s
lifetime, because the entire chip is used to spread out the wear caused by the repeated erase
cycles.
A typical embedded application consists of reading a file, updating it, and repeating the process
over and over again. The formula for calculating the number of times this may be done before the
flash reaches its limit is as follows:
Number of file writes = (size of chip / size of file) * lifetime of chip
Where size of chip = 1.45MB and lifetime of chip = 2,000,000. This formula reveals the increase
in lifetime provided by the wear leveling. The lifetime is increased by the ratio of the chip’s total
capacity to the file size.
To calculate the number of days the chip will last, simply factor in the number of updates per day:
Lifetime in days = number of file writes / file writes per day
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9. SYSTEM I/O
9.1 Serial Ports
Prometheus-LC contains 4 serial ports. Each port is capable of transmitting at speeds of up to
115.2Kbaud. Ports COM1 and COM2 are built into the ZF Micro CPU chip. They consist of
standard 16550 type UARTs with 16-byte FIFOs. Ports COM3 and COM4 are derived from an
Exar 16C2850 dual UART chip and include 128-byte FIFOs. Ports 3 and 4 may be operated at
speeds up to 1.5Mbaud with installation of high-speed drivers as a custom option.
The serial ports use the following default system resources:
Port
Address range
I/O 3F8 – 3FF
I/O 2F8 – 2FF
I/O 3E8 – 3EF
I/O 2E8 – 2EF
IRQ
4
COM1
COM2
COM3
COM4
3
4
3
The settings of COM1 and COM2 may be changed in the system BIOS. Select the Advanced
menu, then I/O Device Configuration. Serial Port A is COM1, and Serial Port B is COM2. The
base address and interrupt level may be modified on this page.
The settings of COM3 and COM4 may be changed using a different procedure:
The addresses of these two ports are selected on the Advanced menu of the BIOS. Select
Advanced Chipset Control, then ISA I/O Chip Select Setup. I/O Window – io_cs1 is for COM3 and
I/O window – io_cs2 is for COM4. The only parameter that may be changed is the address. The
other settings must remain in their default values:
Window state:
Enabled
Base Address:
Read/Write control:
Window data width:
Active Level:
(user selectable)
Read/Write
8-bits
Active Low
08
Window size:
After making any desired changes, go to the top-level Exit menu and select Exit Saving
Changes.
The interrupt (IRQ) settings for COM3 and COM4 are selected with J10. COM3 may use IRQ4 or
IRQ9. COM4 may use IRQ3 or IRQ15. If both serial ports share the same IRQ, they may share
IRQ4 or IRQ5. See page 14 for serial port IRQ jumper settings.
9.2 Parallel Port
The parallel port (LPT1) is an IEEE-1284 compatible bidirectional port. It includes filtering for
reduced EMI operation. It operates in ECP mode (set up in the BIOS). The parallel port has the
following default configuration:
Port
Mode
Address range
IRQ
DMA
LPT1
ECP
I/O 378 – 37F
7
3
The parallel port settings may be modified in the BIOS. Select Advanced menu, then I/O Device
Configuration. The above four settings may then be modified.
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10.NOTES ON OPERATING SYSTEMS AND BOOTING PROCEDURES
10.1 Installing an OS From a Floppy Drive onto a Flashdisk Module
1. Make sure the flashdisk module jumper is configured for Master.
2. Install the flashdisk module onto the CPU. See installation instructions on page 27.
3. Power up your system and enter the BIOS during startup.
4. Go to the Boot screen and change the boot sequence to boot from floppy disk.
5. Save the new settings and exit the BIOS. The system will now boot to floppy.
6. If necessary, run FDISK and perform the following steps:
a. Remove all partitions on the flashdisk module.
b. Create a primary DOS partition on the flashdisk module.
c. Make the DOS partition the active partition.
d. Save your changes and exit.
7. Boot the system again from the floppy disk.
8. Format the flashdisk module using FORMAT C: /S.
9. Copy the operating system files and any other needed files to the flashdisk module.
10. Reboot your system and enter the BIOS during startup.
11. Go to the Boot screen and change the boot sequence to boot from hard disk.
12. Save the new settings and exit the BIOS.
13. Power down the system and disconnect the floppy drive.
14. The system is now able to boot from the flashdisk module.
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10.2 Installing an OS from a Hard Disk onto a Flashdisk Module
To install an operating system such as DOS or VxWorks from a hard drive onto a flashdisk
module, follow the procedure below. The process requires a floppy drive with a bootable DOS
diskette, a hard disk with the operating system, the flashdisk module, the IDE extender board,
and associated cables.
You must boot to the floppy drive rather than the hard drive, because if you boot to the hard drive,
it must be the master drive, making the flashdisk the slave drive. DOS will not allow you to create
a bootable partition on a slave drive, and you must create the bootable partition on the flashdisk,
so the flashdisk must be configured for the master.
As an alternative to this procedure you may also install the operating system from the floppy drive
as outlined on page 25.
2. First install the operating system onto a hard disk.
3. Configure the hard disk jumper for Slave and the flashdisk module jumper for Master.
4. Install the flashdisk module onto the IDE extender board, model ACC-IDEEXT.
5. Connect the extender board to the CPU’s IDE connector using the 44-pin ribbon cable.
6. Connect the hard disk to the appropriate connector on the extender board. If using a 44-pin
cable (such as DSC no. 698004), no power cable is required. If using a 40-pin cable (such as
DSC no. C-40-18), a separate power cable is required. The power may be provided either
from one of the two 4-pin headers on the extender board or from the Auxiliary Power Out
connector J12 on the Prometheus-LC CPU. Use DSC cable no. 698006 for the power
connection.
7. Attach a floppy drive to J7 on the Prometheus-LC using DSC cable no. 698008 and provide
power to it. DSC cable 698006 can be used for the floppy drive power.
8. Install a bootable floppy disk into the floppy drive.
9. Power up the system.
10. Make sure the BIOS is configured to boot from floppy. Press F2 to enter BIOS when booting,
and go to the Boot screen to make this configuration.
11. Once the system is booted, switch to drive D: (the hard disk with the OS on it) and change to
the DOS directory.
12. If necessary, run FDISK and perform the following steps:
a. Remove all partitions on the flashdisk module.
b. Create a primary DOS partition on the flashdisk module.
c. Make the DOS partition the active partition.
d. Save your changes and exit.
13. Boot the system again from the floppy disk.
14. Switch to the hard disk (D:) and change to the DOS directory.
15. Format the flashdisk module using FORMAT C: /S.
16. Copy the operating system files and any other needed files onto the flashdisk module.
17. Power down the system.
18. Remove the hard disk and extender board and install the flashdisk module directly onto the
IDE connector J8 on the Prometheus-LC CPU.
19. Power up the system again.
20. Enter the BIOS (F2) and change the bootup sequence to boot from hard disk C: (which now
means the flashdisk module).
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11. FLASHDISK MODULE
Prometheus-LC is designed to accommodate an optional flashdisk module. This module contains
32MB to 256MB of solid state non-volatile memory that operates like an IDE drive without
requiring any additional driver software support.
Model
Capacity
32MB
FD-32-XT
FD-64-XT
FD-128-XT
FD-256-XT
64MB
128MB
256MB
11.1 Installation
The flashdisk module installs directly on the IDE connector J8 and is held down with a spacer and
two screws onto a mounting hole on the board. It fits within the height limit of the PC/104
specification, so another board may be installed on top of the Prometheus-LC CPU.
The flashdisk module contains a jumper for master/slave configuration. For master, install the
jumper over pins 1&2, and for slave install the jumper over pins 2&3.
11.2 Configuration
To configure the CPU to work with the Flashdisk module, enter the BIOS (press F2 during
startup). Select the Main menu, then select IDE Primary Master. Enter the following settings:
Type:
User
Cylinders:
Heads:
Sectors:
Multi Sector Transfer:
LBA Mode Control:
32 Bit I/O:
489 for 32MB flashdisk
4 for 32MB flashdisk
32 for 32MB flashdisk
Disable
Enable
Disable
Transfer Mode:
Ultra DMA Mode:
Fast PIO 1
Disable
Exit the BIOS and save your change. The system will now boot and recognize the FlashDisk
module as drive C:.
11.3 Using the Flashdisk with Another IDE Drive
Since the flashdisk occupies the board’s IDE connector, mounting it on the board prevents the
simultaneous use of another IDE drive. To utilize both the flashdisk and another drive, an adapter
board, such as Diamond Systems’ ACC-IDEEXT, and cables are required. The ACC-IDEEXT
adapter board is described on page 33.
11.4 Power Supply
The 44-pin cable carries power from the CPU to the adapter board and will power the flashdisk
module and any drive using a 44-pin connector, such as a notebook hard drive.
A drive utilizing a 40-pin connector, such as a CD-ROM or full-size hard drive, requires an
external power source through an additional cable. The power may be provided from the CPU’s
power out connector (J12) or from one of the two 4-pin headers on the ACC-IDEEXT board.
Diamond Systems’ cable no. 698006 may be used with either power connector to bring power to
the drive.
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12. I/O PANEL BOARD
12.1 Description
An I/O panel board accessory, model no. PNL-Z32-E, is available to convert all I/O headers on
Prometheus-LC to industry-standard connectors. Using this panel board eliminates all internal
cables, resulting in increased ruggedness and quicker assembly. In addition a standard precut
cover plate is available to enable mounting the panel board and CPU in Diamond Systems’
Pandora enclosure system. Pandora comes in several sizes ranging from 1.7” to 10”, to
accommodate a different number of expansion boards. The 1.7” case accommodates only the
CPU, the panel board, and an optional hard drive. The 3.0” case accommodates up to 2
additional PC/104 expansion boards. Other available standard sizes are 5”, 7”, and 10”. Custom
sizes and colors may also be available based on order quantity.
PNL-Z32-E / PNL-Z32-EA I/O Panel Board for Prometheus
Prometheus-LC CPU User Manual V1.0
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12.2 Panel Board I/O Connectors
The I/O connectors below are located on the top side of the board and are for connection to
external equipment.
Location
J2
Type
DB-9M
DB-9M
DB-9M
DB-9M
DB-25F
2.5mm
DB-9M
MD-6
Description
Serial port COM1
J4
Serial port COM2
J6
Serial port COM3
J7
Serial port COM4
J10
J11
J13
J14
J15
J18
J21
J22
J23
J27
Parallel port LPT1
+5VDC input power (tip = +, ring = -)
Multi I/O power connector
PS/2 mouse connector
PS/2 keyboard connector
Ethernet connector (not present)
Data acquisition connector (not present)
USB connector
MD-6
RJ-45
IDC-50
USB A
USB A
DB-15F
USB connector
Video (VGA) connector (passthrough for add-on board)
Panel Board Top Side / External Use I/O Connectors
Additional connectors are on the bottom side and are intended for use with other boards and
circuitry inside the enclosure, such as a video board or DC/DC power supply.
Location
J3
Type
Description
Pin header Speaker and miscellaneous functions
J5
Pin header Power connection to DC/DC power supply input
Pin header Power connection to/from DC/DC power supply
Pin header Pass-through connector for VGA board
J12
J25
Panel Board Bottom Side / Internal Use I/O Connectors
12.3 Panel Board Cables
The panel board ships with a 10-wire video cable (DSC part no. 698010) and a 2-wire power
cable (DSC part no. 698011). These are intended for use with the optional accessory video board
and a Jupiter-MM (JMM) power supply when these boards are used together with the
Prometheus-LC CPU and panel board.
The 10-wire video cable connects the VGA output of the video board to pin header J25 on the
panel board. J25 is compatible with a number of companies’ PC/104 video boards that provide a
10-pin connector for the video out.
12.4 Panel Board Hardware
The panel board also comes with mounting hardware for installing it and the CPU into an
enclosure such as the Pandora system.
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12.5 Panel Board Power Connections
Prometheus-LC requires only +5V for operation. The panel boad is simply a connector board and
requires no power. Make sure that the power supply used has enough current capacity to drive
your system. The Prometheus-LC CPU requires up to 1.1A. If you have a disk drive or other
modules connected, you need additional power. In particular, many disk drives need extra current
during startup. If your system fails to boot properly, or if disk accesses do not work properly, the
first thing to check is the power supply voltage level. Many boot-up problems are caused simply
by insufficient voltage due to excess current draw on the +5V supply.
The panel board has two external input power connectors, J11 and J13, to satisfy a variety of
input power scenarios.
J11 is a circular jack with a 2.5mm post. This connector is intended for direct 5VDC +/-5% input
from the Diamond Systems PS-5VUS-01 wall adapter or an equivalent supply. The polarity for
the power connector is tip = +5V, ring = Ground.
J13 is a DB9 male connector with multiple input voltages and applications. If a latching connector
is required, the DB9 can be used in place of the circular jack to provide +5VDC.
If multiple system voltages are required, for example +5V, -5V, +12V, and/or -12V, these voltages
can be supplied through J13 as well. The +5V and +12V are controlled by the CPU’s ATX power
circuit, while the -5V and -12V are connected directly to the PC/104 bus pins.
J13 can also be used with a DC/DC power supply, such as Diamond Systems’ Jupiter-MM
modules, in applications where the supply voltage is different from the required +5V. In this
scenario, the input voltage is fed to the DB9 and routed to the power supply with cable connected
between the supply and connector J5 or J12 on the bottom side of the panel board.
J5 is used when the power is to be routed from the output of the power supply directly onto the
PC/104 bus through the PC/104 bus connectors on the power supply. In this application use the
2-wire power cable no. 698011. This cable contains a blue positive wire and a black negative
wire. Connect the blue wire to the + screw terminal on the JMM power supply input connector and
connect the black wire to the – terminal. Either J4 or J5 on the JMM board may be used for the
power connection.
J12 is used when the supply voltages are intended to be switched by the ATX circuit on
Prometheus. In this application the input and output of the power supply are connected to J12.
The +5V and +12V are controlled by the ATX function, while the -5V and -12V are connected
directly to the PC/104 bus pins.
1
2
-12V In
-5V In
3
Ground
4
+5V In
5
+5V In
6
7
+12V In
Ground
8
9
Power Input
Ground
10
Shutdown/ATX
J12 pinout (to/from DC/DC power supply)
Prometheus-LC CPU User Manual V1.0
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1
2
3
4
5
6
7
8
9
Power Switch
Power Input
+12V In
+5V In
Ground
Power Input
Shutdown
+5V In
Ground
J13 pinout (user connection)
12.6 Speaker and Miscellaneous Connector
J3 is used for optional connection of an auxiliary speaker or control switches.
The panel board contains a miniature speaker which is enabled by default. To enable this
speaker, install a jumper across pins 11 and 13 of J3 (default setting). If a different speaker is
desired, or if no speaker is desired, remove the jumper.
To connect an auxiliary speaker, connect the speaker across pins 7-8 (for a speaker with a 2-pin
2-position housing) or across pins 7-13 (for a speaker with a 2-pin 4-position housing when the
two wires are on the two end positions of the housing).
External momentary switches may be connected to J3 to control power or reset. For power,
connect the switch between pins 1 and 2 of J3. For reset, connect the switch between pins 3 and
4. Each switch operates by connecting the selected control signal to ground.
To lock out the keyboard and mouse ports on the panel board, install a jumper across pins 5-6.
To disable the ATX power function, connect a jumper across pins 12 and 14 on J3.
An auxiliary switched +5V pin is provided on J3 for customer application. In addition the
unswitched power may be used on this header to power a panel light or other customer circuit,
with the current limited to 1A.
Ground
Ground
Ground
1
3
5
7
9
2
4
6
8
10
Power Switch
Reset Switch
Keyboard/Mouse Lockout
Speaker
N/C
Ground
+5VDC Unswitched
+5VDC Switched
Internal Speaker
Speaker
11 12
13 14
ATX Disable
J3 Pinout
Prometheus-LC CPU User Manual V1.0
Page 31
12.7 Watchdog Timer
J9 may be used to connect an external watchdog timer circuit to the CPU. For watchdog timer
programming information, see page 18 and the ZFx86 Training Manual included in the
Documents folder of the Prometheus-LC CD.
1
2
3
Ground
Watchdog In
Watchdog Out
J9 Pinout
12.8 Installation
The panel board includes a hardware kit containing spacers of various sizes along with screws
and nuts. There are three sizes of spacers: 7mm (0.276”), 14mm (0.551”), and 0.600”. All
hardware for assembling the stack and mounting it to the enclosure front panel is #4-40 thread.
The Pandora enclosure includes an additional hardware kit of #6-32 screws for assembling the
front and back panels to the enclosure body. Refer to the assembly drawings provided with the
panel board for proper assembly of the PC/104 stack and Pandora enclosure.
The panel board connects to the following headers on the Prometheus-LC CPU:
J3 Main I/O
J4 Ethernet
J5 USB
J6 Watchdog timer
J11 Input power
J14 Data acquisition (-EA models)
To install the panel board onto the Prometheus-LC CPU board, first remove any jumpers on J6 of
the CPU (upper right corner) since these will interfere with the mating header on the bottom of the
panel board.
Insert the four 7mm male/female hex spacers into the holes on top of the panel board and fix
them in place with the four 14mm female/female hex spacers below. Then plug the panel board
onto the connectors of the CPU board, being careful to align all the connectors properly. Note that
there are mating connectors on all 4 edges of the board for the –EA (analog I/O) version, and
connectors on 3 sides for the -E (no analog I/O) version.
When the boards are properly mated, the 80-pin high-density connectors on the right edges of the
boards will seat completely, while the pin headers on the other sides will show a slight gap. This
is normal and does not cause any problem with reliable connections on these connectors. If you
do not install the 14mm spacers between the two boards, you will still be able to mate the two
boards satisfactorily, but they will be slightly tilted, since the high-density connector has a slightly
larger board-to-board distance than the other pin headers.
The board stack may be mounted inside the Pandora enclosure in one of two ways. The stack
may “hang” from the front panel, or it may be mounted to both the front and rear panel. The
assembly drawings included with the Pandora enclosure show both options. The stack mounts to
the front panel with four #4 flat head screws that install onto the four spacers on the top of the
panel board as well as 14 #4 screwlocks that connect to the 7 Dsub connectors on the panel
board.
Finally select one of the two options for fixing the bottom of the stack. Either install four #4 pan
head screws on the bottom of the CPU board into the four spacers between it and the panel
board, or attach the four 0.6” male/female round PC/104 spacers on the bottom of the board and
then install four #4 flat head screws through the case’s rear panel into the PC/104 spacers.
Prometheus-LC CPU User Manual V1.0
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13.FLASH DISK PROGRAMMER BOARD
The Flash Disk Programmer Board accessory model no. ACC-IDEEXT may be used for several
purposes. Its primary purpose is to enable the simultaneous connection of both a flashdisk
module and a standard IDE hard drive or CD-ROM drive to allow file transfers to/from the
flashdisk. This operation is normally done at system setup. The board can also be used to enable
the simultaneous connection of two drives to the CPU.
J1 connects to the IDE connector on Prometheus-LC with a 44-pin ribbon cable (Diamond
Systems’ part no. 698004). Both 40-pin .1” spacing (J4) and 44-pin 2mm spacing (J3) headers
are provided for the external hard drive or CD-ROM drive. A dedicated connector (J2) is provided
for the flashdisk module. Any two devices may be connected simultaneously using this board with
proper master / slave jumper configurations on the devices.
The Flash Disk Programmer Board comes with a 44-wire cable no. (DSC no. 698004) and a 40-
wire cable no. (DSC no. C-40-18) for connection to external drives. The flashdisk module is sold
separately.
The 44-pin connector (J1, J2, and J3) and mating cable carry power, but the 40-pin connector
(J4) and mating cable do not. J5 and J6 on the accessory board may be used to provide power to
a 44-pin device attached to the board when the board is attached to a PC via a 40-pin cable.
These headers are compatible with the floppy drive power connector on a standard PC internal
power cable.
ACC-IDEEXT FlashDisk Programmer Board
Prometheus-LC CPU User Manual V1.0
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14.I/O CABLES
When the panel I/O board PNL-Z32 is used, no cabling or wiring is required to operate the CPU
(unless you want to connect to an external IDE drive or floppy drive). However for custom
installations as well as development, Diamond Systems offers a cable kit no. C-PRZ-KIT with 9
cables to connect to all I/O headers on the board. Some cables are also available separately.
The mating cable for each I/O connector is listed in the chapter on I/O Headers starting on page
7.
Photo No.
Cable No.
Description
2
C-PRZ-01
80-wire / 2-cable breakout cable assembly with serial,
parallel, PS/2 mouse/keyboard, power, reset, speaker, &
LED connectors
6
3
5
7
8
4
9
C-PRZ-02
C-50-18
698004
698005
698006
698008
698009
6-wire Ethernet cable with panel-mount RJ-45 connector
50-wire data acquisition cable
44-wire IDE cable for 1 or 2 drives
6-wire auxiliary serial port cable
4-wire output power cable for external drives
34-wire floppy cable for 1 or two drives
9-wire input power cable with stripped/tinned leads for
connection to external power source
1
698012
Dual USB cable
Cable Kit C-PRZ-KIT
Prometheus-LC CPU User Manual V1.0
Page 34
15.VGA ACCESSORY BOARD
The Prometheus-LC development kit ships with a PC/104 VGA module from Arcom Control
Systems, model no. AIM-104-VGA-CRT-OEM. The Diamond Systems part no. for this board is
ACC-VGA-02.
The VGA board has several configuration jumpers, LK1 – LK3. Their functions are described in
the board’s documentation. For proper operation with Prometheus, jumper LK1 must be out.
The VGA output connector on the Arcom board is a 16-pin connector labeled PL5, located on the
left edge of the board. When used with the Diamond Systems panel board model PNL-Z32-E /
EA, this connector connects to the 10-pin VGA input header J25 on the panel board using
Diamond Systems cable no. 698013. The pinout of this cable is shown below. Each row
represents one wire on the cable.
PL5 pin no. PL5 Signal
J25 pin no.
J25 Signal
Red
1
2
Red
1
2
3
4
5
6
-
Red Return
Green
Ground
3
Green
4
Not connected
Blue
Ground
5
Blue
6
Green Return
Not connected
Not connected
Blue Return
Ground
Ground
7
Not connected
PCB shield
Not connected
Not connected
Not connected
H Sync
8
8
-
9
10
11
12
13
14
15, 16
-
Ground
-
H Sync
7
-
Not connected
V Sync
Not connected
V Sync
9
-
Not connected
Not connected
To connect PL5 directly to a VGA monitor with a high-density DB15 connector, use the multicolor
ribbon cable supplied with the video board. This cable has the following pinout:
PL5 pin no.
DB15F pin no.
Signal
1
2
1
6
Red
Red Return
Green
3
2
4
4
No Function
Blue
5
3
6
7
Green Return
No Function
No Function
Blue Return
Ground
7
9
8
11
8
9
10
11
12
13
14
15
16
5
10
13
12
14
15
-
Ground
H Sync
No Function
V Sync
No Function
No Wire
Prometheus-LC CPU User Manual V1.0
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16.MOUNTING PROMETHEUS-LC ON A BASEBOARD
Prometheus-LC is designed to allow installation upside down onto a custom baseboard. The CPU
board may be thought of as a “macro-component” when used in this way. All the key I/O headers
on the board face up and are at an even height, allowing the board to be turned over and
mounted onto a base board. A mechanical drawing showing locations of mating connectors on
the baseboard is shown on the following page.
The board-to-board mounting height for this application is 14mm (.551”). Spacers for this
application can be purchased from many suppliers of metric hardware. Standard spacers with
metric length will have metric threads (for example M3 x 0.5). Diamond Systems can supply a
custom-designed 14mm aluminum hex male/female spacer with #4-40 threads (DSC part no.
684045).
Using the board in this manner eliminates all connecting cables for most applications. All
connections except IDE, floppy drive, and switched power output are accessible through the
vertical I/O headers on the board. If you need to use IDE, floppy, or switched power output, you
will need to use cables to access the corresponding I/O headers.
The following is a list of conectors that mate with the corresponding vertical-mount I/O headers on
Prometheus:
Connector on Board
Manufacturer
Generic
Manufacturer Part No.
.1” dual row pin header, 2x32
.1” dual row pin header, 2x20
P50-080S-R1-TG
J1
J2
J3
J4
Generic
3M / Robinson Nugent
G-LINKS
Samtec
PSPH1-1X6GOB11.05-2.3
ESQ-106-12-G-S
J5
G-LINKS
Samtec
PSPH1-2X5GOB11.05-2.3
ESQ-105-12-G-D
J6
G-LINKS
Samtec
PSPH1-2X3GOB11.05-2.3
ESQ-103-12-G-D
J11
J14
G-LINKS
Samtec
PSPH1-1X9GOB11.05-2.3
ESQ-109-12-G-S
G-LINKS
Samtec
PSPH1-2X25GOB11.05-2.3
ESQ-125-12-G-D
Website information:
Samtec
3M
Note: The -12- in the Samtec part numbers above indicates standard insertion force components.
This may be replaced by -37- for low insertion force components. Because of the number and
location of the mating headers, the effort to remove the Prometheus-LC from a mating board is
significant and requires careful effort. Therefore low-insertion force components may be preferred.
Prometheus-LC CPU User Manual V1.0
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Prometheus-LC CPU User Manual V1.0
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17.PC/104 MECHANICAL DRAWING
The following drawing is from the PC/104 specification. This document may be downloaded from
Prometheus-LC CPU User Manual V1.0
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