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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
www.diamondsystems.com
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PROMETHEUS-LC Low-Power PC/104 CPU Board with ZFx86 Processor TABLE OF CONTENTS 1. DESCRIPTION........................................................................................................ 4 2. FEATURES............................................................................................................. 5 3. PROMETHEUS-LC BOARD DRAWING ................................................................ 6 4. I/O HEADERS.....................................................
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TABLE OF CONTENTS (CONTINUED) 12. I/O PANEL BOARD .............................................................................................. 28 12.1 Description ...................................................................................................................28 12.2 Panel Board I/O Connectors ........................................................................................29 12.3 Panel Board Cables ..............................................................
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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-cos
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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
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3. PROMETHEUS-LC BOARD DRAWING I/O Connectors J1 PC/104 8-bit bus connector J2 PC/104 16-bit bus connector J3 Main user I/O connector J4 Not present J5 Dual USB ports J7 Floppy drive connector J8 IDE drive connector J11 Input power connector J12 Switched output power connector J14 Not present J15 Auxiliary serial port connector Configuration Jumper Blocks J6 System recovery jumper block J10 System configuration jumper block J13 Not present Prometheus-LC CPU User Manual V1.0
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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 ♦ PS/2 keyboard ♦ ATX Power switch ♦ Parallel port ♦ PS/2 mouse ♦ Reset switch ♦ Watchdog timer I/O ♦ IrDA port ♦ Power and HDD LEDs This connector mates with Diamo
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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 cr
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4.2 Input Power – J11 1 +5V In 2 Ground 3 Ground 4 +12V In 5 Ground 6 +5V In 7 -12V In 8 -5V In 9 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
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4.3 Output Power – J12 1 +5V Out 2 Ground 3 Ground 4 +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.
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4.5 Auxiliary Serial Port Connector – J15 1 RX COM1 Pin 2 on DB9 #1 2 TX COM1 Pin 3 on DB9 #1 3 Ground Pin 5 on DB9 #1 4 RX COM2 Pin 2 on DB9 #2 5 TX COM2 Pin 3 on DB9 #2 6 Ground 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 simu
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4.7 Floppy Drive – J7 Ground 1 2 High Density Ground 3 4 Unused Ground 5 6 Unused Ground 7 8 Index Ground 9 10 Motor Enable Ground 11 12 Drive Select B Ground 13 14 Drive Select A Ground 15 16 Motor Enable Ground 17 18 Direction Ground 19 20 Step Ground 21 22 Write Data Ground 23 24 Write Enable Ground 25 26 Track 0 Ground 27 28 Write Protect Ground 29 30 Read Data Ground 31 32 Select Protect Ground 33 34 Disk Change J7 is a 2x17 pin header. It mates with Diamond Systems’ cab
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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 th
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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
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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 desc
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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 I/O 2F8 – 2FF 3 - Serial Port COM3 I/O 3E8 – 3EF 4 - Serial Port COM4 I/O 2E8 – 2EF 3 - Parallel Port LPT1 I/O 378 – 37F 7 3 IDE Controller I/O 1F0 – 1F7 14 - Floppy Controller - USB 11 - 6.2 CPU Chip Selects The ZF Micro CPU chip contains 4 user-configurable I/O chip
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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
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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: T
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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 f
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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
