User manual

1. Introduction

FEATURES

• STD 32 compatible

• STD 32 multiprocessing option (not supported by ZT 8903)

• 25 MHz Intel

386 EX CPU

• Numeric data processor socket

• Optional local bus video support

• 128 Kbyte battery-backed Static RAM (not supported by ZT 8903)

• 1, 2, or 4 Mbytes of Flash memory

• 1 or 5 Mbytes of RAM memory

• Standard AT

peripherals include:

- Interrupt controllers (8259)

- Counter/timers (8254)

- Real-time clock/CMOS RAM (146818)

- DMA controller (8237)

• Additional AT

peripherals include:

- Two RS-232 serial channels

- Two RS-232/485 DMA capable serial channels (not supported by ZT 8903)

- IEEE 1284 parallel port (Centronics, ECP, EPP)

- Optional IDE disk drive (not supported by ZT 8903)

• 24-point digital I/O with interrupt driven event sense and programmable debounce

• Two stage watchdog timer

• Pushbutton reset

• Software programmable LED

• AC/DC power monitor

• +5 V-only operation (Local charge pump for RS-232 and Flash programming)

• Compatible with the following software: MS-DOS

, OS/2

, UNIX

, QNX

, VRTX32

and Windows

3.1

• STD bus standard 4.5" x 6.5" board format

• DOS or STAR BIOS options

• Burned in at 55º Celsius and tested to guarantee reliability

• Five year warranty