AR-B1474 User¡¦s Guide

7-1

7. SPECIFICATIONS
CPU: 25-100 MHz INTEL/AMD/CYRIX 80486DX/DX2/DX4
Bus Interface: ISA (PC-AT) Bus and PC/104 Bus
Chipset: ALI M1429 and M1431
RAM Memory: 1MB to 32MB using 32-bit or 36-bit 72-pin SIMMs with access time of 70ns or less
Shadow RAM: Up to 256KB in 32 KB blocks supports system and video BIOS
Extended Memory
Mapping: Fully supports the LIM EMS 4.0 and 3.2 specifications
Co-Processor: Supported by all CPUs
BIOS: Legal AMI system BIOS
IDE HDD Interface: Supports up to two IDE type hard disk drives (software enable/disable)
Floppy Disk Drive: Supports up to two 5.25 (360KB & 1.2MB) or 3.5 (720KB & 1.44MB) floppy disk drives
(software enable/disable)
Parallel Port: One Centronic parallel port configurable to LPT1, LPT2, LPT3, or disable.
Serial Port: Two RS-232C serial port (with 16byte FIFOs, 16C550 compatible) configures as COM1,
COM2, COM3, COM4 or disable
Real-Time
Clock/Calendar: DS12887 or compatible chip
Watchdog Timer: Programmable time-out interval from 6 to 42 seconds. The activity can be Reset System or
Generate IRQ 15 Signal
Solid State Disk: Up to 3MB bootable solid state disk, it accepts 128Kx8 to 1Mx8 EPROM, 128Kx8 to 512Kx8
SRAM, and 64Kx8 to 512Kx8 5V FLASH
Speaker: Build-in buzzer
DMA Channels: 7 DMA channels
Interrupt Levels: 15 vectored interrupt levels
Keyboard Port: PS/2 compatible 6-pin mini DIN connector, adapter cable for PC/AT is included
Bus Speed: Programmable 1/4, 1/5, 1/6, 1/8, 1/10, or 1/12 input clock and 7.159MHz
PCB: 8 layers for noise reduction
System
Performance: Landmark speed V2.0: 359MHz (INTEL 80486DX4-100)
Power Supply: Only +5V DC +/-% Power requirements: +5V@ 1.5A maximum
Stand Alone
Operation: Provides external power connector and 4 fixed holes for stand-alone operation
Operating
Temperature: 0 to 60 degree C (140 degree F)
Storage
Temperature: -25 to 85 degree C
Humidity: 0 to 95% (non-condensing)
Dimensions: Half size, 12.2cm x 18.5cm (4.80” x 7.29”)
Weight: 280g (without CPU, DRAM SIMM, ROM and RAM chips)