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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
Fully supports the LIM EMS 4.0 and 3.2 specifications
Mapping:
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
DS12887 or compatible chip
Clock/Calendar:
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
Landmark speed V2.0: 359MHz (INTEL 80486DX4-100)
Performance:
Power Supply:
Only +5V DC +/-% Power requirements: +5V@ 1.5A maximum
Stand Alone
Provides external power connector and 4 fixed holes for stand-alone operation
Operation:
Operating
0 to 60 degree C (140 degree F)
Temperature:
Storage
-25 to 85 degree C
Temperature:
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)
AR-B1474 User¡ ¦ s Guide
7-1
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