研揚SBC-456/456E主機板

主機板規格

CPU: AMD 486DX5-133
CPU 类型：板载 SQFP
Bus Interface: ISA bus
BIOS: AWARD 128KB FLASH BIOS
Chipset: ALi M1487/1489
I/O Chipset : Two ITE IT8661F, fully 16-bit I/O decoded
L2 Cache: Onboard 128KB L2 Cache,and could be upgraded to 512KB by factory
Memory: Onboard 4/8M(standard) EDO RAM (bank 0) and One 72-pin SIMM sockets support up to 128Mbytes Fast Page or EDO DRAM
Enhanced IDE: Supports two IDE devices and Bus Master mode with
data transfer rate 16.7 MB/sec (One channel reserved for CFD)
FDD interface: Supports two floppy disk drives, 5.25″ (360 KB and 1.2
MB) and/or 3.5″ (720KB, 1.44MB, and 2.88MB)
Parallel port: One bi-directional parallel port which supports SPP, ECP,
and EPP modes
Serial port: Three RS-232 and one RS-232/422/485 serial ports. Ports can be configured as COM1, COM2, COM3, COM4, or disabled individually.
(16C550 equivalent)
KB/PS2 Mouse connector: 6-pin mini-DIN connector supports PC/AT
keyboard and PS/2 mouse. Additional 5-pin header supports PC/AT
keyboard for IPC applications
Real Time Clock Benchmark or equivalents, powered by lithium battery
for data retention
Watchdog timer: Can generate a system reset, IRQ15, or NMI. Software
selectable time-out interval (2 sec. ~128 min., 1 sec./step)
DMA：7 个 DMA 通道（相当于 8237）
中断：15 级中断（相当于 8259）
Power management: I/O peripheral devices support power saving and
doze/standby/suspend modes. APM 1.1 compliant