Aaeon SBC-400 User Manual page 11

• CPU: Intel 486SX/DX/DX2/DX4, 486SX/DX/DX2/DX4-S;
AMD Am486DX/DX2/DX4, DX2+/DX4+; Cyrix Cx486DX/DX2/M7;
UMC U5
• Bus interface: ISA (PC/AT) bus
• Data bus: 32 bit
• Processing ability: 32 bit
• Chipset: ALI 1489/1487
• RAM memory: 1 MB to 128 MB, two 72-pin sockets
• Shadow RAM memory: Supports system and video BIOS of up to 256 KB
in 32 KB blocks
• L2 Cache memory: On-board 128 KB, up to 512 KB (DIP package)
• Enhanced IDE HDD interface: Supports up to two enhanced IDE (ATA-2
bus) large hard disk drives or other enhanced IDE devices. Supports
mode 3 and mode 4 hard disks (minimum data transfer rate of 11.1 MB/
sec).
• Floppy disk drive interface: Supports up to two floppy disk drives, 5.25"
(360 KB and 1.2 MB) and/or 3.5" (720 KB, 1.44 and 2.88 MB).
• Bi-directional parallel port: SPP/EPP/ECP standards.
• Serial ports: One serial RS-232 port and one serial RS-232/RS-422/RS-
485 port, jumper selectable. Both with 16C550 UARTs with 16-byte FIFO
buffer.
• IRQ SELECTION FOR COM PORTS:
COMA: Supports COM 1/2/3/4 & address is selectable; IRQ3/4/11/12
COMB: Supports COM 1/2/3/4 & address is selectable; IRQ3/4/11/12
• BIOS: AMI WinBIOS
• Watchdog timer: The time interval is software selectable from 2 to 32
seconds (16 steps, 2 seconds per step). Can generate a system reset.
• PC/104: 104-pin connector for a 16-bit bus
• DMA channels: 7
4 SBC-400 User's Manual