21
380-38F SDLC, Bisynchronous 2
3A0-3AF Bisynchronous 1
3B0-3BF Monochrome Display and Printer Adapter (LPT1)
3C0-3CF Reserved
3D0-3DF Color/Graphics Monitor Adapter
3E8-3EF Serial Port 3
3F0-3F7
Diskette Controller,ALI1543 SIO CONFIG INDEX
PORT(3F0)
3F8-3FF Serial Port 1
443 Watch dog timer enable
843 Watch dog timer disable
1 st MB Memory Address Map
Memory address Description
00000-9FFFF System memory
A0000-BFFFF VGA buffer
C0000-CBFFF VGA BIOS
*D6000-DA000 DOC 2000
E0000-FFFFF System BIOS
1000000- Extend BIOS
*Default setting
IRQ Mapping Chart
IRQ0 System Timer IRQ8 RTC clock
IRQ1 Keyboard IRQ9 Unused
IRQ2 Cascade to IRQ Controller IRQ10 Unused
IRQ3 COM2/COM4 IRQ11 Unused
IRQ4 COM1/COM3 IRQ12 PS2 moues
IRQ5 Unused IRQ13 FPU
IRQ6 FDC IRQ14 Primary IDE
IRQ7 Printer IRQ15 Secondary IDE
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