ACP-1120 User’s Manual 118
12 IRQ3 Serial communication port 2
13 IRQ4 Serial communication port 1
14 IRQ5 Parallel port 2
15 IRQ6 Diskette controller (FDC)
16 IRQ7 Parallel port 1 (print port)
B.28 1st MB Memory Map
Table B.26: 1st MB memory map
Addr. range (Hex) Device
F0000h - FFFFFh System ROM
C8000h - EFFFFh Unused
C0000h - C7FFFh VGA BIOS
B8000h - BFFFFh CGA/EGA/VGA text
B0000h - B7FFFh Unused
A0000h - AFFFFh EGA/VGA graphics
00000h - 9FFFFh Base memory
B.29 PCI Bus Map
Table B.27: PCI bus map
Function Signals:
Device ID INT# pin GNT# pin
Onboard LAN1 AD24 INT E
Onboard LAN2 AD21 INT H GNT A
Bridge AD22 GNT F
PCI slot 1 AD31 INT B, C, D, A GNT A
PCI slot 2 AD30 INT C, D, A, B GNT B
PCI slot 3 AD29 INT D, A, B, C GNT C
PCI slot 4 AD28 INT A, B, C, D GNT D