Appendix B Pin Assignments
143
B.27 1st MB Memory Map
Table B-27: 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.28 PCI Bus Map
Table B-28: PCI bus map
Function Signals:
Device ID INT# pin GNT# pin
Onboard LAN1 AD24 INT E
Onboard LAN2 AD21 INT H GNT A
Onboard SCSI AD20 INT A GNT E
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
Note: In the PCA-6180E2/F, LAN devices use "GNT A" signals via
PCI slot 1. Therefore, PCI slot 1 cannot be used for plug-in
bus master add-on cards such as SCSI cards or LAN cards.
