Computer Hardware User Manual

93 Appendix B
B.27 1st MB Memory Map
B.28 PCI Bus Map
B.29 PCI-X bus map
Table B.27: 1st MB memory map
Addr. range (Hex) Device
E0000h - FFFFFh BIOS
CC000h - DFFFFh Unused
C0000h - CBFFFh VGA BIOS
A0000h - BFFFFh Video Memory
00000h - 9FFFFh Base memory
Table B.28: PCI bus map (for VG, G2 version)
Function Signals: Device ID INT# pin GNT REQ
Onboard LAN2 AD21 INT C GNT 2-1 REQ 2-1
PCI slot 1 AD31 INT B, C, D, A GNT 0 REQ 0
PCI slot 2 AD30 INT C, D, A, B GNT 1 REQ 1
PCI slot 3 AD29 INT D, A, B, C GNT 2 REQ 2
PCI slot 4 AD28 INT A, B, C, D GNT 1-1 REQ 1-1
Table B.29: PCI-X bus map
Function Signals: Device ID INT # pin GNT REQ
PCI-X slot1 PX-AD31 PX-INT A, B,
C, D
PX-GNT A PX-REQ A
PCI-X slot2 PX-AD28 PX-INT A, B,
C, D
PX-GNT D PX-REQ D