77
Address (hex) Description
00F0-00F0 Clear math co-processor busy
00F1-00F1 Reset math co-processor
00F8-00FF Match co-processor
0170-0177 Secondary PCI bus master EIDE driver (dual FIFO)
01F0-01F7 Primary PCI bus master EIDE driver (dual FIFO)
0278-027A Printer port (LPT2)
02E8-02EF Communications port (COM4)
02F8-02FF Communications port (COM2)
0378-037A Printer port (LPT1)
03BC-03BE Printer port (LPT3)
03F0-03F5 Standard floppy disk controller
03F6-03F6 Primary PCI bus master EIDE driver (dual FIFO)
03F7-03F7 Standard floppy disk controller
03F8-03FF Communications port (COM1)
04D0-04D0 Edge/level control register-INTCNTRL1
04D1-04D1 Edge/level control register-INTCNTRL2
0CF8-0CFF PCI configure space control register
Memory Addresses
Address Range (hex) Size Assignment
0000h to 9FFFFh 640 KB Base memory
0A0000h to 0BFFFFh 128 KB Video Ram
0C0000h to 0C7FFFh 32 KB Video BIOS
0C8000h to 0DFFFFh 96 KB BIOS Extension ROM (AT bus used)
0E0000h to 0FFFFFh 128 KB PnP BIOS/APM BIOS
00100000-FFFFFFFF Extended Memory
FFFE0000-FFFE3FFF 16 KB BIOS Rom Alias
FEC00000-FEC00FFF 4 KB APIC
FEE00000-FEE00FFF 4 KB APIC
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