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Electronic specifications
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Memory map
03F0h - 03F5h Diskette Controller
03F6h - 03F7h Primary IDE - Sec. Diskette
03F8h - 03FFh Serial Port A (Primary)
0400h - 043Fh DMA Controller 1, Extended Mode Registers
04D0h - 04D1h Interrupt Controllers 1 and 2 Control Register
0678h - 067Ah Parallel Port (ECP)
0778h - 077Ah Parallel Port (ECP)
07BCh - 07BEh Parallel Port (ECP)
0CA0 - CA3h BMC Registers
0CF8h PCI CONFIG_ADDRESS Register
0CF9h NBX Turbo and Reset control
0CFCh PCI CONFIG_DATA Register
46E8h Video Display Controller
Address Range (hex) Amount Function
0 to 07FFFFh 640 KB DOS region, base system memory
0A0000h to 0BFFFFh 128 KB Video or SMM memory
0C0000h and 0DFFFFh 128 KB Expansion card BIOS and buffer
area
0E0000h to 0FFFFFh 128 KB System BIOS
0E0000h to 0EFFFFh 2 MB Extended system BIOS
FC000000h to FFFFFFFFh 64 MB PCI memory space
Address Resource