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Appendix D System Assignments 107
D.2 1st MB memory map
Table D-2: 1st MB memory map
Addr. range (Hex) Device
F000h - FFFFh System ROM
E000h - EFFFh Unused
D000h - DFFFh SCSI ROM
*CC00h - CFFFh Ethernet ROM
C000h - CBFFh Expansion ROM
B800h - BFFFh CGA/EGA/VGA text
B000h - B7FFh Unused
A000h - AFFFh EGA/VGA graphics
0000h - 9FFFh Base memory
* If Ethernet boot ROM is enabled
D.3 DMA channel assignments
Table D-3: DMA channel assignments
Channel Function
0 Available
1 Available
2 Floppy disk (8-bit transfer)
3 Available (Parallel Port)
4 Cascade for DMA controller 1
5 Available
6 Available
7 Available
** Parallel port DMA select 1 or 3