User manual

79 POD-6552 A2 User Manual
Appendix D System Assignment
D.2 1st MB memory map
D.3 DMA channel assignments
Table D.2: 1st MB memory map
Addr. Range (Hex) Device
F0000h-FFFFFh System ROM
D0000h-EFFFFh Unused(reserved for Ethernet ROM)
C0000h-CFFFFh Expansion ROM(for VGA BIOS)
B8000h-BFFFFh CGA/EGA/VGA text
B0000h-B7FFFH Unused
A0000h-AFFFFh EGA/VGA graphics
00000h-9FFFFh Base memory
Table D.3: DMA channel assignments
Channel Function
0 Available
1 Available (audio)
2 Floppy disk (8-bit transfer)
3 Available (parallel port)
4 Cascade for DMA controller 1
5 Available
6 Available
7 Available