Specifications

PC/II+p Board Technical Reference Manual 82
MT002615 ©1999-2001, Megatel Computer Corporation
8.4 DMA Channel Map
Table 44 DMA Map
DMA REQUEST NUMBER
1
SOURCE DESCRIPTION
DRQ0
DRQ1
DRQ2
Floppy Disk Controller
DRQ3
DRQ4
M1543C Cascade for DMA Controller 1
DRQ5
DRQ6
DRQ7
NOTES
(1) DMA request numbers are enumerated from 0 through 7 per the conventional AT standard. Two DMA
controllers, the first containing four 8-bit channels (0-3 – DRQ0-DRQ3) is cascaded to channel 0 of the
second controller (DRQ4). Controller #2 contains four 16-bit channels.