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From: l41388@ci.ist.utl.pt (Luis Filipe Silva Almeida)
Newsgroups: comp.os.386bsd.bugs
Subject: DMA BUG !!!!!!!!
Date: 5 May 1995 18:57:29 GMT
Organization: Instituto Superior Tecnico
Lines: 18
Message-ID: <3odsep$27b@alfa.ist.utl.pt>
NNTP-Posting-Host: ci.ist.utl.pt
Summary: DMA BUG !!!!!!!!
X-Newsreader: TIN [version 1.2 PL2]
Hi!
I'm trying to make a transfer mem to mem by DMA but i receive an error message
from EMM386 - 'DMA invalid Command' or something like that when i step thru
the instructions :
mov al,1
out 8,al
which is the dma command port, in documentation i possess, it says that
activating bit 0 on port 8 will cause a start transfer mem to mem on the dma
reading from channel 0 and writing to channel 1. I would appreciate any
useful information about this subject.
my email : l41388@alfa.ist.utl.pt
My alias : Satan
My Name : Luis Almeida