Subject: Re: installing 1.0
To: None <amiga-dev@sun-lamp.cs.berkeley.edu>
From: David Jones <dej@eecg.toronto.edu>
List: amiga-dev
Date: 08/11/1994 20:43:34
> black bar down the middle of the screen at times. I thought this
> was already fixed.
No. This is a simple problem: when you turn off sprite DMA, you must also
zero out the data register. In the meantime:
#include <unistd.h>
#include <fcntl.h>
char zero[4] = { 0,0,0,0 };
main()
{
int fd;
fd = open("/dev/mem", O_RDWR);
lseek(fd, 0xDFF144, 0);
write(fd, zero, 4);
close(fd);
}
This must be compiled setuid root (or otherwise to have access to
/dev/mem).
This problem was present from day one, was fixed (by me) and then crept
in again when chopps cut over to views.
--
David Jones, M.A.Sc student, Electronics Group (VLSI), University of Toronto
email: dej@eecg.toronto.edu, finger for PGP public key
finger dej@torfree.net for latest Toronto Free-Net information
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