Re: Help!!! i've got BIG troubles

From: Jo Even Skarstein <>
Date: Wed, 22 Oct 1997 12:18:48 +0200

On Wed, 22 Oct 1997, Tlcp wrote:

> Machine is working correctly without
> the AB040 fitted. Even Nemesis is work-
> ing fine...(exept with blow up !).
> But when i fit the AB on the motherbord
> and switch to 040, the Falcon doesn't
> boot at all (black screen), even if i
> try to reset....

Sounds like the DMA buffer-mod...

> I've got the following config:
> Falcon motherbord rev D/C
> with 14 Mo Ram (no important I guess),
> with fast (EDO) 16 Mo Simm
> 68882 33 Mhz fitted (not imporant to)

Try removing the FPU, it might have a negative effect on the
clock-signal. But this would normally be very subtle, nothing like the
problem you describe.

When I come to think of it, Doug advised me to remove the FPU as well
as the orange wire on the AB buffer-card to improve stability.

> Nemesis fitted, actually the inductor
> resistor were removed from the buffer
> mod.

Aha! I had the same problem when I fitted the Afterburner to my
Nemesis'ed Falcon. It wouldn't boot at all (just a black screen) until
I installed the inductor/resistor mod. I'm 99% sure that this is your
problem as well. The description of this mod can be found somewhere on
Titan/BSS/Doug Little's homepages.

> I must also say that my ab was working
> fine before Nem installation (except
> some DMA garbage, that's why i decided
> to install Nem !!!). And now the Falcon
> in 030 mode seem to work fine too (need
> some more extended tests to be sure, but
> it never failed for the moment)....

That's a unfortunate side-effect of the Nemesis buffer-mod, what works
fine in 030-mode doesn't work at all in AB-mode and vice-versa...

** Jo Even Skarstein
** beer - maria mckee - atari falcon - babylon 5
Received on on. okt. 22 1997 - 12:18:48 CEST

This archive was generated by hypermail 2.3.0 : ti. nov. 03 2015 - 20:07:53 CET