Rev 1.D.3 A1200 Motherboard? Bugs/Expansion? P5 1230-IV also
Hanging Chad
Due to problems with a GVP 1230 Turbo II+ and it's GVP 1291 SCSI adapter
on a Rev 1.D.1 A1200, I "upgraded" to a *different* A1200 with a revision
ID of:
Rev 1.D.3 No docs out there seem to mention this revision! Help!
I'm having lockup problems I can't correct. Please see below.
To this Rev 1.D.3 A1200, I added a Phase5 Blizzard 1230-IV Turbo Board.
Also a 68882 FPU chip. I noticed upon power-on or reboot a dark screen
(normal) with portions of a few raster lines turning blue just for a
moment. Are these momentary blue lines normal for the P5 Blizzard 1230-IV?
The blue lines vanish if I boot with the 2 key held down (disables the
board).
No I don't want to use MapROM (I didn't use anything like this on the
other 1200). The RamSpeed jumper is open, leaving me running at 70ns RAM
access, which also means the system should be very stable although not
quite as fast (I plan to add the SCSI option hopefully, which requires
the 70ns setting anyway).
But it's LESS stable. When I plugged in my PCMCIA modem and powered-on,
the 1200 sat there not booting. I hit CTRL-Amiga-Amiga and the machine
booted correctly. In minutes though, I had Miami and Telnet both lock up
the machine just as I was attempting to start them. Other freezes have
taken place and this is not normal behavior.
I'm using the standard CBM power supply and doubt this is the problem, as
my earlier Rev 1.D.1 A1200 with GVP 1230 Turbo II+ worked fine with it.
Both systems use the same ROM (3.0) and the exact same HD & software and
8MB of Fast RAM. This (P5 12300-IV) actually seems a bit slower than my
other 030/1200 system (yet reviews say the Phase 5 card is supposedly
faster than the GVP card). JPEG decoding also seems jerkier. The 68882
was previously used, though I doubt that could cause such problems.
Anyway are there any hacks required for the Rev 1.D.3 motherboard? And
also what about it's PCMCIA slot? Please only *knowledgeable* replies on
the hack question. Note the 3 in the Revisions. It's NOT a d.1 revision.
I only speak English, and my newsfeed is spotty so please cc: me a reply.
Thanks in advance,
Hanging Chad
Patrick Ford
>
> I'm using the standard CBM power supply
If you mean the original A1200 PSu, then you could have saved a lot of
typing by posting only that information. Occam's razor says the dismal lack
of power is the case of your trouble.
Don't expect it to work until you get enough power to run it. A500 PSU delivers
about twice the power of the A1200 psu, but you would do better with one taken
from an IBM contemptible.
--
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+ =================================+
Patrick Ford
Auckland, New Zealand
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Dangling Chad
> Hanging Chad wrote:
> > I'm using the standard CBM power supply
>
> If you mean the original A1200 PSu, then you could have saved a lot of
> typing by posting only that information. Occam's razor says the dismal lack
> of power is the case of your trouble.
AFAIK there are several versions-- some better than others. I
disconnected my 3 external floppy drives-- but no improvement. Even with
the Surf Squirrel gone (and a PCMCIA modem in it's place) problems still
abound. Removing those floppies should have changed something if it was
really the PSU to blame. Though I'd LOVE to think it's just the PSU. I
have to wonder about this rare-ish 1D.3 rev motherboard I have. It must've
been short-lived for a reason. Web searches have turned up 0 info on this
motherboard.
> Don't expect it to work until you get enough power to run it. A500 PSU delivers
> about twice the power of the A1200 psu, but you would do better with one taken
> from an IBM contemptible.
OK, I'll try that. What about the TICK and related issues? I recall
that that 2000 had some issues with a timing signal from a PC PSU,
thus requiring a jumper chage. Is the 1200 similarly affected?
BTW who supports the Blizzard boards now? I forgot their name/URL/email.
Thanks,
Chad
PS a cc: reply would be cool
Marcel DeVoe
> On 25 Nov 2000, Patrick Ford wrote:
>> Don't expect it to work until you get enough power to run it. A500 PSU delivers
>> about twice the power of the A1200 psu, but you would do better with one taken
>> from an IBM contemptible.
> OK, I'll try that. What about the TICK and related issues? I recall
> that that 2000 had some issues with a timing signal from a PC PSU,
> thus requiring a jumper chage. Is the 1200 similarly affected?
There's no tick from the supply of A1200s and A4000s so you're safe with a
standard PC supply. Just make sure you get the voltages/connections right.
;-)
> BTW who supports the Blizzard boards now? I forgot their name/URL/email.
The company that took over production of the Phase5 boards is DCE
> Thanks,
> Chad
> PS a cc: reply would be cool
Done!
--
Marcel J. DeVoe - mde...@shore.net - Team *AMIGA*
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and "DIY A4000 Tower for $45" @ http://www.shore.net/~mdevoe