#A2620 Problem
7 messages in this thread
A2620 board boots less than 10 percent of the time on my system even when
Supra Wordsync hard card is disconnected from the power supply and removed
from its slot. In fact this happens when all cards and peripherals are
removed from the Amiga. The Amiga and all peripherals work properly at all
times when the A2620 is removed.
On those occasions when the A2620 boots, there is an error message
displayed saying "Autoconfigure out of memory space. However the system
will continue to boot up despite the error message to either the 68000 mode
or the 68020 mode, it doesn't seem to matter.
After a successful cold boot with the A2620, the system will survive a warm
reboot most of the time. And the avail command shows the full 7 megs
available. However, most of the time the hard drive will freeze.
When the A2620 won't do a cold boot, reseating the board in its slot
sometimes helps and sometimes it doesn't. In fact once I thought everything
was working properly, but after I put the Amiga's cover back on the machine
would no longer boot.
The A2620 card is apparently good since I took it to AmiComp and it worked
on another Amiga with no apparent problems.
All in all this problem reminds me of the time I added memory to my old
A1000 and it wouldn't work until I had the pal chips grounded. Any ideas?
Roger
Roger,
Some of the older A2000s required a few minor modifications
(upgrades) to the motherboard to correct some timing problems when used
with the A2620.
Your dealer's tech should be able to determine if they've been done
and if not…do them for you fairly quickly (about 10 minutes actual work
on the motherboard).
Don
Thanks for the reply Don. It looks like my 2000 is headed for the shop.
Lucky for me I held on to my 1000 for backup just in case of situations
like this.
Roger Roger
Roger:
Check the ROM's on the board, there have been several updates to them, and
you might have an older revision. I don't know the part numbers off hand,
but perhaps Dave Minnich over on CBMSER forum can tell you if the ROMS you
have are older ones or not.
-Mike Schiller
In sunny Fort Lauderdale
Thanks Mike. I'll let the technician at my dealers shop take care of the
problem.
Roger Roger
I agree with Mike. If your A2620 has ROMs that end with a part number of
-01 or -02 (These generate a yellow screen with text if you hold down both
mouse buttons when booting), then it is suggested to replace them with with
part #s that end in -04. These Roms can be identified as the boot screen is
white with blue lettering. They are the same as the A2630 ROMs.
-Greg
Thanks Greg.
The A2620 does boot with a yellow screen so I'll pass your suggestion along
to my dealer.
Roger Roger