Wallbraker
New member
Greetings fellow Amiga lowers! (Solution found, see bottom of this post).
So I'm having some troubles with my Amiga 2000 Rev 6.2, in it I have a:
The problem I'm having is that with everything enabled I get Guru 8000 0004 (IIRC) every time I try to write to the SCSI drive.
Through some experimentation I have found this:
Possible solutions:
The first is not guaranteed to work. The other two are more attractive, if I some how can get only the BigRAM
to be found I could in buy another extra 4MB for the Impact so I could have a full 8MB in the 24bit DMA space.
Problem is I do not know how to do either of these, or if it is possible. Which is why I am writing here for help,
if any of you fellow wonderful Amiga lovers have any ideas, tips or solutions please reply, thanks in advance!
Solution found:
Using the Bigram utility that you can download from icomp's wiki, you can add the memory even if the A2360
RAM auto-config is disabled. Disadvantage is that I'm now 4MB poorer if this had worked out of the box, but
that is a very small price to pay considering that the Bigram adds about 112MB.
Cheers, Jakob.
So I'm having some troubles with my Amiga 2000 Rev 6.2, in it I have a:
- A2630 Rev. 9 (4MB installed and BigRAM)
- Impact A2000-HC+8 Series II (4MB installed with SCSI2SD drive)
- IOExpander
The problem I'm having is that with everything enabled I get Guru 8000 0004 (IIRC) every time I try to write to the SCSI drive.
Through some experimentation I have found this:
- Removing the A2630 works!
- Disable RAM auto-detection work!
- Making the A2630 only have 2MB RAM does not help.
- Removing the BigRAM does not help.
- Removing the IOExpander does not help.
- Disabling MC68030 caches does not help.
- I have not tried to insert the card into the first slot Zorro slot.
Possible solutions:
- I found this thread (from 1994!) that talks about replacing one of the ICs on the board.
- Lower the priority of the A2630 RAM so it's not used for DMA.
- Disable the auto-detection of the A2630 and then add the BigRAM manually.
The first is not guaranteed to work. The other two are more attractive, if I some how can get only the BigRAM
to be found I could in buy another extra 4MB for the Impact so I could have a full 8MB in the 24bit DMA space.
Problem is I do not know how to do either of these, or if it is possible. Which is why I am writing here for help,
if any of you fellow wonderful Amiga lovers have any ideas, tips or solutions please reply, thanks in advance!
Solution found:
Using the Bigram utility that you can download from icomp's wiki, you can add the memory even if the A2360
RAM auto-config is disabled. Disadvantage is that I'm now 4MB poorer if this had worked out of the box, but
that is a very small price to pay considering that the Bigram adds about 112MB.
Cheers, Jakob.
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