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- Path: deimos.rz.uni-osnabrueck.de!hufer
- From: hufer@yamato.physik.Uni-Osnabrueck.DE (Hartmut Ufer)
- Newsgroups: comp.sys.amiga.hardware
- Subject: A2000 hardware problem
- Date: 2 Feb 1996 14:03:07 GMT
- Organization: Fachbereich Physik, Universitaet Osnabrueck, Germany
- Message-ID: <4et5ir$gf5@deimos.rz.uni-osnabrueck.de>
- NNTP-Posting-Host: yamato.physik.uni-osnabrueck.de
-
- I spend several nights trying to fix this problem myself
- but had no success. I think there is something wrong with
- my motherboard but I am unable to locate the error. Before
- I buy new chips and start to replace all ICs on the board
- I would like to ask for help in this news group.
-
- So here is my story:
- The first time I noticed this problem was when got my A2410
- Tiga board I want to use with NetBSD 1.1. The board came with
- no documentation but a floppy containing the a2410.device the
- EGS driver and the developer material with demo programs.
- Depending on the hardware configuration my A2000 works flawlessly,
- crashes after copying some megabytes from disk to disk, or does
- not boot at all:
-
- Config 1: A2630, A2091 slot 1 INT2, A2410 slot 2 INT6
- If I start LoadTiga everything is fine. I load the Lines demo
- (or anything else from the demo drawer) and the system hangs.
- INT6 remains low and the IPL lines on the processor show the
- right interrupt level 6. I remove the interrupt jumper on the
- A2410 INT6 goes up, system works again, Lines demo hangs.
-
- Config 2: A2630, A2091 slot 1 INT6
- System does not boot, INT6 is low.
-
- Config 3: A2630, Masoboshi MC704 SCSI host adapter in slot 1,
- A2410 slot 2 INT2, Multiface-Card III slot 3,
- Picasso II slot 4
- System works like a charm: Lines demo runs on Picasso and
- A2410 while copying 60MB from one disk to another.
-
- Config 4: A2630, A2091 slot 1 INT2, MC704 memory expansion in
- slot 2, MFC III slot 3
- System ok! NetBSD 1.1 compiled all three stages of gcc-2.7.2
- in about 30 hours.
-
- Config 5: Like Setup 4 but additional Picasso II board in slot 4
- System seems to work but crashes (dark power LED, dark gray screen,
- trapped in that state) after copying some MB of data from one disk
- to another.
-
- Any suggestions how the fix this error? Is the INT6 problem
- related to the problem I have with Setup 5?
-
- Any help appreciated
- Hartmut
-