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- Path: news.ifm.liu.se!marcus
- From: marcus@lysator.liu.se (Marcus Comstedt)
- Newsgroups: comp.sys.amiga.hardware
- Subject: Cyberstorm060+CyberSCSI problem _really strange_!
- Date: 20 Mar 1996 16:28:04 GMT
- Message-ID: <4ipbmk$8ls@newsy.ifm.liu.se>
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-
- Argh. I should get a price for the most strange hardware bug of
- the week or something. Just listen to this:
-
- I have been having a bit of trouble with my CyberSCSI module for
- my Cybserstorm060 card. The thing is that after the computer has
- been on for about an hour, it is no longer possible to write to a
- SCSI disk without getting a checksum error. Reading is ok, though.
- I have had this problem with more than one disk, so I figured the
- SCSI board must be broken in some way.
-
- So I phone the people I bought it from (as I still have a lot of
- warranty left) and they told me to send it back. Ok, fair enough.
- Today I took the CyberSCSI out of the computer to send it back, but
- when I turned the computer back on again it would not boot. Just
- a yellow screen and a flashing power led (= early Guru). After some
- investigation I found out that I could boot again if I removed the
- 16Mb SIMM from the CyberStorm memory board, leaving the two 4Mb SIMMs.
- (Naturally modifying the straps to match the new configuration.)
-
- "Drat", I thought, now I have managed to fry the 16Mb somehow.
- Having not touched it at all, this sounded like an unlikely scenario
- however, so I gave it a little more thought. Realizing that I had
- installed the 16Mb _after_ the CyberSCSI, I put the SCSI board back,
- and the computer booted.
-
- I find this rather unbelievable. With the SCSI board in, the computer
- runs just fine (execept when trying to write to SCSI disks) and there
- seems to be no memory trouble whatsoever. Without the SCSI board, the
- computer refuses to boot when the 16Mb is in, but not if I take it out.
- Then everything works A-OK.
-
- What the hell is going on here? What is really broken? The CyberStorm,
- the CyberSCSI, or something completely different? (The 16Mb SIMM is
- 70ns BTW)
-
- Anyone ever heard of such a strange problem before?
-
- / Marcus
- --
- --------------------------------------------------------------------------
- Marcus Comstedt Lysator Academic Computer Society
- marcus@lysator.liu.se Linko"ping University, Sweden //
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