home *** CD-ROM | disk | FTP | other *** search
- Path: library.erc.clarkson.edu!matottsd
- From: matottsd@craft.camp.clarkson.edu (Scott D. Matott)
- Newsgroups: comp.sys.amiga.hardware
- Subject: Trouble w/ 8520 !!! Please Help!
- Date: 18 Feb 1996 16:51:15 GMT
- Organization: Clarkson University
- Message-ID: <4g7le3$e5l@library.erc.clarkson.edu>
- NNTP-Posting-Host: craft.camp.clarkson.edu
- X-Newsreader: TIN [version 1.2 PL2]
-
- Hello,
- I have an A2k with an IDE HD controller and 2 megs fast ram.
- I recently lent it out to my brother, who I think may have
- plugged a printer into the parralell port whilest the
- computer was on. Ever since this incident, my Amiga
- displays the following symptons,
- 1) Turns on, HD lights whirs (self test I believe)
- 2) Normal screen Colour cycle (Amiga self tests)
- run by.
- 3) Then 2nd floppy drive light flicks on, stays
- on.
- 4) Screen goes black, with purple lines sometimes
- drifting up it.
-
- I have self diagnosed this to be an 8520 problem, since
- it appears to me that the computer finishes its own self checking
- and then attempts to check the external drives (as it normally would)
- these drives however are the perrogative of the 8520 chip, which
- could have been zapped when my brother plugged in the printer,
- thus the computer recieves bizzare data and crashes. The fact
- that it is an chip problem and a drive problem I arrived
- at by unplugging the drives from the mother board, something
- that would normally just cause two dead drives to ring up
- and send the Amiga booting from my HD. With the drives
- gone I still noticed the same sequence of events. Another thing
- I noticed is that the keyboard runs and survives it own self test
- and infact pressing L-Amiga R-Amiga and ctrl will cause a soft
- reset. I know the Amiga has 2 8520s controlling various I/O
- functions and see the keyboard working as a sign that
- one of them is still functionally.
- Question:
- Is all or any of this right? And if so, could I
- confirm it by swapping the 8520s? And if it is the
- 8520s where can I get some?
- Thanks all,
- Scott Matott sXe
-
- --
- Scott D. Matott sXe
- matottsd@craft.camp.clarkson.edu
-