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- Path: ccn.cs.dal.ca!aa783
- From: aa783@ccn.cs.dal.ca (David Oakes)
- Newsgroups: comp.sys.amiga.hardware
- Subject: Re: Put 2.04 ROM in 1.2 500, red screen problem, Help!
- Date: 31 Dec 1995 13:34:44 GMT
- Organization: Chebucto Community Net
- Message-ID: <4c63hk$kob@ra.isisnet.com>
- References: <4c01bq$d44@muss.CIS.McMaster.CA> <4c1ctj$1n@muss.CIS.McMaster.CA>
- NNTP-Posting-Host: ccn.cs.dal.ca
- X-Newsreader: TIN [version 1.2 PL2]
-
- D.R. Ward (u9408669@muss.cis.McMaster.CA) wrote:
- : In article <4c01bq$d44@muss.CIS.McMaster.CA>,
- : F.P. Nezavdal <u9301732@muss.cis.McMaster.CA> wrote:
- : >
- : >Hi, I picked up a new 2.04 ROM for a friend's 500, and installed it. All
- : >I get is a red screen, which lasts about 10 secs, then moves on to display
- : >some crazy patterns. So, I put back the old 1.2 ROM, and all was fine
- : >again. I then put the 2.04 into my Kwickstart 1000, and it works fine,
- : >so it appears it is not the chip. Anyone have any suggestions for me?
- : >What could be wrong, or at least where should I start looking? Thank for
- : >any replies :)
-
- : I had the same problem installing a 2.04 in my A500. In some cases, you
- : have to put a jumper wire across two of the pins on the 2.04 ROM...
- : Unfortunately, I can't remember the pins and I would have to open my
- : machine to check.
-
- Rev 5 A500 motherboards require a jumper wire between pins 1 and 31 in
- order to get the ROM to function correctly.
-
- There is usually a U shaped indentation on one end of the ROM, the pin
- numbering goes counter-clockwise from the indentation. The wire should
- go over the top of the ROM so that it doesn't interfere with the socket._
-
- --
- ______________________________________________________
- | | |
- | /// | Replies to: |
- | David Oakes, \\\/// | aa783@ccn.cs.dal.ca |
- | \XX/ | or: d.oakes4@genie.com |
- | Dartmouth, Nova Scotia, | or: FIDO: 1:251/18.1 |
- | Canada | Member: Team Amiga |
- |_________________________|____________________________|
-