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- Path: news.sinet.slb.com!usenet
- From: bar@canuck.englewood.geoquest.slb.com (Bernhard A. Rieckhoff)
- Newsgroups: comp.sys.amiga.hardware
- Subject: Re: A500 and KS 2.04 Help Needed
- Date: 11 Apr 1996 14:33:41 GMT
- Organization: Schlumberger
- Message-ID: <4kj585$7mq@ohnasn01.sinet.slb.com>
- References: <Dpn0sp.B8H@linex1.linex.com>
- <1190.6674T714T586@studbox.uni-stuttgart.de>
- NNTP-Posting-Host: 163.185.53.83
- X-Newsreader: knews 0.9.3
-
- In article <1190.6674T714T586@studbox.uni-stuttgart.de>,
- Snowy@studbox.uni-stuttgart.de (Nicholas Stallard) writes:
- SNIP..
- >HH> A500's mother board. She told me that since my MB is Rev. 5, I needed to
- HH> either by a ROM switcher or do a soldering job myself. I wonder if anyone
- HH> has the instructions to do this modification.
-
- >
- SNIP...
-
- I have an A500, rev 5 b , My 2.04 rom had a wire soldered from pin 1 to 31
- (i think), otherwise it was just normally plugged in. When I got my 3.1 rom
- I first just stuck it in, that didn't work. then I reproduced the jumpering
- on the 2.04 rom (I stripped a braided wire and wire-wrapped a strand to the
- two pins). That also failed, but I had a snippet from CSA.Hardware and
- followed the destructions below, -worked fine for me. (BTW I didn't solder,
- just inserted copper strands into the relevant pin sockets.I also didn't
- buy an additional socket.I did reproduce the shorts and bent pin though.)
-
- -----begin quote
-
- On a Rev 3 & 5 A500, the ROM must have some jumpers and a 40 pin socket
- attached for it to work properly.
-
- On the socket, jumper pins 1 & 31. On the ROM, bend pin 31 so that it will
- not go into the socket. Jumper (on the ROM) pins 31 & 21. Insert the ROM
- into the socket, and the socket into the motherboard. When finished, pin 31
- of the ROM should be hanging outside the socket, not connected to anything
- except the jumper wire that you added.
-
- ______________________________________________________________
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- \______________________________________________________________/
-
- ------end quote
- --
- PLEASE REPLY TO: brieckhoff@houston.geoquest.slb.com
- Bernhard Rieckhoff Sr. Geophysicist, Schlumberger-GeoQuest
- Denver, CO USA Voice (303) 486-3204 FAX (303) 694-4690
- *Opinions expressed here are unlikely to reflect those of my employer*
-
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