Interger Rom error

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Last seen: 5 years 1 month ago
Joined: Feb 1 2013 - 00:06
Posts: 22
Interger Rom error

HI al,

So I have:
- Apple IIa, with Integer roms, running fine
- Apple IIb, with Applesoft roms, running fine

but when I put the Apple IIa integer roms in Apple IIb, I get the error on screen seen below on start.

Any idea of what could be wrong ?

Pics below of my Apple IIb, after I install the working Integer roms, and the error I get on start

Thanks all !!

http://imgur.com/a/77XHW

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Last seen: 3 hours 20 min ago
Joined: Jan 3 2011 - 11:34
Posts: 339
Re: Interger Rom error

Hi zonga,

I see you use an old motherboard (Rev 4 or before). The IC sockets are pretty fragile.
Do you have checked there is no bent pin inside the sockets and on the ROMs ?
What's going on when you put the Applesoft ROMs back into the Apple IIb ?

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Last seen: 2 months 2 weeks ago
Joined: Dec 3 2015 - 20:45
Posts: 63
Re: Interger Rom error

Did you try reseating the 6502? I imagine it got 'tweaked' a little putting in the ROM's
If there is no 6502 in the socket, it looks just like your photo.

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