Re: Apple ][c - garbage all over screen on boot

["M. OMalley" <mooseNO_SPAM@SPAMmoveME.NOTto>]

"Bill Garber" <willy46pa@comcast.net> wrote in message
0cqdnbIxRo1w5NzfRVn-rQ@comcast.com">news:0cqdnbIxRo1w5NzfRVn-rQ@comcast.com...
>
> "M. OMalley" <mooseNO_SPAM@SPAMmoveME.NOTto> wrote in message
> news:d1r5c4$2ns4$1@news.wplus.net...
> : My Apple ][c is playing up and has garbage all over the screen on
boot-up,
> : and it doesn't access the disk drive.
> :
> : I last used the machine about 18 months ago, and it worked fine back
then.
> :
> : I've pulled the cover off and re-seated all the socketed chips several
> : times, but the problems remain.
> :
> : If I press RESET a heap of times, sometimes I can see "App e" - part of
> the
> : "Apple ][" greeting - appear at the middle top of the screen.  So, this
> : might mean that one or more of the EEPROMS is bad ??
>
> Sounds more like a ram IC is bad. Have you run the self-test?

No, how do I do this ?

Can I still do this if the machine wont boot ?

> Unless you like messing with it, I'd suggest a trade with me
> for a good working IIc. What is the model number on the bottom
> of the case.

Sounds good, but I am based in Queensland Australia.

P&P for an Apple ][c to you and back again might cost more than the machine
is worth or more than I could buy a replacement from eBay locally.

> : Also, anyone got any scans of the schematics for an Apple ][c ?
>
> I believe I do have them. Send me an email and I'll forward them
> to you right away.

OK, I'll do this.

> : Also, are Apple ][c ROMS/PROMS comtatible with Apple ][+ ROMS/PROMS ?
>
> IIc ROMs are not compatible with any other Apple II.

OK - I feared as much.  The ROMs in the ][c looked nothing like my ][+
ROMS - but it had been 18 years since I last owned a ][+, so I wasn't 100%
sure.
.
> Again, the IIc is a single eprom containing all of the ROM
> except keyboard and chargen. II and II+ have D0, D8, E0, E8,
> F0, and F8. Usually IIs can get away without D0 and D8, where
> the II+ has a different F8 that has autostart firmware.

OK, thanks.

All the best,

Mike "Moose" O'Malley
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 WEB: http://move.to/moose
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