Apple IIgs Text mode doubled

#31 Wed, 3 Jun 2015 - 14:08

CTRL-RESET doesn't drop me into BASIC. It just restart over again (like a power on)

Thanks very much for the explanation Gorgonops. I found a ROM replacement on ebay. I'm gonna try that and if it doesn't work, then the Mega II is the culprit. I'm gonna swap the main board.

Thanks very much for your help.

Pitou!

#32 Wed, 3 Jun 2015 - 18:50

Is the ROM on a socket or soldered in?

#33 Wed, 3 Jun 2015 - 23:47

on a socket

#34 Thu, 4 Jun 2015 - 01:26

Good Luck. Let us know what happened.

#35 Mon, 8 Jun 2015 - 00:24

Ok, swapped the ROM and it's the same. So the Mega II is the problem. Time to find another board.

Thanks everyone for your help!

Pitou!

#36 Mon, 8 Jun 2015 - 00:52

Good luck with that. Make sure you get the same board. Buy a frame and put the old board on it and hang it up as art when you replace the board. Title it "My First IIgs."

#37 Mon, 8 Jun 2015 - 20:03

Elfen said:
Good luck with that. Make sure you get the same board. Buy a frame and put the old board on it and hang it up as art when you replace the board. Title it "My First IIgs."

If I thought there were a chance in heck I could desolder the surface-mount keyboard controller IC from the bad board and put it on my bad IIgs' I'd PM about it, but I'm only moderately competent with through-hole rework, I'm sure attempting to swap the keyboard IC would totally end in tears.

(This is why I love my "new" Apple II+; it's all generic ICs, and a lot of them are even already in sockets.)