Re: Who can I send my Apple II card to for Repair?

[Wayne Stewart <waynes@intergate.bc.ca>]

> Uh oh.  First things first.  How do I determine which chip is the ROM/EPROM/EEPROM
> chip?
>
> There are two chips to choose from (at least from my experience with ROMS):
>
> 1)  Closest to Slot connector on Card.  I assume this is ROM in 6502 language that the
> Apple II computer uses for Boot code, etc.
> 24 pins, window Covered with a Sticker
> labeled:
> TMS 2732A-20JL
> LHE 8801
>
> 2)Right next to the processor on the card.  I assume this is the OKS ROM, which I need
> 28 Pins, window covered with sticker
> labeled:
> TMS 27C256-2JL
> LBP8736

They're both  EPROMs


>
> Could anyone test Chip#2 to see if it still has ROM code on it?

Anyone with an EPROM programer should be able to read the code on an EPROM.
As in a program on a disk it's unlikely the complete program is gone,
howeverlike a regular program if one single byte has been changed it
can crash the whole program.

     Wayne