I am working on refubishing an Apple IIe, and have tracked down many oroginal add-on cards. Does anyone know of a source for the optional speed chips used for the Mockingboard? I understand the following IC's are compatible, unfortunately, Google searches seem to only present data sheets .
* SC-02
* Arctic-02
* SSI-263P
* SSI 263AP
* 78A263A-P
any pointers would be appreciated, thank you for your time.
[quote=jbailey]
I am working on refubishing an Apple IIe, and have tracked down many oroginal add-on cards. Does anyone know of a source for the optional speed chips used for the Mockingboard? I understand the following IC's are compatible, unfortunately, Google searches seem to only present data sheets .
* SC-02
* Arctic-02
* SSI-263P
* SSI 263AP
* 78A263A-P
any pointers would be appreciated, thank you for your time.
[/quote]
They haven't been manufactured in many years. Old stocks ran out a long time ago. They are extremely hard to find. They are extremely expensive if you do find someone that has them. They seem to be selling for $60-$80 each, and sometimes people are asking more. I've seen them occasionally on eBay.
One pointer is you really only need one. There are basically no game titles that I know of that use more than one speech chip.