Blogs

 

All members are invited to blog on Applefritter. Weblogs should generally be of a technical nature and should be written in such a way as to still be readable and useful 50 years from now. Please do not embed outside media. Images and videos can be uploaded via the Media Browser. Files should either be attached to the blog post or uploaded to the file libraries.

 

When you post to your blog it will appear on this index and on your personal blog page. Once you've made a few posts, contact me about having a graphic added on the top of this page.


Preserving a NOS Basis 108

I was lucky enough to recently acquire a new-in-box Basis 108, a German-made Apple II clone with a Z80 coprocessor for CP/M. It's a big, heavy beast with a metal case and high-quality keyboard. The original owner was a Kaypro dealer who bought it for evaluation purposes and never used it. My original intent was to get it working and use it, but once I saw it, I realized that it needs to be preserved as is. 

 

Preserving a NOS Basis 108

I was lucky enough to recently acquire a new-in-box Basis 108, a German-made Apple II clone with a Z80 coprocessor for CP/M. It's a big, heavy beast with a metal case and high-quality keyboard. The original owner was a Kaypro dealer who bought it for evaluation purposes and never used it. My original intent was to get it working and use it, but once I saw it, I realized that it needs to be preserved as is. 

 

Almost there!

I replaced the HAL with a GAL I programmed and it made absolutely no difference.  That lead me to suspect he MMU (344-0010-B) of being fauklty and I was able to get hold of a replacement MMU temporarily.  I swapped the MMU over and it sprang to life!  The only remaining fault is thet the keyboard input is garbled, however as I have not replaced he Keyboard ROM and the original gets pretty hot, I think I can guess what the problem is.  My attention now is on how to replave the MMU.

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