Archive for June, 2009

Disk II interface updates #15

Tuesday, June 23rd, 2009

Ok, did my deep dive of USB standards and think I have a handle on the technology.

I tweaked the code to make it look like a Mass Storage device using bulk only protocol to the host. The AVR handling the USB interface will simply transfer the USB mass storage commands/data/status between the AVR handling the disk interface and the USB bus.

So far the basic transfer is not working, but I think I have a good grounding on the technology, and now the process becomes a debug effort.

Stay tuned…

Apple ][ Repair Services

Thursday, June 18th, 2009

I receive an occasional query regarding Apple ][ repair services. I have considered offering repair services, but feel that frequently, problems are traced back to intermittent connections between sockets and chips on these old boards. Apple didn’t use the best sockets in it’s products and once you start having intermittent problems with sockets, they probably aren’t going to stay away for long. Because of this, I feel that it would be very hard to provide a repair service that would consistently return boards that are reliable over the long haul.

Creative Solutions does offer repair services, though I am not sure if they still are in business. You can try contacting Creative Solutions at or phone (937) 429-5759 M-F 9-5 Eastern.

I really feel that your best bet is to find a fellow vintage computer hobbyist in your area that would be willing to work with you in troubleshooting your board. Half the fun of these old machines is learning how to fix them up and get them back into working order.

Apple II Service Notes Posted

Thursday, June 18th, 2009

An anonymous contributer sent me some pretty good notes on servicing Apple II computers. I have put them into PDF format and put a link from my repair page to them.

My repair page.