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Since I had a bunch of these late model M-Tech R418W2 486 PCI/ISA motherboards and RadRacer203 bought my last two I went ahead and dumped all the...

The IIc is not non-upgradeable; it's just less convenient to do so than the IIe. At the height of its popularity there were lots of aftermarket...

If you are patient you can get one for a lot less, i usually lurk on ebay and do offers on the items if the seller accept them, and if not i send pm...

If the ion trap magnet is separate from the yoke, you can flip the tube over so that the burned area is on the right instead of the left. Dwight

I am okay with people joining to post auctions on the following conditions: - They actually post in the auction section - They respond to queries...

I would look at the Apple IIe; the IIc is essentially a IIe without any expansion slots beyond what is already built in. It's a lot less expandable...

I would agree with the other posters in this thread. Apple II is more fun than a 128K Mac for most vintage computing fun. The Apple II uses a...

I don't keep track. Often when searching for something, I know I have, I come on something I completely forgot I had. It is just like an uncle giving...

I know that CompuPro had an 8085/8088 board that you could switch between them using an I/O port. Also, the S100 Computers "new" boards have several...

There was another RPN calculator but I don't recall the name ( lost in time ). HP was the main one. I had what I think was the first TI scientific...

And the Android would be just like a calculator. :-)

Probably not what you're looking for, but I have a virtually unused 12c (business). Entertaining offers. New Jerky.

It won't be easy to check everything. Try to have at least both drives working, so you can try swapping them.

Yes, it's the same as the one in any other original Commodore datassette. I've replaced it often with a similar sized VCR belt. The important thing...

Thanks, I found examples on line. The stand-alone would have the benefit of portability... -CH-

They don't make baling wire like they used to. The post are also for connectors as well. You can only get one wrap but yes one can wire wrap to...

That's the high end of reasonable, it does look like it's pretty clean and is at least shown to not have smoked when you powered it up! The SD...

That fits right in with the normally seen eBay prices. You should put up your auction and post a link to it here. smp

Phoenix Enterprises still carries a lot of wire wrap supplies for decent prices: https://www.peconnectors.com/wire-wrap-sockets-and-headers/ I...

Thanks - the uIDE warm boot is working now. Next up: Merge BIOS and hidden BIOS. The cs30bios.asm file is in 8080 so I need to convert to Z80 first....

The head moves back correctly. As testing equipment, i only have a multimeter. For repairs, i have a soldering iron

Its a ABI Electronics ICT - 24 rebadged as an RS Components device. This is the auction: https://www.ebay.co.uk/itm/123602450740 There is a...

What about an online calculator: http://www.alcula.com/calculators/rpn/ Or an HP-15C online and downloadable: https://hp15c.com/ Android...

When the drive is powered off, try to move the head manually (gently) around the middle of its path, then power on and try a format, does the head go...