Commodore Plus/4

So another new computer added to the collection. This one is a bit weird! After the Commodore 64, Commodore decided their next computer would be worse in pretty much every way. Although it was cheaper and more focused as a business computer with a built-in word processor, spreadsheet, database and graphing functionality. Not surprising that it was a bit of a failure.

Still, it has a bunch of games available as it is essentially a C16. And I do actually like the overall design. Kind of reminds me of an MSX.

As you can see in the photo I’ve connected up an SD2IEC to load the software from SD-Card.

I actually have two of these currently as one was bought for cheap as untested which didn’t work. The second was from eBay and was advertised as fully working. The fully working one didn’t however display the built-in applications so I suspected a faulty ROM. I managed to get a discount on the price I paid and swapped the “3 plus 1” ROM chips over from the other unit which sorted that issue.

Whilst I had it apart I also swapped the CPU over and found that both CPUs are working fine which is a relief as they are pretty rare. So on the faulty unit, I’m going to swap out the TED chip next as I expect that is the reason why it’s not working. Hopefully, I can get it back to full working order in the near future.

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