8052 CPU card for RC2014 Bus part 2

December 31, 2018

It’s been a while since I posted about the 8052 CPU card for RC2014 Bus and heres a update to where i got to with this interesting RC2014 project.

The original 8052’s are still available but originally used UV erasable EPROM or OTP PROM for their program memory. So instead I’ve been using a modern FLASH memory version of the 8052, a AT89C5252 with great success.

The original 8052-BASIC has was good but had a number of software bugs. Fortunately, there had been a number of improvements over the years and the version I’ve been using is V1.31 which can be found here:

8052-BASIC needs a couple of K’s of RAM to operate. For this I’ve been using a standalone 32K-byte SRAM card.

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