8051 development board

Many years ago I did a project to use Apple2 for progamming the Intel 8051 MCU.

I had some inplementations of the MCU and I had to eraze and reprogram the UV version (8751) each time I was changing the code. This made the process very cumbersome and slow. But one day I came across a MCU with an EPROM which was put on a piggy-back socket on the back of the MCU. This was an amazing find and I soon made a card for Apple2 which had an SRAM chip shared by the Apple2 and 8051. In this way I could load the SRAM from the Apple2 at the touch of a button and then start the MCU and see the results. The program also could unassamble the machine code of the 8051 inside the Apple2 monitor.

I have put this on Github, just to preserve my work, I don't know if it would ever be used by anyone at all, but here it is:

https://github.com/rallepalaveev/Intel8051-devbrd

R.