Author Archives: blogmywiki

Run BASIC on a BBC micro:bit

Posted on May 3, 2021 by blogmywiki

It was recently BASIC’s 57th birthday, the programming language many of us first used to do any computer programming on computers from the 1970s and 1980s like the Commodore PET, Sinclair ZX Spectrum or Apple 2. Worth remembering too that … Continue reading →

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Drive 4 digit 7-segment LED displays direct from a micro:bit

Posted on April 3, 2021 by blogmywiki

I bought a bag of random 7-segment LED displays to play around with, originally with the idea of adding them to the address and data busses on my 6502 breadboard computer. That became a bit tricky, but I got thinking … Continue reading →

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6502 breadboard computer part 8 – next steps

Posted on April 2, 2021 by blogmywiki

I recently achieved my goal of making a 1970s-style 6502 breadboard computer that I can use to practice machine code programming. It has a hexadecimal keypad for entering instructions, a 16×2 alphanumeric LCD display and a very basic monitor program … Continue reading →

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6502 breadboard computer part 7 – working monitor program!

Posted on March 21, 2021 by blogmywiki

I love it when things work! Ok, it wasn’t entirely plain sailing, but progress on this has been rapid in the last few months. A quick recap: As a child in the 1970s I wanted my own self-contained single-board computer … Continue reading →

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6502 breadboard computer – part 6 – shift key

Posted on March 20, 2021 by blogmywiki

Last time I added a 4×4 keypad to my 6502 breadboard computer so I can enter opcodes as hexadecimal numbers, but I was worried that I needed more keys and didn’t have enough I/O pins left. To make a self-contained … Continue reading →

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