Tag Archives: 6502

Noughts and crosses

Posted on May 7, 2023 by blogmywiki

I just inherited a load of books on programming the 6502 processor in assembly language (and a Kim-1 computer, more on that later!). Among them was an intriguing 1980 book by Rodnay Zaks called 6502 Games. Zaks wrote what, for … Continue reading →

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Cheap KIM-1 clone

Posted on July 26, 2021 by blogmywiki

I’ve written before about how the KIM-1 (my brother’s) was the first computer I ever used, and how the very first programming I did as a child was 6502 assembler rather than BASIC. This led to me to make little … 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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