6502 Homebrew Computer using the 6530 TIM Chip - Nakazoto/Hellorld GitHub Wiki

I designed and built this 6502 based computer decades ago. It uses the MOS Technology 6530-004 TIM monitor chip originally released in March 1976. I use a serial connection to my main computer using PuTTY running at 300 baud as the terminal emulator. The TIM uses a JSR to 0x72c6 type a character.

This is the hand complied machine code:

And here is the code as entered into the 6502:

.M 1000 A0 00 B9 11 10 F0 07 20

.M 1008 C6 72 C8 4C 02 10 00 0E

.M 1010 10 20 48 45 4C 4C 4F 52

.M 1018 4C 44 21 00 07 00 0B 02

For more information; please see my YouTube video: https://youtu.be/tdzJDQhEao0

Life with David