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https://github.com/tophercantrell/retro-sbcs

Single-board 6809, Z80, 6502, etc
https://github.com/tophercantrell/retro-sbcs

Last synced: about 7 hours ago
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Single-board 6809, Z80, 6502, etc

Host: GitHub
URL: https://github.com/tophercantrell/retro-sbcs
Owner: topherCantrell
Created: 2020-10-15T22:21:11.000Z (about 4 years ago)
Default Branch: main
Last Pushed: 2024-09-21T13:18:57.000Z (about 2 months ago)
Last Synced: 2024-11-17T10:16:45.650Z (about 7 hours ago)
Language: Assembly
Size: 101 MB
Stars: 4
Watchers: 3
Forks: 0
Open Issues: 0
Metadata Files:
- Readme: README.md

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README

# Single Board Computers in many flavors

All point-to-point wired on breadboards.

## 6502

6502 Top
6502 Bottom

- CPU: 65C02 running at 2MHz
- RAM: 16K (total of 32K as two banks of 16K switchable by jumpers or software plus 128 bytes in RIOT chip)
- ROM: 16K (total of 32K as two banks of 16K switchable by jumpers or software)
- IO: 6532 Riot chip (used by Atari2100)
- Serial: 6850ACIA

Complete info on the [6502](/6502/README.md) computer.

## Atari 2600 Cartridge Hack

[Atari 2600 Cartridge](/atari2600/README.md)

## 6809

6809 Top
6809 Bottom

- CPU: 68B09 running at 7.3728MHz
- RAM: 32K
- ROM: 16K (total of 32K as two banks of 16K switchable by jumpers or software)
- IO: 6821 PIA (used by TRS80 Color Computer)
- Serial: 6850ACIA

Complete info on the [6809](/6809/README.md)

## Z80

- CPU: Z80A running at 7.3728MHz
- RAM: 16K (total of 32K as two banks of 16K switchable by jumpers or software)
- ROM: 16K (total of 32K as two banks of 16K switchable by jumpers or software)
- IO: Z84C20 (PIO)
- Serial: 6850ACIA

## 8086 (V20)

TBD

# Programmer and Eraser

There are easier-to-use programmable ROMs these days. You can use an electrically erasable
programmable ROM instead of a UV erasable.

https://www.amazon.com/PRG-113-GQ-universal-programmer-Adapter/dp/B011HVON3A

## Assemblers

TODO link to opcodetools

## Monitor program

TODO