Here is my latest (and most probably final) take on 80's home computer magic:
The most computer from the least logic or the shortest way from TTL to Space Invaders.
Quick note: This is a free and non-commercial project. I am in no way associated with any activies selling this as a product. Any such activity represents a license violation. Individual licenses apply for hardware and software parts. Please refer to the applicable documentations for detailed licensing information.
Introductory video: https://www.youtube.com/watch?v=L1oECH6rPvs
Reference manual: https://docs.google.com/document/d/1-nDv_8WEG1FrlO3kEK0icoYo-Z-jlhpCMiCstxGOCjQ/edit?usp=sharing
Visit my YouTube channel: https://www.youtube.com/channel/UCXYQcMpUBT3aaQKfmAVJNow
Hans Jacob's games: https://github.com/hans61/Minimal64
FEATURES
● Only 61 74HCxx logic ICs, 2x 6C1008 SRAM, 4x 39SF0x0 FLASH, NO MICROCONTROLLER!
● Textbook 'Von-Neumann' architecture, 8-bit data bus, 16-bit address bus, 24 control signals
● 64KB RAM, 512KB FLASH SSD with file system (format, load, save, dir, delete)
● Monochrome VGA output 400 x 240 pixels, PS/2, expansion slot and serial UART port
● 8MHz CPU clockrate, 1.85Mips - that's 4x the processing power of a Commodore C64
● 256 instructions including conditional branching, subroutines, stack, word, long and zero-page operations
● 2 data registers A & B, ALU supporting ADD, SUBTRACT, AND, OR with 3 flags (negative, carry and zero)
● Full native tool-chain: MinOS, text editor, assembler, fast Python-like interpreter 'MIN'
● Cycle-exact emulator, cross-assembler (Windows) and classic games (TETRIS clone, Space Invaders clone)
Have fun!
See "CHANGE LOG" for a brief summary of the relevant updates.
Do you like this project and want to give something back? https://www.paypal.me/carstenherting