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  • Gigatron – TTL microcomputer
    This TTL computer looks like an interesting design:

    - It implements an 8-bit RISC CPU with an 8-instruction CPU using a surprisingly small number of chips: just 36 standard TTL chips, a ROM, and an SRAM chip.

    - The VGA output is generated entirely in software with no additional graphics hardware (other than a resistor DAC). User code runs only during the hsync and vsync periods.

    - The ROM kernel takes care of all the VGA timing and runs a virtual machine which presents itself as a 16-bit CPU and includes an interpreter so programs can be written in a high level language.
    Tue 26 Mar 2019 08:44:34 AM MDT - permalink -
    QRCode
    - archive.org - https://gigatron.io/
    electronics
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