VGA Graphics Card in 74xx Common sense

Feeling nostalgic we presume, [Glen Kleinschmidt] got down to construct a (*3*)640x480x64 VGA controller card from discrete good judgment chips. If we forget about the 512Kx8 Cypress SRAM video reminiscence, he succeeds, too — and on an overly readable, (*2*)unmarried web page A3 schematic. The function is to interface a few of his older 8-bit machines, just like the TRS-80 Style 1 and the BBC Micro, however for now he’s operating a demo the usage of a 20+ yr outdated PIC16F877 micro.

analog pc “bouncing ball” mission we lined again in 2021. Have you ever struggled with the construct vs. purchase resolution, and the way do making a decision?

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