ITXPlus: A ITX Sized Macintosh Plus Logicboard Reproduction
Published on: 2025-06-27 23:52:30
I haven't done project thread in a while as writing is not my favourite past time but people seem to enjoy them so here it goesITXPlus is a Mini-ITX sized Macintosh Plus logicboard clone that can be be assembled to a working state with no original parts and is intended for new build systems in modern casesITXPlus features a onboard VGA output using GuruThree's Pico based video converter, power from standard 24pin ATX power supply, a onboard 50pin internal scsi header and 4MB of solderd RAMITXPlus also makes used of DosFox's discreet replacement for the Sony Sound IC and my implementation of his SCHWIM IWM bypass in a PLD as well as pgreenland / quortan's ATTiny based RTC replacement and Porchy / Hkz / Bolle's reverse engineerings of the Macintosh Plus PAL's(I hope I haven't forgotten to mention anyone's elses work I have used....)As it is designed to use a SCHWIM based IWM bypass it will not support floppy drives out of the box however a expansion heder is provided with all the signals
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