Resources Wiki8bs.combeebmaster.co.ukAcorn BBC and Master Series ComputersChris Acornsoldcomputer.infoBBC Mecca Internals Motherboard The electrolytic capacitors are of terrible quality and need immediate replacement. Keyboard Key Mechanism The key…… Read more “BBC Master Compact”
Category: A-N
Groups starting with A to N
Compaq Portable
Resources WikiOperations GuideROMs and ROM guideold-computers.com Service manual, including schematics, is not available for free, it can be purchased from SAMS Technical Publishing. Internals Motherboard The motherboard…… Read more “Compaq Portable”
Hewlett-Packard 7470A Plotter
Resources WikiOperator’s ManualInterfacing and Programming ManualHP Museum Please check out HP 85B computer and HP 9121 floppy disk drive. https://www.youtube.com/watch?v=s-y-EMtx1-Q Internals Panel Base Transformer and Motors Control…… Read more “Hewlett-Packard 7470A Plotter”
Hewlett-Packard 9121 FDD
Resources HP Museum (plus documentation) Please also see a page about Hewlett-Packard 85B which works with this floppy. Service manual contains a great instruction how to perform…… Read more “Hewlett-Packard 9121 FDD”
Hewlett-Packard 85B
Resources Wikiseries80.org (documentation, programs, ROMs)HP Museum (documentation) Please also see Hewlett-Packard 9121 FDD for this computer. Internals Motherboard CRT Complex CRT Analog Board CRT Keyboard Expansion Board…… Read more “Hewlett-Packard 85B”
Old Crap Vintage Computing 