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Text of the page (random words):
welcome welcome by modular circuits welcome articles the anachronistic computer project introduction unic the universal ic introduction tales from the lab regulation the t80 bringup t80 bring up part 2 shadow tracer the road to perfection the mother of all priority inversions the last mile z80 complete the disintegrated machine introduction the instruction set the micro architecture gates from transistors registers alu ferrite core memory sense amplifier line drivers current sources inhibit drivers line drivers redux memory control logic rom tape interface rom second pass sense amplifier revisited reality check rom third pass tape read amplifier power supplies more power linear regulators reset and clock modules protected mode real time clock video display the cray files introduction prelude a new hope the hunt for the red bootcode the return of the cray the matrix needle in the hay stack a brave new world multiple platforms jobs parallels turbo a brave new cos world downloads the return of the cray files introduction a bridge too far that obscure object of desire exploring the cd a new simulator part 1 a new simulator part 2 a new simulator part 3 the unicos file system oldies but goldies a debug session to ssh and beyond the attack of cc dinosaurs the dinosaur computer strolls in the orchard halloween edition another dinosaur how did i get to own a pcw8256 remote controlling a pcw enterprise 128 a blast from the past can the z80 run a full os h bridge secrets introduction h bridges the basics sign magnitude drive lock anti phase drive asynchronous sign magnitude drive mosfets and catch diodes h bridge drivers h bridge control safety features bridge to the far side introduction motor modeling modeling mechanical systems how to read motor datasheets development tools logic probe parallel port jtag programmer parallel port jtag programmer 2 usb port jtag programmer a jtag programmer how not to engineering the h storm project introduction hcat91 hcpci hpcs8900 hsstartup μmodules introduction μm h bridge μm servo 32 μm servo brain on function call inlining all hail pcbway pcbway is becoming a teenager licenses contact new articles z80 protected mode i got nerd sniped and i couldn t get the idea out of my head so i had to flush it out is it possible to run a full fledged os on a z80 processor you know memory protection process isolation privilege levels the whole nine yards or well 7 5 the minimum necessary of course the z80 alone would not be able to do this but with a little help from the outside as it turns out it can if you are interested in such an academic i e pointless topic you can read the rest of the story here can the z80 run a full os welcome welcome to the re designed modular circuits site i ve been maintaining this site under worldpress for more then a decade but that content management system felt confined it has great plug in support it has many features theming support etc but it keeps all my data hostage it doesn t allow automation in any way i know how to deal with i m not a web developer it supports history and version checking but again not in a form that s convenient for me to use so i moved on i converted all the old content into markdown format and from now on or at least for a while i m going to use that and a pile of python scripts to manage the website version management is provided by a git repo editing can be done in any text editor off line and publication can be automated within gitea the private github clone this of course doesn t concern you dear reader it s just a peek behind the curtain probably boring as hell what does concern you is that the structure of the site changed as well if you happen to have saved bookmarks or links to pages here those almost certainly won t work anymore it also means that commenting at least for now is disabled this might sound like a big downgrade and it is but frankly i would have had to disable that feature anyway ai manages to get passed all my spam filters and i don t have the time or the desire to deal with that if you have ideas on a commenting system that is ai proof let me know of course i still value your feedback so please use the contact page and e mail for now 2026 modular circuits