HiI have buyes an Apple II+ clone, done some work on to put it alive again.Now it boot , read floppy etc, seem ok, but the keyboard don't work at all....As you can see, the ribbon is very damaged....
Keyboard is a keytronicSomeone got some wiring diagrams or can help ?CheersLaurent, france
I think you probably need to start from scratch and make a new cable. That looks like a mess. Unfortunately I don't know where to get a pinout of that keyboard. If nobody knows, you may have to reverse engineer it. You can probably trace down which pins are power and ground from the chips on the PCB. Then you'll have to figure out what pins the data and strobe signals are on. A logic analyzer may help, but if you can find a datasheet for the encoder chip you may be able to trace back those signals to it also.
HiYes, but where find some documentations..... seem weirdCheersLaurent
Is it a commercial Apple II+ clone or a home-made computer in a wooden case? If it's the former, it would be helpful if you provide more information about it: make, model, pictures of the case, motherboard and any markings on it.
Also all Keytronic keyboards have the model number on the PCB and a stamp or a sticker with the manufacturing date. Can you provide a picture of it?
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Interesting motherboard.
No onboard ROM, I guess you'd need to have that on a card in slot 0.
Also, I suppose that the missing CPU socket is for a Z80, which would delete the presence of Slot-4.
Neat.
HiYes ROMs are onboard in the Slot 0Yes the free socket is labled Z80, i'll put it on one soonCheersLaurent
That's an interesting motherboard. Fairly late variety. Slot 4 is missing because that's the Z80 on the motherboard. Slot 0 as mentioned for the ROM card, the motherboard has 64k using 64kx1 DRAMs like a //e so no need for a 16k RAM card in slot 0 like a ][+. Motherboards like that were sold under a number of different brand names. Importers in different countries would either sell them as parts through usually magazine ads, or they assembled complete systems to sell. One of the reasons for the ROM being on a separate card is it made it easer to get past US customs because by that time Apple was actively trying to get import of clones shut down. Importers would install the ROM cards later. Sometimes they used modified ROMs, other times they just copied Apple's directly. Unlike a few clone vendors like VTech that licensed BASIC from MS, most of these others were definitely Copyright violations.