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Indeed, Flappy and the assembler/debugger-disks were the only working ones. When looking more closely at the disks it's not hard to see why, most of the disks are heavily worn. I formatted the original BASIC disk and copied BASIC to it, but loading fails almost every time. Geir - who has bought the ...
My new MZ 800 comes with a QD and some disks. I know nothing about QD, and I found that most of the disks I got (including the original BASIC disk) are unreadable. How do I create a working BASIC disk? Somehow I must transfer the 800 QD BASIC to a real quickdisk, but how?
You are right, I have not noticed this before. The rate can probably be derived by looking at the assembler example in the manual, but yes, looking at the actual circuit would be easier :) Btw another approach would be to use a small microcontroller instead of the original circuit. The protocol appe...
I'm afraid I don't have any pictures of the interiors. Are you planning to build a replica? You probably know this already, but the schematics is available in the manual.
Looks like stock 821's go for around 150 euros on eBay. I have no idea what the QD is worth though. To me - not very much I'm afraid. Interesting technology but not very practical today. Where are you located?