He tried to leave a comment but it was automatically removed by KZfaq 😒 You can find him in my discord server (link is in the description)

@@TheRetroChannel Yeah he got hold of me. I don't do discord, waste of time ;-)

@@TheRetroChannel Had a chat. You won't believe it, he lives only about 1km from me in the same suburb a couple of streets away lol!

Most of the 1571's are dead, either because the CIA chip is dead (and those are available NOS from Mouser), or because the read/write heads have failed open. It would be far better if someone could produce replica 1571 ready/write head assemblies.

@@glenndoiron9317 Given that the board and chips are almost 40 years old it is surprisingly reliable. How many LCD TV's from 2000 are still working now.... I'd say zero. The heads are the main issue. But there is another way to solve that problem. Only a handful of (forgetful) titles were released on double-sided disks so the 1571 isn't required.....

No. The chip uses DB0-7 and other pins too. I just reversed and re-created the 1571 board and I know for a fact that exactly 20 pins on the 6526 are used. I seriously doubt a partially working 6526 will work. Generally if the chip is bad then it will have other serious issues that affect everything not just a few pins. Anyway 6526 are not that hard to find now.

@@g4z-kb7ct By IO ports I'm talking about the PA[0:7] and PB[0:7] pins. I.E. Pins 2 thru 17. Of course the DB[0:7] pins are required, how else do you program the timers or write to the serial shift registers if you don't connect the data-bus?

@@pits645 You said exactly this... "You only need the Serial Shift Register, Interupt, and TimerA in your 1571 CIA". That is just plain WRONG. If you knew the DB0-7 pins are used you should have said so.... but you didn't lol! In reality you should not have commented at all because now you look dumb and are trying to recover this hole you dug for yourself by adding more info. A bad chip is a bad chip period and should not be used regardless of the fault it has. Next time just keep quiet to avoid the embarressment LOL!

@@pits645 lol if you knew db0-7 was used you should have said so. A bad chip is a bad chip and should not be used regardless. Next time just keep quiet to avoid embarressment lol

@@g4z-kb7ct Nice projection. You're probably the only one to read "IO ports" and assume someone is talking about the data-bus.

Danke!

Ah yeah true, probably a good idea if it was installing it permanently.

The ROMs used for the 128D drive and the 1571 are identical.

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if you own a real and working c65 you are one of about maybe 3 people. Meaning no one knows anything or has any experience with it except those 3 people and highly likely 2 of them are not watching this vid or reading your comment ;-) One way could be to change the device number on the internal drive using the usual solder blob jumpers (or software commands) to device 9 and then use the sd2iec as device 8. Another way is use the sd2iec as device 9.

I'd still suspect the CIA. Does the keyboard work at all, or does it show a cursor in 64 mode? You could always disconnect the IEC cable going to the floppy controller board to disable it (assuming it is not the DCR version)

​@@TheRetroChannel if I remember well the keyboard worked in 64 mode ...but I didn't try any floppy with it because I would like to clean the drive before, so now I will try to disconnect the floppy, mine is not a DCR..thank you for now

don't worry I re-made a new c128 style internal 1571 board.