per's latest activity

It can be mentioned that in Scandinavia we use the Schuko connector, which does not enforce any particular side to be neutral/live...

Yes, I used that disk as-is to begin with, but it requires special code at 400h-800h and some additional code on the 9E00h page (in...

Nice to hear it could be of help! There's just so much diversity among the early micros that are lost because nobody kept stuff in use...

I was able to use the original system files for FDOS-III found on the ISIS 8” disk to recreate bootable 5.25” disks that can run on an...

Yeah, that will illustrate things pretty well. This thread has some examples of what you can typically expect to see when things are...

I am fairly certain generating the TG43 signal is handled by the SCSI to 8" floppy interface and not the drive itself in the case. But...

Sorry, my bad. I see there's something connected to that pin in the drive now, but the NEC-PC 8881 manual doesn't list it.

There can be lots of smaller details.. From what I have seen: FD1165-A: No door-lock solenoid (can be retrofitted) 25x2-pin flatcable...

Using directly on an old PC will probably be difficult, since this one can't be jumpered for "Disk Change". You get index-pulses all the...

Your FD1165A looks identical to my FD1165A from 10 years before, except for mine not having the front panel. I did briefely scribble...

For reference, if anyone else needs this info, what I mean by "ordinary 5-bit per nibble GCR", is to the point the GCR scheme described...

...and data! Did add it as a modulation type to Eric Smith's flux decoder tool, which he wrote in Python. Not the fastest thing around...

Tried to do some manual decoding from the timing-states, and yeah.. Seems like this is the ordinary 5-bit per nibble GCR. Seems like...

just stumbled upon this.. the cp/m 2.2 sources for the 2300 ! https://github.com/t52ta6ek/2300ADS-CPM

hopefully you will be able to recover the floppies I went through all of my boards, and I have a z80 2300 system board with a 2.1 boot...