MZ-80B project (Floppy Disk I/O Card cloning!)
Re: MZ-80B project (Floppy Disk I/O Card cloning!)
Any news regarding this?
Re: MZ-80B project (Floppy Disk I/O Card cloning!)
Hi my friend...
Still searching for a good candidate schematic to 'emulate' via fpga design.
Ia m thinking of implementig K & P FDC800 card
https://original.sharpmz.org/usedskdrives.htm
According to datasheet controller chip has the same mapping with original mz80b chip FDD controller
So why not?
Still searching for a good candidate schematic to 'emulate' via fpga design.
Ia m thinking of implementig K & P FDC800 card
https://original.sharpmz.org/usedskdrives.htm
According to datasheet controller chip has the same mapping with original mz80b chip FDD controller
So why not?
member of retroclub.gr (Thessaloniki , Greece)
Re: MZ-80B project (Floppy Disk I/O Card cloning!)
Hi I found a large A3 scan of the MZ-80A floppy disk card, this will work in the B if you dissable the CS/CE to the EPROM IC 3 PIN 8 to IC 5 PIN 1. add pull-up resister to IC 5 PIN 1
Re: MZ-80B project (Floppy Disk I/O Card cloning!)
Thank you for A3 scan S_U_C, Have a nice evening
member of retroclub.gr (Thessaloniki , Greece)
Re: MZ-80B project (Floppy Disk I/O Card cloning!)
Well after alot of searching around with no result I decided to give a try to the following (in progress) project:
I took the schematic (thanks to Martin8bity)
and re-designed it using XC9536 for digital part and original WD1773 FDD chip
my 1773 chip just arrived yesterday after a lot of wait. So I can give my project a try!
I will let you know with the results
I took the schematic (thanks to Martin8bity)
and re-designed it using XC9536 for digital part and original WD1773 FDD chip
my 1773 chip just arrived yesterday after a lot of wait. So I can give my project a try!
I will let you know with the results
member of retroclub.gr (Thessaloniki , Greece)
Re: MZ-80B project (Floppy Disk I/O Card cloning!)
That looks interesting. Keep us updated.
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Torfinn
Torfinn
Re: MZ-80B project (Floppy Disk I/O Card cloning!)
I agree, looks interesting.
Question. Do you have any relaible source of XC95xx parts? They are obsoleted for a while now, and ebay is a bit hit or miss as a chip source
Question. Do you have any relaible source of XC95xx parts? They are obsoleted for a while now, and ebay is a bit hit or miss as a chip source
Re: MZ-80B project (Floppy Disk I/O Card cloning!)
Yes I have 2 xc9536 5V from a reliable source already tested. The difficult thing is to property program these guys due a programming bug on the first chip batches.
For the moment (and due to Covid lock down) I designing a development pcb so I can verify the schematic design in real circuit.
For the moment (and due to Covid lock down) I designing a development pcb so I can verify the schematic design in real circuit.
member of retroclub.gr (Thessaloniki , Greece)
Re: MZ-80B project (Floppy Disk I/O Card cloning!)
This is probably the most exciting news for any 80b owner. I am dying to add a Gotek drive.
Re: MZ-80B project (Floppy Disk I/O Card cloning!)
Hmm, I wonder if the original chips are available?
And also, does anyone have the physical measuremnts and layout of the card?
And also, does anyone have the physical measuremnts and layout of the card?
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Torfinn
Torfinn