Search found 34 matches
- Tue Jun 22, 2021 11:35 am
- Forum: Hardware
- Topic: MZ-80b FI/O to HxC Cable
- Replies: 64
- Views: 35907
Re: MZ-80b FI/O to HxC Cable
@dat-alex - looking good, what package are you using, Quartus II schematic capture? I havent studied the differences between the 1772/1773 but I should image it wont take much effort to update the 1772 design. I will take a look soon as Im currently porting my Sharp MZ Series emulator to a Cyclone ...
- Wed Jun 02, 2021 6:42 am
- Forum: Hardware
- Topic: MZ-80b FI/O to HxC Cable
- Replies: 64
- Views: 35907
Re: MZ-80b FI/O to HxC Cable
This is just a test of the GAL (to replace the PAL) in the original board. The new boards are almost the same (different routing and copper fills) so I dont expect any gotcha's, made several tests to verify the hand drawn schematic against the physical card. Just waiting for the parts to arrive, ho...
- Fri May 28, 2021 7:27 am
- Forum: Hardware
- Topic: MZ-80b FI/O to HxC Cable
- Replies: 64
- Views: 35907
Re: MZ-80b FI/O to HxC Cable
@psmart: !!Excellent work!! (You catch me up with FDC800 replica pcb I was working in the same approach ,too!) Started designing the pcb but I decided to replace digital logic with CPLD and keep only WD1773 and inverter. I hope to manage to run CP/M on my beloved 80b soon! Maybe future approach woul...
- Thu May 27, 2021 4:24 am
- Forum: Hardware
- Topic: MZ-80B project (Floppy Disk I/O Card cloning!)
- Replies: 23
- Views: 21375
Re: MZ-80B project (Floppy Disk I/O Card cloning!)
good morning . This was exactly the same board tha inspired me of a more simpe 80B FD Controller card (as you can see in previous posts) -going one step further trying to implement digital logic in CPLD for a simpler board. (still in progress). The only thing to try is if it working with 80b but I c...
- Sun Mar 07, 2021 9:59 pm
- Forum: Hardware
- Topic: MZ-80B project (Floppy Disk I/O Card cloning!)
- Replies: 23
- Views: 21375
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.
- Thu Feb 25, 2021 9:08 am
- Forum: Hardware
- Topic: MZ-80B project (Floppy Disk I/O Card cloning!)
- Replies: 23
- Views: 21375
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) FDC800_origin.jpg and re-designed it using XC9536 for digital part and original WD1773 FDD chip FDC800_CPLD.jpg my 1773 chip just arrived ye...
- Wed Feb 24, 2021 10:13 am
- Forum: Buy/sell
- Topic: WTB: MZ80B FDD controller card
- Replies: 5
- Views: 6106
Re: WTB: MZ80B FDD controller card
I want an FDD card so I can run CP/M on my 80b.
- Thu Feb 18, 2021 7:32 pm
- Forum: Hardware
- Topic: MZ-80B project (Floppy Disk I/O Card cloning!)
- Replies: 23
- Views: 21375
Re: MZ-80B project (Floppy Disk I/O Card cloning!)
Thank you for A3 scan S_U_C, Have a nice evening
- Fri Jan 01, 2021 2:21 pm
- Forum: Buy/sell
- Topic: WTB: MZ80B FDD controller card
- Replies: 5
- Views: 6106
WTB: MZ80B FDD controller card
Hi! Iam interested in Sharp Sharp MZ80b-FI any compatible card that works with my SHARP MZ80B in order to read CP/M disks
Thank you for your time
Alex
Thank you for your time
Alex
- Fri Jan 01, 2021 2:05 pm
- Forum: Hardware
- Topic: MZ-80B project (Floppy Disk I/O Card cloning!)
- Replies: 23
- Views: 21375
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?