snuci
Veteran Member
I've had multiple people ask me for pictures of the Nabu PC floppy disk controller (FDC) board so that reproductions can be made. I was a little hesitant to let too many people have pictures because for one, I cannot get mine to work yet and two, there would be duplication of work. I have been convinced that it's best just to put the pictures out there and hope someone can reproduce this board (actually two boards) for the community of new Nabu PC owners.
This is a thread to have any hobbiest discuss this here so we can all learn from questions and answers and maybe get some assistance from others to help figure out why my floppy disk controller doesn't work. It's actually not too complicated but there is a couple of things to note:
1. Any NABU PC can utilise this board set but it needs a modification to the motherboard to allow for the 8K Rev B FDC EPROM to work as opposed to the 4K Rev A EPROM that does not have the FDC functionality.
2. I have posted my Rev B FD firmware.
3. I did my best at the pictures. If you need any further details, please ask here so that everuone can benefit from the answers.
4. If you want to test this out, I would be happy to try a board to see if it acts the same way as my original board and I would appreciate a copy of the board when completed, if possible.
The pictures and information are posted here: https://vintagecomputer.ca/nabu-pc-fdc/
Disk images and firmware are located here: https://vintagecomputer.ca/files/Nabu/ Note: Thanks to Dave Dunfield for the images. I put a copy here
Please ask any questions here and if you do decide to tackle this reproduction, please post here to let evryone know who is working on it. I would like to try to avoid duplication of work but I realize this is a hobby and people may want to do the reproduction on their own. Let's hope this work can benefit all new Nabu PC owners.
P.S. If you have a working Nabu PC with a working floppy drive, please contact me.
This is a thread to have any hobbiest discuss this here so we can all learn from questions and answers and maybe get some assistance from others to help figure out why my floppy disk controller doesn't work. It's actually not too complicated but there is a couple of things to note:
1. Any NABU PC can utilise this board set but it needs a modification to the motherboard to allow for the 8K Rev B FDC EPROM to work as opposed to the 4K Rev A EPROM that does not have the FDC functionality.
2. I have posted my Rev B FD firmware.
3. I did my best at the pictures. If you need any further details, please ask here so that everuone can benefit from the answers.
4. If you want to test this out, I would be happy to try a board to see if it acts the same way as my original board and I would appreciate a copy of the board when completed, if possible.
The pictures and information are posted here: https://vintagecomputer.ca/nabu-pc-fdc/
Disk images and firmware are located here: https://vintagecomputer.ca/files/Nabu/ Note: Thanks to Dave Dunfield for the images. I put a copy here
Please ask any questions here and if you do decide to tackle this reproduction, please post here to let evryone know who is working on it. I would like to try to avoid duplication of work but I realize this is a hobby and people may want to do the reproduction on their own. Let's hope this work can benefit all new Nabu PC owners.
P.S. If you have a working Nabu PC with a working floppy drive, please contact me.