OPD: Computer One floppy interface recreation.

[stephen_usher]

The new PCBs are at last ready to ship but probably missed today's batch. So, very little chance of them arriving by the weekend.

[stephen_usher]

Looks like the new PCBs will be arriving today after all as they're out for delivery. They arrived at Heathrow from China at ~6am this morning.

So, I will probably have time to test one either tomorrow evening or Sunday.

[stephen_usher]

And it's arrived!

[NormanDunbar]

I know it's just the photo, but it looks like someone has gone to a lot of trouble, to fill in all the through holes with solder!

Nice board.


Cheers,
Norm.

[stephen_usher]

I notice that I missed moving one chip designation from the fab layer to the front silkscreen... It's only a 74LS06 anyway.

[stephen_usher]

I know it's just the photo, but it looks like someone has gone to a lot of trouble, to fill in all the through holes with solder!

Hehe. Yeah, that's caused by the table being white melamine and showing through the holes.

[stephen_usher]

The old and new boards side by side:

I fitted the connector just to check that I'd got at least the VCC and GND correct on the interface. I'm a bit paranoid about that.

[Derek_Stewart]

Hi

Great looks PCB, I have not got a OPD, and the prices on Ebay and silly, so I would have to make a OPD.

I there a OPD service manual or schematic?

[KINGCHEF]

Hi

You could try here

https://fsck.technology/documentation/I ... er%20Desk/

David

[stephen_usher]

Thanks... but I have that on CDROM and it has every other page missing in parts and whole sections missing in others.