Print Page - DDI-1 PCB drawing/photo's

Title: DDI-1 PCB drawing/photo's
Post by: retro space on 09:10, 04 July 24

I was wondering how the CPC interfaces with a floppy, and if it is hard to build a controller. I've a spare µPD765AC lying around.
I see the schematic here:
https://www.cpcwiki.eu/index.php/765_FDC
Does anybody know a source for the PCB layout, or photo's of it on both sides?

Title: Re: DDI-1 PCB drawing/photo's
Post by: Bryce on 12:18, 04 July 24

I assume you didn't go to the bother of checking or searching the threads in this forum for "DDI-1 Clone" ? Otherwise you would have found the many existing layouts, clones and upgraded clones that have been designed, discussed and sold here.

Bryce.

Title: Re: DDI-1 PCB drawing/photo's
Post by: retro space on 12:24, 04 July 24

I'm specifically interested in the original design, as I want to compare it to another Z80 floppy computer with a NEC µPD765

Title: Re: DDI-1 PCB drawing/photo's
Post by: eto on 21:57, 04 July 24

Quote from: retro space on 09:10, 04 July 24, or photo's of it on both sides?

https://www.cpcwiki.eu/index.php/Mainboard_Versions#DDI-1

Title: Re: DDI-1 PCB drawing/photo's
Post by: retro space on 05:26, 05 July 24

Quote from: eto on 21:57, 04 July 24
Quote from: retro space on 09:10, 04 July 24, or photo's of it on both sides?
https://www.cpcwiki.eu/index.php/Mainboard_Versions#DDI-1

Thanks,
Is the Zilog chip fully replacable by a NEC µPD765? What is the 40015? Is that a Z80 CTC/PIO in disguise?

Title: Re: DDI-1 PCB drawing/photo's
Post by: pelrun on 06:12, 05 July 24

Quote from: retro space on 05:26, 05 July 24What is the 40015?

It's just the AMSDOS rom. All amstrad-marked ic's are roms except for the gate array/asic.

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General Category => Technical support - Hardware related => Topic started by: retro space on 09:10, 04 July 24