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DDI-1 PCB drawing/photo's

Started by retro space, 09:10, 04 July 24

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retro space

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?
Teaching computer science on a high school with the CPC, P2000T, Spectrum and C64.

Bryce

#1
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. 

retro space

#2
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
Teaching computer science on a high school with the CPC, P2000T, Spectrum and C64.

eto

#3
21:57, 04 July 24

retro space

#4
Yesterday at 05:26
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?
Teaching computer science on a high school with the CPC, P2000T, Spectrum and C64.

pelrun

#5
Yesterday at 06:12
Quote from: retro space on Yesterday at 05:26What 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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