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CPC-DDI20

Bread80·CPCModular·DDI20/CPC-DDI20.kicad_pcb

CPC-DDI20 PCB layout, top view — open source board by Bread80

About the CPC-DDI20 PCB

CPC-DDI20 is an open source PCB design by Bread80, published on GitHub under the CERN-OHL-P-2.0 license. It is a 2-layer board measuring 99.1 × 65.9 mm, with 38 components from 24 distinct parts.

Other key parts include the UPD765AC, FDC9229, 74LS04, 74LS08 and 74LS38. By type, the board carries 12 resistors, 10 ICs, 9 capacitors, 3 connectors, 2 transistors and 1 switch.

It belongs with the retro computing designs in this gallery.

From the project

Modular Amstrad CPC Compatible Computer (WiP)

***This project is an unfinished work in progress. It currently has bugs and not all the features have been tested!

The current modules are designed to fit a slightly modified RC2014 Pro backplane. In the text below I shall explain the current status of the project, workarounds needed to get it running and basic build details. Due to the work in progress status of the project this document will be intentionaly terse.

CPC-DDI20, from the project README
From the project README

Main components on the CPC-DDI20

UPD765ACFDC922974LS0474LS0874LS3874LS3274LS8674LS13274LS74

CPC-DDI20 bill of materials (BOM)

38 components, 24 distinct parts.

QtyPartRefs
1
UPD765AC
IC201
1
FDC9229
IC202
1
74LS04
IC203
1
74LS08
IC205
2
74LS38
IC206, IC208
1
74LS32
IC207
1
74LS86
IC209
1
74LS132
IC210
1
74LS74
IC212
2
2SC1815
Q101, Q102
1
MX4 Connector
J2
1
Channel 1
J3
1
Channel 2
J4
1
680R
NR201-6
1
ABBA
SW1
8
0.1nF
C1, C2, C3, C4, C5, C6, C7, C8
1
47p (NPO)
C102
1
680R
R107
4
1k
R109, R110, R113, R212
1
10k
R117
Show 4 more
QtyPartRefs
1
160R
R118
2
560R
R119, R121
2
2K2
R120, R214
1
680
RN201

CPC-DDI20 design files

The KiCad project lives in the Bread80/CPCModular repository on GitHub; these links point at the commit this page was built from.

CPC-DDI20: common questions

How big is the CPC-DDI20 PCB?

The CPC-DDI20 measures 99.1 × 65.9 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the CPC-DDI20?

38 components, from 24 distinct parts. The full bill of materials is listed on this page.

Where can I download the CPC-DDI20 design files?

From the Bread80/CPCModular repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the CPC-DDI20 design in my own project?

Yes, under the terms of its CERN-OHL-P-2.0 license, which Bread80 chose for the repository.

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