HardLabs

C128dcr-DolphinDOS3

ytmytm·c128dcr-DolphinDOS3·dolphindos3-kicad/dolphindos3-kicad.kicad_pcb

C128dcr-DolphinDOS3 PCB layout, top view — open source board by ytmytm
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About the C128dcr-DolphinDOS3 PCB

C128dcr-DolphinDOS3 is an open source PCB design by ytmytm, published on GitHub. It is a 2-layer board measuring 97.8 × 84.5 mm, with 31 components from 14 distinct parts.

Other key parts include the 6502, 27256, 6264, 6821 and 74LS08. By type, the board carries 10 ICs, 9 capacitors, 5 jumpers, 4 resistors and 3 connectors.

It belongs with the retro computing designs in this gallery.

From the project

DolphinDOS 3 board for (but not only) C128DCR internal 1571

This project recreates work done on DolphinDOS 3 by SilverDream! in KiCad with some adjustments for C128DCR. Go there for a lot of information about DolphinDOS.

The goal was to get rid of 40-wire ribbon cable between daughterboard and IDC to IC adapter and plug the board directly into C128DCR mainboard into U101 (6502 CPU) footprint.

With a ribbon cable extension the same board can be still used with 1571 from C128D or standalone 1571 or installed in 1541/1541-II.

C128dcr-DolphinDOS3, from the project README
From the project README

Main components on the C128dcr-DolphinDOS3

6502272566264682174LS0874LS3274LS04

C128dcr-DolphinDOS3 bill of materials (BOM)

31 components, 14 distinct parts.

QtyPartRefs
1
6502
IC1
1
27256
IC2
1
6264
IC3
1
6821
IC4
3
74LS08
IC5, IC6, IC10
2
74LS32
IC7, IC9
1
74LS04
IC8
1
MB_CPU
CN1
1
parallel0
CN2
1
MB_CPU_PINS
CN3
3
Conn_01x02
JP1, JP2, JP3
2
Jumper_2_Open
JP4, JP5
9
0.1uF
C2, C3, C4, C5, C6, C7, C8, C9 +1
4
10K
R1, R2, R3, R4

C128dcr-DolphinDOS3 design files

The KiCad project lives in the ytmytm/c128dcr-DolphinDOS3 repository on GitHub; these links point at the commit this page was built from.

C128dcr-DolphinDOS3: common questions

How big is the C128dcr-DolphinDOS3 PCB?

The C128dcr-DolphinDOS3 measures 97.8 × 84.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the C128dcr-DolphinDOS3?

31 components, from 14 distinct parts. The full bill of materials is listed on this page.

Where can I download the C128dcr-DolphinDOS3 design files?

From the ytmytm/c128dcr-DolphinDOS3 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the C128dcr-DolphinDOS3 design in my own project?

The repository has no license, so all rights stay with ytmytm. Use it as a reference, and ask the author before reusing the design.

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