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Processor

Bread80·Datapoint2200·Processor/Processor.kicad_pcb

Processor PCB layout, top view — open source board by Bread80
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About the Processor PCB

Processor is an open source PCB design by Bread80, published on GitHub. It is a 2-layer board measuring 410.2 × 272.4 mm, with 417 components from 47 distinct parts.

Other key parts include the 74LS245 and 74HCT245. By type, the board carries 89 resistors, 85 LEDs, 57 capacitors, 7 ICs and 5 connectors.

It belongs with the retro computing designs in this gallery.

From the project

Datapoint 2200 Schematics and Documents

This is my project to transcribe the schematics for a Datapoint 2200 serial processor machine, reverse engineer them, and recreate the original hardware with added blinkenlights.

The repository contains schematics, PCB layout files, documents and software relevant to the 2200.

The schematics are in Kicad 5 format (at least until I make my peace with the UI in newer versions). To open them you may need to import the symbol library in Datapoint2200.lib and the Datapoint2200.pretty folder.

Processor, from the project README
From the project README

Main components on the Processor

74LS24574HCT245

Processor bill of materials (BOM)

417 components, 47 distinct parts.

QtyPartRefs
6
74LS245
U901, U902, U903, U904, U905, U906
1
74HCT245
U907
4
Conn_02x10_Top_Bottom
J11, J12, J13, J14
1
~WORD_SELECT
J901
1
Edge P5A Bottom
PAB5
1
Edge P5A Top
PAT5
1
Edge P5B Bottom
PBB5
1
Edge P5B Top
PBT5
45
470
RA0, RA1, RA2, RA3, RA4, RA5, RA6, RA7 +37
8
470
RH0, RH1, RH2, RH3, RH4, RH5, RH6, RH7
13
7404
Z1, Z7, Z30, Z44, Z49, Z56, Z72, Z73 +5
10
7403
Z2, Z22, Z29, Z35, Z57, Z60, Z89, Z92 +2
5
7420
Z3, Z4, Z16, Z19, Z38
9
7410
Z5, Z11, Z13, Z18, Z33, Z36, Z55, Z77 +1
4
7442
Z6, Z24, Z43, Z94
8
7402
Z8, Z23, Z28, Z41, Z47, Z51, Z53, Z75
4
7408
Z9, Z27, Z74, Z116
4
7430
Z10, Z25, Z45, Z76
12
7400
Z12, Z17, Z37, Z42, Z46, Z54, Z58, Z61 +4
3
7440
Z14, Z108, Z117
Show 27 more
QtyPartRefs
1
74151
Z15
9
74164
Z20, Z21, Z26, Z39, Z40, Z62, Z63, Z66 +1
8
7474
Z31, Z32, Z34, Z52, Z69, Z70, Z71, Z106
1
7405
Z48
1
7437
Z50
3
7406
Z59, Z104, Z105
7
74153
Z64, Z65, Z80, Z81, Z84, Z85, Z113
1
7473
Z87
2
7495
Z90, Z91
4
7489
Z95, Z96, Z97, Z98
6
74193
Z100, Z101, Z109, Z110, Z111, Z112
2
7485
Z114, Z115
85
LED
LA0, LA1, LA2, LA3, LA4, LA5, LA6, LA7 +77
28
0.1u 10V
C1, C3, C5, C8, C11, C13, C14, C21 +20
22
47u 6V
C2, C4, C6, C7, C9, C10, C12, C15 +14
2
.033uF 24V
C32, C35
1
22u 15V
C33
1
100p 1kV
C54
2
.001 1kV
C55, C56
1
470p 1kV
C57
13
470
R1, R2, R3, R4, R5, R6, R7, R8 +5
39
2k2
R9, R10, R11, R12, R13, R14, R15, R16 +31
1
4k7
R17
2
1k
R25, R66
1
220
R63
1
330
R64
32
470R
R901, R902, R903, R904, R905, R906, R907, R908 +24

Processor design files

The KiCad project lives in the Bread80/Datapoint2200 repository on GitHub; these links point at the commit this page was built from.

Processor: common questions

How big is the Processor PCB?

The Processor measures 410.2 × 272.4 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Processor?

417 components, from 47 distinct parts. The full bill of materials is listed on this page.

Where can I download the Processor design files?

From the Bread80/Datapoint2200 repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Processor design in my own project?

The repository has no license, so all rights stay with Bread80. Use it as a reference, and ask the author before reusing the design.

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