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AND

TheJustMoose·74HCPU·Trash/AND/AND.kicad_pcb

AND PCB layout, top view — open source board by TheJustMoose

About the AND PCB

AND is an open source PCB design by TheJustMoose, published on GitHub. It is a 2-layer board measuring 81.3 × 31.8 mm, with 10 components from 7 distinct parts.

Other key parts include the 74LS573 and 74LS08. By type, the board carries 4 connectors, 3 ICs, 1 diode, 1 capacitor and 1 resistor.

From the project

Handmade CPU. See README.md

Not a very scary instruction set discrete logic processor.

8 bit data 16 bit address / 64KB RAM 17 bit address (in V register) / 128KW Dual Bank Video RAM 16 instructions 8 data registers and 4 pointer registers in 2 banks 1 flags register in IO port 32 input ports and 32 output ports (You can write a constant to the first 8 ports. Only registers can be written to the remaining ports.) Assembled from 74HCxx series ICs!

AND, from the project README
From the project README

Main components on the AND

74LS57374LS08

AND bill of materials (BOM)

10 components, 7 distinct parts.

QtyPartRefs
1
74LS573
U1
2
74LS08
U2, U3
3
Conn_01x08_Male
J1, J2, J3
1
Conn_01x04_Male
J4
1
LED
D1
1
0.1uF
C1
1
1k
R1

AND design files

The KiCad project lives in the TheJustMoose/74HCPU repository on GitHub; these links point at the commit this page was built from.

AND: common questions

How big is the AND PCB?

The AND measures 81.3 × 31.8 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the AND?

10 components, from 7 distinct parts. The full bill of materials is listed on this page.

Where can I download the AND design files?

From the TheJustMoose/74HCPU repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the AND design in my own project?

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

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