MUX
About the MUX PCB
MUX is an open source PCB design by TheJustMoose, published on GitHub. It is a 2-layer board measuring 152.4 × 152.4 mm, with 38 components from 7 distinct parts.
Other key parts include the 74LS151. By type, the board carries 21 connectors, 8 ICs, 8 capacitors 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!
Main components on the MUX
MUX bill of materials (BOM)
38 components, 7 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 8 | 74LS151 | DIP-16_W7.62mm_Socket | U1, U2, U3, U4, U5, U6, U7, U8 |
| 18 | Conn_01x08_Male | PinHeader_1x08_P2.54mm_Vertical | J1, J2, J3, J4, J5, J6, J7, J8 +10 |
| 1 | Screw_Terminal_01x02 | TerminalBlock_Phoenix_MKDS-1,5-2_1x02_P5.00mm_Horizontal | J9 |
| 1 | Conn_01x03_Male | PinHeader_1x03_P2.54mm_Vertical | J10 |
| 1 | Conn_01x01_Male | PinHeader_1x01_P2.54mm_Vertical | J20 |
| 8 | 0.1uF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C2, C3, C4, C5, C6, C7, C8 |
| 1 | 10k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1 |
MUX design files
The KiCad project lives in the TheJustMoose/74HCPU repository on GitHub; these links point at the commit this page was built from.
MUX: common questions
How big is the MUX PCB?
The MUX measures 152.4 × 152.4 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the MUX?
38 components, from 7 distinct parts. The full bill of materials is listed on this page.
Where can I download the MUX 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 MUX 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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