Zx2022
About the Zx2022 PCB
Zx2022 is an open source PCB design by michalin, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 100 × 100 mm, with 34 components from 18 distinct parts.
Other key parts include the Z80CPU, 628128, 28C256_PLC32, Z80DART and 74LS02. By type, the board carries 12 resistors, 9 ICs, 6 connectors, 5 capacitors, 1 crystal and 1 switch.
It belongs with the retro computing and keyboards designs in this gallery.
From the project
Another DIY Z80 Computer With CP/M
The folder CPM/serdisk contains the CP/M programs in up to 16 user folders numbered from 0 to 15. If any of these files have changed, click the "Reload" Button to apply the changes. To access the files from CP/M, type B, followed by the user number 1-15 and a colon. For example B5: gives access to the files under CPM/serdisk/5
The TMS9918 can only display 40 columns, while terminals display 80 columns. This CP/M version is built for 80 columns, but it can be changed to 40 columns. To do this, open the file gencpm.dat, change the constant PAGWID to 28 (Which is 40 in hex) and rebuild the CP/M…
Main components on the Zx2022
Zx2022 bill of materials (BOM)
34 components, 18 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | Z80CPU | DIP-40_W15.24mm_Socket | U1 |
| 1 | 628128 | DIP-32_W15.24mm_Socket | U2 |
| 1 | 28C256_PLC32 | PLCC-32_THT-Socket | U3 |
| 1 | Z80DART | DIP-40_W15.24mm_Socket | U4 |
| 3 | 74LS02 | DIP-14_W7.62mm_Socket | U5, U7, U8 |
| 1 | 74LS00 | DIP-14_W7.62mm_Socket | U6 |
| 1 | 74LS138 | DIP-16_W7.62mm_Socket | U9 |
| 1 | OSC 4MHZ | Oscillator_DIP-14 | X1 |
| 1 | Bus | PinHeader_2x32_P2.54mm_Vertical | J2 |
| 1 | Terminal | PinSocket_1x06_P2.54mm_Vertical | J3 |
| 1 | Ser. Disk | PinSocket_1x06_P2.54mm_Vertical | J4 |
| 1 | PATA | BoxConn_2x20_P2.54mm_Horizontal | J5 |
| 1 | Power | PinHeader_1x02_P2.54mm_Horizontal | J6 |
| 1 | PS/2 Keyoard | PinHeader_1x04_P2.54mm_Horizontal | J7 |
| 1 | Reset | SW_PUSH_6mm | SW1 |
| 4 | 100n | C_Disc_D5.0mm_W2.5mm_P2.50mm | C1, C2, C3, C4 |
| 1 | 10µ | CP_Radial_D5.0mm_P2.50mm | C5 |
| 12 | 10k | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1, R2, R3, R4, R5, R6, R7, R8 +4 |
Zx2022 design files
The KiCad project lives in the michalin/ZX2022 repository on GitHub; these links point at the commit this page was built from.
Zx2022: common questions
How big is the Zx2022 PCB?
The Zx2022 measures 100 × 100 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Zx2022?
34 components, from 18 distinct parts. The full bill of materials is listed on this page.
Where can I download the Zx2022 design files?
From the michalin/ZX2022 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Zx2022 design in my own project?
Yes, under the terms of its GPL-3.0 license, which michalin chose for the repository.
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