Zx2 mem
About the Zx2 mem PCB
Zx2 mem is an open source PCB design by krzys9876, published on GitHub under the MIT license. It is a 2-layer board measuring 101 × 69.9 mm, with 20 components from 13 distinct parts.
Other key parts include the 74LS32, 28C256, 74HC04 and AS6C1008-55PCN. By type, the board carries 6 connectors, 6 capacitors, 5 ICs and 3 resistors.
It belongs with the test & measurement designs in this gallery.
From the project
KiCad projects (schematics and boards) for a full-diy ZX Spectrum replica
All boards that I designed, etched and soldered to create a full-diy replica of ZX Spectrum. Kicad4 (just a keyboard) and Kicad5
This is NOT a cycle-perfect replica so do not expect to launch fancy demos on it. The project started as a breadboard simplest possible computer using Z80. Quite quickly I started thinking of making a replica of ZX Spectrum - the first computer I ever used as a kid. All I wanted was to:
Main components on the Zx2 mem
Zx2 mem bill of materials (BOM)
20 components, 13 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | 74LS32 | DIP-14_W7.62mm | U1, U5 |
| 1 | 28C256 | DIP-28_W15.24mm | U2 |
| 1 | 74HC04 | DIP-14_W7.62mm | U3 |
| 1 | AS6C1008-55PCN | DIP-32_W15.24mm | U4 |
| 1 | Conn_01x32 | PinHeader_1x32_P2.54mm_Horizontal | J1 |
| 1 | A13_DECODER | PinHeader_2x02_P2.54mm_Vertical | J2 |
| 1 | A14_DECODER | PinHeader_2x02_P2.54mm_Vertical | J3 |
| 1 | A13_ROM | PinHeader_2x03_P2.54mm_Vertical | J4 |
| 1 | A14_ROM | PinHeader_2x03_P2.54mm_Vertical | J5 |
| 1 | A16 | PinHeader_1x02_P2.54mm_Vertical | J6 |
| 1 | CP | C_1210_3225Metric | C1 |
| 5 | 100n | C_1206_3216Metric | C2, C3, C4, C5, C6 |
| 3 | R | R_0805_2012Metric | R1, R2, R3 |
Zx2 mem design files
The KiCad project lives in the krzys9876/ZX_Spectrum_diy repository on GitHub; these links point at the commit this page was built from.
Zx2 mem: common questions
How big is the Zx2 mem PCB?
The Zx2 mem measures 101 × 69.9 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Zx2 mem?
20 components, from 13 distinct parts. The full bill of materials is listed on this page.
Where can I download the Zx2 mem design files?
From the krzys9876/ZX_Spectrum_diy repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Zx2 mem design in my own project?
Yes, under the terms of its MIT license, which krzys9876 chose for the repository.
More boards in ZX_Spectrum_diy
Z2 io test01
100.5 × 91.1 mm67 parts2LMIT2
Z2 io
104.8 × 101 mm65 parts2LMIT2
Z2 io test02
104.8 × 101 mm65 parts2LMIT2
Keyb2 nofill
177.2 × 103.8 mm59 parts2LMIT2
Keyb2
177.2 × 103.8 mm59 parts2LMIT2
Zx2 clock
53.3 × 63.5 mm24 parts2LMIT2
Zx2 cpu test01
87.1 × 67.5 mm18 parts2LMIT2
Zx2 cpu
100.3 × 71.1 mm18 parts2LMIT2
Zx2 fpga int
86.4 × 52.1 mm13 parts2LMIT2
Zx2 backplane
152.4 × 116.8 mm12 parts2LMIT2
Zx2 keyb conn
96.5 × 39.4 mm10 parts2LMIT2
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