PDS ZXSpectrum
About the PDS ZXSpectrum PCB
PDS ZXSpectrum is an open source PCB design by diyelectromusic, published on GitHub under the MIT license. It is a 2-layer board measuring 73.7 × 70 mm, with 15 components from 12 distinct parts.
Other key parts include the Z8420 PIO, 74LS245 and 74LS04. By type, the board carries 3 ICs, 3 capacitors, 3 resistors, 2 jumpers, 2 switches and 1 connector.
It belongs with the usb & debug tools and retro computing designs in this gallery.
From the project
Design files for a remake of the PDS Programmers Development System
This contains the hardware design files for the ZX Spectrum interface card for the PDS. Based on the designs detailed here: https://www.cpcwiki.eu/index.php/PDSdevelopmentsystem
Please refer to the main repository readme for licensing, copyright, and limitations of use.
Z8420 Z80 PIO (NMOS is currently assumed given it has to work with a Z80A at 3.5MHz) 74LS245 octal bus transciever 74LS04 hex inverter Resistors: 1K, 4K7, 10K Capacitors: 3x 100nF 6x6x6mm tactile button switch SPDT slider switch 2.54mm pitch OR 2.54mm header pins and jumper 16-way 2x8 shrouded pin header socket * ZX Spectrum…
Main components on the PDS ZXSpectrum
PDS ZXSpectrum bill of materials (BOM)
15 components, 12 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | Z8420 PIO | DIP-40_W15.24mm_Socket | U1 |
| 1 | 74LS245 | DIP-20_W7.62mm_Socket | U2 |
| 1 | 74LS04 | DIP-14_W7.62mm_Socket | U3 |
| 1 | PDS_IFACE | IDC-Header_2x08_P2.54mm_Vertical | J2 |
| 2 | Link | PinHeader_1x02_P2.54mm_Jumpered | JP1, JP2 |
| 1 | RESET | SW_PUSH_6mm | SW1 |
| 1 | ENABLE | PinHeader_1x03_P2.54mm_Vertical | SW2 |
| 1 | ZXBUS | ZX_EDGE_90 | Z1 |
| 3 | .1u | C_Disc_D4.3mm_W1.9mm_P5.00mm | C1, C2, C3 |
| 1 | 10K | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1 |
| 1 | 1K | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R2 |
| 1 | 4K7 | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R3 |
PDS ZXSpectrum design files
The KiCad project lives in the diyelectromusic/PDS_Remake repository on GitHub; these links point at the commit this page was built from.
PDS ZXSpectrum: common questions
How big is the PDS ZXSpectrum PCB?
The PDS ZXSpectrum measures 73.7 × 70 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the PDS ZXSpectrum?
15 components, from 12 distinct parts. The full bill of materials is listed on this page.
Where can I download the PDS ZXSpectrum design files?
From the diyelectromusic/PDS_Remake repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the PDS ZXSpectrum design in my own project?
Yes, under the terms of its MIT license, which diyelectromusic chose for the repository.
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