Z80PRINT
About the Z80PRINT PCB
Z80PRINT is an open source PCB design by lynchaj, published on GitHub. It is a 2-layer board measuring 100 × 100 mm, with 66 components from 23 distinct parts.
Other key parts include the 74LS244, 74LS245, 74LS139, 74LS32 and 74LS688. By type, the board carries 25 capacitors, 14 ICs, 14 resistors, 5 diodes, 4 connectors and 1 relay.
It belongs with the retro computing designs in this gallery.
From the project
Modular Backplane Computer
Provides bi-directional 8 bit parallel port with buffering and full handshake and control signals
Centronics and IBM PC compatible with optional interrupt capability
Power, chip select, interrupt, and two status LEDs
K1 interrupt select INT# or NMI#, interrupt can optionally be fed to IM2 circuit on Z80 processor board via flying lead
Main components on the Z80PRINT
Z80PRINT bill of materials (BOM)
66 components, 23 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 5 | 74LS244 | DIP-20_W7.62mm | U1, U3, U27, U28, U29 |
| 1 | 74LS245 | DIP-20_W7.62mm | U2 |
| 1 | 74LS139 | DIP-16_W7.62mm | U4 |
| 1 | 74LS32 | DIP-14_W7.62mm | U5 |
| 1 | 74LS688 | DIP-20_W7.62mm | U6 |
| 1 | 74LS04 | DIP-14_W7.62mm | U21 |
| 2 | 74LS374 | DIP-20_W7.62mm | U25, U26 |
| 1 | 74LS06 | DIP-14_W7.62mm | U30 |
| 1 | 74LS08 | DIP-14_W7.62mm | U32 |
| 1 | SPARES | PinHeader_1x10_P2.54mm_Vertical | P1 |
| 1 | Z80 BUS BACKPLANE | PinHeader_2x25_P2.54mm_Horizontal | P2 |
| 1 | DAISY CHAIN | PinHeader_1x04_P2.54mm_Vertical | P3 |
| 1 | PARALLEL | PinHeader_2x13_P2.54mm_Horizontal | P31 |
| 1 | INT SEL | PinHeader_1x03_P2.54mm_Horizontal | K1 |
| 1 | 10K | R_Array_SIP9 | RR1 |
| 1 | 4700 | R_Array_SIP10 | RR3 |
| 1 | IO PORT ADDR | SW_DIP_SPSTx08_Slide_9.78x22.5mm_W7.62mm_P2.54mm | SW1 |
| 5 | LED | LED_D3.0mm | D1, D2, D3, D4, D5 |
| 14 | 0.1u | C_Disc_D5.0mm_W2.5mm_P5.00mm | C1, C2, C3, C4, C5, C6, C7, C8 +6 |
| 2 | 10u | CP_Radial_D5.0mm_P2.50mm | C10, C11 |
Show 3 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 9 | 2.2nF | C_Disc_D5.0mm_W2.5mm_P5.00mm | C16, C17, C18, C19, C20, C21, C22, C23 +1 |
| 9 | 27 | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1, R2, R3, R4, R5, R6, R7, R8 +1 |
| 5 | 470 | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R10, R11, R12, R13, R14 |
Z80PRINT design files
The KiCad project lives in the lynchaj/nhyodyne repository on GitHub; these links point at the commit this page was built from.
Z80PRINT: common questions
How big is the Z80PRINT PCB?
The Z80PRINT measures 100 × 100 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Z80PRINT?
66 components, from 23 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the Z80PRINT design files?
From the lynchaj/nhyodyne repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the Z80PRINT design in my own project?
The repository has no license, so all rights stay with lynchaj. Use it as a reference, and ask the author before reusing the design.
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