LPT
About the LPT PCB
LPT is an open source PCB design by Synthron, published on GitHub. It is a 4-layer board measuring 83.3 × 68.2 mm, with 18 components from 10 distinct parts.
Other key parts include the 74HC138, 74HC00, 74AHC541, 74HCT574 and 74HC02. By type, the board carries 8 capacitors, 7 ICs, 2 connectors and 1 resistor.
It belongs with the retro computing designs in this gallery.
From the project
Yet another 8bit Retro Computer
Completely bloated, overkill and fully hackable!
- [x] Finish Hardware - Software - [ ] WozMon - [x] Implement Serial IO - [x] Implement Input Buffer - [ ] extended for block write - [ ] Kernel Functions - [ ] General SysCalls - [ ] Hardware Drivers - [x] RAM-Kernel - [x] Basic - [x] EhBasic - [ ] File System - [ ] Operating System - Hardware - [ ] order PCBs - [ ] order parts - [ ] solder together
Main components on the LPT
LPT bill of materials (BOM)
18 components, 10 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | 74HC138 | DIP-16_W7.62mm | U1, U2 |
| 1 | 74HC00 | DIP-14_W7.62mm | U3 |
| 1 | 74AHC541 | DIP-20_W7.62mm | U4 |
| 2 | 74HCT574 | DIP-20_W7.62mm | U5, U6 |
| 1 | 74HC02 | DIP-14_W7.62mm | U7 |
| 1 | DB25_Receptacle | DSUB-25_Female_EdgeMount_P2.77mm | J1 |
| 1 | Bus_PCI_6502 | BUS_PCI | J2 |
| 7 | 100n | C_0805_2012Metric | C1, C2, C3, C4, C5, C6, C7 |
| 1 | 10µ | CP_Radial_D5.0mm_P2.50mm | C8 |
| 1 | 10k | R_Array_SIP6 | RN1 |
LPT design files
The KiCad project lives in the Synthron/S65 repository on GitHub; these links point at the commit this page was built from.
LPT: common questions
How big is the LPT PCB?
The LPT measures 83.3 × 68.2 mm, has 4 copper layers and is 1.6062 mm thick.
How many components are on the LPT?
18 components, from 10 distinct parts. The full bill of materials is listed on this page.
Where can I download the LPT design files?
From the Synthron/S65 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the LPT design in my own project?
The repository has no license, so all rights stay with Synthron. Use it as a reference, and ask the author before reusing the design.
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ROM
83.3 × 68.2 mm10 parts4LNo license2
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