CPU
About the CPU PCB
CPU is an open source PCB design by Synthron, published on GitHub. It is a 4-layer board measuring 83.3 × 68.2 mm, with 16 components from 13 distinct parts.
Other key parts include the 65C02 / 65816, 74HC00, 74HC245 and 74LS573. By type, the board carries 6 connectors, 5 capacitors, 4 ICs 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 CPU
CPU bill of materials (BOM)
16 components, 13 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 65C02 / 65816 | DIP-40_W15.24mm | U1 |
| 1 | 74HC00 | DIP-14_W7.62mm | U2 |
| 1 | 74HC245 | DIP-20_W7.62mm_LongPads | U3 |
| 1 | 74LS573 | DIP-20_W7.62mm | U4 |
| 1 | ABORT | SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm_NumberLabels | J1 |
| 1 | SO/MX | SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm_NumberLabels | J2 |
| 1 | Bus_PCI_6502 | BUS_PCI | J3 |
| 1 | Bank Bridge A | PinHeader_1x08_P2.54mm_Vertical | J5 |
| 1 | Bank Bridge B | PinHeader_1x08_P2.54mm_Vertical | J6 |
| 1 | Bank Bridge C | PinHeader_1x08_P2.54mm_Vertical | J7 |
| 4 | 100n | C_0805_2012Metric | C1, C2, C3, C4 |
| 1 | 10µ | CP_Radial_D5.0mm_P2.50mm | C5 |
| 1 | 3k3 | R_Array_SIP9 | RN1 |
CPU design files
The KiCad project lives in the Synthron/S65 repository on GitHub; these links point at the commit this page was built from.
CPU: common questions
How big is the CPU PCB?
The CPU measures 83.3 × 68.2 mm, has 4 copper layers and is 2.6062 mm thick.
How many components are on the CPU?
16 components, from 13 distinct parts. The full bill of materials is listed on this page.
Where can I download the CPU 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 CPU 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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VIAs
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