Cpu8085
About the Cpu8085 PCB
Cpu8085 is an open source PCB design by nandgate, published on GitHub under the MIT license. It is a 2-layer board measuring 122.9 × 99.6 mm, with 39 components from 21 distinct parts.
Other key parts include the 74LS573, 8085, 74LS245, 74HCT161 and ATF16V8C. By type, the board carries 10 capacitors, 10 resistors, 9 ICs, 5 connectors, 2 diodes and 1 crystal.
From the project
Hardware designs for 8-bit homebrew computer
Hardware files for the 8-bit homebrew project.
Each folder contains the KiCad project for a processor/board. Under the PLD there is a folder with the WinCUPL projects for the PLD for each board.
Main components on the Cpu8085
Cpu8085 bill of materials (BOM)
39 components, 21 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 3 | 74LS573 | DIP-20_W7.62mm | U1, U2, U4 |
| 1 | 8085 | DIP-40_W15.24mm_Socket | U3 |
| 1 | 74LS245 | DIP-20_W7.62mm | U5 |
| 1 | 74HCT161 | DIP-16_W7.62mm | U6 |
| 1 | ATF16V8C | DIP-20_W7.62mm | U7 |
| 1 | 74LS00 | DIP-14_W7.62mm | U8 |
| 1 | 28C256 | DIP-28_W15.24mm | U9 |
| 1 | 8.0 MHz | Oscillator_DIP-14 | X1 |
| 1 | Conn_02x05_Odd_Even | PinHeader_2x05_P2.54mm_Vertical | J1 |
| 2 | Conn_01x02 | PinHeader_1x02_P2.54mm_Vertical | J2, J3 |
| 1 | Conn_02x21_Odd_Even | PinHeader_2x21_P2.54mm_Vertical | J4 |
| 1 | Conn_02x01 | PinHeader_1x02_P2.54mm_Vertical | J5 |
| 1 | TBA_2-1211 | CONV_TBA_2-1211 | PS1 |
| 1 | SW_SPST | SW_DIP_SPSTx01_Slide_9.78x4.72mm_W7.62mm_P2.54mm | SW1 |
| 2 | IRL81A | LED_D5.0mm | D1, D2 |
| 9 | 0.1 uF | C_Rect_L7.2mm_W3.0mm_P5.00mm_FKS2_FKP2_MKS2_MKP2 | C1, C2, C3, C4, C5, C6, C7, C9 +1 |
| 1 | 47 uF | CP_Radial_D5.0mm_P2.00mm | C8 |
| 5 | R | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1, R2, R3, R4, R5 |
| 1 | 10.1K | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R6 |
| 2 | 3.3K | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R7, R8 |
Show 1 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | 10.5K | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R9, R10 |
Cpu8085 design files
The KiCad project lives in the nandgate/Homebrew-HW repository on GitHub; these links point at the commit this page was built from.
- Layoutcpu8085/cpu8085.kicad_pcb
- Schematiccpu8085/cpu8085.kicad_sch
Cpu8085: common questions
How big is the Cpu8085 PCB?
The Cpu8085 measures 122.9 × 99.6 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Cpu8085?
39 components, from 21 distinct parts. The full bill of materials is listed on this page.
Where can I download the Cpu8085 design files?
From the nandgate/Homebrew-HW repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Cpu8085 design in my own project?
Yes, under the terms of its MIT license, which nandgate chose for the repository.
