2 layers157.5 × 73.9 mm
2 layers25.4 × 21 mm
8086 PC Compatible
- Size
- 25.4 × 21 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 6
- Nets
- 13
- Pads
- 46
- Tracks, vias
- 54, 4
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 6 Dec 2021
- Updated
- 6 May 2025
Overview
Trigger is an open-source printed circuit board by homebrew8088, from the homebrew8088/8086-PC-Compatible repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 25.4 × 21 mm with 6 parts on 13 nets, routed with 54 tracks and 4 vias.
It is built around the 74LS04PC. Its parts include 2 capacitors, 2 ICs and 2 connectors.
Main components
1README
README.md8086 PC Compatible
This is a repository for my 8086 PC Compatible project developed in 2021. The Motherboard is built to be generally PC XT/AT compatible.
THIS DOES NOT WORK CORRECTLY FOR REFERENCE ONLY
https://www.homebrew8088.com
http://www.ebay.com/sch/emil6190/m.html
Features:
-8086, NEC V30
-512k RAM (This can be changed)
-16 Bit ISA Slots
-PC Speaker
-USB "Hard Drive"
-PS/2 Keyboard
-ATX form factor
-Add on DMA controller (Has not been built)
This project is very closely related to my other 8088 PC Compatible project https://github.com/homebrew8088/8088-PC-Compatible
Parts
6| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 0.1uF | Capacitor_THT:C_Disc_D4.3mm_W1.9mm_P5.00mm | C1, C2 |
| 2 | Conn_01x07 | Connector_PinHeader_2.54mm:PinHeader_1x07_P2.54mm_Vertical | J1, J2 |
| 1 | 74LS04 | Package_DIP:DIP-14_W7.62mm | U1 |
| 1 | LS74 | Package_DIP:DIP-14_W7.62mm | U2 |
Questions
How big is the Trigger PCB?
It measures 25.4 × 21 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Trigger use?
6 parts, built around the 74LS04PC. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Trigger KiCad files?
From the homebrew8088/8086-PC-Compatible repository on GitHub, at the commit this page was made from: the board is Kicad/Trigger/Trigger.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Trigger design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
More from homebrew8088/8086-PC-Compatible
4- 2 layers216.4 × 106.7 mm
- 2 layers203.4 × 73.9 mm
- 2 layers25.4 × 89.5 mm
Similar boards
- 2 layers171.2 × 72.9 mm
Amiga gfxcard old
mntmn/amiga2000-gfxcard
MNT VA2000, an Open Source Amiga 2/3/4000 Graphics Card (Zorro II/III), written in Verilog
34 parts1k - 2 layers196.3 × 118.7 mm
Motherboard
Redherring32/OpenTendo
An Open-Source HardWare (OSHW) recreation of the original 1985 front-loading NES Motherboard
100 parts860 - 2 layers49.6 × 78.3 mm
Odyssey
jotego/jtcores
FPGA cores compatible with multiple arcade game machines and KiCAD schematics of arcade games. Working on MiSTer FPGA/Analogue Pocket
24 parts346GPL-3.0 - 2 layers237.5 × 102.9 mm
Instruction
jes/scamp-cpu
A homebrew 16-bit CPU with a homebrew Unix-like-ish operating system.
112 parts301Unlicense - 2 layers182.9 × 172.7 mm
- 2 layers365.1 × 203.2 mm
DIAG
Nakazoto/CenturionComputer
This is just a simple backup of all the files related to the Centurion that I have stored on my HD. The Wiki itself has far more in-depth information about the Centurion and it's individual cards.
150 parts172 - 2 layers135.3 × 106.7 mm
- 2 layers370.8 × 298.5 mm
8 Bit Computer
The-Invent0r/8-bit-Computer-PCB
These are the KiCAD files for my 8-Bit Computer.
323 parts142