Isa extension
About the Isa extension PCB
Isa extension is an open source PCB design by miselin, published on GitHub under the CERN-OHL-P-2.0 license. It is a 2-layer board measuring 73 × 123.6 mm, with 16 components from 3 distinct parts.
By type, the board carries 12 capacitors and 4 connectors.
From the project
The M88 Computer
This repository contains the KiCad project(s) and ROM source code for the M88 computer project. Learn more about the project at https://m88.computer.
The top-level KiCad project is the main KiCad project for the M88's Micro-ATX motherboard.
The isai2c` directory contains a KiCad project for an ISA-to-I2C bridge, designed around readily available parts with only one SMT IC.
Isa extension bill of materials (BOM)
16 components, 3 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | Samtec SSQ-115-02-T-D-RA | PinHeader_2x31_P2.54mm_Horizontal | J1 |
| 3 | Bus_ISA_8bit | 755308430_ISA | J2, J3, J4 |
| 12 | 10UF 16V 20% | CP_Radial_D5.0mm_P2.50mm | C1, C2, C3, C4, C5, C6, C7, C8 +4 |
Isa extension design files
The KiCad project lives in the miselin/M88 repository on GitHub; these links point at the commit this page was built from.
Isa extension: common questions
How big is the Isa extension PCB?
The Isa extension measures 73 × 123.6 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Isa extension?
16 components, from 3 distinct parts. The full bill of materials is listed on this page.
Where can I download the Isa extension design files?
From the miselin/M88 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Isa extension design in my own project?
Yes, under the terms of its CERN-OHL-P-2.0 license, which miselin chose for the repository.
