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512k

homebrew8088·8088-PC-Compatible·Kicad/Other PCBs/512K ISA/512k.kicad_pcb

512k PCB layout, top view — open source board by homebrew8088
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About the 512k PCB

512k is an open source PCB design by homebrew8088, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 104 × 73.9 mm, with 10 components from 6 distinct parts.

Other key parts include the 62256, 28C256, AS6C4008, 74LS139 and 74LS138. By type, the board carries 5 ICs and 5 capacitors.

From the project

8088 PC XT Compatible

\ \ This is a repository for my 8088 PC Compatible project developed in 2021. The Motherboard is built to be generally PC XT compatible.

Join the discussion group on Discord\ https://discord.gg/AswNqwpRGP

eBay store\ http://www.ebay.com/sch/emil6190/m.html

Features:\ -8088, NEC V20, OR NEC V40 Processor\ -512k RAM (This can be changed)\ -8 Bit ISA sockets (4 slots or 7 slots)\ -PC Speaker\ -USB "Hard Drive"\ -PS/2 Keyboard\ -ATX form factor\ -Add on DMA controller (7 slot ISA only)

512k, from the project README
From the project README

Main components on the 512k

6225628C256AS6C400874LS13974LS138

512k bill of materials (BOM)

10 components, 6 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
62256
U1
1
28C256
U2
1
AS6C4008
U3
1
74LS139
U4
1
74LS138
U5
5
0.1UF
0.1uF
C1, C2, C3, C4, C5

512k design files

The KiCad project lives in the homebrew8088/8088-PC-Compatible repository on GitHub; these links point at the commit this page was built from.

512k: common questions

How big is the 512k PCB?

The 512k measures 104 × 73.9 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the 512k?

10 components, from 6 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the 512k design files?

From the homebrew8088/8088-PC-Compatible repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the 512k design in my own project?

Yes, under the terms of its GPL-3.0 license, which homebrew8088 chose for the repository.

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