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DMA

homebrew8088·8088-PC-Compatible·Kicad/Other PCBs/DMA ISA/DMA.kicad_pcb

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

DMA is an open source PCB design by homebrew8088, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 132 × 73.9 mm, with 13 components from 8 distinct parts.

Other key parts include the 8237, 74LS139, 74LS04, 74LS670 and 74LS573. By type, the board carries 5 ICs, 5 capacitors and 3 resistors.

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)

DMA, from the project README
From the project README

Main components on the DMA

823774LS13974LS0474LS67074LS573

DMA bill of materials (BOM)

13 components, 8 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
8237
U1
1
74LS139
U2
1
74LS04
U3
1
74LS670
U4
1
74LS573
U5
5
0.1UF
0.1uF
C1, C2, C3, C4, C5
2
10K
10k ohm
R1, R2
1
27R
27 ohm
R3

DMA 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.

DMA: common questions

How big is the DMA PCB?

The DMA measures 132 × 73.9 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the DMA?

13 components, from 8 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 DMA 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 DMA 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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