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V40 64K 640K ISA

homebrew8088·8088-PC-Compatible·Kicad/V40 64K 640K ISA/V40 64K 640K ISA.kicad_pcb

V40 64K 640K ISA PCB layout, top view — open source board by homebrew8088
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About the V40 64K 640K ISA PCB

V40 64K 640K ISA is an open source PCB design by homebrew8088, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 145.8 × 91.4 mm, with 23 components from 14 distinct parts.

Other key parts include the 64K ROM, 64K, AS6C1008, AS6C4008 and 74LS139. By type, the board carries 10 ICs, 10 capacitors, 2 resistors and 1 crystal.

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)

V40 64K 640K ISA, from the project README
From the project README

Main components on the V40 64K 640K ISA

64K ROM64KAS6C1008AS6C400874LS13974LS1387020874LS57374LS245

V40 64K 640K ISA bill of materials (BOM)

23 components, 14 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
64K ROM
U1
1
64K
U2
1
AS6C1008
U3
1
AS6C4008
U4
1
74LS139
U5
1
74LS138
U6
1
70208
U7
2
74LS573
U8, U10
1
74LS245
U9
1
Crystal
Y1
8
0.1UF
0.1uF
C1, C2, C3, C4, C5, C6, C7, C8
2
0.1uF
C9, C10
1
27R
10K ohm
R1
1
510R
10K ohm
R2

V40 64K 640K ISA 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.

V40 64K 640K ISA: common questions

How big is the V40 64K 640K ISA PCB?

The V40 64K 640K ISA measures 145.8 × 91.4 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the V40 64K 640K ISA?

23 components, from 14 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 V40 64K 640K ISA 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 V40 64K 640K ISA 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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