HardLabs

Multi

homebrew8088·8088-PC-Compatible·Kicad/Older PCB Not guaranteed To Work/Multi ATX 10 ISA/Multi.kicad_pcb

Multi PCB layout, top view — open source board by homebrew8088
Simulate this board

About the Multi PCB

Multi is an open source PCB design by homebrew8088, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 243.8 × 172.7 mm, with 85 components from 32 distinct parts.

Other key parts include the 74LS573, 74LS245, 82C42/83C42, 74LS07 and 74LS138. By type, the board carries 33 capacitors, 18 resistors, 15 connectors, 13 ICs, 1 crystal and 1 switch.

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)

Multi, from the project README
From the project README

Main components on the Multi

74LS57374LS24582C42/83C4274LS0774LS13874LS04828474LS7474LS139

Multi bill of materials (BOM)

85 components, 32 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
74LS573
U1
1
74LS245
U2
1
82C42/83C42
U3
1
74LS07
U4
3
74LS138
U5, U7, U8
1
74LS04
U6
1
8284
U9
1
74LS74
U10
3
74LS139
U11, U12, U13
1
14.31818 MHz
Y2
10
Bus_ISA_8bit
J1, J4, J5, J7, J8, J9, J12, J13 +2
1
Mini-DIN-6
J2
1
SPK
J3
1
PWR ON
J6
2
Conn_02x08_Counter_Clockwise
J10, J11
1
PWR SW
8x8mm1
1
Conn_02x12_Top_Bottom
ATXPOWER1
1
PORT 0XE0
CH376
1
RESET
SW1
1
POWER
D1
Show 12 more
QtyPartRefs
8
0.1UF
0.1uF
C1, C2, C3, C4, C5, C6, C7, C8
25
0.1uF
C9, C10, C11, C12, C13, C14, C15, C16 +17
1
27R
510 ohm
R1
1
510R
510 ohm
R2
1
510R
27 ohm
R3
1
10K
510 ohm
R4
1
10K
10k ohm
R5
6
10k ohm
R6, R7, R8, R9, R12, R13
3
27 ohm
R14, R17, R18
1
33 ohm
R112
2
10k ohm
RN1, RN3
1
10K ohm
RN2

Multi 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.

Multi: common questions

How big is the Multi PCB?

The Multi measures 243.8 × 172.7 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Multi?

85 components, from 32 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 Multi 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 Multi design in my own project?

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

More boards in 8088-PC-Compatible