HardLabs

Intel wildcard-88-motherboard

skiselev·intel-wildcard-88-motherboard·KiCad/WildcardXT.kicad_pcb

Intel wildcard-88-motherboard PCB layout, top view — open source PIC board by skiselev

About the Intel wildcard-88-motherboard PCB

Intel wildcard-88-motherboard is an open source PIC PCB design by skiselev, published on GitHub under the CERN-OHL-S-2.0 license. It is a 2-layer board measuring 116.8 × 165.1 mm, with 75 components from 33 distinct parts.

Its main chip is the PIC12F629, from the PIC family. Other key parts include the WILDCARD88, SIMM30, 74F245, 74F157 and 74F27. By type, the board carries 27 capacitors, 9 ICs, 6 connectors, 6 resistors, 5 diodes and 2 jumpers.

It belongs with the audio designs in this gallery.

From the project

An IBM PC/XT compatible motherboard utilizing the Intel Wildcard 88 module

The Intel Wildcard 88 module was used in several XT compatible computers, for example in the Leading Edge Model D computers (made by Daewoo). One of more unusual applications - it was used as a control module for the Nikon NASA F4 camera, one of the first digital cameras that flew on several Space Shuttle missions.

5 ISA slots. Number of slots it tradeoff between board size and extensibility. 5 slots should be enough (the same number as on the original IBM PC motherboard), assuming the slots will be used for the following cards: 1. Display card 2. Floppy disk controller card 3. Hard drive…

Main components on the Intel wildcard-88-motherboard

WILDCARD88SIMM30PIC12F62974F24574F15774F27LM7905

Intel wildcard-88-motherboard bill of materials (BOM)

75 components, 33 distinct parts.

QtyPartRefs
1
WILDCARD88
U1
1
SIMM30
U2
1
PIC12F629
U3
1
74F245
U4
3
74F157
U5, U6, U7
1
74F27
U8
1
LM7905
U9
1
PN2222A
Q1
1
POWER
P1
1
KEYBOARD
P2
1
SPEAKER
P3
1
5V
P4
1
RESET
P5
1
PWR_LED
P6
5
BUSPC_HOST
BUS1, BUS2, BUS3, BUS4, BUS5
8
CONN_1
HOLE1, HOLE2, HOLE3, HOLE4, HOLE5, HOLE6, HOLE7, HOLE8
1
VID0
JP1
1
E0_PASS
JP2
2
33
RR1, RR2
2
4.7k
RR3, RR4
Show 13 more
QtyPartRefs
1
SPEAKER
SP1
1
RESET
SW1
1
1N4148
D1
1
5V
D2
1
-5V
D3
1
12V
D4
1
-12V
D5
9
0.1uF
C1, C2, C3, C4, C5, C6, C7, C8 +1
1
0.01uF
C10
17
10uF
C11, C12, C13, C14, C15, C16, C17, C18 +9
1
1k
R1
3
470
R2, R3, R4
2
1.5k
R5, R6

Intel wildcard-88-motherboard design files

The KiCad project lives in the skiselev/intel-wildcard-88-motherboard repository on GitHub; these links point at the commit this page was built from.

Intel wildcard-88-motherboard: common questions

What microcontroller does the Intel wildcard-88-motherboard use?

The Intel wildcard-88-motherboard is built around the PIC12F629, from the PIC family.

How big is the Intel wildcard-88-motherboard PCB?

The Intel wildcard-88-motherboard measures 116.8 × 165.1 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Intel wildcard-88-motherboard?

75 components, from 33 distinct parts. The full bill of materials is listed on this page.

Where can I download the Intel wildcard-88-motherboard design files?

From the skiselev/intel-wildcard-88-motherboard repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Intel wildcard-88-motherboard design in my own project?

Yes, under the terms of its CERN-OHL-S-2.0 license, which skiselev chose for the repository.

Can I test firmware for the Intel wildcard-88-motherboard without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug PIC firmware against it before you order a PCB.

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