HardLabs

ISA rev8

TheRetroWeb·PicoPOST·pcb/ISA rev8/ISA rev8.kicad_pcb

ISA rev8 PCB layout, top view — open source RP2040/RP2350 board by TheRetroWeb

About the ISA rev8 PCB

ISA rev8 is an open source RP2040/RP2350 PCB design by TheRetroWeb, published on GitHub under the CERN-OHL-P-2.0 license. It is a 2-layer board measuring 99.6 × 69.2 mm, with 42 components from 25 distinct parts.

Its main chip is the Pico, from the RP2040/RP2350 family. Other key parts include the 74LVC02, 74LVC11, 74LVC245 and 24LC01. By type, the board carries 14 resistors, 7 ICs, 7 diodes, 7 capacitors, 5 connectors and 1 buzzer.

It belongs with the displays & leds designs in this gallery, and the repository also holds 4 earlier revisions of it.

From the project

RPi Pico based POST (Power-On Self Test) Diagnostic Card

PicoPOST is a PC diagnostic card for systems with, at least, an 8-bit ISA slot. It's based around the Raspberry Pi Pico, powered by an RP2040.

PicoPOST is designed to provide many additional benefits over the basic POST cards that are commonly available from Chinese vendors on eBay and other sites.

This project is getting ready for public usage, with a few prototypes already in use for development purposes. More information soon as it gets finalized.

ISA rev8, from the project README
From the project README

Main components on the ISA rev8

74LVC0274LVC1174LVC245Pico24LC01

ISA rev8 bill of materials (BOM)

42 components, 25 distinct parts.

QtyPartRefs
1
74LVC02
U1
1
74LVC11
U2
3
74LVC245
U3, U4, U5
1
Pico
U6
1
24LC01
U7
1
PCB_Finger_ISA_8bit
J1
1
Remote Connector
J2
1
Power Select Jumper
J3
1
Remote Hardmount Connector
J4
1
Buzzer
J5
1
Buzzer
BZ1
1
Pico Reset
TP1
3
BAT54S
D1, D3, D7
2
green
D2, D5
1
red
D4
1
3.3V
D6
6
100n
C1, C2, C3, C4, C5, C6
1
1n
C7
1
39k
R1
2
47k
R2, R9
Show 5 more
QtyPartRefs
2
330
R3, R4
6
1000
R5, R6, R7, R8, R12, R14
1
68k
R10
1
10k
R11
1
12k
R13

ISA rev8 design files

The KiCad project lives in the TheRetroWeb/PicoPOST repository on GitHub; these links point at the commit this page was built from.

ISA rev8: common questions

What microcontroller does the ISA rev8 use?

The ISA rev8 is built around the Pico, from the RP2040/RP2350 family.

How big is the ISA rev8 PCB?

The ISA rev8 measures 99.6 × 69.2 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the ISA rev8?

42 components, from 25 distinct parts. The full bill of materials is listed on this page.

Where can I download the ISA rev8 design files?

From the TheRetroWeb/PicoPOST repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the ISA rev8 design in my own project?

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

Can I test firmware for the ISA rev8 without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.

More boards in PicoPOST

Earlier revisions in the repo: ISA rev7, ISA rev6, ISA rev5, ISA rev4

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