4 layers165 × 142.5 mm
Testboard
anthonydotmoe/68040pc
A general purpose computer platform for retrocomputing enthusiasts
175 parts9
4 layers221 × 243.8 mm
68040pc
anthonydotmoe/68040pc9A general purpose computer platform for retrocomputing enthusiasts
- Size
- 221 × 243.8 mm
- Copper layers
- 4
- Thickness
- 1.22 mm
- Parts
- 29
- Nets
- 589
- Pads
- 1,586
- Tracks, vias
- 0, 0
- Routed
- Not yet
- KiCad
- KiCad 7 (file 20221018)
- Created
- 22 Aug 2023
- Updated
- 23 Sep 2026
Overview
68040pc is an open-source printed circuit board by anthonydotmoe, from the anthonydotmoe/68040pc repository on GitHub. It is a 4-layer board of 221 × 243.8 mm with 29 parts on 589 nets.
It is built around the ICE40HX4K-TQ144, W25Q32JVSSIM and SN74ALVC164245DL, with the LTST-C191KGKT among its other parts. Its parts include 19 connectors, 5 ICs, 3 resistors, 1 capacitor and 1 diode. It belongs with the retro computing and games and fPGA and programmable logic boards and the FPGA and CPLD boards of this library.
Main components
4
ICE40HX4K-TQ144
TQFP-144(20x20)-40℃~+100℃ 1.14V~1.26V 107 3520 440 81920bit iCE40 HX TQFP-144(20x20) Programmable Logic Device (CPLDs/FPGAs) ROHSLatticeProgrammable Logic Device (CPLDs/FPGAs)
W25Q32JVSSIM
SOIC-8-208mil-40℃~+85℃ 100,000 cycles 133MHz 2.7V~3.6V 20 Years 32Mbit 3ms SPI SOIC-8-208mil NOR FLASH ROHSWinbond ElecNOR FLASH
SN74ALVC164245DL
SSOP-48-300mil-40℃~+85℃ 2 2.3V~3.6V 3V~5.5V 8 Bidirectional Tri-State SSOP-48-300mil Translators, Level Shifters ROHSTexas InstrumentsTranslators, Level Shifters
LTST-C191KGKT
0603-55℃~+85℃ 130° 20mA 2V 35mcd 567.5nm~576.5nm 574nm 75mW Discrete Diode Water Clear Yellow Green 0603 LED Indication - Discrete ROHSLite-OnLED Indication - Discrete
README
hardware/testboard/README.mdErrata
-
MC68150's TA line is not open-collector! Another 74LVC1G08 AND gate should be used to connect FPGA TA and MC68150 TA to the CPU's TA.
-
U802A schematic pin markings are incorrect. At the FPGA, the following changes need to be made:
- LV_SIZ1 -> R/W
- LV_SIZ0 -> LV_SIZ0
- R/W -> LV_SIZ1
Parts
29| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | EXP | 68040:EXP | J1, J2, J3, J4, J5, J6, J7, J8 |
| 4 | ~ | 68040:SIMM-72 | J9, J10, J11, J12 |
| 2 | 10K | Resistor_SMD:R_0603_1608Metric | R2, R3 |
| 2 | Conn_01x06 | 68040:15-48-0106 | P8, P9 |
| 2 | SN74ALVC164245 | Package_SO:TSSOP-48_6.1x12.5mm_P0.5mm | U3, U4 |
| 1 | 0.1u | Capacitor_SMD:C_0603_1608Metric | C3 |
| 1 | 2.2K | Resistor_SMD:R_0603_1608Metric | R1 |
| 1 | 68LC040 | 68040:PGA179 | U1 |
| 1 | COM1 | Connector_PinHeader_2.54mm:PinHeader_2x05_P2.54mm_Vertical | J15 |
| 1 | COM2 | Connector_PinHeader_2.54mm:PinHeader_2x05_P2.54mm_Vertical | J16 |
| 1 | DIN-5_180degree | 68040:DIN5-180 | J13 |
| 1 | ICE40HX4K-TQ144 | Package_QFP:TQFP-144_20x20mm_P0.5mm | U2 |
| 1 | LPT | Connector_PinHeader_2.54mm:PinHeader_2x13_P2.54mm_Vertical | J17 |
| 1 | LTST-C191KGKT | LED_SMD:LED_0603_1608Metric | D1 |
| 1 | Mini-DIN-6 | 68040:Mini-DIN6 | J14 |
| 1 | W25Q32JVSSIM | Package_SO:SOIC-8_5.23x5.23mm_P1.27mm | U5 |
Questions
How big is the 68040pc PCB?
It measures 221 × 243.8 mm and has 4 copper layers, 1.22 mm thick.
What parts does the 68040pc use?
29 parts, built around the ICE40HX4K-TQ144, W25Q32JVSSIM, SN74ALVC164245DL and LTST-C191KGKT. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the 68040pc KiCad files?
From the anthonydotmoe/68040pc repository on GitHub, at the commit this page was made from: the board is hardware/motherboard/68040pc.kicad_pcb and its schematic hardware/motherboard/68040pc.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the 68040pc design in my own project?
Its repository states no licence, so its author keeps all rights: ask anthonydotmoe before reusing the design.
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