2 layers191.8 × 121.3 mm
8-Bit CPU 32k
slu4coder/Minimal-UART-Computer-1-2
Legacy: Version 1 and 2 of my TTL-only CPU featuring UART I/O, an expansion port, 512KB SSD at up to 10MHz clock speed
109 parts184
2 layers127 × 76.2 mm
Hx8k brk mem
msinger/iceboy26Game Boy clone for Lattice iCE40 FPGAs
- Size
- 127 × 76.2 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 23
- Nets
- 75
- Pads
- 330
- Tracks, vias
- 1,328, 16
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 16 Aug 2021
- Updated
- 29 Mar 2025
Overview
Hx8k brk mem is an open-source printed circuit board by msinger, from the msinger/iceboy repository on GitHub. It is a 2-layer board of 127 × 76.2 mm with 23 parts on 75 nets, routed with 1,328 tracks and 16 vias.
It is built around the 74HC32D and 74HC04D. Its parts include 9 capacitors, 9 ICs, 3 resistors and 2 connectors. 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
2
74HC32D
SOP-14-40℃~+125℃ 1.5V~4.2V 1.9V、4.4V、5.9V 100mV、400mV、400mV 2 2V~6V 2uA 4 5.2mA 5.2mA 500mV~1.8V 6ns@6V,50pF 74HC Series OR Gate SOIC-14 Logic Gates ROHSNexperiaLogic Gates74HC04D
SOP-14-40℃~+125℃ 1 1.5V~4.2V 1.9V、3.7V、5.2V 100mV、400mV、400mV 14ns@6V,50pF 2V~6V 2uA 5.2mA 5.2mA 500mV~1.8V 6 74HC SOIC-14 Inverters ROHSNexperiaInverters
README
READMEiceboy
http://iceboy.a-singer.de/ https://github.com/msinger/iceboy/ https://sourceforge.net/projects/iceboy/
Licensed under CERN-OHL-W v2 https://cern-ohl.web.cern.ch/
The goal of this project is to implement a GameBoy in Verilog using the open source IceStorm tools for Lattice iCE40HX-8K FPGAs. You can get the tools from here: http://www.clifford.at/icestorm/
Parts
23| Qty | Value | Footprint | References |
|---|---|---|---|
| 9 | 100n | Capacitor_THT:C_Disc_D3.0mm_W2.0mm_P2.50mm | C1, C2, C3, C4, C5, C6, C7, C8, C9 |
| 4 | AS6C4008 | Package_DIP:DIP-32_W15.24mm_Socket | U1, U2, U3, U4 |
| 3 | 10k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1, R2, R3 |
| 2 | 74HC32 | Package_DIP:DIP-14_W7.62mm_Socket | U8, U9 |
| 2 | AS6C62256 | Package_DIP:DIP-28_W15.24mm_Socket | U5, U6 |
| 2 | Conn_02x20_Odd_Even | Connector_PinSocket_2.54mm:PinSocket_2x20_P2.54mm_Vertical | J1, J2 |
| 1 | 74HC04 | Package_DIP:DIP-14_W7.62mm_Socket | U7 |
Questions
How big is the Hx8k brk mem PCB?
It measures 127 × 76.2 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Hx8k brk mem use?
23 parts, built around the 74HC32D and 74HC04D. 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 Hx8k brk mem KiCad files?
From the msinger/iceboy repository on GitHub, at the commit this page was made from: the board is pcbs/hx8k_brk_mem/hx8k_brk_mem.kicad_pcb and its schematic pcbs/hx8k_brk_mem/demux.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Hx8k brk mem design in my own project?
Its repository states no licence, so its author keeps all rights: ask msinger before reusing the design.
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