2 layers
Small-9
NVlabs/Cypress
Cypress is a scalable, GPU-accelerated PCB placement method inspired by VLSI. It incorporates tailored cost functions, constraint handling, and optimized techniques adapted for PCB layouts.
476 parts56Apache-2.0
2 layers203.2 × 114.6 mm
Bkg-77000
durgadas311/MmsCpm317MMS CP/M 3 Source, Binaries, and related code
- Size
- 203.2 × 114.6 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 476
- Nets
- 2
- Pads
- 1,656
- Tracks, vias
- 786, 0
- Pours
- 78
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 30 Sep 2017
- Updated
- 2 Oct 2026
Overview
Bkg-77000 is an open-source printed circuit board by durgadas311, from the durgadas311/MmsCpm3 repository on GitHub. It is a 2-layer board of 203.2 × 114.6 mm with 476 parts on 2 nets, routed with 786 tracks and 0 vias.
README
README.mdMmsCpm3
MMS CP/M 3 Source, Binaries, and related code.
Subdirectories "src" and "bin" are for source and binary files, respectively. Top-level directories are:
sys:
- CP/M 3 System components, required to build CPM3.SYS
doc:
- Documentation, OpenOffice, PDF, text.
help:
- CP/M 3 HELP source files and build scripts.
util:
- CP/M 3 non-standard utilities, MMS and modern.
net:
- CP/NET remnants, network boot support.
defsasi3:
- DEFSASI3 files.
dist:
- Standard DRI CP/M 3 distribution files
img:
- Pre-built (and possibly pre-used) bootable images. Subdirectories organize images by system config.
3p
- Third-party software, source where available.
- cc80 - Software Toolworks C compiler
- swtw-c80 - Another vintage of Software Toolworks C compiler
- magicwand - Magic Wand word processing
rom
- H89/H8 monitor ROM software
cpm2
- MMS CP/M 2.2 software (sys, util subdirectories)
tools
- A place for host tools - run on modern PCs not CP/M
All source/text files are in Linux/Unix format - no CR or Ctrl-Z characters. Use "unix2dos" ("dos2unix" package) or equivalent to convert to CP/M format. Or TR.COM may be used in CP/M to translate line endings.
Parts
476| Qty | Value | Footprint | References |
|---|---|---|---|
| 328 | , , , , , , , , , , , , , , , +312 | ||
| 5 | Capacitor_THT:CP_Axial_L11.0mm_D5.0mm_P18.00mm_Horizontal | , , , , | |
| 1 | Connector_PinHeader_2.54mm:PinHeader_2x37_P2.54mm_Vertical |
The 334 most common of 476 parts.
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Questions
How big is the Bkg-77000 PCB?
It measures 203.2 × 114.6 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Bkg-77000 use?
476 parts. 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 Bkg-77000 KiCad files?
From the durgadas311/MmsCpm3 repository on GitHub, at the commit this page was made from: the board is pcb/bkg-77000/bkg-77000.kicad_pcb and its schematic pcb/bkg-77000/bkg-77000.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Bkg-77000 design in my own project?
Its repository states no licence, so its author keeps all rights: ask durgadas311 before reusing the design.