amberisvibin/chibi-pc09
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add code of conduct section

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Amber
2020-09-15 11:02:22 -04:00
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# chibi pc-80
![GitHub last commit](https://img.shields.io/github/last-commit/amberisvibin/chibi-pc80) [![Contributor Covenant](https://img.shields.io/badge/Contributor%20Covenant-v2.0%20adopted-ff69b4.svg)](CODE_OF_CONDUCT.md)
### Description:
## Description:
The pc-80 will be a Z80-based microcomputer with an advanced I/O system, boot scheme, and graphics hardware:
- On boot, the coldboot ROM will search a FAT SD card for a bootfile, load it into RAM, and execute it. The bootfile will be a BIN file that is copied directly to RAM. This bootfile can be copied and moved the same as any other file, allowing for easy backup and distribution of boot code. Due to a quirk in the way the Z80 (and CP/M) operates, once the coldboot ROM has finished its work, it will remove itself from the memory address space.
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- The graphics system will be more advanced than most homebrew computer projects. It will have a custom TTL logic graphics card that will be able to display 320x200 in 256 colours over VGA. There will be 64k of double-buffered VRAM, interfaced via commands. The buffer will not copy unless a 'done' command is sent. This way, if the frame is not ready, the previous frame will be displayed, preventing tearing. These commands will include an auto-increment function, allowing entire bitmaps to be copied with ease. It will also have a text mode, utilizing bitmap copy from the character ROM.
### Todo:
## Todo:
- Design mainboard
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- Program ROM
- Port software (customized [FUZIX](https://github.com/EtchedPixels/FUZIX))?
## Code of Conduct
This project uses the [Contributor Covenant](CODE_OF_CONDUCT.md). While a code of conduct is not *strictly* neccesary at this stage, any form of discrimination will **not** be tolerated. Thank you for understanding.