https://github.com/qalle2/nes-homebrew

miscellaneous NES programs
https://github.com/qalle2/nes-homebrew

6502 asm6 assembly homebrew nes

Last synced: 2 months ago
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miscellaneous NES programs

• Host: GitHub
• URL: https://github.com/qalle2/nes-homebrew
• Owner: qalle2
• License: gpl-3.0
• Created: 2019-12-14T23:19:36.000Z (over 6 years ago)
• Default Branch: main
• Last Pushed: 2024-07-15T12:42:21.000Z (almost 2 years ago)
• Last Synced: 2024-07-15T14:58:59.906Z (almost 2 years ago)
• Topics: 6502, asm6, assembly, homebrew, nes
• Language: Assembly
• Homepage:
• Size: 542 KB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

README

          
# nes-homebrew

Programs for the [NES](https://en.wikipedia.org/wiki/Nintendo_Entertainment_System).

Thanks to [PDRoms](https://pdroms.de) for archiving some of these programs.

Table of contents:

* [Files for each program](#files-for-each-program)

* [The programs](#the-programs)

  * [Video](#video)

  * [Hello World](#hello-world)

  * [Transgender flag](#transgender-flag)

## Files for each program

* `example.asm`: source code (assembles with [ASM6](https://www.romhacking.net/utilities/674/))

* `example-assemble.sh`: Linux script that assembles the program (warning: deletes files)

* `example-chr.bin.gz`: raw CHR ROM data (gzip compressed)

* `example-chr.png`: CHR ROM data as an image (can be encoded with `nes_chr_encode.py` in my [NES utilities](https://github.com/qalle2/nes-util))

* `example.nes.gz`: assembled program (iNES format, gzip compressed)

* `example.png`: screenshot

## The programs

### Video

Plays a short video of Doom gameplay (64×48 pixels, 4 colors, 10 fps, no audio).

![video.asm](video.png)

### Hello World

Prints *Hello, World!*.

![hello.asm](hello.png)

### Transgender flag

Shows the transgender flag.

Note: this program is heavily optimized for size; it does not represent good programming practice.

The actual size is 95 bytes (including interrupt vectors and CHR data).

![transflag.asm](transflag.png)

The program in hexadecimal:

```

a2038e00202c022010fbcad0f88a20f1

ffa002a2188d0720cad0faa9ff88d0f3

a93f20f1ffa003b9f8ff8d07208810f7

a92020f1ffa005b9ebffa2c08d0720ca

d0fa8810f2a90a8d0120000102000201

8d06208e06206025210030a1ffebff

```