asmgen 1.0

6502 code generator for Apple ][ and Atari 8-bit

Abstract

AsmGen - code generator for sprites, fonts, and images for Apple ][ hi-res and Atari 8-bit computers

This program creates 6502 (or 65c02) code that draws sprites using unrolled loops for each shifted shape. By removing data shifts, image lookups, and loops the images can be drawn much faster than otherwise possible.

Other utilities include generating code for reporting screen damage, a fast bitmap font renderer, and generation for all the row/column lookup tables for each supported bitmap mode.

Installing From Source

The autogenerator code is written in Python and should run on any platform that can use python

Prerequisites

• python 2.7 (but not 3.x yet)

• numpy

• pypng

Credits

The sample font is modified from Michael Pohoreski’s excellent tutorial on Apple II fonts: https://github.com/Michaelangel007/apple2_hgr_font_tutorial

Disclaimer

AsmGen, the 6502 code generator sponsored by the Player/Missile Podcast Copyright (c) 2017 Rob McMullen ([e-mail])

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

Generated Code License

While the code for AsmGen itself is licensed under the GPLv3, the code it produces is licensed under the the Creative Commons Attribution 4.0 International (CC BY 4.0), so you are free to use the generated code for commercial or non-commercial purposes.