Generic BMP

Welcome to the page of Generic BMP! Generic BMP is a little tool that converts 8-bit and truecolour BMP files into various Atari ST/STe/TT/Falcon and Amiga screen and register formats. For example, if you want a truecolour BMP into ST 9-bit truecoluor format, look no further. Or why not convert a Grafx2 ST-fullscreen picture into ST bitplanes and palette? We got that covered too. Features Convert 8-bit BMP files to raw bitplanes with or without palette, 1 to 8 bitplanes. Convert palette or entire 8/24-bit BMP pictures into palette register formats or Falcon truecolour. Strip 8-bit BMP from headers, palette and paddings to save a RAW 8-bit dump, for textures and the likes. Strip one colour channel from 24-bit BMP files to store 8:8 ofsmap tables. Convert 8-bit BMP files with only 16 colours into nibble chunky. Supports bitplane formats of ST/STe, TT/Falcon and Amiga. Supports palette/truecolour formats of ST, STe/TT, Falcon palette, Falcon truecolour, Amiga OCS/ECS, Amiga AGA. Programmed entierly in 68000 assembler, ensures that we have many bugs! Works on plain ST up to Falcon 060. Backstory Over the years I've made dozens, well probably up to the hundreds of small sources that convert a picture of a specific size and format into something suitable for the Atari. One source for each texture, logo, image and what not for dozens and dozens of demos. Then a sunny day about seven years ago (around 2018) I thought it might be worthwhile to invest time into a more generic tool that would solve 99% of the conversions I need. Said and done, Generic BMP was made and it has indeed saved me a lot of time. I've added features as I needed them, and it's now been "stable" at the current feature set for a couple of years, so it's probably a finished program. So I've been thinking of releasing the tool for a bunch of years, but it never happened. Then at the GERP party cG/DHS suggested that we make a fantasy cracktro for the the Buxton bytes party. Here I saw the chance of getting the tool out once and for all. So we did a "cracktro" for the tool and also got some free advertizing! FAQ Q: How to I request a new feature? A: We don't take feature requests for this tool. Q: Are there bugs? A: Most certainly. Q: Is everything tested? A: Not the Amiga AGA palette output, that's such a weird thing they created there. Q: Is the sourcecode available? A: Not right now, but might end up on Github later. Credits Main program  - Anders Eriksson (Evil/DHS) c2p routine  - Mikael Kalms (Kalms/TBL) divu.l math routine  - From utility.library on Amiga, unknown coder Download Download Generic BMP v1.0

Last updated: March 29, 2025 Anders Eriksson (ae@dhs.nu)