Friday, July 31, 2026

patching savestates into gb and gbc games

mattcurrie gb save states github

doesn't have every game but still cool
sudo apt install bsdiff on linux
the syntax:
bspatch YOURGAME.gbc OUTPUT.GBC THEPATCH.bsdiff

shell to unzip .7z and .zip and del the compressed


for f in *.7z *.zip; do [ -e "$f" ] && 7z x "$f" && rm "$f"; done

Thursday, July 30, 2026

play wavs on gba with gsm play

gsm player

couldn't get in pogoshell


heres my bash script using sox to convert mp3s to wav and then open the converter


#!/bin/bash

for file in "$@"; do
    output="${file%.*}.wav"
    sox "$file" -r 22050 -c 1 -e gsm-full-rate "$output"
    wine "ps2gsm_linker.exe"
done

gba multi cart and mod files made easy with pogoshell

Pogoshell loaded up some of Randall's sick jungle protracker mods

Wednesday, July 29, 2026

nes music on gbc

player for .nsf files on gbc

nsf player

got it working on linux using wine
deflemask nes exports arent working but nsfs from games work
makes gbc roms out of the music files

2 tools for making gbc and gba multicarts

for gbc 108 in 1 cards gba multimenu for 369IN1 gba cards

Fl studio to hardware chiptune - midi2dmf sms vgm and gb vgb

i use yamaha syxgx vst on master bus in fl set to midi recieve chan 2
put reaper jsfx midi filter to raise it by 2 octaves for sms
lowest note on sms is a0 in fl studio(oct 1 in deflemask)
lowest note on gameboy is c2 in fl studio (oct3 in deflemask
for gameboy ch 4 noise:
c6 is good for a hat
c5 is good for a snare
effect 08 is panning: 10 L 01 R
effect 10 selects wave of chan 3
effect 12 is duty cycle 00, 01, 02, 03
sweeping is only for pulse channel 1
13 sets sweep 14 00 sweeps up 14 01 sweeps down (a non zero value)
open the deflemask gb proj in furnace to save as

midi2dmf fur2uge gbavgmplayer sms advance

if you make a sms song in defle
- save as sms rom and play on gba in sms emulator
- export a 4 chan sms psg vgm and make a .gba rom
Another way is to just use .mod files
fl to midi to openmpt

pokemon ruby on the mother3 gba cart settings

in the patcher I used:
savetype
offspec 512k / 1m flash (for carts with a non standard flash chip)
enabled fake RTC
in flash gbx:
savetype: 512k FLASH (64kib)
dont need to keep the original rom like castlevania did, instead use the patched rom for everything
patched rom can load the saves. the original wont recognize the saves.
It says the last save was corrupted each time but it works fine

Monday, July 27, 2026

stepper gba

stepper bad diode's sequencer

got gba mother3 cart to hold saves with lesserkuma's web patcher tool

save patcher github

seting the save type to Off-spec 512K/1M FLASH worked for me.1m flash(128kb) also worked.
when saving the screen hangs for a bit, looks frozen but the saves work.

dumping the gba cart back to the computer i couldn't save in mgba in castlevania. the fix: use the unpatched rom with the 1m flash (128kb) save backup. fixing saving on the mother3 cart breaks being able to save in the emulators everywhere else so just copy the save and use that with the original rom

risa nes tracker can run in the browser

risa ntsc in the browser.

can manage saves too

building master system chiptunes onto a gba cart

gbavgm player

you can make .vgm files in deflemask for sega master system and use this to make a gba rom
the sn76489 psg sounds only work not the fm stuff

Saturday, July 25, 2026

fixing gba flashcarts not being able to save

gbata on github gba flashing repo guide on yt

the mother3 cart i got flashes fine but wont save from within making goomba multicart of lsdj basically useless for now until I fix that battery issue

making gb multicarts for gba with goomba color

this fixes that problem of deflemask exporting single .gb songs and only being able to load 1 song onto a gbc cart. also great using multiple lsdjs with save states. had to use windows vm though it wouldnt build the roms in wine on linux for me.

goomba color

dumping a gba rom by crashing it

dumping a rom by crashing it wild

Friday, July 24, 2026

Thursday, July 23, 2026

visual novel style gb carts

gb studio gallery - robert doman youtube tutorial on making art carts. how to swap tiles for page numbers in gb studio

Saturday, July 18, 2026

gbs master another music rom builder for gb

gbs master github

vmp mod player for gba

got it working in wine


wine cmd /c makeVMP.cmd

it runs in wine ok by opening up in dosbox? whatever it works.


way easier than my other method just drop the files in and run the command to build a rom

vmp 1.1 on gbadev.org