Here's a Super Game Boy enhancement driver I need to finish some day. It uses a circular buffer in VRAM to communicate with the SNES at 60fps via a combination of command data and per-frame data, rather than joypad packets. This particular version allowed a Game Boy game to reuse Game Boy Color art.

Getting back into snesdev with a new side project, an spc700 assembler. This assembler will make compiling Terrific Audio Driver a lot easier. I'm off to a good start, it can currently assemble a single instruction inside unit tests. #snesdev

New blog post: A wordy overview and retrospective on the homebrew SNES game engine I used for my 2025 SNESDEV game jam submission. undisbeliever.net/blog/2026021... #snesdev

Happy New Year, everybody :-) Following the success of last year's Game Jam, there will be another SNESDEV Game Jam in the summer of 2026. SNES homebrewers, get ready and prepare your tools for the next round! itch.io/jam/snes-dev... #snesdev2026, #gamedev, #gamejam, #homebrew

Announcing v0.2.0 of my homebrew SNES audio driver. This release stabilises the 2 breaking changes I made to the audio driver months ago (in the beta releases). It also fixes a lot of small bugs and items I had on my ever growing todo list. github.com/undisbelieve... #snesdev #spc700

PVSnesLib 4.5 is now available! Thanks to the community for the help. You can download it here: github.com/alekmaul/pvs... #retrogaming #snes #pvsneslib #homebrew #indiedev

I have released a 2nd beta of my SNES audio driver. It adds transpose analysis to the compiler to detect all out-of-range notes caused by driver transpose. I've also rewritten the timer code to increase the max bytecode sleep duration to 65535 ticks. github.com/undisbelieve... #snesdev #spc700

A new SNES soundtrack work of mine in development, game developed by @kannagichan.bsky.social ... www.youtube.com/watch?v=P3mX... #snesdev #indiedev #snes #sfc #スーパーファミコン #スーファミ

I have released a new public beta build of my SNES homebrew audio driver. github.com/undisbelieve... This beta moves `_` and `__` transpose MML commands out of the MML compiler and into the audio driver, so the semitone offset will affect loops and subroutines. #snesdev #spc700

I've added a transpose setting to my SNES audio driver. Subroutines and loops can now be played with different semitone offsets. Bytecode assembly only, the MML compiler changes have not been coded yet. #snesdev #spc700

Extending my Furnace to Terrific Audio Driver project so that it can also accept Impulse Tracker files wasn't too difficult, though there's still work to do and everything needs to be tested. Internally it converts the file to Furnace-style representation and then converts again to MML.

Here's my #SNES mouse-controlled shooter game so far! It's definitely far from being 100% done, but it's in a state where I feel comfortable showing it off and having people try it out! Multiplayer and regular controllers are supported. forums.nesdev.org/viewtopic.ph... #gamedev #snesdev #homebrew

My entry in the 2025 SNESDEV game jam is complete. undisbeliever.itch.io/space-rescue... #snesdev #snes

Here's an upcoming #SNES beat'em up that might be worth keeping on you radar: "Triple Impact" By DigiFox It's still somewhat early in development but so far it's already looking really atmospheric with some solid sprite work. #retro #homebrew #indiedev #retrodev #SNESDev #gaming #retrogaming

Today I drew the player sprite in safety orange. The deadline for the game jam is going to be tight (5 days to go). #snesdev

Added two enemies that shoot projectiles to my game. The only enemy left to code is the boss. #snesdev

Yesterday I finished a playtest build of my SNES game I'm one step closer to releasing a game. Lots of stuff I've got to do in 2 weeks: Enemy projectiles, enemy graphics, boss, title screen, game over screen, pause screen, credits, and more levels. #snesdev

SNESdev daily log 1: Finished drawing the tileset. I ran out of time (if I'm to meet my self-imposed deadlines) but this is a good place to stop. I wasn't able to come up with a left/right wall design, it's just a 2px black border. (Pink is transparent and dark-magenta are unused tiles).

SNESdev daily log 1: Coded a security bot enemy. Coded an enemy that jumps towards the player.

#snesdev daily log 2 - 9: - Added player projectiles, a melee attack and multiple gravity constants. - Added room transitions, d-pad activated (up press) script triggers and doors. - Played SMB2 (SNES) for inspiration. - Reviewed and rewrote the game's todo list. - Added semitransparent water.

Sorry for the lack of updates. I've been without Internet for the last week and do not know when it will be fixed. On the plus side - I have been documenting and re-analysing my automatic joypad tests (1 or 2 a day) instead of watching YouTube.

I really wanted my small SNES game to have smarter pathfinding than just moving randomly or just using atan2. I looked at some 90s game dev magazines for advice but it looks like Dijkstra maps work great and let me reuse work across many enemies if I want. #gamedev #snesdev #homebrew

SNESdev daily log 1: Found the motivation to overcome my procrastination. Added a player melee attack to the game.

You can get the ROM at supermidipak.itch.io/super-midi-p...

No snesdev last night. I got overwhelmed by the amount of stuff I have to do over the next two months. Time to reset the snesdev daily log counter.

Recently on my small #SNES mouse game, I've been working on implementing enemies, and I have a whole bunch of silly ideas. Now it feels significantly more game-like (though I still need to implement player/enemy collision so there's actual risk). #gamedev #snesdev #homebrew

SNESdev daily log 5 & 6 & 7: Added anti-gravity to the base enemy. Coded an enemy that avoids ledges.

SNESdev daily log 4: Coded a very basic enemy that turns around when it touches a wall.

SNESdev daily log 3: Added ladders to the game #snesdev

SNESdev daily log 2: Sketched a few level designs in a sketchbook. Converted hard-coded constants into a structure of arrays table so walk and run have different movement values.

SNESdev daily log 1: - Panicked about my lack of progress in my snesdev game jam game - Brainstormed and sketched the enemies I want in my game (instead of keeping them locked up in my head)

Dusting off the #SNES baseball engine. cleaned up the mess of code it once was and now I can add more stuff hoping to get a little demo put together for the snesdev jam going on

I've published version 0.1.1 of my homebrew SNES audio driver github.com/undisbelieve... This release adds: * An optional delay to vibrato * A way to key-on a note without key-off * A broken chord can now be slurred #snesdev #spc700

I have the very start of a converter written that takes a Furnace SNES file and converts it to a file that Terrific Audio Driver can take. I'm finding that there's definitely some additional complications that I didn't have with ft2pently, and I'm not sure exactly how good it's possible to get.

Demo with the level: Night City! #snes #sfc #snesdev #shmup #superdan #homebrew

This time we got a music post + #rexnobilis update twofer: here's a sneak peek at the 100% homegrown music engine and a WIP of one of the boss tunes for my SNES bullet hell Rex Nobilis! #screenshotsaturday #indiedev #snes #スーパーファミコン #スーファミ

After a long break I'm getting back into snesdev. This weeks goals: * Work on my website and/or the wiki every day * Prototype a ledges + jumping movement system for unnamed-snes-game * Study and learn my old untech game engine * Add a search bar to the audio driver GUI

I wrote a blog post about the smpspeed tests I did for @tas.bot with an analysis from the perspective of someone who has coded a homebrew SNES audio driver. undisbeliever.net/blog/2025031... #snes #snesdev

Based on 143 responses, the SNES DSP rate averages 32,076 Hz, rising 8 Hz from cold to warm. Warm DSP rates go from 31,965 to 32,182 Hz, a 217 Hz range. Therefore, temperature is less significant. Why? How does it affect games? We do not know. Yet. See docs.getgrist.com/fpwWkqDcnxXR... for more.

SNESdev daily log 8: Improved the smpspeed reading script.

SNESdev daily log 7: Sketched out a design for adding ledges to unnamed-snes-game. Measured the S-SMP clock on 3 of my Super Famicom consoles.

SNESdev daily log 6: Wrote a python script that uses usb2snes to extract the smpspeed test results out of the VRAM tilemap and into a csv file (while the console is running). Recorded and graphed my PAL console's S-SMP (audio CPU) clock over 2 hours.

I have released v0.1.0 of homebrew SNES audio driver. This release adds new echo instructions to audio driver, left/right channel invert and cleans up the 65816 API. github.com/undisbelieve... #snesdev #spc700

SNESdev daily log 5: Lots of little changes and fixes to the audio driver. Stabilized the Terrific Audio Driver MML and bytecode assembly syntax and behavior.

SNESdev daily log 3 & 4: Proofreading audio driver code and documentation for the upcoming v0.1.0 release. Ran the smpspeed test on 3 of my consoles for TASBot.

SNES consoles seem to be getting faster as they age. Help us collect data. Do you have an SNES and a flash cart? Run the smpspeed ROM test from lidnariq on your console. Post your results on this TASBot Nextcloud form: nextcloud.tas.bot/index.php/ap...

SNESdev daily log 2: Added manual seeking to the audio driver state window. Added `(` decrement volume and `)` increment volume MML commands.

SNESdev daily log 1: Finished the audio driver state window.

SNESdev daily log 3: Started the audio driver state window.

SNESdev daily log 2: Played around with the rust movement prototype to improve player physics. I've decided to add separate deceleration values when the player requests movement and when the player releases the D-Pad. This will make jumping, running and ice-physics more interesting.