PICOCHIP

Sat, 25 Mar 2023 21:36:18 UTC

	[64x8]

A complete implementation of the CHIP-8 Architecture on PICO-8.

The CHIP-8 architecture was designed to allow making simple video games portably, in the mid-1970s, and has since seen implementations on just about every platform known to man.

Options available from the pause menu:

Buttons fully rebindable to match standard PICO-8 controls, but can also be changed to Devkit mode to operate it with standard keyboard controls (& mouse).
Cycles per frame adjustable, CPU usage becomes visible if it gets too high so you know what the limits are.

Comes with several demo cartridges from the CHIP-8 Archive, but you can use any CHIP-8 cartridge with it by simply dragging it into an exported build (does not appear to work on the BBS, unfortunately)

If you own a local copy of PICO-8, you can also use my debugging features by simply step debugging with . as usual.

SCHIP and XO-CHIP support coming eventually. Maybe.

Exported builds (click):

Port of PICO-8 Celeste to Retro Gadgets

Wed, 14 Dec 2022 20:51:33 UTC

Port of PICO-8 Celeste to Retro Gadgets

Retro Gadgets is a video game about building all sorts of retro-styled devices with all the clicky buttons and other goodies, and I noticed two things:

The screens have a square aspect ratio
The CPUs are programmed with Lua

Commence bad idea.

After a week or so of borderline masochism, I managed to port PICO-8 Celeste to Retro Gadgets using the original Lua code, spritesheets, music and sound data, along with writing some quick scripts to do syntax conversion from PICO-8 Lua to standard Lua, and to get the map and flag data out.

The entire game is beatable from start to finish, and functions identically to the PICO-8 version apart from minor visual quirks.

Retro Gadgets: https://store.steampowered.com/app/1730260/Retro_Gadgets/
My Celeste gadget for Retro Gadgets: https://steamcommunity.com/sharedfiles/filedetails/?id=2899096562

Technical details:

Partial reimplementation of the PICO-8 API (only the bare minimum Celeste requires)
Some quick bodging was done to get around Retro Gadgets' lack of sprite flipping and palette swapping
Every sound effect and music track was rendered to a wav file, which is why the workshop file is so large

Pictures:

Title screen

First level

Front of board

Back of board, showing the components

darkerbit [Lexaloffle Blog Feed]

PICOCHIP

Port of PICO-8 Celeste to Retro Gadgets

Port of PICO-8 Celeste to Retro Gadgets