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Retro articles

All Musclog blog posts filed under Retro.

August 17, 2026Retro

Breaking my data out of a Game Boy cartridge

I logged a few weeks of food on a 1998 cartridge and then realised it was stuck in there for life. So the Game Boy now beams its save into my phone as a stream of fountain-coded QR codes — no cable, no network, no handshake.

Game BoyGBDKCQR CodesRetroHomebrewOptical Transfer

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August 1, 2026Retro

Creating a calorie tracker for the Game Boy Color

I put Musclog on a 1998 cartridge — 517 foods in ROM, macro goals packed into 23 bytes of battery-backed SRAM, charts drawn with background tiles, and 291 free bytes in the one bank that cannot be paged out.

Game BoyGBDKCRetroHomebrewNutritionWasmBoy

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