Get the latest tech news
Oya, I've heard of mega-ROMs
Design and construction of an MSX multi-game cartridge. Explains the MSX slot mapping scheme.
Things made more sense once I talked to bsittler, who has had a long history tinkering with the MSX and features a near-infinite amount of patience for my dumb questions. Through the magic of datasheets and the continuity test, I determined that the FlashMegaROM cartridge is in fact pulling the segmented lines (all the high address outputs from the ‘670s) low! I did a quick check to make sure the game was bootable, then spent thirty minutes digging out my AV capture/splitter rig and its hydra of cables and messing with OBS to record a short clip.
Or read this on Hacker News