Tag: usb
3 posts tagged with "usb".
Reading a Real Cartridge Through a Fake CH340
The console's USB host port met a GBFlash cartridge reader that pretends to be a CH340 serial chip. Three wrong theories, one packet-size discovery, and by the end of the day the firmware read a physical Game Boy cartridge's header and validated it.
A Sawtooth Where the Noise Was
An EMOTIV EPOC headset from 2013, its USB receiver, and no vendor software. Identifying the dongle took minutes. Getting it to emit a single packet took hours and turned out to be a switch. Decrypting the stream took one run once I stopped trusting the documentation and scored every candidate key against real packets.
The drive is not a USB stick
Planning USB floppy support for the console: four transport dialects from 1998, a FAT12 layer nobody ships, and why the first firmware milestone is nothing but reading descriptors.