This message was posted by VBboy, posted on December 19, 2001 at 14:38:25 coming from 63.124.241 I am a big Virtual Boy fan. I recently began programming it but I really want to test my code on the real hardware. There is a rewritable cart schematic, but it requires an EPROM and all that messy equipment that goes along with it. How hard would it be to make an card programmable from a PC parallel port using flash rom or SRAM? Here are some schematics of VB carts. http://dana.ucc.nau.edu/~dbt/VBDiagrams.html