I derived a pinout for the old Mac IIfx/IIsi/IIci ROM SIMM from some info found at Gamba's place together with a specsheet for the Atmel chips he used on his custom SIMM. I was unable to find any ROM SIMM pinouts online, though, and I know I've seen them. Does anyone have any pointers so I can double-check my work? I'm also interested in pinouts for any other ROM SIMMs for other Mac models.