Quadra800rom Work ~upd~ Jun 2026

To get the Macintosh Quadra 800 ROM working for emulation (such as in Basilisk II

A ROM alone is not enough to boot. To successfully start a Quadra 800 environment, you need: PRAM Image: A 256-byte file (often named pram-q800.img ) to store settings like resolution and startup disk. Hard Disk Image: quadra800rom work

Desperate, he pulled the ROM SIMM and dumped it with a programmer. While disassembling the boot blocks, he found the address-swap error. But the ROM was mask ROM—unfixable without a new motherboard revision. To get the Macintosh Quadra 800 ROM working