Quadra800rom Work Page

for a smooth, high-performance vintage Mac experience. However, if you are looking to use

Some early revisions of the Quadra 800 ROM (version $7F ) have a bug in the Memory Manager’s RAM sizing routine. If more than 128 MB of RAM is installed (theoretical max 256 MB), the ROM incorrectly initializes the memory controller, leading to system hangs at boot or only 64 MB recognized. quadra800rom work

: Unlike the Mac IIci, which often suffers from "jerky" mouse controls in emulators, the Quadra 800 ROM in for a smooth, high-performance vintage Mac experience

: Because of this ROM-level optimization, the Quadra 800 could outperform the more expensive Quadra 950 despite using the same 33 MHz 68040 processor. Additional ROM-Enabled Features Bootable CD-ROM Support : Unlike the Mac IIci, which often suffers

Marcus quietly posted the fix to comp.sys.mac.hardware. It spread via floppy disk from technician to technician. Apple never officially acknowledged the bug—they had moved to Power Macs by then. But in the niche world of vintage Mac collectors, the became legend.