Macintosh SE ROM Monitor
If you press the interrupt key (closer to the back, the other is reset) on a compact Macintosh, a small window with ">" will appear and you can give commands directly to the 68k monitor in ROM.
There seems to be a lot of potential here - undocumented potential. So far I've found a few novelty commends, but I'd like to know more.
Type the following to get results:
There seems to be a lot to learn from this - Sure we know a lot on how the system works already, but wouldn't it be neat to use this to figure it out as well?
G seems like some kind of graphics command and DM is obviously for Dump Memory. Hoping there is a WM, EM, or any other commands to use, since I'm sure there's all kind of weird and wacky things waiting to be done with this unlimited power we have been granted.
There seems to be a lot of potential here - undocumented potential. So far I've found a few novelty commends, but I'd like to know more.
Type the following to get results:
G 0 AYou will get a bomb error as "Finder" floating point coprocessor not installed.
G 40E118At the safe to turn off the Macintosh screen you will get a different shutdown message.
G 4188A4At the shutdown screen and you will get a small "Stolen from Apple!" Icon at the top left.
DM <address>To display the data in the next 48 memory addresses starting with the address you entered. Every address is 6 hex characters.
There seems to be a lot to learn from this - Sure we know a lot on how the system works already, but wouldn't it be neat to use this to figure it out as well?
G seems like some kind of graphics command and DM is obviously for Dump Memory. Hoping there is a WM, EM, or any other commands to use, since I'm sure there's all kind of weird and wacky things waiting to be done with this unlimited power we have been granted.