about modifying when using the monitor?
It is important to keep in mind that you can do all sorts of nasty things to the computer if you play around in the monitor and don’t know where things are located in memory. The safest bet if you want to have a play would be to start the computer with no disk in the drive, then get into the monitor. Don’t play around with the following memory areas at all (unless you know exactly what you are doing): 0020-004F Zero page memory area used by the monitor 0100-01FF Stack 0200-02FF Input buffer 03D0-03FF System vectors C000-C0FF I/O space. Don’t even read memory in this area unless you know what you are doing. C100-C7FF I/O firmware (usually ROM on cards in slots, or emulated slots). Some I/O cards may have I/O ports in this area (but not for the IIc). C800-CFFF Bank-switched area used by I/O cards. It is safe to read this area in the IIc, but it has to be handled carefully in other machines. The following areas must be handled carefully to avoid problems: 0050-00FF Zero page memory area u
