Quote:
Originally Posted by phx
Meynaf has probably more Atari exprience than me, but I seem to remember that the hardware mirrors the (first?) 8 bytes of the ROM at address 0, so the CPU find its reset vector there when switched on. So you cannot write to it.
|
There is more to it. Atari, unlike Amiga, does check the function codes for some memory regions, and chances are that the lower addresses are not writable (nor readable) for user function codes. At least the ST hardware was not user-visible, a bus error would result in any attempt to access them from user level.