apm279l@vaxc.cc.monash.edu.au (10/16/90)
Hi, (1) does anybody know the location in ROM of the RPL interpreter for the '28S? ie the routine which takes keypad input when not running user-programmes? (2) I've found that the location C00EC changes as you use the machine and I've got a hunch it is used to store status info. Anyone know anything about that? (3) I was wondering how interrupts work - all I know so far is that keyboard interrupts can be disabled/enabled with intoff/inton and that an interrupt vector is at the top of the RTN stack. However, I imagine the Saturn handles at least 3 interrupts (ON, RESET, MEMORY RESET), or does the one interrupt routine do all three? Thanx, Peter APM279L@VAXC.CC.MONASH.EDU.AU