Rst#18

[Ast]

Who can tell me how to use rst#18 with parameters?
What I know is :

Code Select Expand


...
               rst #18
               defw adress
adress     defw xxxx      ; adress you want to call
              defb yy          ; number of rom
...


But if i wanted call somewhere which needs parameters, how could i do ?

[pelrun]

RST #18 preserves all the registers, so just set them up as required by the called routine beforehand (e.g. if it uses RSX calling convention, set A to number of parameters, and IX to the pointer to the parameter table).

[Ast]

Thanks for your advices...