Apple II User Manual

User Modifications:

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You may wish to add some of your own instructions to this implementation of

SWEET 16. If you use the unassigned opcodes $0E and $0F, remember that

SWEET 16 treats these as 2-byte instructions. You may wish to handle the

break instruction as a SWEET 16 call, saving two bytes of code each time

you transfer into SWEET 16 mode. Or you may wish to use the SWEET 16

BK (break) op as a 'CHAROUT' call in the interrupt handler. You can perform

absolute jumps within SWEET 16 by loading the ACC (R0) with the address

you wish to jump to (minus 1) and executing a ST R15 instruction.