Command line arguments can be passed to
main() after BLOAD. Since this is not
supported by BASIC, the following syntax was chosen:
]CALL2051:REM ARG1 " ARG2 IS QUOTED" ARG3 "" ARG5
mainis the program name.
These are defined to be OpenApple + number key.
The runtime for the enhanced Apple //e uses routines marked as
interruptor for ProDOS 8 interrupt handlers. Such routines must be
written as simple machine language subroutines and will be called automatically
by the interrupt handler code when they are linked into a program. See the
discussion of the
.CONDES feature in the
dio_open() has the single parameter
drive_id to identify the drive to be opened. Therefore an Apple II
slot and drive pair is mapped to that
drive_id according to the formula
drive_id = (slot * 2) + (drive - 1)
so that for example slot 6 drive 1 is mapped to
The function dio_open() succeeds only if a formatted disk is present in the drive. However intentionally no check is performed on the presence of a ProDOS 8 disk. Therefore access to all standard 16-sector disks (as for instance DOS 3.3) is possible.