60113



60113 ($EAD1) ISRTD; is the serial output complete IRQ vector.
This is at 60111 ($EACF) in the new OS ROMs.

60177 ($EB11) ISRSIR; is the serial input ready IRQ vector. This
is 60175 ($EB0F) in the new OS ROMs.

60292 ($EB84) CASENT; is the start of the cassette handling code
SIO subroutine to set baud rate, tone values, inter-record gap, to load
the buffer from the cassette and to turn on the recorder motor. Write
routines are located in 61249 to 61666 ($EFF5 to $F0E2).

60515 ($EC63) is the start of the disable POKEY interrupts routine
entry, which also disables the send and receive functions.

60583 ($ECA7) COMPUT; is the subroutine to calculate baud
rate using the POKEY frequency registers and the VCOUNT timer.
The tables for the AUDF and VCOUNT values are between 60882 and
60905 ($EDD2 and $EDE9).

60906-61047    EDEA-EE77      DSKORG
Routines for the disk handler.
Initialization is at DINIT, 60906 ($EDEA), entry is at DSKIF, 60912
($EDF0).

61048-61248    EE78-EF40      PRNORG
Routines for the printer handler.

61249-61666    EF41-F0E2      CASORG
Routines for the cassette handler.

The buzz used in the cassette CLOAD command can be called up from
BASIC by:

BUZZ = USR(61530).

You can turn it off with the RESET key. While this isn't terribly
exciting, it points to the potential of using the console speaker for
sound instead of merely for beeps (the RAM location for the speaker is
at 53279; $D01F). See the speaker location and COMPUTE!, August
1981, for a short routine to use the speaker for sound effects.

61667-62435    F0E3-F3E3      MONORG
Routines for the monitor handler. This is also the address area of
PWRUP, the powerup module (61733; $F125). Coldstart routines are
initialized to this location. The routine to check for cartridge
installation begins at 61845 ($F195). Hardware initialization begins at
62081 ($F281).

61723 ($F11B) RESET; the RESET button routine starts here.

62081 ($F281) HARDI, the start of the hardware initialization
routines.