AppleIIAsm-Collection/disks/disk4_arrays/T.REQUIRED.HOOKS
nathanriggs 875dd80998 stdio 0.2.0 updates
- fixed a bunch of bugs
- separated common and stdio libraries
- commenting upgrades
- created min versions of each library
2018-12-14 21:23:32 -05:00

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*
*``````````````````````````````*
* DECLARATIONS.PUT *
*- -*
* USED IN CONJUNCTION WITH *
* OTHER PUT FILES. DEFINES *
* BASIC DECLARATIONS USED *
* ACROSS DIFFERENT ROUTINES *
*,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,*
*
** ADDRESS STORAGE LOCATIONS FOR
** INDIRECT ADDRESSING.
*
ADDR1 EQU $06
ADDR2 EQU $08
ADDR3 EQU $EB
ADDR4 EQU $ED
*
** SCRATCHPAD ZERO PAGE LOCATIONS AND
** DEDICATED ZERO PAGE ADDRESS TO HOLD
** A RETURN ADDRESS PASSED VIA THE STACK
*
SCRATCH EQU $19
SCRATCH2 EQU $1E
RETADR EQU $FE
*
** ZERO PAGE ADDRESSES DEDICATED TO PASSING
** BACK RESULTS WHEN THERE ARE MORE THAN
** THREE BYTES BEING PASSED (AXY) AND THE
** USE OF THE STACK IS IMPRACTICAL OR TOO SLOW
*
RESULT EQU $FA
RESULT2 EQU $FC
*
** VARIOUS HOOKS USED BY ALL ROUTINES
*
REENTRY EQU $3D0
*
** ERROR HANDLING MEMORY LOCATIONS
*
** THIS DESIGNATES A 16-BYTE BLOCK OF MEMORY
** THAT HOLDS DATA RELATED TO IDENTIFYING
** RUNTIME VALUES FOR DEBUGGING.
*
ERRLOC EQU $0C00
*