; Copyright 2018 faddenSoft. All Rights Reserved.
; See the LICENSE.txt file for distribution terms (Apache 2.0).
;
; Source: Beneath Apple DOS

*SYNOPSIS DOS 3.3 public addresses and constants.

DOS_WRM         @ $03d0     ;DOS warmstart entry point
DOS_CLD         @ $03d3     ;DOS coldstart entry point
DOS_FM          @ $03d6     ;DOS file manager entry point
DOS_RWTS        @ $03d9     ;RWTS entry point
DOS_LOCFPL      @ $03dc     ;loads Y/A with address of FM param list
DOS_LOCRPL      @ $03e3     ;loads Y/A with address of RWTS IOB
DOS_CHARIO      @ $03ea     ;jumps to routine that connects DOS KSW/CSW

; I/O scratchpad RAM addresses
; See Apple II Reference Manual table 26 (page 83)
DOS_BOOT_SLOT   @ $05f8     ;disk controller boot slot

DOS_FILE_LENGTH @ $aa60 2   ;range length for LOAD and BLOAD
DOS_FILE_ADDRESS @ $aa72 2  ;address of last file loaded

RWTS_ENTRY      @ $b7b5     ;disable interrupts and call RWTS

RWTS_PARAM_BLOCK @ $b7e8    ;RWTS parameter block
RWTS_TABLE_TYPE @ $b7e8     ;table type, must be $01
RWTS_SLOT_NUM   @ $b7e9     ;slot number times 16
RWTS_DRIVE_NUM  @ $b7ea     ;drive number (1 or 2)
RWTS_VOL_EXP    @ $b7eb     ;volume number expected (0 matches all)
RWTS_TRACK_NUM  @ $b7ec     ;track number (0 - 34)
RWTS_SECTOR_NUM @ $b7ed     ;sector number (0-15)
RWTS_DCT        @ $b7ee 2   ;pointer to Device Characteristics Table
RWTS_BUF        @ $b7f0 2   ;pointer to data buffer for READ/WRITE
;RWTS_UNUSED    @ $b7f2
RWTS_PARTIAL_COUNT @ $b7f3  ;byte count for partial sector
RWTS_CMD_CODE   @ $b7f4     ;0=seek, 1=read, 2=write, 4=format
RWTS_ERR_CODE   @ $b7f5     ;err code (when carry set)
; $10=write protected, $20=volume mismatch, $40=drive error, $08=INIT error
RWTS_VOL_FOUND  @ $b7f6     ;volume number found
RWTS_SLOT_FOUND @ $b7f7     ;slot number found
RWTS_DRIVE_FOUND @ $b7f8    ;drive number found