;; Zero Page

;; ZX02 addresses

ZP=$00

offset          = ZP+0
ZX0_src         = ZP+2
ZX0_dst         = ZP+4
bitr            = ZP+6
pntr            = ZP+7



;; Zero page monitor routines addresses

WNDLFT	= $20
WNDWDTH	= $21
WNDTOP	= $22
WNDBTM	= $23
CH	= $24
CV	= $25
GBASL	= $26
GBASH	= $27
BASL	= $28
BASH	= $29
H2	= $2C
X_LEFT	= $2C
V2	= $2D
MASK	= $2E
COLOR_MASK = $2F
COLOR	= $30

SEEDL	= $4e
SEEDH	= $4f
XMAX	= $50



; MIST zero page addresses

FRAMEL			= $60
FRAMEH			= $61
;CURSOR_X		= $62
;CURSOR_Y		= $63
XPOS			= $64
YPOS			= $65
LOCATION_STRUCT_L	= $66
LOCATION_STRUCT_H	= $67
IN_SPECIAL		= $68
CURSOR_VISIBLE		= $69
IN_LEFT			= $6A
IN_RIGHT		= $6B
BTC_L			= $6C
BTC_H			= $6D

; pt3 player registers
REGISTER_DUMP   = $70
AY_REGISTERS    = $70
A_FINE_TONE     = $70
A_COARSE_TONE   = $71
B_FINE_TONE     = $72
B_COARSE_TONE   = $73
C_FINE_TONE     = $74
C_COARSE_TONE   = $75
NOISE           = $76
ENABLE          = $77
PT3_MIXER_VAL   = $77
A_VOLUME        = $78
B_VOLUME        = $79
C_VOLUME        = $7A
ENVELOPE_FINE   = $7B
ENVELOPE_COARSE = $7C
ENVELOPE_SHAPE  = $7D
COPY_OFFSET     = $7E
DECODER_STATE   = $7F

PATTERN_L       = $7E
PATTERN_H       = $7F


; note 70-7f also used by disk code

; note: rest are up at $f0

; We have to save/restore the following values
; when loading/storing from disk

WHICH_LOAD		= $80		; which file to load

DIRECTION		= $81
	DIRECTION_N = $1
	DIRECTION_S = $2
	DIRECTION_E = $4
	DIRECTION_W = $8
	DIRECTION_ANY=$f
	DIRECTION_ONLY_POINT = $40	; do not change pointer to grab
	DIRECTION_SPLIT = $80		; split text/graphics

LOCATION		= $82

HOLDING_PAGE		= $90
	HOLDING_RED_PAGE        = $80
	HOLDING_BLUE_PAGE       = $40
	HOLDING_WHITE_PAGE      = $C0
HOLDING_ITEM            = $91
        HOLDING_KEY             = $04
        HOLDING_LIT_MATCH       = $02
        HOLDING_MATCH           = $01



CURSOR_X		= $BC
CURSOR_Y		= $BD
UPDATE_POINTER		= $BE

APPLEII_MODEL	=	$D8
HGR_PAGE	=	$D9
WHICH_SLOT	=	$DA
JS_BUTTON_STATE	=	$DB
CURRENT_DISK	=	$DC
JOYSTICK_ENABLED=	$DD
SOUND_STATUS	=	$DE
	SOUND_DISABLED	= $80
	SOUND_IN_LC	= $01 ; $01 sound effects in language card
	SOUND_MOCKINGBOARD = $02 ; mockingboard detected

SCENE_COUNT	=	$DF
ANIMATE_FRAME	=	$E0
LEVEL_OVER	=	$E1
	GAME_OVER	=	$FF
	TOUCHED_ENEMY	=	$80
	NEXT_LEVEL	=	$01
LOCATIONS_L	=	$E2
LOCATIONS_H	=	$E3

; temp var per-world define
LONG_FRAME	=	$E4	; nibel
CURRENT_DISPLAY	=	$E4	; selena
LAST_PLAYED	=	$E4	; selena

STAR_CYCLE	=	$E5

DISP_PAGE	=	$ED	; ALL
DRAW_PAGE	=	$EE	; ALL

WHICH_OVERLAY	=	$F8
TEMP		=	$F9
;TEMPY		=	$FB
MASKL		=	$FA
MASKH		=	$FB
INL		=	$FC
INH		=	$FD
OUTL		=	$FE
OUTH		=	$FF

; read any file slot 6 version
; based on FASTLD6 and RTS copyright (c) Peter Ferrie 2011-2013,2018

; modified to assemble with ca65 -- vmw
; added code to patch it to run from current disk slot -- vmw


        adrlo   =       $26     ; constant from boot prom
        adrhi   =       $27     ; constant from boot prom
        tmpsec  =       $3c     ; constant from boot prom
        reqsec  =       $3d     ; constant from boot prom
        sizelo  =       $44
        sizehi  =       $45
        secsize =       $46

        ldsizel =       $70
        ldsizeh =       $71
        namlo   =       $7b
        namhi   =       $7c
        step    =       $7d     ; state for stepper motor
        tmptrk  =       $7e     ; temporary copy of current track
        phase   =       $7f     ; current phase for /seek