; Copyright 2018 faddenSoft. All Rights Reserved.
; See the LICENSE.txt file for distribution terms (Apache 2.0).
;
; Sources:
;  NiftyList, by Dave Lyons
;  What's Where in the Apple, by William F. Luebbert

*SYNOPSIS Symbols from the Apple II monitor ROM

WNDLEFT     @ $20       ;left column of scroll window
WNDWDTH     @ $21       ;width of scroll window
WNDTOP      @ $22       ;top of scroll window
WNDBTM      @ $23       ;bottom of scsroll window
CH          @ $24       ;cursor horizontal displacement
CV          @ $25       ;cursor vertical displacement
GBASL       @ $26       ;base address for lo-res drawing
INVFLAG     @ $32       ;text mask (255=normal, 127=flash, 63=inv)
PROMPT      @ $33       ;prompt character
CSWL        @ $36       ;character output hook (lo)
CSWH        @ $37       ;character output hook (hi)
KSWL        @ $38       ;character input hook (lo)
KSWH        @ $39       ;character input hook (hi)
PCL         @ $3A       ;program counter save
PCH         @ $3B       ;program counter save
A1L         @ $3C       ;general purpose
A1H         @ $3D       ;general purpose

SPDBYT      @ $E7       ;text output speed limiter

BRKV        @ $03f0     ;address of BRK handler
SOFTEVEC    @ $03f2     ;address of RESET handler
PWREDUP     @ $03f4     ;power-up RESET checksum
USRADDR     @ $03F8     ;jump to function that handles monitor Ctrl-Y
NMIVEC      @ $03FB     ;jump to function that handles NMI
IRQADDR     @ $03FE     ;address of IRQ handler

PLOT        @ $F800     ;lo-res plot at X=Y-reg, Y=Acc
PLOT1       @ $F80E     ;lo-res plot at X=Y-reg, Y per GBASL/H
HLINE       @ $F819     ;lo-res horiz line at Y=Acc with X from $2c
VLINE       @ $F828     ;lo-res vert line at X=Y-reg and Y from Acc to $2b
CLRSCR      @ $F832     ;clear lo-res screen to black
CLRTOP      @ $F836     ;clear top part of lo-res screen to black
GBASCALC    @ $F847     ;compute gfx base addr for line in Acc
NXTCOL      @ $F85F     ;change lo-res color to (color)+3
SETCOL      @ $F864     ;set lo-res color to Acc
SCRN        @ $F871     ;load Acc with lo-res value at Y=Acc, X=X-reg
INSDS1_2    @ $F88C
INSDS2      @ $F88E
GET816LEN   @ $F890
INSTDSP     @ $F8D0     ;monitor/mini-asm display
PRNTYX      @ $F940     ;print Y-reg/X-reg as 4 hex digits
PRNTAX      @ $F941     ;print Acc/X-reg as 4 hex digits
PRNTX       @ $F944     ;print X-reg as 2 hex digits
PRBLNK      @ $F948     ;print 3 spaces
PRBL2       @ $F94A
PCADJ       @ $F953     ;monitor/mini-asm PC adjust
TEXT2COPY   @ $F962
OLDIRQ      @ $FA40     ;autostart ROM IRQ handler
BREAK       @ $FA4C
OLDBRK      @ $FA59
RESET       @ $FA62
PWRUP       @ $FAA6
SLOOP       @ $FABA
REGDSP      @ $FAD7     ;display register contents
RTBL        @ $FB19
PREAD       @ $FB1E     ;read paddle specifed by X-reg, return in Y-reg
PREAD4      @ $FB21
INIT        @ $FB2F     ;screen initialization
SETTXT      @ $FB39     ;set screen to text mode
SETGR       @ $FB40     ;set screen to graphics mode
SETWND      @ $FB4B     ;set normal low-res graphics window
SETWND2     @ $FB51
TABV        @ $FB5B     ;place cursor at line (A-reg) and column (ch)
APPLEII     @ $FB60     ;clear screen and put "Apple II" into first line
SETPWRC     @ $FB6F
VIDWAIT     @ $FB78
KBDWAIT     @ $FB88
VERSION     @ $FBB3
ZIDBYTE2    @ $FBBF
ZIDBYTE     @ $FBC0
BASCALC     @ $FBC1     ;calculate text base address
BELL1       @ $FBDD     ;sound bell regardless of output device
BELL1_2     @ $FBE2
BELL2       @ $FBE4     ;sound bell
STORADV     @ $FBF0
ADVANCE     @ $FBF4     ;move cursor right
VIDOUT      @ $FBFD     ;output Acc as text
BS          @ $FC10     ;move cursor left
UP          @ $FC1A     ;move cursor up
VTAB        @ $FC22     ;tab to row specified in Acc
VTABZ       @ $FC24
CLREOP      @ $FC42     ;clear screen from cursor to end of page
HOME        @ $FC58     ;clear screen and reset text output to top-left
CR          @ $FC62     ;perform a carriage return
LF          @ $FC66     ;perform a line feed
SCROLL      @ $FC70     ;scroll up 1 line
CLREOL      @ $FC9C     ;clear to end of line
CLREOLZ     @ $FC9E
WAIT        @ $FCA8     ;delay for (26 + 27*Acc + 5*(Acc*Acc))/2 cycles
NXTA4       @ $FCB4     ;increment A4
NXTA1       @ $FCBA     ;increment A1
HEADR       @ $FCC9     ;write cassette sync
WRTAPE      @ $FCE5     ;casssette write
RDKEY       @ $FD0C     ;read key
FD10        @ $FD10
RDKEY1      @ $FD18
KEYIN       @ $FD1B     ;get next key input from keyboard hardware
RDCHAR      @ $FD35     ;calls RDKEY to get next char
GETLNZ      @ $FD67     ;get a line of input
GETLN       @ $FD6A     ;get a lint of input
GETLN0      @ $FD6C
GETLN1      @ $FD6F
CROUT1      @ $FD8B
CROUT       @ $FD8E     ;print a carriage return
PRA1        @ $FD92     ;print CR, then hex of A1H/A1L, then minus sign
PRBYTE      @ $FDDA     ;print Acc as two-digit hex number
PRHEX       @ $FDE3     ;print right nibble of Acc as single hex digit
COUT        @ $FDED     ;print Acc to output device
COUT1       @ $FDF0
COUTZ       @ $FDF6
IDROUTINE   @ $FE1F
MOVE        @ $FE2C     ;memory move A1/A2 to A4
LIST        @ $FE5E     ;disassemble 20 instructions (not on GS)
SETINV      @ $FE80     ;set video mode to inverse
SETNORM     @ $FE84     ;set video mode to normal
SETKBD      @ $FE89     ;reset char input handler to ROM
INPORT      @ $FE8B
SETVID      @ $FE93     ;reset char output handler to ROM
OUTPORT     @ $FE95
GO          @ $FEB6
WRITE       @ $FECD     ;write data to cassette
READ        @ $FEFD     ;read data from cassette
PRERR       @ $FF2D     ;print "ERR" and sound bell
BELL        @ $FF3A     ;sound bell
RESTORE     @ $FF3F     ;restore 6502 registers from $45-48
SAVE        @ $FF4A     ;save 6502 registers to $45-49
IORTS       @ $FF58     ;JSR here to find out where one is
OLDRST      @ $FF59     ;RESET entry point
MON         @ $FF65     ;normal entry to monitor
MONZ        @ $FF69     ;reset and enter monitor
MONZ2       @ $FF6C
MONZ4       @ $FF70
DIG         @ $FF8A
GETNUM      @ $FFA7
NXTCHR      @ $FFAD     ;part of GETLN input loop
TOSUB       @ $FFBE
ZMODE       @ $FFC7