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148 lines
6.0 KiB
Plaintext
148 lines
6.0 KiB
Plaintext
; Copyright 2018 faddenSoft. All Rights Reserved.
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; See the LICENSE.txt file for distribution terms (Apache 2.0).
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;
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; Sources:
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; NiftyList, by Dave Lyons
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; What's Where in the Apple, by William F. Luebbert
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*SYNOPSIS Symbols from the Apple II monitor ROM
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WNDLEFT @ $20 ;left column of scroll window
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WNDWDTH @ $21 ;width of scroll window
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WNDTOP @ $22 ;top of scroll window
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WNDBTM @ $23 ;bottom of scsroll window
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CH @ $24 ;cursor horizontal displacement
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CV @ $25 ;cursor vertical displacement
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GBASL @ $26 ;base address for lo-res drawing
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INVFLAG @ $32 ;text mask (255=normal, 127=flash, 63=inv)
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PROMPT @ $33 ;prompt character
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CSWL @ $36 ;character output hook (lo)
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CSWH @ $37 ;character output hook (hi)
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KSWL @ $38 ;character input hook (lo)
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KSWH @ $39 ;character input hook (hi)
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PCL @ $3A ;program counter save
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PCH @ $3B ;program counter save
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A1L @ $3C ;general purpose
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A1H @ $3D ;general purpose
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SPDBYT @ $E7 ;text output speed limiter
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BRKV @ $03f0 ;address of BRK handler
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SOFTEVEC @ $03f2 ;address of RESET handler
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PWREDUP @ $03f4 ;power-up RESET checksum
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USRADDR @ $03F8 ;jump to function that handles monitor Ctrl-Y
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NMIVEC @ $03FB ;jump to function that handles NMI
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IRQADDR @ $03FE ;address of IRQ handler
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PLOT @ $F800 ;lo-res plot at X=Y-reg, Y=Acc
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PLOT1 @ $F80E ;lo-res plot at X=Y-reg, Y per GBASL/H
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HLINE @ $F819 ;lo-res horiz line at Y=Acc with X from $2c
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VLINE @ $F828 ;lo-res vert line at X=Y-reg and Y from Acc to $2b
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CLRSCR @ $F832 ;clear lo-res screen to black
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CLRTOP @ $F836 ;clear top part of lo-res screen to black
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GBASCALC @ $F847 ;compute gfx base addr for line in Acc
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NXTCOL @ $F85F ;change lo-res color to (color)+3
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SETCOL @ $F864 ;set lo-res color to Acc
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SCRN @ $F871 ;load Acc with lo-res value at Y=Acc, X=X-reg
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INSDS1_2 @ $F88C
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INSDS2 @ $F88E
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GET816LEN @ $F890
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INSTDSP @ $F8D0 ;monitor/mini-asm display
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PRNTYX @ $F940 ;print Y-reg/X-reg as 4 hex digits
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PRNTAX @ $F941 ;print Acc/X-reg as 4 hex digits
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PRNTX @ $F944 ;print X-reg as 2 hex digits
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PRBLNK @ $F948 ;print 3 spaces
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PRBL2 @ $F94A
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PCADJ @ $F953 ;monitor/mini-asm PC adjust
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TEXT2COPY @ $F962
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OLDIRQ @ $FA40 ;autostart ROM IRQ handler
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BREAK @ $FA4C
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OLDBRK @ $FA59
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RESET @ $FA62
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PWRUP @ $FAA6
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SLOOP @ $FABA
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REGDSP @ $FAD7 ;display register contents
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RTBL @ $FB19
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PREAD @ $FB1E ;read paddle specifed by X-reg, return in Y-reg
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PREAD4 @ $FB21
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INIT @ $FB2F ;screen initialization
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SETTXT @ $FB39 ;set screen to text mode
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SETGR @ $FB40 ;set screen to graphics mode
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SETWND @ $FB4B ;set normal low-res graphics window
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SETWND2 @ $FB51
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TABV @ $FB5B ;place cursor at line (A-reg) and column (ch)
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APPLEII @ $FB60 ;clear screen and put "Apple II" into first line
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SETPWRC @ $FB6F
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VIDWAIT @ $FB78
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KBDWAIT @ $FB88
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VERSION @ $FBB3
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ZIDBYTE2 @ $FBBF
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ZIDBYTE @ $FBC0
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BASCALC @ $FBC1 ;calculate text base address
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BELL1 @ $FBDD ;sound bell regardless of output device
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BELL1_2 @ $FBE2
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BELL2 @ $FBE4 ;sound bell
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STORADV @ $FBF0
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ADVANCE @ $FBF4 ;move cursor right
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VIDOUT @ $FBFD ;output Acc as text
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BS @ $FC10 ;move cursor left
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UP @ $FC1A ;move cursor up
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VTAB @ $FC22 ;tab to row specified in Acc
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VTABZ @ $FC24
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CLREOP @ $FC42 ;clear screen from cursor to end of page
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HOME @ $FC58 ;clear screen and reset text output to top-left
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CR @ $FC62 ;perform a carriage return
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LF @ $FC66 ;perform a line feed
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SCROLL @ $FC70 ;scroll up 1 line
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CLREOL @ $FC9C ;clear to end of line
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CLREOLZ @ $FC9E
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WAIT @ $FCA8 ;delay for (26 + 27*Acc + 5*(Acc*Acc))/2 cycles
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NXTA4 @ $FCB4 ;increment A4
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NXTA1 @ $FCBA ;increment A1
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HEADR @ $FCC9 ;write cassette sync
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WRTAPE @ $FCE5 ;casssette write
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RDKEY @ $FD0C ;read key
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FD10 @ $FD10
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RDKEY1 @ $FD18
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KEYIN @ $FD1B ;get next key input from keyboard hardware
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RDCHAR @ $FD35 ;calls RDKEY to get next char
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GETLNZ @ $FD67 ;get a line of input
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GETLN @ $FD6A ;get a lint of input
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GETLN0 @ $FD6C
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GETLN1 @ $FD6F
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CROUT1 @ $FD8B
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CROUT @ $FD8E ;print a carriage return
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PRA1 @ $FD92 ;print CR, then hex of A1H/A1L, then minus sign
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PRBYTE @ $FDDA ;print Acc as two-digit hex number
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PRHEX @ $FDE3 ;print right nibble of Acc as single hex digit
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COUT @ $FDED ;print Acc to output device
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COUT1 @ $FDF0
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COUTZ @ $FDF6
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IDROUTINE @ $FE1F
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MOVE @ $FE2C ;memory move A1/A2 to A4
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LIST @ $FE5E ;disassemble 20 instructions (not on GS)
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SETINV @ $FE80 ;set video mode to inverse
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SETNORM @ $FE84 ;set video mode to normal
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SETKBD @ $FE89 ;reset char input handler to ROM
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INPORT @ $FE8B
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SETVID @ $FE93 ;reset char output handler to ROM
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OUTPORT @ $FE95
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GO @ $FEB6
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WRITE @ $FECD ;write data to cassette
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READ @ $FEFD ;read data from cassette
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PRERR @ $FF2D ;print "ERR" and sound bell
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BELL @ $FF3A ;sound bell
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RESTORE @ $FF3F ;restore 6502 registers from $45-48
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SAVE @ $FF4A ;save 6502 registers to $45-49
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IORTS @ $FF58 ;JSR here to find out where one is
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OLDRST @ $FF59 ;RESET entry point
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MON @ $FF65 ;normal entry to monitor
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MONZ @ $FF69 ;reset and enter monitor
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MONZ2 @ $FF6C
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MONZ4 @ $FF70
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DIG @ $FF8A
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GETNUM @ $FFA7
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NXTCHR @ $FFAD ;part of GETLN input loop
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TOSUB @ $FFBE
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ZMODE @ $FFC7
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