mirror of
https://github.com/cc65/cc65.git
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43 lines
1.2 KiB
PHP
43 lines
1.2 KiB
PHP
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;-----------------------------------------------------------------------------
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; Zero page stuff
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WNDWDTH := $21 ; Right edge of text window
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CH := $24 ; Cursor horizontal position
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CV := $25 ; Cursor vertical position
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BASL := $28 ; Text base address
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INVFLG := $32 ; Normal/inverse(/flash)
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RNDL := $4E ; Random counter low
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RNDH := $4F ; Random counter high
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HIMEM := $73 ; Highest available memory address+1
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;-----------------------------------------------------------------------------
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; Vectors
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DOSWARM := $03D0 ; DOS warmstart vector
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BRKVec := $03F0 ; Break vector
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MLI := $BF00 ; ProDOS Machine Language Interface
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;-----------------------------------------------------------------------------
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; Hardware
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; Keyboard input
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KBD := $C000 ; Read keyboard
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KBDSTRB := $C010 ; Clear keyboard strobe
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; 80 column card switches
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CLRALTCHAR := $C00E ; Normal Apple II char set
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SETALTCHAR := $C00F ; Norm/inv LC, no flash
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ALTCHARSET := $C01E ; >127 if alt charset switched in
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RD80VID := $C01F ; >127 if 80 column video enabled
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; Video soft switches
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MIXCLR := $C052 ; Disable 4 lines of text
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MIXSET := $C053 ; Enable 4 lines of text
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LOWSCR := $C054 ; Page 1
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HISCR := $C055 ; Page 2
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; Game controller
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BUTN0 := $C061 ; Open-Apple Key
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BUTN1 := $C062 ; Closed-Apple Key
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