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cc65/libsrc/apple2/apple2.inc
cuz 9a1bab361f Improvements by Oliver Schmidt
git-svn-id: svn://svn.cc65.org/cc65/trunk@3074 b7a2c559-68d2-44c3-8de9-860c34a00d81
2004-06-03 15:05:41 +00:00

43 lines
1.2 KiB
PHP

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