git.sur5r.net Git - cc65/blob - libsrc/pet/pet.inc

   1 ;
   2 ; C64 generic definitions. Stolen from Elite128
   3 ;
   4
   5
   6 ; ---------------------------------------------------------------------------
   7 ; Zero page, Commodore stuff
   8
   9 MEMSIZE         = $34           ; Size of memory installed
  10 ST              = $96           ; IEC status byte
  11 SECADR          = $D3           ; Secondary address
  12 DEVNUM          = $D4           ; Device number
  13 KEY_COUNT       = $9E           ; Number of keys in input buffer
  14 CURS_FLAG       = $A7           ; 1 = cursor off
  15 CURS_BLINK      = $A8           ; Blink counter
  16 CURS_CHAR       = $A9           ; Character under the cursor
  17 CURS_STATE      = $AA           ; Cursor blink state
  18 SCREEN_PTR      = $C4           ; Pointer to current char in text screen
  19 CURS_X          = $C6           ; Cursor column
  20 CURS_Y          = $D8           ; Cursor row
  21 SCR_LINELEN     = $D5           ; Screen line length
  22
  23 KEY_BUF         = $26F          ; Keyboard buffer
  24
  25
  26 ; ---------------------------------------------------------------------------
  27 ; Vector and other locations
  28
  29 IRQVec          = $0090
  30 BRKVec          = $0092
  31 NMIVec          = $0094
  32