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 TIME            = $8D           ; 60HZ clock
  10 MEMSIZE         = $34           ; Size of memory installed
  11 ST              = $96           ; IEC status byte
  12 SECADR          = $D3           ; Secondary address
  13 DEVNUM          = $D4           ; Device number
  14 KEY_COUNT       = $9E           ; Number of keys in input buffer
  15 CURS_FLAG       = $A7           ; 1 = cursor off
  16 CURS_BLINK      = $A8           ; Blink counter
  17 CURS_CHAR       = $A9           ; Character under the cursor
  18 CURS_STATE      = $AA           ; Cursor blink state
  19 SCREEN_PTR      = $C4           ; Pointer to current char in text screen
  20 CURS_X          = $C6           ; Cursor column
  21 CURS_Y          = $D8           ; Cursor row
  22 SCR_LINELEN     = $D5           ; Screen line length
  23
  24 KEY_BUF         = $26F          ; Keyboard buffer
  25
  26
  27 ; ---------------------------------------------------------------------------
  28 ; Vector and other locations
  29
  30 IRQVec          = $0090
  31 BRKVec          = $0092
  32 NMIVec          = $0094
  33