2 ; PET generic definitions.
6 ; ---------------------------------------------------------------------------
7 ; Zero page, Commodore stuff
9 VARTAB := $2A ; Pointer to start of BASIC variables
10 MEMSIZE := $34 ; Size of memory installed
11 TXTPTR := $77 ; Pointer into BASIC source code
12 TIME := $8D ; 60HZ clock
13 KEY_COUNT := $9E ; Number of keys in input buffer
14 RVS := $9F ; Reverse flag
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 FNLEN := $D1 ; Length of filename
22 LFN := $D2 ; Current Logical File Number
23 SECADR := $D3 ; Secondary address
24 DEVNUM := $D4 ; Device number
25 SCR_LINELEN := $D5 ; Screen line length
26 CURS_Y := $D8 ; Cursor row
27 FNADR := $DA ; Pointer to file name
34 BASIC_BUF := $200 ; Location of command-line
35 BASIC_BUF_LEN = 81 ; Maximum length of command-line
37 KEY_BUF := $26F ; Keyboard buffer
45 ;----------------------------------------------------------------------------
46 ; PET ROM type detection
54 ;----------------------------------------------------------------------------
55 ; Vector and other locations
61 ; ---------------------------------------------------------------------------