2 ; PET generic definitions.
6 ; ---------------------------------------------------------------------------
7 ; Zero page, Commodore stuff
9 MEMSIZE := $34 ; Size of memory installed
10 TXTPTR := $77 ; Pointer into BASIC source code
11 TIME := $8D ; 60HZ clock
12 KEY_COUNT := $9E ; Number of keys in input buffer
13 RVS := $9F ; Reverse flag
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 FNLEN := $D1 ; Length of filename
21 LFN := $D2 ; Current Logical File Number
22 SECADR := $D3 ; Secondary address
23 DEVNUM := $D4 ; Device number
24 SCR_LINELEN := $D5 ; Screen line length
25 CURS_Y := $D8 ; Cursor row
26 FNADR := $DA ; Pointer to file name
28 BASIC_BUF := $200 ; Location of command-line
29 BASIC_BUF_LEN = 81 ; Maximum length of command-line
31 KEY_BUF := $26F ; Keyboard buffer
33 ;----------------------------------------------------------------------------
34 ; PET ROM type detection
42 ;----------------------------------------------------------------------------
43 ; Vector and other locations
49 ; ---------------------------------------------------------------------------