The following is a list of peeks & pokes in the zero page area this list was obtained from a beagle bros chart… Decimal | Hexadecimal |
32 | $20 | Text window left-edge (0-39) 33 | $21 | Text window width (1-40) 34 | $22 | Text window top-edge (0-23) 35 | $23 | Text window bottom (1-24) 36 | $24 | Horizontal cursor-position (0-39) 37 | $25 | Vertical cursor-position (0-23) 43 | $2B | Boot slot * 16 (after boot only) 44 | $2C | Lo-res line end-point 48 | $30 | Lo-res COLOR * 17 50 | $32 | Text output format [63=INVERSE 255=NORMAL 127=FLASH] 51 | $33 | Prompt-character (NOTE: POKE 51,0:GOTO LINE # will
| | sometimes prevent a false NOT DIRECT COMMAND obtained
| | with GOTO # alone.)
74-75 | $4A-$4B | LOMEM address (INT) 76-77 | $4C-$4D | HIMEM address (INT) 78-79 | $4E-$4F | Random-Number Field 103-104 | $67-$68 | Start of Applesoft program (NOTE: FP sets start of a
| program to normal 2049. NOTE: To load a program another location=LOC
| POKE 103,LOC-INT(LOC/256)*256:POKE 104,INT(LOC/256):POKE LOC,0
105-106 | $69-$6A | LOMEM (Start of varible space & end of Applesoft program 107-108 | $6B-$6C | Start of array space (FP) 109-110 | $6D-$6E | End of array space (FP) 111-112 | $6F-$70 | Start of string-storage (FP) 115-116 | $73-$74 | HIMEM (NOTE: HIMEM-1 is the highest Applesoft address.) 117-118 | $75-$76 | Line# being executed. (FP) 119-120 | $77-$78 | Line# where program stopped. (FP) 121-122 | $79-$7A | Address of line executing. (FP) 123-124 | $7B-$7C | Current DATA line# 125-126 | $7D-$7E | Next DATA address 127-128 | $7F-$80 | INPUT or DATA address 129-130 | $81-$82 | Var.last used. VAR$=CHR$(PEEK(129))+CHR$(PEEK(130)) (FP) 131-132 | $83-$84 | Last-Used-Varible Address (FP) 175-176 | $AF-$B0 | End of Applesoft Program (Normally=LOMEM) 202-203 | $CA-$CB | Start of Program Address (INT) 204-205 | $CC-CD | End of Varible Storage (INT) 214 | $D6 | RUN Flag (POKE 214,255 turns Applesoft into run only.) 216 | $D8 | ONERR Flag (POKE 216,0 cancels ONERR) 218-219 | $DA-$DB | Line# of ONERR Error 222 _ _ | $DE _ _ _ _ | ONERR Error Codes (DOS Errors have no ?) _-_-_-_-_-_-_-_-_-_-_-| 0=?NEXT WITHOUT FOR 16=?SYNTAX ERROR _-_-_-_-_-_-_-_-_-_-_-| 1=LANGUAGE NOT AVAIBLE 22=?RETURN WITHOUT GOSUB _-_-_-_-_-_-_-_-_-_-_-| 2/3=RANGE ERROR 42=?OUT OF DATA _-_-_-_-_-_-_-_-_-_-_-| 4=WRITE-PROTECTED 53=?ILLEGAL QUANTITY _-_-_-_-_-_-_-_-_-_-_-| 5=END OF DATA 69=?OVERFLOW _-_-_-_-_-_-_-_-_-_-_-| 6=FILE NOT FOUND 77=?OUT OF MEMORY _-_-_-_-_-_-_-_-_-_-_-| 7=VOLUME MISMATCH 90=?UNDER'D STATEMENT _-_-_-_-_-_-_-_-_-_-_-| 8=I/O ERROR 107=?BAD SUBSCRIPT _-_-_-_-_-_-_-_-_-_-_-| 9=DISK FULL 120=?REDIM'D ARRAY _-_-_-_-_-_-_-_-_-_-_-| 10=FILE LOCKED 133=?DIVISION BY ZERO _-_-_-_-_-_-_-_-_-_-_-| 11=SYNTAX ERROR 163=?TYPE MISMATCH _-_-_-_-_-_-_-_-_-_-_-| 12=NO BUFFERS AVAILABLE 176=?STRING TOO LONG _-_-_-_-_-_-_-_-_-_-_-| 13=FILE TYPE MISMATCH 191=?FORMULA TOO COMPLEX _-_-_-_-_-_-_-_-_-_-_-| 14=PROGRAM TO LARGE 224=?UDEF'D FUNCTION _-_-_-_-_-_-_-_-_-_-_-| 15=NOT DIRECT COMMAND 254=?REENTER _-_-_-_-_-_-_-_-_-_-_-| 255=CTRL-C INTERRUPT 224-225 | $E0.E1 | X Coordinate of last HPLOT (0-279) 226 | $E2 | Y Coordinate of last HPLOT (0-191) 228 | $E4 | HCOLOR codes:0=0 42=1 85=2 127=3 128=4 170=5 213=6 255=6 230 | $E6 | Hi res plotting page (32=page 1, 64=page 2, 96=page 3) 231 | $E7 | SCALE (NOTE:SCALE=0 is equivalent to a SCALE of 256.) 232-233 | $E8.E9 | Shape table start address. 234 | $EA | Hi-Res Collision-Check (IF PEEK(234)=0 then the shape
| | started at a non-black hi-res point.)
241 | $F1 | SPEED (NOTE:PEEK(241) is 256 minus the current SPEED.) 243 | $F3 | FLASH Mask 249 | $F9 | ROT