Commodore Plus 4 - Page 454

442
Index
Datatypes, 3-4
Database program. See File manager.
Datassette, 360-371
DB command (word processor), 103-104
Debugging programs, 39, 80, 94-95, 185
DEC, 30
DEC instruction, 259-260
Decimal mode, 280-281,292-293
additional example, 254
DEF FN, 30-31
Default, 2
Defining
function keys, 55-56
functions, 30-31
Deleting
blocks of text (word processor), 103-104
cell entries, 124, 137
DELETE, 31
files (BASIC), 85-86, 334
files (built-in programs), 104, 126
lines (BASIC), 160-161
lines (word processor), 104
ce numbers, 65
DEX instruction, 261
DEY instruction, 259-260
DF command (built-in programs), 104, 126
DIM, 31-32, 180-181
Dimensioning arrays, 31-32, 180-181
Direct-access programming, 335-337
DIRECTORY command, 32-33, 123, 141, 332
Disassemble (D) command, 230-231
Diskdrives, 323-360
CLOSE, 23-24, 311, 355, 359-360
deleting files, 85-86, 334, 347-350
directories, 32-33, 123, 141, 332
drive status, 38
error numbers, 38, 400-405
formatting, 48-49, 99-100, 332-333
initializing, 130-131,333
loading (BASIC), 34, 324-325
loading (built-in software), 107-108
machine language, 350-360
OPEN, 64-66, 325-326
RAM, accessing, 342-347
saving (BASIC), 38-39, 83-84, 324-325
saving (built-in software), 110-111
unSCRATCHing files, 347-350
verifying, 96, 324-325
Disk maintenance, 331-332
Disk sorts (file manager), 141-142
Displaying text
CHAR, 18-20, 190
PRINT, 19,68-70, 190
PRINT USING, 71-73, 74, 190
PUDEF, 71,74-76
Displaying records (file manager), 146, 147
Division by two (example), 276
DL command (word processor), 104
DLOAD, 34, 59, 325
DO ... WHILE/UNTIL . . . LOOP, 34-36
Document printing (word processor), 108-109,
113-120
Documenting programs (REM), 77
Dollar format (spreadsheet), 140
DOS, 323-324
DOS error messages, 400-405
Dot mode, 375-376
DRAW, 36-38
DS (BASIC), 38
DS (file manager), 141-142
DS$, 38
DSAVE, 38-39, 324-325
Duplicating a disk, 16-17,27-28
Duration of a sound, 87-88
EL, 39
ELSE, 39, 50-52
END, 39
EOF? instruction (file manager), 114
EOR instruction, 261-263
EP command (word processor), 103, 104
ER, 39
ERRS, 39
Errors
BASIC error messages, 395-399 ^
debugging, 39,94-95
disk drive errors, 38, 324, 400-405
DOS error message, 400-405
trapping routines, 39, 80, 94, 185
Escape key functions
editing the screen, 159-161
features, 156-163
reducing screen-display size, 161
screen windows, 162
use in programs, 162-163
Exclusive OR (XOR), 9-10, 97
Execute (G) command, 231-232
Execution times (clock cycles), 289-291
EXIT, 34-36, 40
Exiting to BASIC, 238
Exponentiation, 4, 5-6, 173
Expression, 2
Extended color mode, 207-209, 221, 224-225
F (fill) command, 231
Fields (file manager), 114, 141
File manager
accessing from other programs, 98, 112, 139
commands, 140-149
displaying records, 146, 147