Commodore 2040 User Manual page 4

IV
Chapter 4
Chapter 5
Chapter 6
VALIDATE.................................. 28
COLLECT (BASIC 4.0 Direct Command). . .. 28
DUPLICATE 28
BACKUP (BASIC 4.0 Direct Command). . . .. 29
COpy 29
COpy (BASIC 4.0 Direct Command) . . . . . .. 31
CONCAT (BASIC 4.0 Direct Command). . . .. 31
RENAME 31
RENAME (BASIC 4.0 Direct Command) . . .. 32
SCRATCH 32
SCRATCH (BASIC 4.0 Direct Command). . .. 33
BASIC Commands For Data Handling 35
BASIC Commands Associated with Floppy Disk Drives . . . . . . . .. 35
SAVE and DSAVE (Writing a Program to a Diskette) . .. 36
LOAD and DLOAD (Reading a Program from a
Diskette) 36
VERIFy..................................... 37
OPEN 38
DOPEN 39
CLOSE...................................... 39
DCLOSE 40
Closing The Command Channel 40
Closing The Data Channel 41
PRINT# . . . . .. .. .. . . .. . . . . . . .. .. .. . .. 41
INPUT# 42
GET# 43
RECORD# 43
Quickload Feature (BASIC 4.0) .. . . . . . . . . . . . . . . . . . . . . . . . .. 44
Moving a Tape Program to Disk 45
Advanced Disk Programming 47
Commodore Disk Operating System (DOS) 47
Disk Utility Command Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 48
BLOCK-READ................................ 49
BLOCK-WRITE. . . . . . . . .. .. .. . . .. . . .. .. .. . . . .. 50
BLOCK-EXECUTE 50
BUFFER-POINTER . . . . . . . . . . . . . . . . . . . . . . . . . . .. 50
BLOCK-ALLOCATE " .. . . . . . . . . . . . . .. . .. 51
MEMORy 51
MEMORY-WRITE 51
MEMORY-READ. . . . . . . . . . . . . . . . . . . . .. 52
MEMORY-EXECUTE 52
USER....................................... 52
8050 Disk Zones 59
Advanced File Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 65
Special Open and Close Statements For Direct Access . . . . . . . . .. 65
Random Access Example . . . . . . . . . . . . . . . . . . . . . . .. 66
To Create A File . . . . . . . . . . . . . . . . . . . . . .. 66
To Add A Record. . . . . . . . . . . . . . . . . . . . .. 67
To See A Record 68
To Change A Record 68
Getting The Directory of Listings . . . . . . . . .. 69