Commodore 2040 User Manual page 94

4040,56
8050,57
Directory, 60
2040,3040,55
4040,56
8050,57
Formatting, 24, 25
GET# command, 41
HEADER (BASIC 4.0 direct command), 25
High byte, 48, 51
Hookup, floppy disk, 11
ID, 24, 25, 26
IEEE-488 interface, 4,11,47
Indicator lights (see LED indicator lights)
INPUT# command, 42
I/O channels, 22, 47, 71
Inserting diskettes
2040,3040,4040,13
8050,13
Initialization
2040 and 3040,25
4040,26
8050,26
Job queue, 47
Key file, primary (see primary key file)
LED (light emitting diode; see LED
indicator lights)
LED indicator lights, 3, 12, 18, 81
Limitations, DUPLICATE command, 28
Line feed, suppression of, 41
LOAD$ command, 26
Loading
DOS support, 77
a program with a slash (I) symbol, 78
and running a program with up arrow
(t) symbol, 79
Low byte, 48, 51
Magnetic fields, 9
Maintenance commands, disk, 23
MEMORY commands, 51
MEMORY-WRITE command, 51
MEMORY-READ command, 52
MEMORY-EXECUTE command, 52
OPEN command, 38
Operating system, disk, 15, 18, 22, 25,47,
59,69,70,71,72,77
Parameters, 48, 49
Parms,48
Pattern matching, 85
Performance test
4040/8050, 14
2040/3040,
17
POKE command, 14, 17
Pointer, block, 26
PRG file, 36, 61
Primary key file (.KEY01), 66
PRINT# command, 41
Program file, 61
Program file format, 61
Quickload feature, 44
Quick reference: commands, 86
Random access
Add a record, 67
Change a record, 68
Create a file, 66
Ending the program, 69
Example, 66
Field markers, 66
Field size, 66
Restrictions, 66
Getting directory of listings, 69
Primary file names, 66
Primary key file, 66
Record size, 66
See a record, 68
Reading list, 4
RECORD# command, 43
Record pointer, 43
Relative files, 69
4040,8050,69
Accessing, 73
Block pointers, 70
Channel restrictions, 71
Creating, 72
DOS compatability, 69
Expanding a file, 70
Format, 70
Main components, 69
Record size, 69
Side sectors, 69
Side tracks, 69
Storage capacity, 70
RENAME (BASIC 4.0 direct command),
32
RENAME command, 32
Requesting error messages, 81
Safety feature, HEADER command, 25
SAVE command, 36
SCRATCH (BASIC 4.0 direct command),
33
SCRATCH command, 33
Screen displays, actual, 14, 15, 16, 17, 18,
19,26,37,40,44,45,77,81
Secondary address, 35, 38,42,47, 50
Sector, single: expanded view, 70
Sequential format, 61
Side sectors, 69
Side track, 69
Simplifying commands, 77
Single record access, 65
97