Commodore CBM 2040, CBM 3040, CBM 4040, CBM 8050 User Manual

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104 Pages

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User's Manual
for
GBM 5y4-lnGh
Dual
Floppy Disk
Drives
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User's Manua
for
CBM Dual Drive
Floppys
Model 2040-Model 4040
Model 3040-Model 8050
Appropriate for use with:
Commodore Computers
Series 2001 (CBM-PET)
Series 3000 (CBM)
Series 4000 (PET)
• Series 8000 (CBIVI)
Part Number 320899
October 1980
commodore
© 1980 Commodore Business Machines, Inc.
^ Table of Contents
Page
Chapter 1 Introduction 1
General Information 2
Description 3
Front Panel 3
Back Panel 3
Interior Configuration 4
The Diskette 5
Specifications 5
Care Of The 2040,3040,4040 and 8050 9
Care Of The Diskettes 9
Unpacking The Disk Drive 9
Chapter 2 Preparing To Use Your Disk Drive 11
Connecting The Disk Drive To The Computer 11
Performing The Power-On Test 12
Inserting The Diskette Into The 8050 13
liisi!fliii|j Till! IJiiiktiUe liilu Tlie HO-IO, ijO-lO uml <10'1().. Iit
The 4040 and 8050 Performance Test 14
The 2040 and 3040 Performance Test 17
Chapter 3 Learning How To Use Your Floppy Disk Drive 21
The Block Availability Map (BAM) 22
The Disk Operating System (DOS) 22
Disk Maintenance Commands 23
NEW 24
HEADER (BASIC 4.0 Direct Command) 25
Initialization (2040 and 3040) 25
Initialization (4040) 26
Initialization (8050) 26
The Directory 26
LOAD$ 26
DIRECTORY (BASIC 4.0 Dkect Command) . 27
Printing The Dhrectory 27
in
IV
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
Chapter 4 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
Chapter 5 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
Chapter 6 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
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Key Features

  • Dual floppy disk drives for increased storage capacity
  • Stores and retrieves data quickly and easily
  • Perfect for storing programs, data files, and other important information
  • Compatible with a wide range of Commodore computers
  • Easy to use and install

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Frequently Answers and Questions

What is the storage capacity of the CBM 4040?
The CBM 4040 has a storage capacity of 800K per diskette, for a total of 1.6MB.
What types of diskettes can I use with the CBM 4040?
The CBM 4040 is compatible with 5.25-inch, double-density diskettes.
How do I install the CBM 4040?
The CBM 4040 is easy to install. Simply connect the drive to your computer using the included cables.

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