Commodore 1541 Operation & User’s Manual

47, When working with a new relative file that will soon be very large, it will save much lime to create a record at the projected end of the Tile. In other words, if you ex pert the file to be 1000 records long, create a record* 1000 as soon as the file is created. This will force the DOS…

20, 4* DISK COMMANDS OPEtV AND PRINT # Up 'til now, you have explored the simple ways of dealing with the disk drive. In order to communicate with the disk drive more fully, you have to touch on the OPEN and PRINTS statements in BASIC (more details of these commands arc availabl…

50, REMEMBER: 1) Before a file can be written 10, or read from, a POSITION command must be ex ecuted. 2) You must always use PRINT #1 with the POSITION command. This puts your daia under command channel control. 3) The FIRST character string code in ihe POSITION command must correspond 10 the TH…

16, or a file is OPENed for writing. BEWARE; the BAM isn't updated until the file is CLOSEd, even though the directory changes right away. If a file isn't CLOSEd pro perly, all data in thai file will probably be lost. The directory can be LOADed into your memory just like a BASI…

10, Commodore 1541 2. UNPACKING AND CONNECTING CONTENTS OF BOX Included with the 154] disk drive unii, you should find a gray power cable, black serial bus cable, this manual, and a demonstration diskette. The power cable has a con nection for the back of ihc disk drive on one end, and for a grounde…