کتاب کاسه‌ای: برای کامودور ۶۴ (و ویک-۲۰)

Great user guide for K7 tapes. With great examples of use with BASIC and assembly 6502. Several technical insights into how K7s work.From my experience with K7 and Random Access, I see exposing techniques like using overlays as something unrealisable with K7 that has sequential access. Magnetic tape indexing is something that only existed on the mainframe.Although mythical in practice (for the time that can reach 30 minutes to load an overlay) the book brings techniques that have only become realistic with floppy drives.Great reading for the nostalgic, getting the challenge of hobbyist electronics to assemble an indexed K7, similar to the mainframes, starting from a common K7 recorder. Really great hacking. 1. INTRODUCTION ........................................ 1 2. INSTRUCTIONS FOR DATASSETTE HANDLING ................ 3 2.1 SAVE ................................................ 3 2.2 LOAD ................................................ 8 2.3 VERIFY .............................................. 9 2.4 OPEN ............................................... 10 2.5 PRINT# and CLOSE ................................... 12 2.6 INPUT# ............................................. 15 2.7 GET# ............................................... 23 3. SECONDARY ADDRESS .................................. 25 4. STATUS VARIABLE .................................... 29 4.1 SAVING PROGRAMS AFTER 'LOAD ERROR' ................. 31 5. LOADING AND STORAGE UNDER PROGRAM CONTROL .......... 37 5.1 OVERLAY TECHNIQUE .................................. 40 6. STORAGE OF MACHINE LANGUAGE PROGRAMS ............... 43 7. CASSETTE BUFFER .................................... 49 7.1 CREATING A LIST OF CASSETTE CONTENTS .............. 50 7.2 DISPLAY OF FILES FOUND ............................. 53 7.3 SELF-STARTING PROGRAMS AND PROGRAM PROTECTION ...... 55 8. STORAGE FORMAT IN CASSETTE STORAGE ................. 63 9. APPENDING BASIC PROGRAMS ........................... 67 10. PROGRAM CONTROL OF DATASSETTE ...................... 73 11. DATASSETTE HARDWARE ................................ 83 11.1 CARE OF DATASSETTE ................................. 83 11.2 CHOICE AND HANDLING OF CASSETTES ................... 85 11.3 DATASSETTE OPERATION ............................... 87 11.4 LOUDSPEAKER FOR DATASSETTE ......................... 90 11.5 ADJUSTING THE HEAD ................................. 92 11.6 OTHER CASSETTE RECORDERS FOR DATA STORAGE .......... 99 12. NEW 'FASTTAPE' CASSETTE OPERATING SYSTEM .......... 103 12.1 PROGRAM DESCRIPTION ............................... 126 13. DATA PROCESSING WITH 'FASTTAPE' ................... 137 13.1 PROGRAM DESCRIPTION ............................... 159 14. CASSETTE CONTENTS & CATALOG OF FASTTAPE CASSETTES.169 15. DISK BACK-UP FOR CASSETTE AND VICE VERSA .......... 171 15.1 DISK BACK-UP FOR CASSETTE ......................... 171 15.2 PROGRAM DESCRIPTION OF DISK BACK-UP FOR CASSETTE .. 179 15.3 CASSETTE BACK-UP FOR DISKETTE ..................... 181 15.4 PROGRAM DESCRIPTION OF CASSETTE BACK-UP FOR DISK .. 208 APPENDIX IMPORTANT ADDRESSES FOR DATASSETTE HANDLING ... 211 This book is almost required if you own a Commodore Datasete. It completely explains the operations of the cassete: from the actual mechanical operation to a faster operating system. Included is the “FAST TAPE” operating system which is quicker than the 1541 Disk Drive. Processing data with ‘‘FAST TAPE”’ is also explained. Some of the topics covered include: Self starting programs Protected programs Other cassettes FAST TAPE Disk back-up to cassette Cassette back-up to disk