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The Commodore 64’s “ASCII” character set is substantially different from the ASCII character set used by most machines—so different that if you try viewing, on a PC, an unconverted Commodore 64 text file, you will mostly just see garbage. CBM2ASC makes the text legible again. CBM2ASC is also fine-tuned to the conversion of two specific types of Commodore text files, selected by passing an option on the CBM2ASC command line. These specific types of files are Commodore BASIC programs, and documents written with the SpeedScript word processor. CBM2ASC cannot convert many of the specialized Commodore ASCII codes, notably graphics characters which have no equivalent in the PC’s ASCII character set. But it does convert the standard characters (the symbols typically found on typewriter keyboards). The “Commodore BASIC” option converts just about everything except graphics characters within BASIC strings, and the “SpeedScript” option converts an entire SpeedScript file except for escape codes, which affect text formatting, not content. The usual procedure is to first copy the raw floppy disk image from the Commodore 64 disk drive to the PC using an X1541 cable and associated software (at least one enterprise appears to sell these cables, but I assembled my own cable so I have not interacted with them). Once the raw disk image is sitting on the PC, the next step is to use a utility like D64T641 to break the disk image up into individual binary files sitting in a DOS directory. The binary file names typically end in .PRG or .SEQ, and they correspond to individual files on the original Commodore 64 disk. Finally, CBM2ASC comes in, converting a desired binary file from Commodore ASCII to standard ASCII.


System DOS
Size21.81 KB


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