Ethan Dicks wrote: > > --- Richard Atkinson <firstname.lastname@example.org> wrote: > > Does anyone know how filetypes (PRG, USR, SEQ and REL) are implemented? > > Implemented how? The difference between a PRG file and an SEQ file (besides > the bit in the directory entry) is that a PRG starts with the load address > as a low-byte, high-byte pair. USR files are undefined by CBM DOS, and REL > files are different depending on the exact version you have (super-side-sectors > and the like). There's lots of code in every drive to support relative files. > I've writted professional code to manipulate them, but at this point in > history, I don't think the amount of coding required to continue to support > them is worth the payback. Has anyone ever used them for anything more > interesting than a simple index file, a la electronic Rolodex? > > -ethan > The BBS I prefer to use requires REL files for it's user files and messaging system. (Image 1.2) I figure there may be a few other BBS systems that use REL files as extensively. Other than that, there are a few databases like the Consultant... but mainly it would be BBS sysops. -- 01000011 01001111 01001101 01001101 01001111 01000100 01001111 01010010 01000101 Larry Anderson - Sysop of Silicon Realms BBS (209) 754-1363 300-2400 baud Commodore 8-bit page at: http://www.jps.net/foxnhare/commodore.html 01000011 01001111 01001101 01010000 01010101 01010100 01000101 01010010 01010011 - This message was sent through the cbm-hackers mailing list. To unsubscribe: echo unsubscribe | mail email@example.com.
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