DOS ain't dead

Volumes vs physical storage media | WAS "Protectmod handl" (Developers)

posted by DOS386, 06.09.2010, 20:10

> single INT 13h transaction is 255, or 127.5 kiB

Maybe only 128 sectors (and many BIOS'es are bugged and accept even 127 sectors only ???) and DMA accepts only 64 KiB too (and buffer must be 64 KiB aligned)

> memory address provided for the transfer is always
> expected to be in segment:offset format, so that
> automatically limits it to 64 kiB.

Dumb DOS + BIOS

> You could load a "large buffer" with multiple INT
> 13h requests and then empty the buffer the same way,
> which may save a little bit of head thrashing on a
> real hard drive (with actual platters & heads & tracks)

That's what I meant

> more like "data durability" (or "permanence" or
> "stickiness" or something like that), not "media durability".

Heh, you are right

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Complete thread:

• Protectmode handler called from realmode - Laaca, 12.08.2010, 21:12 (Developers)
  • Protectmode handler called from realmode - ecm, 12.08.2010, 21:24
    • Protectmode handler called from realmode - Laaca, 13.08.2010, 01:46
      • Protectmode handler called from realmode - Japheth, 13.08.2010, 07:31
        • Protectmode handler called from realmode - bretjohn, 13.08.2010, 18:43
          • EDIT: Protectmode handler called from realmode - bretjohn, 13.08.2010, 19:25
            • Volumes vs physical storage media | WAS "Protectmod handl" - DOS386, 26.08.2010, 09:33
              • Volumes vs physical storage media | WAS "Protectmod handl" - bretjohn, 26.08.2010, 19:03
                • Volumes vs physical storage media | WAS "Protectmod handl" - DOS386, 27.08.2010, 03:25
                  • Volumes vs physical storage media | WAS "Protectmod handl" - bretjohn, 27.08.2010, 16:47
                    • Volumes vs physical storage media | WAS "Protectmod handl" - DOS386, 28.08.2010, 01:26
                      • Volumes vs physical storage media | WAS "Protectmod handl" - bretjohn, 28.08.2010, 16:35
                        • Volumes vs physical storage media | WAS "Protectmod handl" - DOS386, 06.09.2010, 20:10