DOS ain't dead

AHCI CD-ROM driver for DOS (Developers)

posted by DOS386, 22.12.2009, 17:11

> The nicest part is that it's all LBA mode, and it's all
> 48bit (actually 64 bit!) so finally, we have no
> size barriers, or at least not any realistic ones. 64bit is what, like
> 16,000TB or something insane!

LBA64 with 512 Byte's per sector : 8'192 EiB

> > What performance do you get using INT $13 (IDECHECK) ?
> 10182 kB/S which is pretty respectable.

10 MiB (Byte's) per second ? Usable, but not fast at all, some BIOS'es get only 5 MiB/s while DOS DMA driver gets 60 MiB/s with very same hardware

> In AHCI mode, using my code, I did a similar test; 128k transfers (which
> should equate to IDECHECK's 256 sectors per transfer) and I topped out at
> 73MB/sec. [same drive, same motherboard, same controller]

Good, but since I get 60 MiB/s with just IDE (not even SATA) ...

> thinking that making a clone type program, something that bypasses INT13,
> would be cool and useful.

Don't forget to add optional INT $13 support besides native AHCI

---
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the following string:*** This is Copyright 1983 Microsoft ***

Complete thread:

• AHCI projects? - DOSferatu, 14.12.2009, 20:30 (Developers)
  • AHCI CD-ROM driver for DOS - Rugxulo, 15.12.2009, 02:10
    • AHCI CD-ROM driver for DOS - RayeR, 16.12.2009, 01:37
      • AHCI CD-ROM driver for DOS - RayeR, 16.12.2009, 01:45
      • AHCI CD-ROM driver for DOS - DOS386, 18.12.2009, 02:09
        • AHCI CD-ROM driver for DOS - DOSferatu, 18.12.2009, 16:04
          • AHCI CD-ROM driver for DOS - DOS386, 19.12.2009, 04:08
            • AHCI CD-ROM driver for DOS - DOSferatu, 21.12.2009, 16:45
              • AHCI CD-ROM driver for DOS - DOS386, 22.12.2009, 17:11
        • AHCI CD-ROM driver for DOS - RayeR, 19.12.2009, 20:27
          • AHCI CD-ROM driver for DOS - DOS386, 20.12.2009, 08:05
  • AHCI projects? - Maybe Jack R. Ellis!! - swf, 16.12.2009, 01:05
  • AHCI projects? - Khusraw, 16.12.2009, 11:54
    • AHCI projects? - DOSferatu, 16.12.2009, 15:56
      • AHCI projects? - RayeR, 16.12.2009, 18:10
        • AHCI projects? - DOSferatu, 16.12.2009, 22:21
        • AHCI projects? - marcov, 17.12.2009, 10:25
          • AHCI projects? - RayeR, 19.12.2009, 20:37
            • AHCI projects? - marcov, 17.01.2010, 14:34
              • AHCI projects? - Laaca, 08.03.2010, 09:41
                • AHCI projects? - DOSferatu, 10.03.2010, 16:57
                  • AHCI projects? | Sound - DOS386, 17.03.2010, 05:53
                    • AHCI projects? | Sound - DOSferatu, 17.03.2010, 22:34
                      • AHCI projects? | Sound | Mail theft - DOS386, 18.03.2010, 09:36
      • AHCI projects? - Gabiz_ro, 27.03.2010, 22:45
        • AHCI projects? - DOSferatu, 31.03.2010, 15:59
          • AHCI projects? - Gabiz_ro, 01.04.2010, 19:00
      • AHCI projects? - Gabiz_ro, 07.04.2010, 22:58
      • AHCI projects? - kladno, 06.05.2010, 08:40
  • AHCI projects? - mcluskyism, 06.05.2023, 09:37
    • AHCI projects? - glennmcc, 07.05.2023, 21:04
      • AHCI projects? - mcluskyism, 08.05.2023, 17:28
    • AHCI projects? - mcluskyism, 13.05.2023, 13:27