DOS ain't dead

BIOS and memory | no memory needed ? (Miscellaneous)

posted by Japheth , Germany (South), 30.08.2007, 07:38

> > No. A buffer is only needed if the source/destination address isn't
> DWORD
> > aligned. And if no such buffer is available, the driver will use
> PIO mode.
>
> Do you mean driver or BIOS here ?

the BIOS

> Does it mean that BIOS can use DMA for almost no "cost" (RAM) ?

Yes

> How can BIOS support USB (kbd, mouse, and storage), if it's that memory
> hoggy when using DOS drivers ?

Possibly there is large space for improvements in the current DOS USB drivers.

---
MS-DOS forever!

Complete thread:

• BIOS and memory - DOS386, 25.08.2007, 02:47 (Miscellaneous)
  • BIOS and memory - Japheth, 25.08.2007, 08:27
    • BIOS and memory | no memory needed ? - DOS386, 29.08.2007, 16:03
      • BIOS and memory | no memory needed ? - Japheth, 30.08.2007, 07:38
        • BIOS and memory | no memory needed ? - Jose Antonio Senna, 09.09.2007, 23:59
          • BIOS and memory | no memory needed ? - rr, 10.09.2007, 13:37