Re: int 0x13 utility

Dirk Wolfgang Glomp wrote:
But if you write your own HD-driver, the physical CHS-limit is:
16 heads, 255 sectors, 65536 tracks(cylinders), and this gives
us 267386880 sectors (= 127.5 GB).
So if the the hardware can handle it then it works almost like LBA28
(max= 128 GB), ...except for the unconvenient calculation needs.
But is this a DOS or a BIOS level driver?

If you write the driver for DOS it´s a DOS-driver, else if you write
it for your own OS maybe you can call it BIOS-driver?

Nop. But I don't know whether DOS can have it's own drivers to control HDs.
DOS usually calls the BIOS, so one can replace the BIOS HD driver and have
DOS call it, thinking it's the original BIOS driver.

Did you understand, or need more explaining?

JJ

.

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