MSDOS-Patch

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2 total messages Started by Steffen Koller Thu, 08 Apr 1999 00:00

#1504

Author: Steffen Koller
Date: Thu, 08 Apr 1999 00:00

11 lines
1771 bytes

I want that DOS (Ver 6.2) use the IRQ9 instead of IRQ 14 for the
Disk-Interrupt. Therefor I need to patch DOS, that it will place the
IRQ-Service-Routine for that in the IRQ-Table for IRQ 9 instead of IRQ
14.

Has anyone made such a 'switch' of an IRQ?
Has anyone an idea where I had to make the changes?

Any help and suggestions are welcome. Please mail to
"koller@navd.alcatel.de".
Thank you.

Re: MSDOS-Patch

#1505

Author: osmo vuorio
Date: Thu, 08 Apr 1999 00:00

13 lines
1775 bytes

In article <370CDBB7.8F50C293@navd.alcatel.de>, Steffen Koller <koller@navd.alcatel.de> says:
>
>I want that DOS (Ver 6.2) use the IRQ9 instead of IRQ 14 for the
>Disk-Interrupt. Therefor I need to patch DOS, that it will place the
>IRQ-Service-Routine for that in the IRQ-Table for IRQ 9 instead of IRQ
>14.

Oops.. between pc hw and op system there is bios rom code.
HD is accessed through bios Int13h. So - this is the bios
Int13h vector repgramming question. Why on the earth you
would like to change this most basic pc sw/hw interface ?

Osmo

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