IO port reservation problem.

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c#6

Joined: 20 Apr 2004
Posts: 25

c#6 17 May 2004, 14:39

I was able to enable hardware interrupt 6 Smile

in MeOS, but now I have a question about IO ports.

When I tried to reserve IO ports 3f0h - 3f7h I received an error, so I decided to look at the kernel code. The OS reserves IO ports 3f0h - 3ffh for the com1 mouse, but the standard IO port assignment for the floppy controller is supposed to be 3f0h - 3f7h.

Is there a reason for this and how can I change this assignment "safely"?

Thanks.

17 May 2004, 14:39

Ville

Joined: 17 Jun 2003
Posts: 303

Ville 17 May 2004, 14:51

c#6 wrote:

I was able to enable hardware interrupt 6 in MeOS, but now I have a question about IO ports.

When I tried to reserve IO ports 3f0h - 3f7h I received an error, so I decided to look at the kernel code. The OS reserves IO ports 3f0h - 3ffh for the com1 mouse, but the standard IO port assignment for the floppy controller is supposed to be 3f0h - 3f7h.

Is there a reason for this and how can I change this assignment "safely"?

Thanks.

There seems to be a few extra ports reserved. You can just adjust the lower limit from 0x3f0 to 0x3f8.
By the way, Tolle has written a 32 bit mode floppy driver for pre 2.8

17 May 2004, 14:51

c#6

Joined: 20 Apr 2004
Posts: 25

c#6 17 May 2004, 16:39

That's cool. I'll try it out and if it works I will concentrate my efforts on a universal (maybe) remote control software for MOS. Smile

17 May 2004, 16:39

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