How to get the starting address of video memory on Graphics

QNX Newsgroups (Archives) qdn.public.qnxrtp.os
1

Hi everyone,

I need to get the starting address of video buffer memory
on AGP Graphics for our DMA application under 6.1.

How to find the starting address of video memory on Graphics ?

Thanks in advance.
B.H. Huh

2

If you are using GDDK then look at the benchmark example.

Otherwise you can typically find the physical address of the video memory
from by reading the PCI configuration for the board.

Jens


“BH Huh” <purunsan@orgio.net> wrote in message
news:a6q57e$5ku$1@inn.qnx.com…

Hi everyone,

I need to get the starting address of video buffer memory
on AGP Graphics for our DMA application under 6.1.

How to find the starting address of video memory on Graphics ?

Thanks in advance.
B.H. Huh

3

Or use physical memory at 0xb800 =) in console mode.
“Jens H Jorgensen” <jhj@remove-nospam-videk.com> wrote in message
news:a6q9qk$8pb$1@inn.qnx.com…

If you are using GDDK then look at the benchmark example.

Otherwise you can typically find the physical address of the video memory
from by reading the PCI configuration for the board.

Jens


“BH Huh” <> purunsan@orgio.net> > wrote in message
news:a6q57e$5ku$> 1@inn.qnx.com> …
Hi everyone,

I need to get the starting address of video buffer memory
on AGP Graphics for our DMA application under 6.1.

How to find the starting address of video memory on Graphics ?

Thanks in advance.
B.H. Huh

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