Tech Support > Microsoft Windows > Drivers > Inter I/O on PCI BUS
Inter I/O on PCI BUS
Posted by GiandoDRV on February 9th, 2004



Hi Folks

I saw an interesting problem on PCI BUS timing
On our PCI driver any time i make a sequential write data using WRITE_REGISTER_LONG , and the time between two
consecutive write is about ~300 nSec (on PCI BUS 33 MHz) agreement with PCI specific. Otherwise, when we make tw
consecutive Read using READ_REGISTER_LONG, the time is about ~800 nSec. Why this time-difference

TIA

Regards, Giand

Posted by Mark Roddy on February 10th, 2004


On Mon, 9 Feb 2004 07:41:07 -0800, GiandoDRV <mecomeco59@libero.it>
wrote:

Writes can be posted in the pci bridge device while reads, obviously,
cannot be.




=====================
Mark Roddy
Windows .NET/XP/2000 Consulting
Hollis Technology Solutions 603-321-1032
www.hollistech.com

Posted by GiandoDRV on February 10th, 2004


Thanks a lot Mark

With kind regards, Giando.


Similar Posts