Xorg on ATI Radeon 1600 Pro

[Olivier Saut]

Hello,

I am trying to run X with an ATI Radeon 1600 Pro (RV530 chipset I think) on
FreeBSD 6.1-RC1. 
I am able to run X with xorg 6.9 and the vesa driver but the refresh rate is
stuck at 60 Hz. 
This card is not supported by the FreeBSD fglrx driver. 
Is there a way to increase the refresh rate (1280x1024 at 85Hz works on my monitor)?

Thanks a lot, 
                        - Olivier