SAA7134 multiple cards - options

I'm trying to set up to SAA7134 cards and can't seem to set multiple options
to force the devices to particular /dev/video devices etc.

If I have simply this:

options saa7134 oss=1 oss_debug=1 audio_debug=1 \
                ts_debug=1 core_debug=1 audio_debug=1 vbi_debug=1
i2c_debug=1 core_debug=1

It works and I get /dev/video0 and /dev/video1 etc. All devices are 0 and 1.

However I want them to be 1 and 2 so as not to conflict with the sound card
in particular. So I try:

options saa7134 oss=1 oss_debug=1 audio_debug=1 \
                ts_debug=1 core_debug=1 audio_debug=1 vbi_debug=1
i2c_debug=1 core_debug=1 \
                vbi_nr=1,2 mixer_nr=1,2 radio_nr=1,2 dsp_nr=1,2 ts_nr=1,2
video_nr=1,2

And I get an error about not having multiple values for vbi_nr etc.

If I have

options saa7134 oss=1 oss_debug=1 audio_debug=1 \
                ts_debug=1 core_debug=1 audio_debug=1 vbi_debug=1
i2c_debug=1 core_debug=1 \
                vbi_nr=1 mixer_nr=1 radio_nr=1 dsp_nr=1 ts_nr=1 video_nr=1

the driver tries to make both cards /dev/video1 etc and fails on the second
card.

How can I do this?

Also does anyone have a copy of the register manual for the SAA7134. Is it
under NDA?

Thanks
CH