[Info-vax] Two VGA graphics cards in Alphastation XP1000

[Slo]

I have a "PBXGK-BB" graphics card in an XP1000 box and would like to add a second one. It's a 16MB "PBXGB-CA" card I just took from another Alphastation. Both have VGA connectors.

However, the manual for the later states "In a multihead system, only one graphics module can have VGA enabled." There is a jumper for that.

How does one define a multihead system on OpenVMS, and what are the limitations? I'm confused. Should I even try?

Thanks in advance.
Slo