As you will note, the original date of this report is now several months past. I had to have something that would work, and finally I pulled the S3 card and put in a Matrox II which is working properly with Alpha etch.
I can put the S3 back in and get the lspci output for you, but it will be a few days before I can do so. The card itself and the bus it goes into is working, as OpenVMS on the same system does correctly initialize and use the display with the S3 card in place.
