In going through my floppy collection, I've found an alternate copy of Windows. The one that's normally available has issues, I'm told, with VAXmate files being mixed in and gumming up the works. These files are different, and on a set of disks that said "Windows 1.03" on them with a letter saying it is OK to upload them to BBSes dated in 1988. So I thought I'd pass them along to see if they are helpful fleshing out the graphics card at all. Since I think they are kosher to redistribute, I've put them up at github at https://github.com/bsdimp/rainbow100.git
for all to enjoy. I have no clue how to install them or anything like that.