When I got this computer, It had no system disks with it. Somebody made me a copy of the Rev. "E" system disks so I could test it out.
This is what I am using now.
I now have a "Vintage" Laptop that can run Teledisk so I will make a set of Rev. "A" system disks to try later today.
But I fear that Rev. "A" ROMS may be too old to work with a 9133H.
We shall see...