A few years ago I was playing around with the Infocom Interpreter, trying to make it compatible with the F18A 80 column mode. In the original 80 column interpreter, the pattern descriptor table was relocated to VRAM bank #1, something that only exists with a V9938 configuration.
The attached disk contains a version of the interpreter (ZORKF18A) modified to work within the constraints of the original 16K of VRAM. I have tested the program with both Classic99 and js99er. I do not currently have my F18A system up and running, so it would be helpful if someone would give this a whirl on the real hardware.
Thanks to Shift838 for his help gathering the missing details to make this possible.
If successful, I will update the other interpreter(s) that are needed for the ported games.
(The game files have been validated using the $VERIFY command)