I did try that option too. It did not help.
Interestingly, I do not lose another 512k of FAST RAM when I actually do map a ROM (booting into Kickstart 3.1) so it would seem the 512k I am losing under WB 1.3 is being "reserved" but not used.
Originally Posted by Schoenfeld
Enable "add other onboard RAM" - this will add the 512k that are normally used for Maprom.