I've not been able to boot the 1.5.2 release CD on a 7500 directly. 
Is that just me?  (Also not on a PowerBook (PDQ), but that was iffy 
anyway.)

I have been able to boot an MS-DOS floppy created by copying 
ofwboot.xcf and the install kernel to the floppy on a 7500 and a 
PowerBook (PDQ), but only by setting load-base to 500000 instead of 
the recommended 600000 in both cases.  I find this preferable to 
hunting up a way to create the official boot floppy under MacOS.
-- 
The opinions expressed in this message are mine,
not those of Caltech, JPL, NASA, or the US Government.
Henry.B.Hotz@jpl.nasa.gov, or hbhotz@oxy.edu