* After examining MacOS toolbox roms, I think i've got
this nailed down. The MacOS Toolbox rom contains chrp
code at the top and binary code at the bottom.
* The Raw format for the chrp seemed to cause issues with the
OpenFirmware boot process on some systems. NetBSD uses a '-'
file type.
* The format of the chrp seems a lot more sensitive across machines
than described. Ensure our returns and spaces are even.
* Booting with the 'c' key is still working on my older OpenFirmware
machine with the chrp script. The bitmap logo is a half black, half
white box.
* I removed the &device; alias for now for troubleshooing. It also may
of been causing compatibility issues. More testing is needed.