The "NetBSD/macppc nvedit HOW-TO" page states, "Note: some Open 
Firmware 1.0.5 systems do not have enough NVRAM storage for the 
System Disk patches in addition to a nvalias setting. You should 
probably keep the System Disk patches instead of the nvalias. "

So, I've replaced the 8K X 8 SRAM chip which is used for NVRAM with a 
32K X 8 SRAM chip.  If Apple implemented one pin that is unused on 
the 8K chip as an address line (engineers often leave things like 
that in a design to allow for late component changes) then this 
machine should now have at least 16K of total NVRAM capacity and 
possibly 32K.

But I have no idea how to check whether the capacity of the NVRAM has 
increased--and specifically the space available for the NVRAMrc file. 
So would someone tell me how to tell if I've increased the space 
available for NVRAMrc?   I'm not much of an OF hacker, so if there's 
a utility that can read it out, that would be great.  If not, I'll 
muddle through (and be greatful for) instructions on how to do so in 
the OF terminal.

Jeff Walther