Well I've run 1.5 on a 4000/60 with 104MB and it worked fine. It was my 
build machine until I switched over to a 4000/90. To track down your panic 
several bits of information are necessary
         1) What kernel and userland are you running?
         2) Where did the kernel panic?
         3) What part of the kernel build process was it in?
         4) Did you try filling memory some other way to see if that 
panic'd it?
         5) How confident are you in your RAM?
         6) Do you have the latest toolchain?

--Chuck

At 02:40 AM 7/20/01 -0400, you wrote:
> > No, there is no 24M limit in the kernel. What type of system are you using
> > and can the system support 64 mb of ram?
>
>I'm running a VAXStation 4000/60 with 104 megs of memory. After my panic,
>I looked around on the NetBSD mailing list and found several emails
>discussing why VAX still had a 24 meg limit:
>
>http://195.148.172.4/~aw/vax/port-vax/msg01050.html
>
>(There is a bit of a thread in there)
>
>So, if the pmap stuff has finally been fixed, can anyone guess why I got a
>panic?
>
>Thanks,
>John Klos