(1) the if_prom code needs to be cleaned up quite a bit
(right now it hard-codes client's ethernet address), and
(2) much of this code (esp: getsecs.c, netboot.c, newvers.sh,
rpcc.S) should be shared with other Alpha boot blocks,
and dev_net.[ch] should maybe go in libsa proper.
boot block, since it will be shared with the network boot block.
(2) Kill a.out support, since it never worked was never used, and will
never be.
(3) Add support for booting of ELF kernels, from Matt Thomas. (Currently
untested, but it compiles.)
Support for AXPpci CPUs,
Support for AlphaStation 600 CPUs,
new boot block structure, which requires an 'installboot'
program and works a lot like the NetBSD/sparc boot blocks.