LDPCS(8) (VAX-11/750) LDPCS(8)
NAME
ldpcs - load comet microcode
SYNOPSIS
/etc/ldpcs [ -f ] [ -v ] pcsfile
DESCRIPTION
Ldpcs loads microcode from pcsfile into the VAX-11/750
patchable control store. Normally, the hardware ID register
is checked to see that the system is an 11/750 and that its
base microcode revision level is appropriately high; the -f
option removes the checks. The -v option causes the
microcode version number to be printed after loading.
Ldpcs is usually called from rc(8) to load the most recent
DEC microcode patches from
The patch file consists of 1024 bytes of patch bits, fol-
lowed by 10240 bytes of actual patches. Each patch bit rep-
resents a 20-bit microcode word; the patches themselves are
20-bit words packed together. The format is the same as
that distributed by DEC.
FILES
BUGS
Calling ldpcs is a good idea, but it is not mandatory; the
system will run without the patches.