Do you have evidence indicating that the original
remote actually sends out a signal when you press
VCR A or VCR B? It's much more likely that the
VCR A and VCR B buttons switch modes of the
REMOTE, not the console. To prove this to
yourself, start by pressing VCR A on the original
remote, and then completely covering the IR
emitter of the remote, and pressing VCR B. If,
after doing this, you find the remote is
controlling VCR B, then you know the REMOTE
switches modes, whereas if you find it is
controlling VCR A then you'll know the CONSOLE
switches modes, which is extremely unlikely.

Assuming the former scenario is what transpires,
which I feel is a very safe assumption, there can
be no advanced codes for VCR A and VCR B. What
you need are two DEVICE codes, one for VCR A and
one for VCR B.

Assuming you can find two such codes, I'd suggest
putting one on the VCR button, and one on the
DVD/LD button, assuming you don't have a DVD or
LD already using it.

-=Ingenious=-