In article <OE19jo09kKhW2wkj2A000001cd5@hotmail.com>
h0ho@hotmail.com wrote:

> I just created my cross-compile environment and actually compiled
> the tool-chain. The MACHINE_ARCH required is sh3el. Does the dreamcats
> port use instruction set from the Sh4 cpu or does it only use Sh3
> instructions, backward compatible on Sh4 ?

What do you mean "backward compatible on Sh4"?
AFAIK, instruction sets between SH3 and SH4 are mostly same
at least on userland. Most instructions added on SH4 are
for the privileged mode (cache control etc.)
---
Izumi Tsutsui
tsutsui@ceres.dti.ne.jp