From 61f6f03f7a9878cd3c72ba76e45d8b4ddce3d332 Mon Sep 17 00:00:00 2001 From: lkcl Date: Mon, 16 Nov 2020 21:12:39 +0000 Subject: [PATCH] --- openpower/sv/16_bit_compressed.mdwn | 2 ++ 1 file changed, 2 insertions(+) diff --git a/openpower/sv/16_bit_compressed.mdwn b/openpower/sv/16_bit_compressed.mdwn index 5dac0e1e4..26dc869c2 100644 --- a/openpower/sv/16_bit_compressed.mdwn +++ b/openpower/sv/16_bit_compressed.mdwn @@ -1,5 +1,7 @@ # 16 bit Compressed +Similar to VLE (but without immediate-prefixing) this encoding is designed to fit on top of OpenPOWER ISA v3.0B when a "Modeswitch bit" is set (PCR is recommended). Note that it is *mutually exclusively incompatible* with OoenPOWER v3.1B "prefixing" due to using (requiring) both EXT000 and EXT001. Hypothetically it could be made to use anything other than EXT001, with some inconvenience (extra gates). The incompatibility is "fixed" by swapping out of "Compressed" Mode and back into "Normal" (v3.1B) Mode, at runtime, as needed. + See: * -- 2.30.2