Move ILEN definition to introduction

1 files changed, 0 insertions, 9 deletions

diff --git a/src/extensions.tex b/src/extensions.tex
index efd0760..4346422 100644
--- a/src/extensions.tex
+++ b/src/extensions.tex
@@ -52,15 +52,6 @@ example, the base ISA is defined within a 30-bit encoding space (bits
 31--2 of the 32-bit instruction), while the atomic extension ``A''
 fits within a 25-bit encoding space (bits 31--7).
 
-We use the term ILEN to refer to the maximum instruction length supported
-by an implementation, which is always a multiple of 16 bits.  For
-implementations supporting only the base instruction set, ILEN is 32 bits.
-Implementations supporting longer instructions have larger values of ILEN.
-ILEN is implied from the set of extensions implemented, or can be
-explicitly defined in the platform configuration if an implementation is
-designed to support an extension that uses longer instructions via software
-emulation but does not actually decode longer instructions in hardware.
-
 We use the term {\em prefix} to refer to the bits to the {\em right}
 of an instruction encoding space (since RISC-V is little-endian, the
 bits to the right are stored at earlier memory addresses, hence form a