1 files changed, 3 insertions(+), 2 deletions(-)

M ISA_spec.txt

@@ 1,4 1,4 @@
-Maddie's test ISA Version 1.0.4
+Maddie's test ISA Version 1.0.5
 
 
 Table of contents:


@@ 24,7 24,8 @@ also a 2 bit flags register for storing the condition flags.
 
 Behaviours: The only statefulness not directly controlled by programs is the
 interrupt toggle. Numbers are read as big endian. Hardware interrupts jump to
-zero, and push the prior program counter to the stack.
+zero, and push the prior program counter to the stack. Unknown opcodes are
+treated as a halt.
 
 Versioning: The versioning of this ISA follows semantic versioning, although
 given how many breaking changes it is likely to go though, the major version