Description:

Negate the top short on the stack.

Pseudo Code:

stack[sp - 2] = - ((short) stack[sp - 2])
pc = pc + 1

Flags Affected:

D	H	C	Z	N

Possible Errors:

tvmStackUnderflow

-

There were not enough bytes in the stack.

Example:

negs

Before stack   top 1 0x0C 2 0xFE   bottom

After stack   top 1 0xF4 2 0x01   bottom