## MAX : MAXimum

__Short form :__
The value of the destination register (src1) is compared with the value of the
source register (src2). If src2>src1, then the value of src2 is written to src1.

__Long form :__
The value of the immediate field (sign-extended Imm16) is compared with the value of the
source register (src2). If src2>Imm16, then the value of Imm16 is written to src1.

The MINimum instruction is identical but with a reversed condition.

The comparison uses the 2s-complement arithmetic.

MAX R1 R2 ; If R1>R2 then R1->R2
MAX R1 1234h R2 ; If R1>1234h then 1234h->R2
MIN R1 R2 ; If R1<R2 then R1->R2
MIN R1 1234h R2 ; If R1<1234h then 1234h->R2