instruction code Val-Mod The instruction code 'Val-Mod' is an instruction code of the transsmt instruction set that pushes the remainder from integer division between the value from the top of the ?B? stack by the value at the top of the ?C? stak onto the B stack. This instruction code can be modified by one or two 'Nop' instruction codes, which specify which stacks are divided. If there is an arithmetic error caused by the division, the instructioncode fails and does not return a value.