26.1.28.13 Instruction pokelu

Synopsys:

pokelu ENDIAN,BITS

Given an IOS descriptor, a bit-offset and an unsigned long value of BITS bits, poke it. Use the endianness specified in the instruction arguments.

In case of an error, this instruction pushes an exception describing the error condition. Otherwise it pushes PVM_NULL.

Stack: ( INT ULONG ULONG -- EXCEPTION|null)