ZOZ instruction format - page 2

A ZOZ instruction, "A -> B", consists of two numbers, a source serial number or absolute number and a destination serial number, both formatted exactly as just described.

The instruction is preceded by a header word containing metadata about the instruction, followed by a checksum of the entire instruction, followed by the two numbers in the format just given. Thus a ZOZ instruction is:

   IH , C0
   N1 , C1 , source number word 1 , ... , word N1 ,
   N2 , C2 ,  dest  number word 1 , ... , word N2.

All items here (between commas) are 16-bit words.

IH is the instruction header word, which includes a bit to specify whether the source number is a serial number or an absolute number.

C0 is the checksum of the entire instruction.

N1 and C1 are the length of the source serial number or absolute number, and its checksum; and words 1 through N1 are the number itself.

N2 and C2 and the rest are the destination serial number in the same format.

Thus we have 6 words of metadata in all, IH, C0, N1, C1, N2, and C2. The total length of the instruction is thus N1+N2+6 words.