>>-+-------+--TRKADDR--RELTOABS--+-,cchh--+--,REG=(reg_pair)---><
   '-label-'                     '-,(reg)-'                    

Converts relative track number to absolute format (CCCCcccH). RELTOABS converts a relative track number to a 28-bit cylinder address form in the passed cchh field. The register must be the first in an even/odd pair. The odd register must contain the relative track number on the volume. The macro modifies both registers. In 24-bit and 31-bit addressing modes these are four-byte registers. In 64-bit mode, they are eight-byte registers.