It's unclear either from the description or from the diagrams as to what you are trying to do. How about a hex string of before, and another after?
Anyway, for shifting 4 bits to the left, MVO comes to mind. For collecting the low order 4 bits of each byte, MVN comes to mind, and ditto for the high-order 4 bits of each byte, MVZ. For placing the extracted 4-bit fields in adjacent positions, PACK is good. ----- Original Message ----- From: <esst...@juno.com> To: <ASSEMBLER-LIST@LISTSERV.UGA.EDU> Sent: Friday, 29 March 2013 7:20 AM Subject: Shifting The High Order Bits
does anyone have a routine, or event know an instruction that would shift the high order bits of "n" bytes either 8 bits of 4 bits to the left as a unit: for example X 'D48199838840F2F96bF2F0F1F340' D89884FF6FFFF4 41938029B20130 then shift the high order bits to the left 89884FF6FFFF40 41938029B20130 Paul D'Angelo
