Usage: XCHG dest,src Modifies flags: None Exchanges contents of source and destination. Clocks Size Operands 808x 286 386 486 Bytes reg,reg 4 3 3 3 2 mem,reg 17+EA 5 5 5 2-4 (W88=25+EA) reg,mem 17+EA 5 5 3 2-4 (W88=25+EA) accum,reg 3 3 3 3 1 reg,accum 3 3 3 3 1 - see Instruction Timing