Owner manual

DS4830 User’s Guide
218
XCH Exchange Accumulator Bytes
Description: Exchanges the upper and lower bytes of the active accumulator.
Status Flags: S
Operation: Acc.[15:8]  Acc.[7:0]
Acc.[7:0]  Acc.[15:8]
Encoding: 15 0
1000
1010
1000
1010
Example(s): ; Acc = 2345h
XCH ; Acc = 4523h
XCHN Exchange Accumulator Nibbles
Description: Exchanges the upper and lower nibbles in the active accumulator byte(s).
Status Flags: S
Operation: Acc.[7:4]  Acc.[3:0]
Acc.[3:0]  Acc.[7:4]
Acc.[15:12]  Acc.[11:8]
Acc.[11:8]  Acc.[15:12]
Encoding: 15 0
1000
1010
0111
1010
Example(s): ; Acc = 2345h
XCHN ; Acc = 3254h