DR805x Instructions set details
- 76 -
3.43.
XCHD
XCHD A, @Ri
Exchange digit
XCHD exchanges the low-order nibble of the accumulator (bits 3-0,
generally representing a hexadecimal or BCD digit), with that of the
internal RAM location indirectly addressed by the specified register. The
high-order nibbles (bits 7-4) of each register are not affected. No flags
are affected.
(PC)
←
(PC) + 1
(A3-0)
↔
((Ri)3-0)
1
3
Instruction:
Function:
Description:
Operation:
Bytes:
Cycles:
Encoding:
1
1
0
1
0
1
1
i
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