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Individual Instruction Descriptions
4-123Assembly Language Instructions
4.14.31 MOVB Move Byte From Source to Destination
Syntax
[label] name dest, src Clock, clk Word, w With RPT, clk Class
MOVB An, {adrs} Table 4–46 Table 4–46 1b
MOVB {adrs}, An Table 4–46 Table 4–46 1b
MOVB An, imm8 1 1 N/R 2a
MOVB MR, imm8 1 1 N/R 2a
MOVB Rx, imm8 1 1 N/R 2b
Execution dest ⇐ src
PC ⇐ PC + w
Flags Affected dest is An: OF, SF, ZF, CF are set accordingly
dest is Rx: RCF, RZF are set accordingly
dest is {adrs}: XSF, XZF are set accordingly
src is {adrs} TAG bit is set accordingly
Opcode
Instructions 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
MOVB An, {adrs}
0 1 0 0 1 1 0 An adrs
x dma16 (for direct) or offset16 (long relative) [see section 4.13]
MOVB {adrs}, An
0 1 0 1 0 0 0 An adrs
x dma16 (for direct) or offset16 (long relative) [see section 4.13]
MOVB An, imm8 1 0 1 0 0 0 1 An imm8
MOVB MR, imm8 1 0 1 0 1 1 1 An imm8
MOVB Rx, imm8 1 0 1 1 1 0 k4 k3 k2 k7 k6 k5 Rx k1 k0
Description Copy value of unsigned src byte to dest byte.
Syntax Description
MOVB An, {adrs} Move data memory byte to An
†
MOVB {adrs}, An Move An byte to data memory
MOVB An, imm8 Move immediate byte to An
†
MOVB MR, imm8 Move immediate byte to multiply register (MR)
‡
MOVB Rx, imm8 Move immediate byte to Rx
†
Zeros loaded to upper 8 bits of An.
‡
Status flags are not modified
See Also MOVU, MOV, MOVT, MOVBS, MOVS
Example 4.14.29.1 MOVB A0, *R2
Copy data memory byte pointed by R2 to accumulator A0.