31 movb move byte from source to destination – Texas Instruments MSP50C6xx User Manual
Page 209
Individual Instruction Descriptions
4-123
Assembly 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.