Stereo System User Manual

Individual Instruction Descriptions
4-122
4.14.31 MOVB Move Byte From Source to Destination
Syntax
[label] name dest, src Clock, clk Word, w With RPT, clk Class
MOVB A n , { adrs } Table 4–46 Table 4–46 1b
MOVB { adrs }, A n Table 4–46 Table 4–46 1b
MOVB A n , imm8 1 1 N/R 2a
MOVB MR, imm8 1 1 N/R 2a
MOVB R x , imm8 1 1 N/R 2b
Execution dest ⇐ src
PC ⇐ PC + w
Flags Affected dest is A n : OF, SF, ZF, CF are set accordingly
dest is R x : 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 A n , { adrs }
0 1 0 0 1 1 0 A n adrs
x dma16 (for direct) or offset16 (long relative) [see section 4.13]
MOVB { adrs }, A n
0 1 0 1 0 0 0 A n adrs
x dma16 (for direct) or offset16 (long relative) [see section 4.13]
MOVB A n , imm8 1 0 1 0 0 0 1 A n imm8
MOVB MR, imm8 1 0 1 0 1 1 1 A n imm8
MOVB R x , imm8 1 0 1 1 1 0 k4 k3 k2 k7 k6 k5 R x k1 k0
Description Copy value of unsigned src byte to dest byte.
Syntax Description
MOVB A n , { adrs } Move data memory byte to A n
†
MOVB { adrs }, A n Move A n byte to data memory
MOVB A n , imm8 Move immediate byte to A n
†
MOVB MR, imm8 Move immediate byte to multiply register (MR)
‡
MOVB R x , imm8 Move immediate byte to R x
†
Zeros loaded to upper 8 bits of A n .
‡
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.