Texas Instruments MSP50C6xx User Manual
Page 96
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Instruction Syntax and Addressing Modes
4-10
Table 4–3. Rx Bit Description
Rx
Operation
0
0
0
R0
0
0
1
R1
0
1
0
R2
0
1
1
R3
1
0
0
R4 or LOOP
1
0
1
R5 or INDEX
1
1
0
R6 or PAGE
1
1
1
R7 or STACK
Table 4–4. Addressing Mode Bits and {adrs} Field Description
Relative
Repeat
addressing mode encoding, adrs
Relative
Addressing
Modes
Clocks
clk
Words
w
Repeat
Operation
‡
clk
{adrs}
7
6
5
4
3
2
1
0
Modes
clk
w
clk
am
Rx (x = 0
…
7)
pm
Direct
†
2
2
n
R
+4
*dma16
0
0
0
Rx
0
0
Short relative
1
1
n
R
+2
*R6 + offset7
1
offset7
Relative to R5
1
1
n
R
+2
*Rx + R5
0
1
0
Rx
0
0
Long relative
†
2
2
n
R
+4
*Rx + offset16
0
0
1
Rx
0
0
Indirect
1
1
n
R
+2
*Rx
0
0
*Rx++
0
1
1
Rx
0
1
*Rx– –
0
1
1
Rx
1
0
*Rx++R5
1
1
† = dma16 and offset16 is the second word
‡ nR is RPT instruction argument
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