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Instruction Classification
4-38
Table 4–27. Class 5 Instruction Description (Continued)
C5
Mnemonic
Description
1 1 1 1
0
RPT {
adrs}
8
Load repeat counter with lower 8 bits of data memory location referred by
addressing mode {
adrs}. Interrupts are queued during execution.
1 1 1 1
1
MOV STAT, {
adrs}
Load status (STAT) register with effective data memory location referred
by addressing mode {
adrs} (17 bits with TAG).
4.4.6
Class 6 Instructions: Port and Memory Reference
These instructions provide the basic expansion port of the MSP50P614/
MSP50C614 processor. IN instructions transfer 16-bit data from one of 16
expansion ports. OUT instructions transfer 16-bit data to one of the 16
expansion ports. In a typical system, the expansion ports are divided into those
that serve internal peripheral functions and those that serve external pins. For
subclass 6b, IN and OUT provide bidirectional transfers between the same
port address (16) and accumulator. In addition, IN and OUT instructions in
class 6b can communicate with an extra 48 ports (a total of 64 including the
shared ports). Class 6b instructions also have reference to the string bit for
checking the arithmetic status of a string transfer.
Table 4–28. Class 6a Instruction Encoding
Bit
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Class 6a
1
1
0
0
C6a
port4
adrs
Class 6b
1
1
1
0
1
1
s
A
n
port6
C6b
~A~
Table 4–29. Class 6a Instruction Description
C6a
Mnemonic
Description
0
IN {
adrs}, port4
Transfer a 16 bit value of addressed port to data memory location referred
by addressing mode {
adrs}. Refer to port address map. Transfer status is
modified.
1
OUT
port4, {adrs}
Transfer a 16 bit value in the data memory location referred by addressing
mode {
adrs} to addressed port. Refer to Port address map. Transfer is sta-
tus modified.
Summary of Contents for MSP50C614
Page 1: ...MSP50C614 Mixed Signal Processor User s Guide SPSU014 January 2000 Printed on Recycled Paper ...
Page 6: ...vi ...
Page 92: ...3 22 ...
Page 300: ...Instruction Set Summay 4 208 Assembly Language Instructions ...
Page 314: ...Software Emulator 5 14 Figure 5 13 Project Menu Figure 5 14 Project Open Dialog ...
Page 325: ...Software Emulator 5 25 Code Development Tools Figure 5 25 EPROM Programming Dialog ...
Page 331: ...Software Emulator 5 31 Code Development Tools Figure 5 31 Context Sensitive Help System ...
Page 368: ...5 68 ...
Page 394: ...7 12 ...
Page 402: ...A 8 ...
Page 412: ...Packaging B 10 ...