Processor Status, DDATA Definition

Table 29-23. PST/DDATA Specification for MAC Instructions (continued)

Instruction

Operand Syntax

PST/DDATA

 

 

 

move.l

Accy,Rx

PST = 0x1

 

 

 

move.l

MACSR,CCR

PST = 0x1

 

 

 

move.l

MACSR,Rx

PST = 0x1

 

 

 

move.l

MASK,Rx

PST = 0x1

 

 

 

move.l

Accext01,Rx

PST = 0x1

 

 

 

move.l

Accext23,Rx

PST = 0x1

 

 

 

msac.l

Ry,Rx,Accx

PST = 0x1

 

 

 

msac.l

Ry,Rx,<ea>,Rw,Accx

PST = 0x1, {PST = 0xB, DD = source operand}

 

 

 

msac.w

Ry,Rx,Accx

PST = 0x1

 

 

 

msac.w

Ry,Rx,<ea>,Rw,Accx

PST = 0x1, {PST = 0xB, DD = source operand}

 

 

 

29.7.2 Supervisor Instruction Set

The supervisor instruction set has complete access to the user mode instructions plus the opcodes shown below. The PST/DDATA specification for these opcodes is shown in Table 29-24.

Table 29-24. PST/DDATA Specification for Supervisor-Mode Instructions

Instruction

Operand Syntax

PST/DDATA

 

 

 

cpushl

 

PST = 0x1

 

 

 

halt

 

PST = 0x1,

 

 

PST = 0xF

 

 

 

move.w

SR,Dx

PST = 0x1

 

 

 

move.w

{Dy,#imm},SR

PST = 0x1, {PST = 0x3}

 

 

 

movec

Ry,Rc

PST = 0x1

 

 

 

rte

 

PST = 0x7, {PST = 0xB, DD = source operand}, {PST = 3},{ PST =0xB,

 

 

DD =source operand},

 

 

PST = 0x5, {[PST = 0x9AB], DD = target address}

 

 

 

stldsr.w

#imm

PST = 0x1, {PST = 0xA, DD = destination operand, PST = 0x3}

 

 

 

stop

#imm

PST = 0x1,

 

 

PST = 0xE

 

 

 

wdebug

<ea>y

PST = 0x1, {PST = 0xB, DD = source, PST = 0xB, DD = source}

 

 

 

The move-to-SR, STLDSR, and RTE instructions include an optional PST = 0x3 value, indicating an entry into user mode. Additionally, if the execution of a RTE instruction returns the processor to emulator mode, a multiple-cycle status of 0xD is signaled.

Similar to the exception processing mode, the stopped state (PST = 0xE) and the halted state (PST = 0xF) display this status throughout the entire time the ColdFire processor is in the given mode.

29-44

MCF5282 User’s Manual

MOTOROLA

Page 716
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Motorola MCF5282, MCF5281 user manual Supervisor Instruction Set, PST/DDATA Specification for Supervisor-Mode Instructions