Computer Hardware User's Guide

ManualsBrandsTexas Instruments ManualsNetwork CardTMS320C3x

471

472

473

474

475

476

477

478

479

480

Instruction Set Summary

13-15

Assembly Language Instructions

Table 13–8. Instruction Set Summary (Continued)

Mnemonic OperationDescription

RPTB Repeat block of instructions

src

→ RE

→ ST (RM)

Next PC

→ RS

RPTS Repeat single instruction

src

→ RC

→ ST (RM)

Next PC

→ RS

Next PC

→ RE

SIGI Signal, interlocked Signal interlocked operation

Wait for interlock acknowledge

Clear interlock

STF Store floating-point value R

→ Daddr

STFI Store floating-point value, interlocked R

→ Daddr

Signal end of interlocked operation

STI Store integer Sreg

→ Daddr

STII Store integer, interlocked Sreg

→ Daddr

Signal end of interlocked operation

SUBB Subtract integers with borrow Dreg –

src

– C → Dreg

SUBB3 Subtract integers with borrow (3-operand)

src

1 –

src

2 – C → Dreg

SUBC Subtract integers conditionally If Dreg –

src

≥ 0:

[(Dreg –

src

) << 1] OR 1 → Dreg

Else, Dreg << 1

→ Dreg

SUBF Subtract floating-point values R

–

src

→ R

SUBF3 Subtract floating-point values (3-operand)

src

1 –

src

2 → R

Legend: AR

auxiliary register

(AR7–AR0) RE repeat interrupt register

C carry bit RM repeat mode bit

src

conditional-branch addressing modes R

count

shift value (general addressing modes) RS repeat start register

cond

condition code SP stack pointer

Daddr destination memory address Sreg register address (any register)

Dreg register address (any register) ST status register

GIE global interrupt enable register

src

general addressing modes

N any trap vector 0–27

src

1 3-operand addressing modes

PC program counter

src

2 3-operand addressing modes

RC repeat counter register TOS top of stack