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ST10F271 数据表(PDF) 48 Page - STMicroelectronics |
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ST10F271 数据表(HTML) 48 Page - STMicroelectronics |
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48 / 173 page  Central processing unit (CPU) ST10F271 48/173 7.3 MAC co-processor specific instructions The Table 27 lists the MAC instructions of the ST10F271. The detailed description of each instruction can be found in the “ST10 Family Programming Manual”. Note that all MAC instructions are encoded on 4 Bytes. CALLA, CALLI, CALLR Call absolute/indirect/relative subroutine if condition is met 4 CALLS Call absolute subroutine in any code segment 4 PCALL Push direct word register onto system stack and call absolute subroutine 4 TRAP Call interrupt service routine via immediate trap number 2 PUSH, POP Push/pop direct word register onto/from system stack 2 SCXT Push direct word register onto system stack and update register with word operand 4 RET Return from intra-segment subroutine 2 RETS Return from inter-segment subroutine 2 RETP Return from intra-segment subroutine and pop direct word register from system stack 2 RETI Return from interrupt service subroutine 2 SRST Software Reset 4 IDLE Enter Idle Mode 4 PWRDN Enter Power Down Mode (supposes NMI-pin being low) 4 SRVWDT Service Watchdog Timer 4 DISWDT Disable Watchdog Timer 4 EINIT Signify End-of-Initialization on RSTOUT-pin 4 ATOMIC Begin ATOMIC sequence 2 EXTR Begin EXTended Register sequence 2 EXTP(R) Begin EXTended Page (and Register) sequence 2 / 4 EXTS(R) Begin EXTended Segment (and Register) sequence 2 / 4 NOP Null operation 2 Table 26. Standard instruction set summary (continued) Mnemonic Description Bytes Table 27. MAC instruction set summary Mnemonic Description CoABS Absolute Value of the Accumulator CoADD(2) Addition CoASHR(rnd) Accumulator Arithmetic Shift Right & Optional Round CoCMP Compare Accumulator with Operands |
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