ZHCU032K December 2004 – August 2022 MSP430AFE221 , MSP430AFE222 , MSP430AFE223 , MSP430AFE231 , MSP430AFE232 , MSP430AFE233 , MSP430AFE251 , MSP430AFE252 , MSP430AFE253 , MSP430F2001 , MSP430F2002 , MSP430F2003 , MSP430F2011 , MSP430F2012 , MSP430F2013 , MSP430F2101 , MSP430F2111 , MSP430F2112 , MSP430F2121 , MSP430F2122 , MSP430F2131 , MSP430F2132 , MSP430F2132-EP , MSP430F2232 , MSP430F2234 , MSP430F2252 , MSP430F2252-Q1 , MSP430F2254 , MSP430F2272 , MSP430F2272-Q1 , MSP430F2274 , MSP430F2274-EP , MSP430F233 , MSP430F2330 , MSP430F235 , MSP430F2350 , MSP430F2370 , MSP430F2410 , MSP430F2416 , MSP430F2417 , MSP430F2418 , MSP430F2419 , MSP430F247 , MSP430F2471 , MSP430F248 , MSP430F2481 , MSP430F249 , MSP430F2491 , MSP430F2616 , MSP430F2617 , MSP430F2618 , MSP430F2619 , MSP430G2001 , MSP430G2101 , MSP430G2102 , MSP430G2111 , MSP430G2112 , MSP430G2121 , MSP430G2131 , MSP430G2132 , MSP430G2152 , MSP430G2153 , MSP430G2201 , MSP430G2201-Q1 , MSP430G2202 , MSP430G2203 , MSP430G2210 , MSP430G2211 , MSP430G2212 , MSP430G2213 , MSP430G2221 , MSP430G2230 , MSP430G2231 , MSP430G2231-Q1 , MSP430G2232 , MSP430G2233 , MSP430G2252 , MSP430G2253 , MSP430G2302 , MSP430G2303 , MSP430G2312 , MSP430G2313 , MSP430G2332 , MSP430G2333 , MSP430G2352 , MSP430G2353 , MSP430G2402 , MSP430G2403 , MSP430G2412 , MSP430G2413 , MSP430G2432 , MSP430G2433 , MSP430G2444 , MSP430G2452 , MSP430G2453 , MSP430G2513 , MSP430G2533 , MSP430G2544 , MSP430G2553 , MSP430G2744 , MSP430G2755 , MSP430G2855 , MSP430G2955 , MSP430TCH5E
RETI | 从中断返回 | ||
句法 | RETI | ||
操作 | @SP → SR.15:0 SP + 2 → SP | 用 PC.19:16 恢复保存的 SR | |
@SP → PC.15:0 SP + 2 → SP | 恢复保存的 PC.15:0 辅助控制 | ||
说明 | SR 被恢复至中断处理例程的开始值。这包括 PC.19:16 的四个 MSB。之后 SP 被加 2。 20 位 PC 从 PC.19:16(从与状态位相同的堆栈位置)和 PC.15:0 恢复。20 位 PC 被恢复至中断处理例程的开始值。当中断被批准后,程序继续在最后一个被执行指令之后的地址上执行。之后,SP 被加 2。 | ||
状态位 | N: | 从堆栈恢复 | |
C: | 从堆栈恢复 | ||
Z: | 从堆栈恢复 | ||
V: | 从堆栈恢复 | ||
模式位 | OSCOFF,CPUOFF 和 GIE 从堆栈恢复。 | ||
示例 | 低 64KB 内的中断处理器一个 20 位返回地址被存储在堆栈上。 |
INTRPT PUSHM.A #2,R14 ; Save R14 and R13 (20-bit data)
... ; Interrupt handler code
POPM.A #2,R14 ; Restore R13 and R14 (20-bit data)
RETI ; Return to 20-bit address in full memory range