SLAU144K 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
CALL | Call a subroutine in lower 64KB | |
Syntax |
CALL dst | |
Operation | dst → PC 16-bit dst is evaluated and stored SP – 2 → SP PC → @SP updated PC with return address to TOS tmp → PC saved 16-bit dst to PC | |
Description | A subroutine call is made from an address in the lower 64KB to a subroutine address in the lower 64KB. All seven source addressing modes can be used. The call instruction is a word instruction. The return is made with the RET instruction. | |
Status Bits | Status bits are not affected. PC.19:16 cleared (address in lower 64KB) | |
Mode Bits | OSCOFF, CPUOFF, and GIE are not affected. | |
Examples | Examples for all addressing modes are given. | |
Immediate Mode: Call a subroutine at label EXEC (lower 64KB) or call directly to address. |
CALL #EXEC ; Start address EXEC
CALL #0AA04h ; Start address 0AA04h
Symbolic Mode: Call a subroutine at the 16-bit address contained in address EXEC. EXEC is located at the address (PC + X) where X is within PC + 32 K. |
CALL EXEC ; Start address at @EXEC. z16(PC)
Absolute Mode: Call a subroutine at the 16-bit address contained in absolute address EXEC in the lower 64KB. |
CALL &EXEC ; Start address at @EXEC
Register mode: Call a subroutine at the 16-bit address contained in register R5.15:0. |
CALL R5 ; Start address at R5
Indirect Mode: Call a subroutine at the 16-bit address contained in the word pointed to by register R5 (20-bit address). |
CALL @R5 ; Start address at @R5