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Appendix
LCALL
Long Subroutine Call
| Description |
The LCALL instruction calls a subroutine located at the specified address. This instruction first adds 3 to the PC to generate the address of the next instruction. This result is pushed onto the stack low-byte first and the stack pointer is incremented by 2. The high-order and low-order bytes of the PC are loaded from the second and third bytes of the instruction respectively. Program execution is transferred to the subroutine at this address. No flags are affected by this instruction. |
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| See Also | ACALL, RET |
| LCALL address | |||||||
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| Bytes | 3 | |
| Cycles | 2 | |
| Encoding | 00010010, A15-A8, A7-A0 | |
| Operation |
LCALL PC = PC + 3 SP = SP + 1 (SP) = PC7-0 SP = SP + 1 (SP) = PC15-8 PC = address |
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| Example |
LCALL SUB1 |
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