Calls to a subroutine within the entire 4M (words) Program memory. The return address (to the instruction after the CALL) will be stored onto the Stack. See also RCALL. The Stack Pointer uses a post-decrement scheme during CALL.
This instruction is not available in all devices. Refer to the device specific instruction set summary.
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Operation: |
Comment: | |||
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(i) |
PC(15:0) ← Z(15:0) |
Devices with 16-bit PC, 128KB Program memory maximum. |
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(ii) |
PC(15:0) ← Z(15:0) PC(21:16) ← 0 |
Devices with 22-bit PC, 8MB Program memory maximum. |
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Syntax: |
Operands: |
Program Counter: |
Stack: |
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(i) |
ICALL |
None |
See Operation |
STACK ← PC + 1 SP ← SP - 2 (2 bytes, 16 bits) |
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(ii) |
ICALL |
None | See Operation |
STACK ← PC + 1 SP ← SP - 3 (3 bytes, 22 bits) |
16-bit Opcode:
| 1001 | 0101 | 0000 | 1001 |