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S3C72G9 Datasheet(PDF) 61 Page - Samsung semiconductor |
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S3C72G9 Datasheet(HTML) 61 Page - Samsung semiconductor |
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61 / 96 page  ))!%+'-!' CALL dst Operation: Operand Operation Summary Bytes Cycles ADR15 Call direct in page (15 bits) 3 4 Description: CALL calls a subroutine located at the destination address. The instruction adds three to the program counter to generate the return address and then pushes the result onto the stack, decrementing the stack pointer by six. The EMB and ERB are also pushed to the stack. Program execution continues with the instruction at this address. The subroutine may therefore begin anywhere in the full 32-Kbyte program memory address space. The LCALL instruction can be used in the all range (0000H-7FFFH) while the CALL instruction can be used in the only range (0000H-3FFFH). Operand Binary Code Operation Notation ADR15 1 1 0 1 1 0 1 0 [(SP-1) (SP-2)] ← EMB, ERB 0 a14 a13 a12 a11 a10 a9 a8 [(SP-3) (SP-4)] ← PC7-0 a7 a6 a5 a4 a3 a2 a1 a0 [(SP-5) (SP-6)] ← PC14-8 Example: The stack pointer value is 00H and the label 'PLAY' is assigned to program memory location 5E3FH. Executing the instruction LCALL PLAY at location 0123H will generate the following values: SP = 0FAH 0FFH = 0H 0FEH = EMB, ERB 0FDH = 2H 0FCH = 3H 0FBH = 0H 0FAH = 1H PC = 5E3FH Data is written to stack locations 0FFH–0FAH as follows: 0FAH PC11 – PC8 0FBH 0 PC14 PC13 PC12 0FCH PC3 – PC0 0FDH PC7 – PC4 0FEH 0 0 EMB ERB 0FFH 0 0 0 0 |
Similar Part No. - S3C72G9 |
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Similar Description - S3C72G9 |
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