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HCS12 데이터시트(PDF) 82 Page - Freescale Semiconductor, Inc |
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HCS12 데이터시트(HTML) 82 Page - Freescale Semiconductor, Inc |
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82 / 452 page ![]() S12CPUV2 Reference Manual, Rev. 4.0 82 Freescale Semiconductor 5.24 Stacking Instructions The two types of stacking instructions, are shown in Table 5-24. Stack pointer instructions use specialized forms of mathematical and data transfer instructions to perform stack pointer manipulation. Stack operation instructions save information on and retrieve information from the system stack. Table 5-24. Stacking Instructions Mnemonic Function Operation Stack Pointer Instructions CPS Compare SP to memory (SP) – (M : M + 1) DES Decrement SP (SP) – 1 ⇒ SP INS Increment SP (SP) + 1 ⇒ SP LDS Load SP (M : M + 1) ⇒ SP LEAS Load effective address into SP Effective address ⇒ SP STS Store SP (SP) ⇒ M : M + 1 TSX Transfer SP to X (SP) ⇒ X TSY Transfer SP to Y (SP) ⇒ Y TXS Transfer X to SP (X) ⇒ SP TYS Transfer Y to SP (Y) ⇒ SP Stack Operation Instructions PSHA Push A (SP) – 1 ⇒ SP; (A) ⇒ M(SP) PSHB Push B (SP) – 1 ⇒ SP; (B) ⇒ M(SP) PSHC Push CCR (SP) – 1 ⇒ SP; (A) ⇒ M(SP) PSHD Push D (SP) – 2 ⇒ SP; (A : B) ⇒ M(SP) : M(SP+1) PSHX Push X (SP) – 2 ⇒ SP; (X) ⇒ M(SP) : M(SP+1) PSHY Push Y (SP) – 2 ⇒ SP; (Y) ⇒ M(SP) : M(SP+1) PULA Pull A (M(SP)) ⇒ A; (SP) + 1 ⇒ SP PULB Pull B (M(SP)) ⇒ B; (SP) + 1 ⇒ SP PULC Pull CCR (M(SP)) ⇒ CCR; (SP) + 1 ⇒ SP PULD Pull D (M(SP) : M(SP+1)) ⇒ A : B; (SP) + 2 ⇒ SP PULX Pull X (M(SP) : M(SP+1)) ⇒ X; (SP) + 2 ⇒ SP PULY Pull Y (M(SP) : M(SP+1)) ⇒ Y; (SP) + 2 ⇒ SP |
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