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HCS12 Fiches technique(PDF) 250 Page - Freescale Semiconductor, Inc |
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HCS12 Fiches technique(HTML) 250 Page - Freescale Semiconductor, Inc |
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250 / 452 page ![]() Instruction Glossary S12CPUV2 Reference Manual, Rev. 4.0 250 Freescale Semiconductor Operation: (SP) – $0002 ⇒ SP (XH : XL) ⇒ M(SP) :M(SP+1) Description: Stacks the content of index register X. The stack pointer is decremented by two. The content of X is then stored at the address to which the SP points. After PSHX executes, the SP points to the stacked value of the high-order half of X. Push instructions are commonly used to save the contents of one or more CPU registers at the start of a subroutine. Complementary pull instructions can be used to restore the saved CPU registers just before returning from the subroutine. PSHX Push Index Register X onto Stack PSHX CCR Details: S X HIN Z V C –––––––– Source Form Address Mode Object Code Access Detail HCS12 M68HC12 PSHX INH 34 OS OS |
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