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S3C9442 Datasheet(PDF) 32 Page - Samsung semiconductor |
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S3C9442 Datasheet(HTML) 32 Page - Samsung semiconductor |
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32 / 50 page  SAM88RCRI INSTRUCTION SET S3C9442/C9444/F9444/C9452/C9454/F9454 6-32 LDCI/LDEI — LOAD MEMORY AND INCREMENT LDCI/LDEI dst,src Operation: dst ← src rr ← rr + 1 These instructions are used for user stacks or block transfers of data from program or data memory to the register file. The address of the memory location is specified by a working register pair. The contents of the source location are loaded into the destination location. The memory address is then incremented automatically. The contents of the source are unaffected. LDCI refers to program memory and LDEI refers to external data memory. The assembler makes "Irr" even for program memory and odd for data memory. Flags: No flags are affected. Format: Bytes Cycles Opcode (Hex) Addr Mode dst src opc dst | src 2 10 E3 r Irr Examples: Given: R6 = 10H, R7 = 33H, R8 = 12H, program memory locations 1033H = 0CDH and 1034H = 0C5H; external data memory locations 1033H = 0DDH and 1034H = 0D5H: LDCI R8,@RR6 ; 0CDH (contents of program memory location 1033H) is loaded ; into R8 and RR6 is incremented by one (RR6 ← RR6 + 1) ; R8 = 0CDH, R6 = 10H, R7 = 34H LDEI R8,@RR6 ; 0DDH (contents of data memory location 1033H) is loaded ; into R8 and RR6 is incremented by one (RR6 ← RR6 + 1) ; R8 = 0DDH, R6 = 10H, R7 = 34H |
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