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S3C9442 Datasheet(PDF) 29 Page - Samsung semiconductor |
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S3C9442 Datasheet(HTML) 29 Page - Samsung semiconductor |
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29 / 50 page  S3C9442/C9444/F9444/C9452/C9454/F9454 SAM88RCRI INSTRUCTION SET 6-29 LDC/LDE — Load Memory LDC/LDE dst,src Operation: dst ← src This instruction loads a byte from program or data memory into a working register or vice-versa. The source values are unaffected. LDC refers to program memory and LDE to data memory. The assembler makes "Irr" or "rr" values an even number for program memory and odd an odd number for data memory. Flags: No flags are affected. Format: Bytes Cycles Opcode (Hex) Addr Mode dst src 1. opc dst | src 2 10 C3 r Irr 2. opc src | dst 2 10 D3 Irr r 3. opc dst | src XS 3 12 E7 r XS [rr] 4. opc src | dst XS 3 12 F7 XS [rr] r 5. opc dst | src XL L XL H 4 14 A7 r XL [rr] 6. opc src | dst XL L XL H 4 14 B7 XL [rr] r 7. opc dst | 0000 DA L DA H 4 14 A7 r DA 8. opc src | 0000 DA L DA H 4 14 B7 DA r 9. opc dst | 0001 DA L DA H 4 14 A7 r DA 10. opc src | 0001 DA L DA H 4 14 B7 DA r NOTES: 1. The source (src) or working register pair [rr] for formats 5 and 6 cannot use register pair 0–1. 2. For formats 3 and 4, the destination address "XS [rr]" and the source address "XS [rr]" are each one byte. 3. For formats 5 and 6, the destination address "XL [rr]" and the source address "XL [rr]" are each two bytes. 4. The DA and r source values for formats 7 and 8 are used to address program memory; the second set of values, used in formats 9 and 10, are used to address data memory. |
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