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iocla:cursuri:curs-03 [2018/10/15 16:24] dragos.niculescu [Demo-uri] |
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| - | ====== Curs 03: Reprezentarea datelor în sistemele de calcul ====== | ||
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| - | <html> | ||
| - | <iframe src="https://docs.google.com/viewer?url=http://elf.cs.pub.ro/asm/res/cursuri/IOCLA_curs_03_Reprezentarea_datelor.pdf&embedded=true" width="600" height="480" style="border: none;"> | ||
| - | </iframe> | ||
| - | </html> | ||
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| - | * [[http://elf.cs.pub.ro/asm/res/cursuri/IOCLA_curs_03_Reprezentarea_datelor.pdf|Curs 03: Reprezentarea datelor în sistemele de calcul (PDF)]] | ||
| - | * [[http://elf.cs.pub.ro/asm/res/cursuri/IOCLA_curs_03_Reprezentarea_datelor-notes3on1.pdf|Curs 03: Reprezentarea datelor în sistemele de calcul (handout: 3on1 notes)]] | ||
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| - | * Suport curs | ||
| - | * Sivarama P. Dandamudi: Introduction to Assembly Language Programming | ||
| - | * Appendix A: Internal Data Representation: A.1, A.2, A.3, A.4.4, A.7, A.8, A.9 | ||
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| - | ===== Demo-uri ===== | ||
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| - | <code bash> | ||
| - | git clone https://github.com/iocla/curs-03-demo.git | ||
| - | </code> și apoi compilăm/asamblăm<code bash> | ||
| - | cd curs-03-demo; make | ||
| - | </code> | ||
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| - | The demo adds two bytes. | ||
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| - | For signed/unsigned operations, watch flags C(arry) and O(verflow). | ||
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| - | Presence of a flag means result is in the allowed interval. | ||
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| - | Absence of a flag means the operation is within the allowed interval. | ||
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| - | 0x2 + 0x2 | ||
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| - | 0xff + 1 | ||
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| - | 0xff + 0xff | ||
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| - | 0xfe + 7 | ||
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| - | 0x7f + 0x81 vs. 0x7f + 1 | ||
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| - | 0x7f + 0x7f vs 0x7f + 0x80 | ||
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| - | Exercises for C and O - find a pair that activates: | ||
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| - | * none | ||
| - | * only C | ||
| - | * only O | ||
| - | * both | ||
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