74175_SOEN228-LabManual_revised[1]

74175_SOEN228-LabManual_revised[1] - 1 6.3. PROJECT 2 : The...

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1 6.3. PROJECT 2 : The Program Counter (PC) and The Arithmetic Unit Top of Figure 13 illustrates the breadboard chip layout for the Program Counter and the Arithmetic Unit (which only performs the “increment” function). The block diagram below the breadboard shows the details. Although the PC and the Arithmetic Unit are functionally independent of each other, both are discussed in this section because the PC uses the Arithmetic Unit for incrementing its contents. This discussion also helps understand how the BUS is used. Figure 13. The Program Counter and the Arithmetic Unit.
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First let’s construct the BUS. The BUS consists of four parallel conductor lines vertically traversing breadboards BB2 and BB3. You construct the BUS by interconnecting the conductor strips on both sides of each breadboard’s central groove, and by interconnecting the so formed bus segments across the two breadboards (see the upper part of Figure 13). The PC and the Arithmetic Unit exchange data through the BUS. Figure 13 shows the required data-flow connections on BB2. Although utilized in the Figure 13 , do not yet utilize the top-most slot row of the bus. As Figure 7 shows these
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This note was uploaded on 06/30/2011 for the course SOEN 228 taught by Professor T.fancott during the Winter '11 term at Concordia Canada.

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74175_SOEN228-LabManual_revised[1] - 1 6.3. PROJECT 2 : The...

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