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Internal <br />' Conditionor Condition code— <br />Channel Equip. specifiesoperation <br />selection sQlection for selected <br />Code' 0 Code Code equipment <br />�—�wsu��a <br />Operation Index 3 bits I 3 bits I 9 bits <br />Code Designators <br />6 bits b=0 Base Execution Address <br />3 hits 15 bits <br />- 74:Q-SELECT. EX'fERNAL E4UIPMENT OR <br />INTERNAL COND17fON <br />• The channel activatc sub-instructions 74.1 throu�h <br />74.6 are interpretEd as follows (see illustration <br />below) : the leftmost 6 bits are the operation code, <br />the next 3 bits designate that this is an a�tivate <br />;<__ , sub-i;istruction (plus indica.ting the channel), and <br />�; <br />the last 15 bits indicate the initial address For <br />`t data storage in the buf�er operation. <br />x <br />,, <br />� <br />:i. .�.._ : .:�-. <br />;.Y . . . .. ... .. . . . . . <br />yi , Select Initial address for data <br />�', chann;els storage in buffering op^ration ` <br />:tx , <br />� � Gode .��% , 1=6:�. � � <br />} „' <br />r�; <br />,`�' Operation ' Index <br />� ' Code Designators Base Execution Address <br />�$ 6 bits b=1-6 15 bits <br />� <br />iL��,7 <br />� l 3 bits <br />�i� a �� � � <br />s` ti1 ''74� 1 74.6=ACTIVATE,�UFFER CHANNELS 7-6 <br />1 . ,. <br />Ja}'' il'r �I . ...�.. . : <br />�,� • The sense sub-inslruction 74.7 is interpreted as <br />rv � a <br />�'�,�ti� ^� ���follows (see illustration below): the most 6 bits <br />���" }, t are th� operation code, the next 3 � designate <br />���; 4 <br />� z that this is a sense sub-instruction, the next 3 bits <br />���� = are the cliannel or internal coiidition selection <br />� ys <br />�� {`„ code, the next 3 bits are thc equipxnent selection <br />��� . <br />�;� eode, and the last 9 bits specify the operation for <br />xz� �'�', <br />��„�, �' the selected equipment. <br />ti, <br />i <br />,�� J <br />"��g� �, � f� x . <br />'�t�� $ k r;1 �nteina� <br />4 i > t r �ondition or Condition cade- <br />�� ` ' � Channel Equip,. specifiesoperation <br />� � u� <br />��3r �4rth y; ` ` � salection selection `` for s;efected <br />� � , ��a� 7`' Code' Code - equipment <br />�'Y ?r n <br />g � � <br />{ Jt � .. . - .'' . � . <br />" Operation Index 3 bits I 3 bits � 9 bits <br />��5' � Code Designators <br />`= 6 bits b=7 Base Execution Addre�s <br />'*� y 3 bits 15 bits <br />A �t 4 <br />=�f`�, ; ...`�',4�7� SENSE El(TERN'AL OR� 1NTERNAL:,CONDITlON <br />-Y� P� .._ . . , <br />�h <br />i. 3 1 ' <br />§��"r�a � � � . � � . <br />�r} <br />� 1 <br />v3 <br />��.,��F . � . <br />' 1� <br />� <br />c� <br />;1i .. � �. . . �... . . . <br />��s � , <br />Fa��� > <br />����t �:u � < <br />k'��f I , r .., .. .. . , .. . . .. .. �. .. . . . . . . <br />. 7i.�`i, 1 : C . <br />� � . � �.. �. i <br />... . . ... .�. �i i 1. .. . .. <br />