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�:GROUPS OF <br />,OPERATIONS <br />''Repl.ace <br />'Add <br />;,..,��_ <br />� Group <br />ra Jump'� <br />oup:. <br />ump* GrouG <br />�itive <br />np* Group <br />gative, ' <br />np' Group <br />np; <br />OPERATION <br />CODE & MODE <br />54(d) <br />55(i) <br />56(fl <br />57(b) <br />6o(fl <br />64(b) <br />61(� <br />65(b) <br />62ffl <br />66(b) <br />63(f) <br />67(b) <br />70(i) <br />EXECUTION <br />TIME, µs EXPLANATION <br />19.2 <br />25.6 Form in A the sum, modulus 212 minus one, of the operand and one <br />19.2 Replace the operand with the result. <br />19.2 <br />6.4 If A contains all zeros, jump; otherwise obtain next instruction from ' <br />6.4 next sequential stor�ge location. <br />6.4 If A does not cantain all zeros, jump; otherwise obtain next instruction � <br />6.4 from next sequential storage location. <br />6.4 <br />6.4 <br />6.4 <br />6.4 <br />12.8 <br />rect <br />p Forward 71(fi) 12.8 <br />rect <br />at ,'. 72(fi) 12.8+12.8n <br />�mp causes a new sequence of instructions to be executed, <br />;ing at ttie Jump address, The Jump address in the 60•63 in- <br />:tlons�;s_obtained as P-}-E; in the 64•67 instructions as P-E. <br />� I I <br />If A is positive, jump; otherwise obt�in nex; <br />sequential storage location. <br />inst� .ction from next;< <br />If A is negative, jump; other�ise obtain nexY instruction from next ; <br />sequential storage location. <br />Obtain next instruction from location specified by contents of E. <br />E designates one of the first 64 storage locations. <br />Obtain next instruction from location specified by contents �f address ;�: <br />located E positioiis tollowing current instruction address (E+P) _ <br />Read into storage from selected input device successive units of m' <br />formation. Store them in sequential lo�ations beginning with starting :;. <br />address and running up to, but not inc(uding, terminating address : <br />Starting address specified as contenfs of storage locatian: E position� � <br />following current instruction address. Termineting address is speci � <br />fied as contents of storage location immediately fallowing input ins�ruc `' <br />tion. Next instructian is obtained from storage �address tvvo positions : <br />. ' <br />. „ „ ..' . ,.: <br />: . . .. . , ' _ , :. . <br />�---------- <br />