JOHNNIAC Instruction Timing as of 6-6-55

Op     Time (micro seconds)
----------------------------------

Fetch          29 

000 NOP        30 

004 LDQ        36 

00X TR(Cond)   31 

01X TR(Uncond) 39 

02X ADD        80 

03X MPY        1400  (max)

04X DIV        1400  (max)

05X STO        35 

06X STQ        90 

07X Shift      15 + 18n 

100 SEL        Input device dependent

105 HUT        Hoot

11X RD/WD      Drum I/O

12X Logical    80 

13X Halt



JOHNNIAC Instruction Timing per Cliff Shaw

               Time (micro seconds)
Op Class      3-30-62        4-16-62
-------------------------------------

Fetch         27.9           28.1 

00X           35.0           35.0 

01X           35.6           35.7 

02X           38.0           36.4 

03X           388.2-536.0    381.2-474.3 

04X           538.0-539.6    471.8-474.0 

05X           35.7           35.9 

06X           54.7           53.0 

07X           19.2 + 8.5n    19.2 + 8.4n 
                            
104(Setting 9)14.8           14.6 

105           14.2           14.2 

12X           38.0           36.4 


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