8085 "CALL" instruction set- number of Tstates

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Swag

Joined Apr 10, 2015
8
CALL instruction has got 5machine cycles but how come it has got 18 T-states.
(1)for opcode fetch--> [=4]
(2)the 16bit address after CALL is read during M1 and M2 cycles and stored temporarily in W/Z register -->[read:3+3=6)
(3)in next 2 cycles M3 & M4, contents of Program Counter are stored in stack -->[write: 3+3=6]
Am getting total of 16Tstates; Can u please help how to get 18Tstates
 
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