Shift/Rotate Instructions - Motorola MC68340 User Manual

Integrated processor with dma

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5.7.3.9 SHIFT/ROTATE INSTRUCTIONS. The shift/rotate instruction table indicates the

number of clock periods needed for the processor to perform the specified operation on

the given addressing mode. Footnotes indicate when to account for the appropriate EA

times. The number of bits shifted does not affect the execution time, unless noted. The

total number of clock cycles is outside the parentheses. The numbers inside parentheses

(r/p/w) are included in the total clock cycle number. All timing data assumes two-clock

reads and writes.

d = Direction (left or right)

1. Head and cycle times can be derived from the following table or calculated as follows:

2. Head and cycle times are calculated as follows: (count

3. Head and cycle times are calculated as follows: (count

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mod (n,2), 6).

Shift Counts