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IRQ is asserted to request CIS command by READY signal inversion ~ 1. 75 11s 2. 25 11 s A .Figure 6-60. Notes: 1. 0.5 11 s B' ~ Command Rejection Timing 1 Figure 6-60 is the timing chart for 8-inch mode. For 5-inch mode, the periods must be doubled (2.25 11s + 4.5 11s, 1. 75 ]..ls + 3.5 ]..ls, and 0.5 11s + 1. 0 ]..ls). 2. A: If a command is issued during this period, the FDC rejects it. B: If a command is issued during this period, the FDC accepts it, but the BSY bit of the STR remains cleared. 76 HITACHI
