C$,$ D $12-11.$ Figure $\backslash (12-46\backslash )$ shows how data from a ROM can be transferred to an external register. The ROM has the following timing parameters: $\backslash ($ t$\_\{\backslash$mathrm$\{$ACC$\}\}=\backslash )250$ ns and $\backslash ($ t$\_\{\backslash$mathrm$\{$OE$\}\}=120\backslash$mathrm$\{$~ns$\}\backslash ).$ Assume that the new address inputs have been applied to the ROM $500$ ns before the occurrence of the TRANSFER pulse. Determine the minimum duration of the TRANSFER pulse for reliable transfer of data.

FIGURE $12-46$ Problem $12-11.$

C$,$ D $12-12.$ Repeat Problem $12-11$ if the address inputs are changed $70$ ns prior to the TRANSFER pulse.