I have an Epson S1D13A05 LCD controller that wants to extend the write cycle if it happens to be busy when the chip select comes in with a WAIT# line. The Epson Data sheet tells me to insert wait states while the WAIT is asserted. And terminate the cycle when WAIT is de-asserted.
I tried tying WAIT to /TA but that only terminates the cycle when the 13A05 wants to extend the cycle.
It works intermitantly ( I presuem it only works when the 13A05 wants to extend the cycle for just one clock)
I tried adding wait states but the 13A05 wants to extend the cycle a random length. Seems like implementing a proper WAIT is the best way to do this.