I am trying to use a 74LS273 octal latch on the RCM3000 auxiliary data bus to provide digital outputs. I am using I4 to strobe the 273 and /res on the clear input. I4 is set for active high and 3 wait states. The Q lines go high immediately after reset and stay there. Any suggestions?
I found that the I4 strobe is activated at the same time as the auxiliary data lines and since the 74LS273 latches on the rising edge of the strobe, it never saw the data. I switched to a 74LS373 that latches on the trailing edge and it works perfectly