Daniel Del Mul

How to capture data into variables?

Discussion created by Daniel Del Mul on Jun 15, 2013
Latest reply on Jun 24, 2013 by Daniel Del Mul

Hi All,

I am trying to replace an obsolete TSM5055 display. This display basically has a 35bit shift register in it something like the MM5451. I would like to replace this with a hcs08 variant (SE8) and 4 7segment displays. I think i can display the data to the 7segment displays once I capture the data. What I am needing help with is capturing the data that is sent to it. The TSM5055 has an enable line, data line and clock line. I have tried using the clock line to trigger  a KBInterrupt and capture the data pin. I have pieced together pieces of ASM code I have gleaned from other people but the micro keeps resetting in the debugger saying illegal something or other. I am not at my test bench right now. Has anyone done this type of thing before and could share some code. I do not know C and am a beginner in ASM.

Thank you for taking the time to read this,