In the K4 processor, how do I find the Xbit. I find all kinds of info that mentions the Xbit but never where it is located.Like the register or what bit is in the register.I have looked in all the registers and have never found a bit called the Xbit. Its never called the Xbit in the registers. I have been able to use the Xirq pin, but only by using the TAP instruction.The TAP instruction clears the Xbit.
If no one knows about the K4 processor, Where can I find it in any other HC11 processor.
Thanks for any help