Re: M6809E/63C09E databus behavior question

2018-06-01 Thread Eric Smith via cctalk
On Thu, May 31, 2018 at 10:48 PM, Jim Brain via cctalk < cctalk@classiccmp.org> wrote: > I agree this is very specific, but I thought perhaps someone could help. > > As I look at the '09 datasheets, I can't tell when the data lines become > valid on a write cycle. > In the MC68x09E datasheet,

M6809E/63C09E databus behavior question

2018-05-31 Thread Jim Brain via cctalk
I agree this is very specific, but I thought perhaps someone could help. As I look at the '09 datasheets, I can't tell when the data lines become valid on a write cycle. I ask because I have created a few projects that place themselves between the CPU and the CPU socket (CPLD based). To