New RAM chips are here!

Well the new 5101 RAM chip came in, and it seems that Flash acts no differently with the new chip installed.  Very disappointing.  I think we are going to need to get the test PROM working to really debug this board.  If we hook the logic analyzer up to it, we should be able to see the code executing.  (Amazing easy to debug since every bus cycle is external to the processor.)  Of course, I would give anything to just hook a BDM debugger up to this thing and quickly see why it isn’t getting past the initialization routine.  Oh well, tonight is pinball night so hopefully we will have more info then.

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s