[Coco] Grant Searles SBC

[Bill Nobel]

Hi guys.  This is a shout out to the Hardware Experts out there.  I am trying to build this unit on a breadboard and am having some issues.  I am following the circuit to a tee.  Powering up I get 1.843 mhz on the E & Q lines R/W is working.  But sometimes when I hit reset my BA line goes high throwing CPU into HALT state even though my HALT is tied High.  Also on the terminal window I am getting nothing but garbage @ 115200 baud.  The one difference to the circuit I am using a FTDI instead of the 9 pin serial plug.  I verified the FTDI by connecting to a old desktop pc using Hyperterm so the chip is working.  But on the SBC I get nothing.  I even went to the extent of swapping out all the chips and verified by hand the Eprom code to see if it Burned properly.

 Any suggestions or help would be appreciated.

Bill Nobel