From: slavotinek@gmail.com   
      
   On 17.01.2023 14:01, Louis Ohland wrote:   
   > MAJ Tom, in one of your transmissions before you left with the children   
   > of the Sun, you said the 90 has the CP Code addresses. Now, whether this   
   > is a planar -OR- complex hardware supported thing, I dunno. Probably   
   > complex.   
   >   
   > Figure 1-2. System Board I/O Address Map page 14   
   >   
   > 0108 — 010F Information Panel   
      
   Well, the 90 and 95 share the same POST/BIOS code, so they both send the   
   codes. But the decode logic, xceivers and of course, the physical   
   interface is on the planar and only on the 95 one. So, when installed in   
   the Model 90 the complex is talking but nobody is listening (on ports   
   108-10Fh).   
      
   The Japanese 5560 planar has the decode logic and a provision for the   
   connector and the xceiver, but they are not populated normally (similar   
   to the 85 K/N planar):   
   https://www.ardent-tool.com/PS55/5560/#Op_Panel_Connector   
   https://www.ardent-tool.com/85_95/Op_Panel_9585_KN.html   
      
   As you proposed, the DBA connector would be a nice hookup point for the   
   display decode logic.   
      
   There is no Op Panel-related logic on the complex, if we ignore the   
   completely independent SDL iface on the T4 boards.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)