Brad Parker wrote: I just finished the board mod on an M7554-DS a month ago, and have it running (Well, I'm out of state and it's powered down, but it ran most of last week...) Mine is the later layout, which is what all of the diagrams and pictures on that page represent. Note that for both board styles, you have to add a 1K resistor to enable the new ROMs. On yours you'll also need to clip a zero-ohm resistor. Your board is listed as the older artwork, and there aren't pictures, but a description of what you need to do: "On the older artwork a similar mod is required, except you also have to cut out a zero-ohm jumper. I don't have a picture yet, but, holding the board with the backplane connector to the right and the front edge to the left, and the ROMs at the bottom: the pads for the resistor are to the left of the ROMs, and the zero ohm jumper is just above it. If you are need to do this before I get the picture drawn, trace the circuit If you can scan your CPU board (at a decent resolution, I'd be glad to see if I can match a location to that description and mark where the work needs doing. I'm also probably not he only one who'd be willing to look at it for you. Doc

I''ve converted the S-box version, not the PB version. However, there were some scanned docs of the KDJ11-d series boards on shoppas trailing edge site. I looked at my copy and it does show you which/where the jumper and resistor combination that needs to be changed to convert from 16K to 32K proms. I included your particular board. Doug At 05:16 PM 7/14/2005, you wrote: