Hi Kris, Thank you for taking the time to post this design. I have extremely limited experience with SMD components. After several attempts I came to the conclusion that 1206 resistors were too big for the pad spacing. After I realised that the three pads nearest the middle of the board were all connected to VCC. My cunning solution was to stick a narrow piece of adhesive backed copper tape in place towards the middle of the board just touching the pads thus widening the distance between the pads pairs. I solder the copper tape to the pads, confirmed continuity by buzzing out and resistance measurements.Put the SMD components in place and went a lot easier from then on... I am in the process of figuring out the purpose of each of the solder bridges - a less blurry schematic would be really helpful:-)!. The PCBWay on-line gerber file viewer is helping and I am nearly there. The original designer always has tricks in mind that lesser mortals miss even after a dozen passes. A small improvement to the design is to put a 2x3 header instead of the 1*4 header, run the ground down three pins on one side then one can use jumpers to set the A13, A14 and A15 lines to ground individually with a jumper. I appreciate that you may have been wanting to install a cable to a remote switch to do the selection. Another thing to consider is to use right angle headers to enable better access to remove the EPROM and/or lengthen the board to allow better access. I know design is a real compromise and your objective maybe to not interfer with the next row of chips. For now I am leaving the header off until i have a genuine need. Cheers David

Hi, can't read the scheme as its very low resolution, and can't find it on your site. Are pull up resistors 10K 1206?

Hi, Thanks for a great design. If I am using your adaptor in the 2732 --> 2764 way, do I need to solder the pull up resistors? Thanks!