I took a full size layout of the defender CPO, and copied the left hand buttons and joystick to the right hand side.
I've got all the buttons in the correct spots to play defender, and I've also got two joysticks, each with several buttons.
roughly:
j2 b1 b2 j2 b1 b2
b3 --BINGO! Either that, or I was attempting to say "before" but it was too many letters to type-- b3
To play defender, J1, and it's b3, and buttons 1,2,3 for j2, along with --BINGO! Either that, or I was attempting to say "before" but it was too many letters to type-- in the middle.
the relationship of b1,2,3 are accurate, as is the relationship of b3 to j1. I had to relocate b1,2,3 on the right side about an inch higher, so that j1 and j2 would be aligned. The location of j2 was determined by the location of b3 on the right side.
Unfortunately, I havent' been able to figgure out how to make my computer run my arcade monitor yet, so I can't tell you how well it works.
Bob