Cant get up/down to work on moded genesis controller

[Sega_Freak]

Hi,

I am trying to mod my genesis controller to run on my pc through my parallel port. I used the following schematics to make the connections, and I am using direct pad pro and PPJoy but I cannot get the up and down buttons to work! any help would be greatly appreciated. Thanks!

DB25 DB9
25 pin D-sub 9 pin d-sub
male male
1--------------------------1
2--------------------------7
3--->|---|
4--->|---|
5--->|---|
6--->|---|-----------------5
7--->|---|
8--->|---|
9--->|---|
10-------------------------3
11-------------------------4
12-------------------------6
13-------------------------9
14-------------------------2
18,19----------------------8

->| means 1N4148 diode