How to Map Diagonal Buttons on Keyboard?

[Gamr965]

So as simple as this may seem, Keyboard is the most convenient way for me to use the controls, since the only wired USB Gamepad I had broke and my bluetooth controllers like Switch Pro Controller don't communicate well with my PC and lags often and causes me to mess up in games. I try to map up left, up right, down right, and down left on my keyboard keys, and even though I press them at the same time, it only registers one of the keys. the diagonals unasigned don't work if I press up and left key for example cause Mario in Mario World doesn't move up and left while on a cage. does anybody know how I can use diagonal d-pad buttons in snes9x with a keyboard?

[odditude]

i'm not sure i'm following you. are you saying that if you had the following config:

• Up: W
• Left: A
• Down: X
• Right: D
• Up Left: Q
• Up Right: E
• Dn Right: C
• Dn Left: Z

... that Q doesn't do anything?