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74c922 and keypad in Proteus 7 (8051 CPU)

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Chenbh

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Hello,
When I'm trying to use the keypad with the 74922 chip it refers only to the first button I press and any other buttons don't work.
When I'm starting the simulation I can see the chip scanning for presses but when I press it never continues.

74922.jpg

Thanks in advance
 

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    Chenbh

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Thanks, looks like I didn't need to connect the rows to VCC. works fine now.

have a nice day. :D
 

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