>   .__________.
>   | 16F628   |
>   |          |
>   |      RB0 |---------o-------------| MOSFET 1 gate
>   |          |         |
>   |      RB1 |---------|-------o-----| MOSFET 2 gate
>   |          |         |       |
>   | RA5      |         |       |
>   '----------'         |       |
>      |               |/        o |
>      |  A>--'\/\/\,--|  NPN      |] Pushbutton N.O.
>      |         R1    |\>       o |
>      |                 |       |
>      |                 |       |
>      |                (D)      |
>      |                 |       |
>      |                 |       |
>      `-----------------o--|<|--'
>                        |   1N4148
>            ,--'\/\/\,--'
>            |     R2
>           GNDb

You're making this way too complicated.  Just turn on the internal pullups
when you want to read the switches and tie the other end of the switches
to ground.  This even frees up RA5.  (Where did you find such a hairbrain
design in the first place?)


*****************************************************************
Embed Inc, embedded system specialists in Littleton Massachusetts
(978) 742-9014, http://www.embedinc.com

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