switch on 1 weak pullup on portb?

[peterdeco1]

Actually, I'm switching the other portb's back & forth from outputs back to inputs in different areas of the program. I don't believe you can turn the pullups on individually. It's all or none.

[mackrackit]

Depending on what you are out putting to, an external pull up might be the best solution. Use a high value.

[RussMartin]

Depending on what you are out putting to, an external pull up might be the best solution. Use a high value.

For a weak pull-up, I'd suggest 100K. Otherwise, I'd use 10K.