Serout problem

[skimask]

The internal clock on the 12F675 is probably too far off (i.e. 12F675 transmitting at 2350 baud, 16F628 receiving at 2400 baud, something like that).
Try slowing down the baud rate or moving the OSCCAL value on the 12F675 around a bit and see what happens.

[mister_e]

If the calibration data is still intact, you try to add

DEFINE OSCCAL_1K 1

Before ANSEL=0

[Agent36]

Hi,
thanks for the replys, I thought it might be something to do with the internal osc. Tried the program code on a 16f819 worked fine.
So i got a brand new 12f675, checked the osc cal and band gap values, loaded the code and rechecked them. I did this because I have had other timing issues with these 12f675's. Some of which were down to me I think.
I like to stick with an 8 pin chip because I aim to fit the board into a keyfob, so space is tight.
First I will try the soloutions you have offered.

Thanks for your time.

Nick

[Agent36]

Hi,

Thanks for the info regarding the DEFINE OSCCAL_1K 1
Adding that to the program code has solved my little problem.

I have found referances about this define in the pbp manual, for some reason I thought that DEFINE OSC 4mhz was correct.

I assume that DEFINE OSCCAL_1K 1 means

org 0
movwf OSCCAL

Thanks for your time........Nick