Sorry, I forgot to mention what I was talking about, I meant pic
programmers (microchip) which connect from the serial port
of the pc.
Here is my problem. If I have visyal basic I can use
MSComm object to read and send characters to the serial
line. The problem, as far as I can see, is the clock, as there
is no extra send/receive line
If you're using "the serial port" and sending and receiving characters
with a comm DLL, then no "clock" is needed - the receiving device
figures out the 1's and 0's based on the start bit, n data bits, and
stop bit, and all of the bits are sent at some previously-agreed-on
rate.
So we might be talking apples and oranges here. It sounds like you
have a whole development kit, which talks to the computer with a
comm line.
The others seen to think you're referring to the chip itself,
which might or might not be using a UART. To bitbang serial
data to a chip that has "data" and "clock" lines, you have to
wiggle individual bits.
Hope This Helps!
Rich