Pic interface to Internal modem.
John Payson email (remove spam text)
> Has anyone worked on an interface to an internal modem using a pic?
> would it be possible to interface to the data bus(from the uart) and decode
> the address lines and use the irq for the interrupt?
I suppose it would be possible, but unless you add external latching,
you'll use up 15 I/O lines (8 data, 4 address, /IORD, /IOWT, and IRQ). An
alternative might be to find a modem with a non-integrated UART chip.
Remove that, wire your PIC in its place, and you should be all set to go.
In reply to: <19970821022643437.AAA286@tdooley>
See also: www.piclist.com/techref/microchip/devices.htm?key=pic
You must be a member of the
piclist mailing list
(not only a www.piclist.com member) to post to the