13 Sep
2021
13 Sep
'21
5:34 p.m.
Hi Tim,
On Mon, Sep 13, 2021 at 8:21 PM Tim Carson motorhommie@gmail.com wrote:
PORT: /dev/cu.usbserial-1420
This indicates that your programming cable has a chip that identifies itself as being a Prolific type chip. If it is the older PL2303XA / HXA chip it is no longer supported by drivers supplied by Prolific.
What can be done to get it to work on Catalina and older macOS is to purchase a 3rd party driver (that is what I did here for my MacBook running Catalina). https://www.mac-usb-serial.com/
For Big Sur you will probably have to get a programming cable manufactured with a different USB-to-Serial chip (FTDI, WCH, Silicon Labs, etc).
Jim KC9HI