Pc db9 serial port pinout8/7/2023 ![]() ![]() Once you fabricated a cable, you need a program to implement a protocol to transfer files between the Olivetti M20 and another system. ![]() It becomes easy to fabricate a null-modem cable: M20 connector pin: This image has been found in the Internet thanks to google images :-) ![]() This is the pinout of a DB9 connector you most likely can find on the back of your PC. This image is taken from the Olivetti M20 hardware description manual. ![]() This is the pinout of the serial connector you can see on the back of the M20 (the leftmost connector on the lower row). Expanded M20's could mount 2 additional RS232 interfaces, here we refer only to the first one. It is interesting to create a cable to use the interface to communicate with an another system. Anyway, cheap USB/RS232 adaptors are available for PC and Macintosh computer. A lot of modern PC include a RS232 interface, even if recently it becomes to be superseded in favor of USB. RS232 is a standard used to set up a serial communication between a wide range of devices. The Olivetti M20 has a RS232 interface mounted on the motherboard. Transferring files using a RS232 connectionby Davide Bucci ![]()
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