Saving Sharp PC-G850VS text file to tape?

[Chr Yoko]

Do you have a USB to RS232C interface ?

exemple :
https://silicium.org/forum/viewtopic.php?f=17&t=42285

Maybe easier to save different types of files than on a cassette ?

That kind of interface looks not too difficult to make DIY.
I am on the process to make one for a PC E500 (15 Pins 1.27mm pitch interface) and one for the PC G850 using a 11 pins 2.54mm pitch interface.
Once validated, i could share the PCB design.