Windows XP setup of a custom baud (IE 76800) using the FTDI FT232RL chip is actually not that bad.
I'll put a little how-to at bitchin100. Basically what you do is edit the driver so that the one of the "windows standard" rates becomes spoofed to run at the modified rate. You just have to remember which one was customized because there is no way to know from the typical config screen. I was able to find an FTDI based USB to RS-232 adapter locally at a store that still allows walk-up (not in!) business. https://www.startech.com/ca/Cards-Adapters/Serial-Cards-Adapters/1-Port-USB-Serial-RS232-Adapter-Cable~ICUSB2321F On Sun, Apr 26, 2020 at 12:03 PM Stephen Adolph <twospru...@gmail.com> wrote: > I guess. I bought an FTDI based cable and I'll be darned. Setting the > custom port rate in Linux seems like a nightmare. > > 76800 is harder than it sounded. > > In windows it seems like you edit a file called FTDIport.inf and change a > few values. But you need to ALIAS the port setting. > meaning you take a selection like 128000 and make it operate as 76800. > but the entry stays as 128000. > > I was really hoping that there would be some way of setting this up. my > BCR port is looking more user friendly after all. > > > > On Sun, Apr 26, 2020 at 11:52 AM Mike Stein <mhs.st...@gmail.com> wrote: > >> So, BCR port for video at 57600 and RS-232 at 76800 for data transfer? >> >> ----- Original Message ----- >> *From:* Stephen Adolph <twospru...@gmail.com> >> *To:* m...@bitchin100.com >> *Sent:* Sunday, April 26, 2020 11:32 AM >> *Subject:* Re: [M100] speed benchmark! >> >> no as I have said, bit banging the BCR port is limited to 57600. so it >> makes sense to use 76800 and a suitable usb RS232 port >> >> On Sun, Apr 26, 2020 at 11:29 AM Mike Stein <mhs.st...@gmail.com> wrote: >> >>> No problem using the RS-232 port at 76800 but can you bit bang the BCR >>> port at that speed? That was one of the main points after all. >>> >>> ----- Original Message ----- >>> *From:* Stephen Adolph <twospru...@gmail.com> >>> *To:* m...@bitchin100.com >>> *Sent:* Sunday, April 26, 2020 9:03 AM >>> *Subject:* Re: [M100] speed benchmark! >>> >>> I'm going to take back this comment: " I myself have passed characters >>> between two m100 at 76800 by manually coding, but It was flakey because of >>> how you have to set up the UART." >>> >>> For some reason I thought I recalled that the UART stopped using 16x >>> clock for RX sampling at 76800. Wrong! It always uses 16x clock. So the >>> UART should not have any problem with 76800. >>> >>> So, when used with an RS232 system that can support 76800 that's the >>> best option. >>> >>> >>> >>>>
