I had a little extra time so I dug out my VDIP1.
Where to start...
I see you are running the PIC at 4Mhz so 9800 baud may be a bit fast so lets work with 4800 baud.
We need to get your VDIP working at 4800, 8, N, 1.
The zip file attached has FTRFB.FTD in it. Unzip the zip and put the FTD file on a blank USB stick. The VDIP should see this file and do a firm ware upgrade. You do not need to send any commands at this point.
I have the VDIP1 connected to a terminal to see what is going on.
VDIP connections:
PIN1 = 5VOLT
PIN6 = PIN11 on a MAX232 PIN14 on the MAX goes to PC serial PIN2
PIN7, 10, and 18 = GROUND (ZERO VOLTS)
You can take PIN22 LOW to reset the VDIP1
A screen shot of the VDIP running at 9800 changing to 4800.
And a screen shot of the VDIP running at 4800 rebooted to the same USB stick.
I will try to get more time later this weekend to play some more.
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