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Re: Multicomp 6809 and the Serial Ports [message #6024 is a reply to message #6023]

Wed, 27 February 2019 16:05

nealcrook
Messages: 127
Registered: October 2015
Location: UK

Senior Member

Hi Coolbear,
if you are using my 6809 FPGA images then there are 3 serial ports:

* One is associated with the PS/2 and VGA "terminal"
* Two more are associated with 6850 UARTs in the RTL. One UART connects to the D connector on the board, and you need to populate the appropriate RS232 driver. The other UART connects to the header strip on the board, and is designed to connect to a TTL serial to USB adaptor.

The VDUFFD0 jumper on the board determines whether NITROS uses the "terminal" or the serial port as its boot console. What it does is swap the hardware decode between the "terminal" and UART!/Serail A: https://github.com/nealcrook/multicomp6809/wiki/VDUFFD0-Jump er

So, if you are using the Serial A as the boot console, it will be on /TERM and so the "terminal" will be on /T0 and hopefully Serial B will be on /T1.

I must confess, though, that I have probably never tested it... but I think Computerdoc aka Kip Koon had it running at one point (using my images) -- maybe with the NitrOS-9 level 1 image.

Neal.

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[Message index]

		Multicomp 6809 and the Serial Ports By: coolbear on Wed, 27 February 2019 11:58
		Re: Multicomp 6809 and the Serial Ports By: nealcrook on Wed, 27 February 2019 16:05
		Re: Multicomp 6809 and the Serial Ports By: nealcrook on Thu, 28 February 2019 11:42
		Re: Multicomp 6809 and the Serial Ports By: coolbear on Thu, 28 February 2019 12:40
		Re: Multicomp 6809 and the Serial Ports By: nealcrook on Fri, 01 March 2019 12:45
		Re: Multicomp 6809 and the Serial Ports By: coolbear on Fri, 01 March 2019 23:09
		Re: Multicomp 6809 and the Serial Ports By: nealcrook on Sat, 02 March 2019 01:29
		Re: Multicomp 6809 and the Serial Ports By: just4fun on Sat, 13 April 2019 03:25
		Re: Multicomp 6809 and the Serial Ports By: computerdoc on Sat, 09 May 2020 22:32
		Re: Multicomp 6809 and the Serial Ports By: nealcrook on Sun, 10 May 2020 08:47
		Re: Multicomp 6809 and the Serial Ports By: coolbear on Sun, 10 May 2020 11:28
		Re: Multicomp 6809 and the Serial Ports By: computerdoc on Sun, 10 May 2020 17:41

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