TRS-80 DT-1 Refurb Part 2
Added 2019-09-15 17:03:42 +0000 UTCAnd the finale! This thing rocks, it's now one of my favourite pieces in my collection and I'm probably going to leave it out on my desk all the time.
EDIT: I mentioned in the video that I'll have a more in depth look at the setup menu in another video. That is shot (I think, hopefully I have everything I need) but I don't have that one edited yet but I'll update this post when I get a chance to. It's going to be more for anyone who actually has one of these but lacks the experience with a terminal to know what the settings mean. So it's going to be pretty dry and mostly just informative. It'll be going up on the additional channel because it won't be a very fun video.
EDIT 2: The more in depth segment about the serial configuration is done: https://www.youtube.com/watch?v=3gir5d2FgJ4
It's five minutes of pretty dry stuff that's really only going to apply to DT-1 owners, all several dozen of us. So it's not exactly riveting. But it might be useful a reference explanation for someone who gets one and doesn't know how to use it.
Comments
I do have that setup now, but I also have the systemd agetty service running on ttyS0. I can't remember if I had to now, but I think I did. I at least had to when I was testing it with hardware flow control so I could change more settings. I still haven't been able to get it to work at 19,200 baud, I'm currently using it with an RPI and a level shiftier serial adapter. Someone mentioned in a comment it could be a 12V issue that I'm only giving the DT-1 a 5V signal back which might be on the edge of the logic threshold. I can give it 12V but I'll need to rewire my adapter. I really need to get some help and write a custom termcap entry for the DT-1 because none of the emulated modes work right. It can do underline, reverse, and half intensity but screen filters those out. And without screen the cursor positioning codes don't match.
Tech Tangents
2019-09-23 15:47:54 +0000 UTCHello Shelby, though I'm sure you figured out by now, with systemd it became quite easy to set up serial consoles. In theory, all you need to do is setting up grub; systemd will pick this up and start the appropriate agetty@ services: GRUB_TERMINAL_OUTPUT="console" GRUB_CMDLINE_LINUX="console=tty0 console=ttyS0,9600 [...]"
Daniel Helgenberger
2019-09-23 14:14:04 +0000 UTCI really wanted one of these for a long time! I was so happy when I got it working.
Tech Tangents
2019-09-18 01:58:58 +0000 UTCI love how excited you are!
Eric Siegel
2019-09-17 03:45:32 +0000 UTC
