Hello,
Yes, the description Stephen have below basically is what I did. I don't know
useful it would be to describe what I bought, since (with Brexit) I try as hard
as possible to buy things from Swedish or European sellers, but I bought a
VGA-to hdmi adapter (this might be the one I bought but I thought I paid half)
https://www.24.se/ljud-bild-foto/kablar-kontakter/tvprojektor-kablar/videoadapter-hdmi-till-vga-ljud
The hdmi to tablet thing was fairly well documented in the article on Tom's
hardware.
https://www.tomshardware.com/how-to/use-android-tablet-raspberry-pi-screen
I wanted to do this not only for the MVT100 solution but to use it with a pi,
but it also worked for the hdmi output from my sony laptop (an old vaio) and
even my Sony A7 camera. I used an hdmi capture device that could be this one
(once again a Swedish site but you get the general idea)
https://www.24.se/datortillbehor/datortillbehor/ovriga-datortillbehor/video-capture-usb-3-0
The tablet I used is a Samsung SM-T380, and this I bought in the US for my
mother but she thought it was too slippery and wanted to keep her old one, so
it ended up travelling to Sweden. This device needs to support host mode, so
there is a short cable from USB-C (on the tablet) to a USB-A socket (where the
hdmi capture device gets plugged in). An hdmi cable connects the capture
device and the vga-to-hdmi converter, and the vga converted is plugged into the
MVT100. You need some app on the android tablet, and the one in the Tom's
Hardware article worked OK. There are others, some with a lot of ads.
As I mentioned, the 'hdmi output displayed on the tablet' was great for the
raspberry pi, and even for my Sony A7 camera.
As far as running a vt100 app directly in the tablet, that did cross my mind
but I didn't think such an app existed. I have something in my android phone
that gives me a command line interface, and I have used it to ssh into other
machines, but I couldn't figure out how to get it to ssh to the serial adapter.
After John's message, I looked, and sure enough, there is one that supposedly
can emulate a vt100 connected to a serial adapter (and they listed all the
usual ones). Now I have to try this out as well. I'll probably get some
strange looks again....
Jonathan
----Ursprungligt meddelande----
Från : twospru...@gmail.com
Datum : 2021-01-20 - 04:11 (CEST)
Till : m...@bitchin100.com
Ämne : Re: [M100] vga monitor solutions
sounds like Jonathan has a solution in progress.
M100 (with VT100 driver) ---> RS-232--->MVT100--->VGA---->converter--->HDMI
---->tablet
At least I think that is what is going on. If it works, you could use the
video commands that worked with Disk Video Interface, running on the Tablet as
a display.
On Tue, Jan 19, 2021 at 9:09 PM Chris Fezzler <
fezz...@yahoo.com> wrote:
This is interesting but over my head. I have an old Google Nexus 7
gathering dust. Can I use it as an monitor for a Model T?
On Tuesday, January 19, 2021, 03:39:29 PM EST, Kenneth Pettit <
petti...@gmail.com> wrote:
I’ve actually stripped out the Model T logic from VirtualT and used the
framework for other apps twice now
Ken
Sent from my iPhone
On Jan 19, 2021, at 12:10 PM, Stephen Adolph <
twospru...@gmail.com> wrote:
WRT using Virtual T - I just meant the framework. strip out
Virtual T and replace with a new application that uses all the same tool kit.
After all it is the only thing I know how to do!
On Tue, Jan 19, 2021 at 2:58 PM John R. Hogerhuis <
jho...@pobox.com> wrote:
On Tue, Jan 19, 2021 at 11:44 AM Stephen Adolph <
twospru...@gmail.com> wrote:
I am actually thinking about exactly that, a new VT100 app
that implements the custom M100 control codes, and takes serial data.
Was thinking to use the VirtualT framework to do it also.
VT100 is an industry standard so I don't know about M100
control codes. I think you had mentioned something about arrow keys being
different in the current implementation. Which control codes are you referring
to? The whole set of Model 100 escapes?
Which is fine... that's one way to go and it can be implemented exactly. It
just isn't VT100.
The other issue is encoding and fonts. HTERM does this mapping on the Model T
side, which makes it compatible with any shell/terminal. But you could also do
a mapping to Unicode on the terminal side. Then you could use off-the-shelf
fonts.
Another way to go would be to render the display completely yourself with
graphics based on the Model 102 character set. Then you could get very high
fidelity.
As to VT, it's just a terminal, so you don't need 99% of what VT does. And what
VT does do that you need, like rendering the display, has to pass through the
Model T ROM and 8085 emulation. And it's limited to 40x8. Seems like it creates
more problems than it solves. Just displaying character bitmaps to the screen
is a simpler task.
-- John.
