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Forum Index : Microcontroller and PC projects : VT100 "MODE NOT SUPPORTED"

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hitsware
Guru

Joined: 23/11/2012
Location: United States
Posts: 535
Posted: 12:36pm 10 Sep 2014
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I got a VT100 board together. When plugged into VGA monitor
(with or without MicroMite), I get "mode not supported" on the
screen. At first I thought it was a message from the board,
but now I'm thinking it's from the monitor itself ....
Ideas ?????
 
TassyJim

Guru

Joined: 07/08/2011
Location: Australia
Posts: 6224
Posted: 12:38pm 10 Sep 2014
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The monitor doesn't like the scan rate that the VT100 terminal uses.

Some monitors only accept a limited range of scan rates.

Jim
VK7JH
MMedit
 
hitsware
Guru

Joined: 23/11/2012
Location: United States
Posts: 535
Posted: 12:47pm 10 Sep 2014
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Hmmmmmmmmmmmm.....
I don't have the jack for composite yet.
Might that still work ?
 
hitsware
Guru

Joined: 23/11/2012
Location: United States
Posts: 535
Posted: 12:36pm 11 Sep 2014
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After adding the solder blob for VGA signal and the LED,
the VT100 works (loopback and all)
Still cannot reach the MicroMite though.
It's intermittent at best.
Best case I get the Basic splash screen,
but keyboard doesn't echo.
At times keyboard echos, but certain keys
give weird results ........
Gettin' closer .............
 
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