15" Vertical mono monitor

[Brad Lee]

I was testing some old 9pin monitors for work the other day and came across a vertically oriented display

ran-ger technologies
model:420
Full Page Mono Display

It's also labelled as 'The Genius'. The connecter is a standard 9pin male, like you would find on any old monitor.

I tried it on an old dos machine, and it lit up but it kept rolling, like the vert hold was jacked up. No knobs for V/H hold though, probably inside.

Anything useful that could be done with this? Are there any/many black n white vertical games?

[StephenH]

I was wondering if it is one of those hold Herclues graphics systems.   I think the Hercules card from the original PCs, supported a resoultion of 720x348 (but I could be wrong).  There were mainly designed for business text use.   In addition, they may be fixed frequency.

It may need a cap kit, but also it may have been rolling because you were sending the wrong resolution to it.

Also, Apple made some B&W vertical displays.  I am not sure what the resolution should have been on them, either.  It may have been 384x512, or something similar.

[Brad Lee]

Its not an apple, it does say IBM-PC on the box somewhere
Im sure it was the wrong resolution, it was a dos box so whatever 40x25 is by default

[paigeoliver]

There are about 80 different black and white vertical games, unfortunately one of them is Space Invaders and the other 79 are Space Invaders clones.