Reflect x-axis (mirror screen) on Linux tty without GUI and without xrandr -x

I want to run old computers without GUI.

If I use the command xrandr -x in a Linux system (with GUI),
the whole screen is reflected (mirrored) around the Y-axis
(along the X-axis). 
So text is mirror-text, like:

pod
        changes to
                           boq

and LED/6
      changes to (something like)
                    ∂ ⫏∃⌋

(but by actually reflecting the characters,
not substituting similar-looking ones).

Even the layout is reflected like a mirror would be on the right or left side of the display, and you would watch into the mirror. 
I use my computer this way, so also reading not from left to right. 
I read text inverted from right to left. 
The letters are each themselves mirrored.

Without graphical user interface, I can’t use xrandr -x
So I am searching for a command that inverts the whole screen to x-axis timeless in the tty, so I can read text and use commands mirrored. 
Text always starts from the right side of the screen. 
It is like Arabic is written, but with Latin/Roman letters
and other characters normally displayable in the console/terminal.