Changing the Open Firmware screen resolution?

[Jackoverfull]

Il giorno 05/feb/2012, alle ore 04.33, Jim Harris ha scritto:

> 
> Re:  Bug (feature!) in Tiger.
> 
> This is not a *Tiger* issue.
> What I want to do is to set the screen resolution while within *OPEN FIRMWARE* so that the screen is easier to read.
> 

Right. But you can do it from OS X…

> What I am doing is this:
> 
> 1.  Perform the Macintosh "four-finger-salute". . .  OPT - CMD - O - F . . . . to get into the Open Firmware editor.
> (This is a very bad pun on Microsoft's "three-finger-salute"  CTL - ALT - DEL)
> 
> 2.  Notice that the size of the displayed characters on the screen is very small.
> 
> 3.  Execute a "printenv" command to print the entire list of environment variables.
> 
> 4.  Notice that "screen-#columns" is set to "100"
> 
> 5.  Notice that "screen-#rows" is set to 40
> 
> 6.  Set "setenv screen-#columns 50"  and  "setenv screen-#rows 20"  (essentially dividing both numbers in half)
> 
> 7.  Re-run the "printenv" and note that the values entered have "taken"  also note that the screen-resolution has not changed.
> 
> 8.  Execute "shut-down" to write novram and power down the computer.
> 
> 9.  Restart as in #1 above.
> 
> 10.  Note two things:
>   a.  The screen resolution within Open Firmware has not changed.
>   b.  Executing a "printenv" shows that the values entered are still there.
> 
> I have not figured out a way to make the OPEN FIRMWARE screen text larger.
> 
> Any ideas?
No, sorry, I have no idea about what screen-#rows/columns should actually do, nor I know an alternative.

> 
> p.s.  Ascii art would be both time-consuming and complicated to implement - especially within the confines of the ofboot.b file - to the point where it would be cheaper and easier to just go buy a monitor that is 2 x 1.125 meters in size!  (laughing)
> 
You're probably right.
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