Mhz display help

[Amigaz]

On my recently aquired Baby AT tower there's a Mhz display which I believe is inproperly connected since it doesn't show the numbers correctly and there's some spare wires that I think should be connected to it.
I think this is a longshot but does someone have any idea what all these pins are and what to connect to them?

http://img156.imageshack.us/img156/1918/p1010318pe2.jpg

[kb2syd]

Typically, the green provides power to the display unit.

The two blacks indicate if it is in turbo or non-turbo mode.

The jumpers then set which LEDs are on for each mode. I think there are 2 jumpers for each segment, one for turbo, one for non-turbo.

Hope this helps.

[IBMMuseum]

On my recently aquired Baby AT tower there's a Mhz display which I believe is inproperly connected since it doesn't show the numbers correctly and there's some spare wires that I think should be connected to it.
I think this is a longshot but does someone have any idea what all these pins are and what to connect to them?...

"All these pins" are jumper pins. Start playing around to adjust to the correct MHz speed you want to display. It's just a trial and error thing.

[carlsson]

Or you can form any numbers or letters you want to display. Back in the days, I liked to configure those displays to read out AC (my initials), in particular on early Pentiums who ran faster than 99 MHz anyhow and no longer had any turbo mode.

[IBMMuseum]

Or you can form any numbers or letters you want to display. Back in the days, I liked to configure those displays to read out AC (my initials), in particular on early Pentiums who ran faster than 99 MHz anyhow and no longer had any turbo mode.

For the ultimate idea of LED MHz display there is the IBM PS/2 Model 95 (the larger case Server 500 and Server 720 have the same or better capabilities too): http://www.youtube.com/watch?v=WqxRBAbbCzs&NR=1

There has even been a driver written to display specific data or design a marquee-style display...

[fred333]

Thanks for the link to the video.

[the xt guy]

Here is a link to a page which tells how to program the case display

http://www.pcmech.com/article/how-to-program-your-system-case-display/

[Mad-Mike]

If that readout page doesn't look good, I'm going to be making one for my page soon for another style of LED readout from the AMT 486.

AMT 486 Readout Jumper Settings + Power Switch Light Wiring for various lighting effects
http://creepingnet.hotlightbulb.com/technical/powerledreadout.html

I picked up another case with one of those readouts in it, a Desktop chassis from around 1997 or so that had a Pentium 200 MMX in it, looks like the perfect candidate for a 486 DX4 box. Also, it's MHz display looks close to yours from the back, so it might use the same settings.