Omndiagonal Serialization and Monitor Design



    I've not been following this very carefully (other than the mention of the Celco deflection yokes), but here is the list of resolutions available from the framebuffer (unix term for a graphics card) on my current system:
===================================================================== 1024x768x60 1024x768x70 1024x768x75 1024x768x77 1024x800x84 1152x900x66 1152x900x76 1280x800x76 1280x1024x60 1280x1024x67 1280x1024x76 960x680x112s (stereo) 960x680x108s (stereo) 640x480x60 640x480x60i (interlaced) 768x575x50i (interlaced) 1440x900x76 (hi-res) 1600x1000x66 (hi-res) 1600x1000x76i (hi-res) 1600x1280x76 (hi-res) 1920x1080x72 (hi-res) 1920x1200x70 (hi-res) ====================================================================    The third parameter is the frame rate. The ones marked "(stereo)" alternate frames between two different views, and an output signal selects which half of a special pair of glasses you can see through at that moment.
    Feel free to calculate your parameters with those. Note that the default resolution for most Sun machines is the 1152x900 at one or the other of the scan rates.

    Anything Widows based will not be popular with *me*. :-)
    Enjoy,         DoN.
--
Email: < snipped-for-privacy@d-and-d.com> | Voice (all times): (703) 938-4564
(too) near Washington D.C. | http://www.d-and-d.com/dnichols/DoN.html
  Click to see the full signature.
Add pictures here
βœ–
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
ftp://users.aol.com/DGoncz/Publications/1152x864.gif
shows that my Creative Labs Graphic Blaster RIVA 128ZX has accepted a new definition of the rarely used NeXT mode 1152x864. This was done with Power Strip.
My redefinition is:
Direction H V Pixel Rate 60 Hz 69 KHz 69.315 MHz Pixels 1152 864 Front Porch 0 pixels 0 lines Sync 8 pixels 2 lines Back Porch 0 pixels 0 lines
and these are all minimums for the front and back porch, but the sync vertical must, of course, be a multiple of 2, while the sync horizontal is the minimum. So this mode doesn't pad by two in available hardware and it does look like James Waldby was right about my factoring. That's a lot of pixels for about a 70 MHz pixel clock, but the zoomability is key, not the lack of retrace.
No conventional analog CRT can display this mode, but I intend to build or configure one to do exactly that. I will need a stereo audio amp, two signal generators with trigger or phase lock, and either my Tek scope or a monitor I can pull apart, at the minimum.
Doug Goncz Replikon Research Falls Church, VA 22044-0394
Add pictures here
βœ–
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
Hello, all.
Hell, J. Clarke, Tim, Keith, Joseph, DoN, Lew, Jasen, and James, in particular.
ftp://users.aol.com/DGoncz/Publications/1152x864B.gif
shows a slightly modified version of the redefinition in the referenced post, but this seems to be a more correct timing calculation. Here is the modeline and associated information:
(Monospaced Font as before)
PowerStrip timing parameters: 1152x86452,0,8,0,864,0,1,1,60268,0
Generic timing details for 1152x864: HFP=0 HSW=8 HBP=0 kHzR VFP=0 VSW=1 VBP=1 Hz`
VESA detailed timing details: PClk`.27 H.Active52 H.Blank=8 H.Offset=-16 HSW=8 V.Active†4 V.Blank=2 V.Offset=0 VSW=1
Linux modeline parameters: "1152x864" 60.268 1152 1152 1160 1160 864 864 865 866 +hsync +vsync
Now you must understand this is designed to be displayed *diagonally*! The second active pixel in the first scan line will show, with the correct deflection waveforms, at screen coordinates (2,2), using a 1 basis for the origin in the upper left, that is, an origin of (1,1). I have not checked common factors for this "mode".
Doug Goncz Replikon Research Falls Church, VA 22044-0394
Add pictures here
βœ–
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
snipped-for-privacy@aol.com (I) wrote:

I would do this by running the sync signals into the line inputs and writing a program to synchronize wave outputs or perhaps MIDI outputs to the amp if it there were any reason to keep the hardware compact and PC based. There would be some drift and constant correction because the video and audio use separte clock crystals.
Doug Goncz Replikon Research Falls Church, VA 22044-0394
Add pictures here
βœ–
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
I wrote:

I noticed some kind of adjustable pixel clock in PowerStrip and wonder if any pixel clock is the same as or can be locked to the sample rate of an audio stream.
Doug Goncz Replikon Research Falls Church, VA 22044-0394
Add pictures here
βœ–
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

you'd be hard pressed to find any pixel clocks below 500Khz, (most are well over 5Mhz) but audio can possibly be resampled or interpolated to get a similar effect.
Bye. Jasen
Add pictures here
βœ–
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Polytechforum.com is a website by engineers for engineers. It is not affiliated with any of manufacturers or vendors discussed here. All logos and trade names are the property of their respective owners.