64x24 or 80x24 S-Video text driver?

Bill Henning

Is there a 64x24 or 80x24 or so NTSC text driver that takes advantage of S-Video?

I'd like a nice simple S-Video test that I can incorporate into my PropCadeDiag diagnostics program for testing the S-video output on PropCade.

I used demo-board standard pins for video, P12-P15, and I'd prefer to use existing code instead of having to hack up new code.

Thanks,

Bill

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potatohead

Bill, mine can do both of those. All you really have to do is change the VGFG line. I'm actually working on that code right now, adding the mouse, and trying to figure out how best to reclaim some HUB memory, by moving screen buffers and such into the space occupied by the HUB start up code.

At 80Mhz, potatotext does 64 columns in color, at 96+ it does 80. Take a photo, because I'm curious myself [noparse]:)[/noparse]

Link in my sig. The object in the OBEX has a goofy demo that shows of the colors, and the first screen has a few sample character patterns that artifact significantly on composite.

It's also got color burst on off, interlace on off, so you can show off the S-video nicely.

I'll keep a watch on the thread, and am off looking for the bits to flip...

Edit: I'm also curious about whether or not the auto-detect works on your Propcade. Given the pins you've used, you should just be able to load it up and hit F10 [noparse]:)[/noparse]

I'll post the VCFG change in a few minutes. Then I can just add a Svideo(0,1) method, and roll that into the new release to OBEX, on a successful test.

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Post Edited (potatohead) : 7/18/2010 5:30:28 PM GMT

Bill Henning

Thanks, will try it today.

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Las - Large model assembler Largos - upcoming nano operating system

potatohead

Does the Propcade run at 100Mhz?

I've got configurations for demoboard at 80, hydra at 80, and am off looking for one of those 6.25Mhz xtals. That's gonna take a small edit or two, or you could run the thing at 80Mhz to test, because potatotext will see it as a demoboard.

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Bill Henning

Yep, PropCade is also designed to run at 100MHz

The second prototype I will build from this run will be configured for 100MHz, I just want to finish testing everything at 80MHz before adding another variable.

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My products: Morpheus / Mem+ / PropCade / FlexMem / VMCOG / Propteus / Proteus / SerPlug
and 6.250MHz Crystals to run Propellers at 100MHz & 5.0" OEM TFT VGA LCD modules
Las - Large model assembler Largos - upcoming nano operating system

potatohead

Nice. Then the driver should come up just fine, as it expects 80, with Demoboard pins. If that autodetect code doesn't work, just force the demoboard 80Mhz case.

I'm working on the 100Mhz one.

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Propeller Wiki: Share the coolness!
8x8 color 80 Column NTSC Text Object
Wondering how to set tile colors in the graphics_demo.spin?
Safety Tip: Life is as good as YOU think it is!

Bill Henning

nice [noparse]:)[/noparse]

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www.mikronauts.com E-mail: mikronauts _at_ gmail _dot_ com
My products: Morpheus / Mem+ / PropCade / FlexMem / VMCOG / Propteus / Proteus / SerPlug
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Las - Large model assembler Largos - upcoming nano operating system

potatohead

Bill, Here are the changes to the start SPIN object, for 100Mhz.

Pri  HWDetect | HWPins

  clkset(%01101000,  12_000_000)                        ' Set internal oscillator to RCFast and set PLL to start
  waitcnt(cnt+120_000)                                  ' wait approx 10ms at 12mhz for PLL to 'warm up'

' Automatic hardware detection based on the use of pins 12 & 13 which results
' in different input states 
' Demoboard = Video Out
' Hydra = Keyboard Data In & Data Out
' Hybrid = Keyboard Data I/O & Clock I/O


  
  HWPins := INA[noparse][[/noparse]12..13]                                 ' Check state of Pins 12-13

  CASE HWPins
{    %00 : clkset( %01101111, 80_000_000 )                          ' Demo Board   80MHz (5MHz PLLx16)  
          ivcfg := %0_11_1_0_1_000_00000000000_001_0_01110000      ' demoboard 4 color mode
          ifrqa := $16E8_BA2F                                      ' (7,159,090.9Hz/80MHz)<<32 NTSC demoboard & Hydra 
          idira := $0000_7000                                      ' demoboard
}
    %00 : clkset( %01101111, 100_000_000 )                         ' Propcade   100MHz (6.25MHz PLLx16)  
          ivcfg := %0_11_1_1_0_000_00000000000_001_0_01110000      ' demoboard 4 color mode
          ifrqa := $1253_C824                                      ' (7,159,090.9Hz/80MHz)<<32 NTSC demoboard & Hydra 
          idira := $0000_7000                                      ' demoboard
               
    %01 : clkset( %01110110, 80_000_000 )                          ' Hydra        80MHz (10MHz PLLx8)
          ivcfg := %0_11_1_0_1_000_00000000000_001_0_01110000      ' %0_10_1_0_1_000_00000000000_011_0_00000111      ' Hydra & Hybrid
          ifrqa := $16E8_BA2F                                      ' (7,159,090.9Hz/80MHz)<<32 NTSC demoboard & Hydra 
          idira := $0700_0000                                      ' Hydra & Hybrid
          
    %11 : clkset( %01101111, 96_000_000 )                          ' Hybrid       96MHz (6MHz PLLx16)
          ivcfg := %0_10_1_0_1_000_00000000000_011_0_00000111      ' Hydra & Hybrid
          ifrqa := $1317_45D1                                      ' (7,159,090.9Hz/96MHz)<<32 NTSC Hybrid
          idira := $0700_0000    

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potatohead

Bill, what does your S-video circuit look like?

I'm now working on the S-video change... (which is in the code I put here)

Learned something this morning. Suppressing chroma by holding back on the color burst gives a monochrome signal, with the color information still there. Suppressing it in the VCFG, yields a nice, clean mono signal, with no other changes to the driver, or the color values used. Didn't know that. I'll attach a capture or two in a moment. I'm going to modify some of the potatotext signal mode methods to allow for this. IMHO, this is handy to know for most drivers that output in color. If a monochrome display device is used, the output will be really clean done the VCFG way.

[noparse]:)[/noparse]

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8x8 color 80 Column NTSC Text Object
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Post Edited (potatohead) : 7/19/2010 3:42:49 AM GMT

Bill Henning

Thanks!

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www.mikronauts.com E-mail: mikronauts _at_ gmail _dot_ com
My products: Morpheus / Mem+ / PropCade / FlexMem / VMCOG / Propteus / Proteus / SerPlug
and 6.250MHz Crystals to run Propellers at 100MHz & 5.0" OEM TFT VGA LCD modules
Las - Large model assembler Largos - upcoming nano operating system

potatohead

Here's the difference in output captures. And 100Mhz is sweet [noparse]:)[/noparse] Those will be in the next version with mouse to be uploaded to the OBEX, and will also be in the multi-color driver I'm working on. It's a subset of the VIC II.

I don't see a way to avoid having the user just edit a little bit of code to account for 80 vs 100Mhz. Bummer that, but it won't be hard. The strip is just me testing the mouse draw code. Timing is tight, and I'm looking for cycles to do it, without adding a COG.

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Propeller Wiki: Share the coolness!
8x8 color 80 Column NTSC Text Object
Wondering how to set tile colors in the graphics_demo.spin?
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Post Edited (potatohead) : 7/18/2010 7:24:23 PM GMT

Bill Henning

Pin 12-14 = luminance (same as composite R's)
Pin 15 = chroma (the second 560R)

potatohead said...
Bill, what does your S-video circuit look like?

I'm now working on the S-video change...

Learned something this morning. Suppressing chroma by holding back on the color burst gives a monochrome signal, with the color information still there. Suppressing it in the VCFG, yields a nice, clean mono signal, with no other changes to the driver, or the color values used. Didn't know that. I'll attach a capture or two in a moment. I'm going to modify some of the potatotext signal mode methods to allow for this. IMHO, this is handy to know for most drivers that output in color. If a monochrome display device is used, the output will be really clean done the VCFG way.

[noparse]:)[/noparse]

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www.mikronauts.com E-mail: mikronauts _at_ gmail _dot_ com
My products: Morpheus / Mem+ / PropCade / FlexMem / VMCOG / Propteus / Proteus / SerPlug
and 6.250MHz Crystals to run Propellers at 100MHz & 5.0" OEM TFT VGA LCD modules
Las - Large model assembler Largos - upcoming nano operating system

Bill Henning

Now THAT's a visible difference!

potatohead said...
Here's the difference in output captures. And 100Mhz is sweet [noparse]:)[/noparse] Those will be in the next version with mouse to be uploaded to the OBEX, and will also be in the multi-color driver I'm working on. It's a subset of the VIC II.

I don't see a way to avoid having the user just edit a little bit of code to account for 80 vs 100Mhz. Bummer that, but it won't be hard. The strip is just me testing the mouse draw code. Timing is tight, and I'm looking for cycles to do it, without adding a COG.

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www.mikronauts.com E-mail: mikronauts _at_ gmail _dot_ com
My products: Morpheus / Mem+ / PropCade / FlexMem / VMCOG / Propteus / Proteus / SerPlug
and 6.250MHz Crystals to run Propellers at 100MHz & 5.0" OEM TFT VGA LCD modules
Las - Large model assembler Largos - upcoming nano operating system

Cluso99

potatohead: Can't you use the clkfreq to calculate the parameters? IIRC that is what my latest 1pin tv code does.

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Links to other interesting threads:

· Home of the MultiBladeProps: TriBlade,·RamBlade,·SixBlade, website
· Single Board Computer:·3 Propeller ICs·and a·TriBladeProp board (ZiCog Z80 Emulator)
· Prop Tools under Development or Completed (Index)
· Emulators: CPUs Z80 etc; Micros Altair etc;· Terminals·VT100 etc; (Index) ZiCog (Z80) , MoCog (6809)·
· Prop OS: SphinxOS·, PropDos , PropCmd··· Search the Propeller forums·(uses advanced Google search)
My cruising website is: ·www.bluemagic.biz·· MultiBlade Props: www.cluso.bluemagic.biz

potatohead

I can. That's probably not a bad idea. After thinking about it some, that's really the last element keeping the potatotext from just being a loadable binary blob.

I'm kind of wanting to load it from SD card anyway, to reduce the startup foot print, and make it more useful. Good call. One would load the TV cog, start it, then load the graphics (there will be a graphics cog soon) or the text cog, using a 2K buffer. Load values into all the HUB memory "registers", then turn the whole works on, leaving only the screen, and the font, both of which could reside in the load buffer, for modest character densities, and or font tables.

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Propeller Wiki: Share the coolness!
8x8 color 80 Column NTSC Text Object
Wondering how to set tile colors in the graphics_demo.spin?
Safety Tip: Life is as good as YOU think it is!

Cluso99

Nice [noparse]:)[/noparse]

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
Links to other interesting threads:

· Home of the MultiBladeProps: TriBlade,·RamBlade,·SixBlade, website
· Single Board Computer:·3 Propeller ICs·and a·TriBladeProp board (ZiCog Z80 Emulator)
· Prop Tools under Development or Completed (Index)
· Emulators: CPUs Z80 etc; Micros Altair etc;· Terminals·VT100 etc; (Index) ZiCog (Z80) , MoCog (6809)·
· Prop OS: SphinxOS·, PropDos , PropCmd··· Search the Propeller forums·(uses advanced Google search)
My cruising website is: ·www.bluemagic.biz·· MultiBlade Props: www.cluso.bluemagic.biz