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From: Rob R. <ro...@re...> - 2006-03-03 20:57:23
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Hi all, I'm trying to see if it is possible to hoop up a TFT LCD (from an old laptop) to the gamecube digital video output. The output seems to be reasonably compatible with the timing required for the TFT. What I have found in patent 6609977 (http://freepatentsonline.com/6609977.html, search for Example Video Interface) The digital output outputs Y, Cr, Y ,Cb data on a fixed rate of 27 MHz and the output format is selectable between NTSC, PAL, MPAL(?) and Debug (CCIR656). The 27MHz makes sense for about 640 pixels horizontally for interlaced video. TFT displays however require non-interlaced data. To avoid using a difficult conversion, it is nescessary to use a 54MHz pixel clock, which should be possible according to the patent: VI Clock Select Register (R/W) This register selects whether the VI will receive a 27 Mhz or a 54 Mhz clock. The 54 Mhz clock is used only with the progressive display modes. VICLKSEL 1 0 -27 Mhz video clk 0 1 -54 Mhz video clk Is it possible with the current gcnfb module to select other modes than PAL or NTSC? Or is there an other way to tweak around with the video registers? This interlaced/non-interlaced issue seems to be the only problem in interfacing TFT LCD's to the GC, since the timing is quite compatible on all other cases and interfacing should be a matter of a simple CPLD to split the data stream, extract sync data and convert it to RGB. Kind regards, Rob |
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From: Shaun J. <sja...@gm...> - 2006-03-03 22:36:10
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From: TuiTo <lg...@te...> - 2006-03-07 11:35:47
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Dud, how you did that? Thanks a lot Melo. Shaun Jackman wrote: > Hello Rob, >=20 > I modified a Nintendo Gamecube component video cable to output RGBHV > instead of YCbCr and connected it to an LCD screen. It worked very > well! I used it with stock Nintendo games which could output > progressive video in addition to interlaced video. What you're asking > is certainly technically possible. I don't know if the Linux kernel > supports it. >=20 > Cheers! > Shaun >=20 > On 3/3/06, Rob Reilink <ro...@re...> wrote: >=20 >>Hi all, >> >>I'm trying to see if it is possible to hoop up a TFT LCD (from an old >>laptop) to the gamecube digital video output. The output seems to be >>reasonably compatible with the timing required for the TFT. >>What I have found in patent 6609977 >>(http://freepatentsonline.com/6609977.html, search for Example Video >>Interface) >>The digital output outputs Y, Cr, Y ,Cb data on a fixed rate of 27 MHz >>and the output format is selectable between NTSC, PAL, MPAL(?) and Debu= g >>(CCIR656). The 27MHz makes sense for about 640 pixels horizontally for >>interlaced video. TFT displays however require non-interlaced data. To >>avoid using a difficult conversion, it is nescessary to use a 54MHz >>pixel clock, which should be possible according to the patent: >> >> VI Clock Select Register (R/W) >> This register selects whether the VI will receive a 27 Mhz or a 54 = Mhz >> clock. The 54 Mhz clock is used only with the progressive >> display modes. >> VICLKSEL 1 0 -27 Mhz video clk 0 >> 1 -54 Mhz video clk >> >> >>Is it possible with the current gcnfb module to select other modes than >>PAL or NTSC? Or is there an other way to >>tweak around with the video registers? >> >>This interlaced/non-interlaced issue seems to be the only problem in >>interfacing TFT LCD's to the GC, since the timing is quite compatible o= n >>all other cases and interfacing should be a matter of a simple CPLD to >>split the data stream, extract sync data and convert it to RGB. >> >>Kind regards, >> >>Rob >=20 > N=18=EF=BF=BDHS^=EF=BF=BD=E9=9A=8AX=EF=BF=BD=EF=BF=BD=EF=BF=BD'=EF=BF=BD= =EF=BF=BD=EF=BF=BDu=EF=BF=BD=EF=BF=BD<=EF=BF=BD=DA=82=EF=BF=BD.=EF=BF=BD=EF= =BF=BD=EF=BF=BDy=EF=BF=BD"=EF=BF=BD=0B=1C=EF=BF=BD*m=EF=BF=BDx%jx.j=07=EF= =BF=BD=EF=BF=BD=EF=BF=BD^=EF=BF=BD=D7=A7v=C6=A9=EF=BF=BDX=EF=BF=BDj=D8=A8= =EF=BF=BD=C8=A7=EF=BF=BD=EF=BF=BD=1Em=EF=BF=BD=DD=9A=EF=BF=BD=EF=BF=BD=EF= =BF=BDv&=EF=BF=BD=EF=BF=BD=D7=A7v=EF=BF=BD^=EF=BF=BD+=EF=BF=BD=EF=BF=BD=EF= =BF=BD=EF=BF=BDj=EF=BF=BDZ=EF=BF=BD=EF=BF=BD=EF=BF=BD{az=EF=BF=BD=EF=BF=BD= =EF=BF=BD^=EF=BF=BD=EF=BF=BDh=EF=BF=BD=EF=BF=BD=E0=AE=8B=EF=BF=BDn=EF=BF=BD= =EF=BF=BD=EF=BF=BD)=EF=BF=BD{h=EF=BF=BD=18=EF=BF=BD=EF=BF=BD=EF=BF=BD=1C=EF= =BF=BD=D8=A7=EF=BF=BD=D7=AB=EF=BF=BD+h=EF=BF=BD(m=EF=BF=BD=EF=BF=BD=EF=BF= =BD=EF=BF=BD=EF=BF=BDZ=EF=BF=BD=EF=BF=BD=1FjY=1A=EF=BF=BDw=EF=BF=BD=EF=BF= =BD=C7=A5rg=EF=BF=BDy$=EF=BF=BD=EF=BF=BD=EF=BF=BDOx=E1=B8=9D=03n=EF=BF=BD= m=1Dj=EF=BF=BD=EF=BF=BD^=EF=BF=BD2=3D=3D=3D |
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From: Shaun J. <sja...@gm...> - 2006-03-07 16:44:00
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