justin case wrote:
i had some trouble building this vga-interface. do you have any _working_ odelines for frambuffers? i would appreciate.
I can give you a set of Modelines I calculated for X, but they should work with the framebuffer too: |# NTSC |# HSF = 15.734khz (Horizontal Scan Frequency) |# VSF = 59.94Hz (Vertical Scan Frequency) |# 525 Total Scanlines | |# line length = 63.5us (1/HSF) |# line blanking interval = 10.9us +- 0.2us ( front porch + sync pulse + back porch) |# front porch = 1.27us-2.22us (1.745us +- 0.475us) |# sync pulse = 4.7us +- 0.1us |# (nominal back porch = 4.455us) | |# HTOTAL = XRES*63.4/52.6 |# DCLK = HTOTAL*15.734*1000 (Dot Clock) |# HSS = HTOTAL*53.87/64 |# HSE = HTOTAL*58.57/64 | |Modeline "640x480@60i" 11.32 640 646 703 786 480 484 487 525 -hsync -vsync interlace |Modeline "640x240@60" 11.32 640 646 703 786 240 242 244 263 -hsync -vsync |Modeline "657x480@60i" 12.50 657 667 725 792 480 484 487 525 -hsync -vsync interlace |Modeline "657x240@60" 12.50 657 667 725 792 240 242 244 263 -hsync -vsync |Modeline "704x480@60i" 13.34 704 714 776 848 480 484 487 525 -hsync -vsync interlace |Modeline "704x240@60" 13.34 704 714 776 848 240 242 244 263 -hsync -vsync |Modeline "720x480@60i" 13.59 720 727 791 864 480 484 487 525 -hsync -vsync interlace |Modeline "720x240@60" 13.59 720 727 791 864 240 242 244 263 -hsync -vsync |Modeline "800x480@60i" 15.10 800 808 879 960 480 484 487 525 -hsync -vsync interlace |Modeline "800x240@60" 15.10 800 808 879 960 240 242 244 263 -hsync -vsync | | |# PAL |# HSF = 15.625Khz |# VSF = 50Hz (Vertical Scan Frequency) |# 625 Total Scanlines | |# line length = 64us (1/HSF) |# line blanking interval = 12us +- 0.3us ( front porch + sync pulse + back porch) |# front porch = 1.5us +- 0.3us |# sync pulse = 4.7us +- 0.2us |# (nominal back porch = 5.8us) | |# HTOTAL = XRES*64/52 |# DCLK = HTOTAL*15.625*1000 (Dot Clock) |# HSS = HTOTAL*53.5/64 (hsync start) |# HSE = HTOTAL*58.2/64 (hsync end) | |# VTOTAL = 625 |# VSS = VTOTAL | | | |Modeline "800x576@50i" 15.38 800 823 895 984 576 580 583 625 -hsync -vsync interlace |Modeline "800x288@50" 15.38 800 823 895 984 288 290 292 313 -hsync -vsync |Modeline "768x576@50i" 14.76 768 789 858 944 576 580 583 625 -hsync -vsync interlace |Modeline "768x288@50" 14.76 768 789 858 944 288 290 292 313 -hsync -vsync |Modeline "720x576@50i" 13.88 720 742 808 888 576 580 583 625 -hsync -vsync interlace |Modeline "720x288@50" 13.88 720 742 808 888 288 290 292 313 -hsync -vsync |Modeline "704x576@50i" 13.50 704 722 786 864 576 580 583 625 -hsync -vsync interlace |Modeline "704x288@50" 13.50 704 722 786 864 288 290 292 313 -hsync -vsync |Modeline "650x576@50i" 12.50 650 669 728 800 576 580 583 625 -hsync -vsync interlace -- Tobias PGP: 0x9AC7E0BC This mail is made of 100% recycled bits Now playing: Chris Huelsbeck: - Harmonic Waves (Trance 42 Radi