Search found 89 matches

by Grabulosaure
Sun Jun 02, 2019 7:25 pm
Forum: MiSTer
Topic: Scaler
Replies: 393
Views: 64678

Re: Scaler

8bpp palette implemented is not how i've expected. Can you implement palette as block in DDR3 memory laying before the frame buffer? I can make a thingy that does DMA copies to fill palette registers. It could even be used for setting the framebuffer size, format, base address... or anything else. ...
by Grabulosaure
Wed May 29, 2019 11:24 pm
Forum: MiSTer
Topic: Scaler
Replies: 393
Views: 64678

Re: Scaler

When you will be able to finish new format? I have just uploaded a new version with an indexed 8bpp mode (palette). OLD FORMAT[2:0] NEW FORMAT[4:0] "000" 16bits 1555 RGB => 01100 "001" 24bpp RGB => 00101 "010" 32bpp RGB => 00110 "011" 16bits 565 RGB => 00100 ...
by Grabulosaure
Tue May 28, 2019 11:13 pm
Forum: MiSTer
Topic: Scaler
Replies: 393
Views: 64678

Re: Scaler

@Grabulosaure: I found that R/B in 16bit mode are swapped. Also some bits offsets were wrong. I fixed it in my latest Menu commit together with 565 mode. I've fixed it only in output part affecting the framebuffer. Probably input part also needs fixing, although 16bit modes aren't used for core vid...
by Grabulosaure
Fri May 24, 2019 1:07 pm
Forum: MiSTer
Topic: Scaler
Replies: 393
Views: 64678

Re: Scaler

further investigation shown that pll_hdmi_adj is guilty in HDMI initialization problem. Somehow it interfere with ADV7513 configuration. Once i set llena = 0; lltune = 0; i've got Menu core working. Even standard disable lowlat mode from HPS side doesn't prevent the problem. It's not a problem to d...
by Grabulosaure
Thu May 23, 2019 8:03 pm
Forum: MiSTer
Topic: Scaler
Replies: 393
Views: 64678

Re: Scaler

Sorgelig wrote:i've added changes to Ascal for R/B swapping in Menu_MiSTer repository.
You can accept my changes or make your own. Up to you.


Is it really useful to be able to choose the order?
And RGB565 seems a bit more common than RGB555. And there is one extra bit of green paint!
by Grabulosaure
Tue May 21, 2019 11:07 pm
Forum: MiSTer
Topic: Scaler
Replies: 393
Views: 64678

Re: Scaler

Another version ! - RAMBASE as base address in scaler mode. - New signals for the framebuffer mode : o_fb_ena,o_fb_height, o_fb_width (this time actual dimensions :640x400, not 639x399), o_fb_base, o_fb_format - No header in the framebuffer mode. - freeze and triple-buffering don't need to be disabl...
by Grabulosaure
Tue May 21, 2019 10:53 pm
Forum: MiSTer
Topic: Scaler
Replies: 393
Views: 64678

Re: Scaler

.
by Grabulosaure
Tue May 21, 2019 1:37 am
Forum: MiSTer
Topic: Scaler
Replies: 393
Views: 64678

Re: Scaler

I'm trying to make framebuffer mode but it seems something wrong with scaler. Or may be i doing something wrong.. I've updated Genesis sources with new scaler and FB mode. Also updated the Main with FB support. To switch to FB mode, load Genesis core and open the OSD menu. And then in OSD press F9....
by Grabulosaure
Mon May 20, 2019 2:01 am
Forum: MiSTer
Topic: Scaler
Replies: 393
Views: 64678

Re: Scaler

So, new version : - Framebuffer address as "avl_base" signal. Updates taken into account after Vsync falling edge. - Programmable colour depth "format" signal. 0=16bpp R5G5B5, 1=24bpp, 2=32bits RGB0. I hope that byte order matches standards. Of course the screen-shooter will nee...
by Grabulosaure
Mon May 20, 2019 1:05 am
Forum: MiSTer
Topic: Scaler
Replies: 393
Views: 64678

Re: Scaler

So, new version : - Framebuffer address as "avl_base" signal. Updates taken into account after Vsync falling edge. - Programmable colour depth "format" signal. 0=16bpp R5G5B5, 1=24bpp, 2=32bits RGB0. I hope that byte order matches standards. Of course the screen-shooter will need...
by Grabulosaure
Sun May 19, 2019 10:06 am
Forum: MiSTer
Topic: Scaler
Replies: 393
Views: 64678

Re: Scaler

Does this clock must match the selected size of framebuffer or any clock is fine? Any clock. Just propagating signals (calculating the input image dimensions is done in the i_clk clock domain.). I can try to remove that constraint, if needed. See Genesis demo build can you upload modified parts sou...
by Grabulosaure
Sat May 18, 2019 10:37 pm
Forum: MiSTer
Topic: Scaler
Replies: 393
Views: 64678

Re: Scaler

.(error).
by Grabulosaure
Sat May 18, 2019 10:36 pm
Forum: MiSTer
Topic: Scaler
Replies: 393
Views: 64678

Re: Scaler

I've tried a few things with the scaler. - Border. 24 bits input, defaults to black but can be set to display patterns, anything. - Added an pixel enable input which allows to select pixels that don't update the framebuffer.Could be used for overlays. (See Genesis demo build). Using that extra byte ...
by Grabulosaure
Mon May 13, 2019 11:09 pm
Forum: MiSTer
Topic: Scaler
Replies: 393
Views: 64678

Re: Scaler

Thanks for updating! 1) Is version on your site OK to use, or you still testing? 2) Border feature is interesting. Should be good for debugging the video as well. 3) 3D should be interesting but i think it's not urgent to implement and can be postponed for future. Especially only couple cores have ...
by Grabulosaure
Mon May 13, 2019 9:21 pm
Forum: MiSTer
Topic: Scaler
Replies: 393
Views: 64678

Re: Scaler

I was busy with other stuff these past months, halting ASCAL development. Current changes - Low lag mode fix. Tearing. - Reduced minimal horizontal blanking time - Fix image header for 64bits data bus. - "3D" Variant - Border colour - Low lag mode. Some tearing occurred in low lag mode, pr...
by Grabulosaure
Sat May 11, 2019 11:37 pm
Forum: MiSTer
Topic: New Screenshot Feature
Replies: 13
Views: 2207

Re: New Screenshot Feature

There is currently the output resolution in the scaler header, for debug. It just reflects the current settings (4/3, 16/9...) not the format on original hardware. The PNG format allows different X/Y pixel dimensions (pHYs chunk), but it's probably ignored by viewers. Anyway, command-line image conv...
by Grabulosaure
Mon Mar 18, 2019 10:15 pm
Forum: Wiki Discussions
Topic: Wiki dead? Not any more!
Replies: 65
Views: 60665

Re: Wiki dead?

Hi, if i can help...What is the storage space needed ? and bandwidth ? About the mirror hosted on temlib.org for around 6 months The MediaWiki database size is 257MB Monthly bandwidth usage is around 500...600MB, principally from US (23%) , UK(12%) and Germany(12%). The pages about ACSI, SCSI and I...
by Grabulosaure
Sun Feb 10, 2019 1:26 pm
Forum: MiSTer
Topic: Scaler
Replies: 393
Views: 64678

Scaler

Changes in january version : - ASCAL : Fixed rightmost line for some input resolutions (C64, Minimig) - ASCAL : Fixed downscaling offset - ASCAL : Half-frame updates of interleaved vided (50-60Hz instead of 25-30Hz output) - ASCAL : Fixed image properties header writes. Updated content. Change endi...
by Grabulosaure
Sun Feb 10, 2019 1:02 pm
Forum: MiSTer
Topic: Scaler
Replies: 393
Views: 64678

Re: Scaler

JamesF wrote:ASCAL scaler updated.

AFAIK some arcade cores are about to be released, and they may benefit from the fixes to screen_rotation.
by Grabulosaure
Wed Feb 06, 2019 12:13 am
Forum: MiSTer
Topic: SNES core
Replies: 321
Views: 68271

Re: SNES core

As I understand it the Linux side calculates the PLL needed so the initial frequency is already very close and the FPGA side only needs to make minor adjustments. So I don't understand why there is any sync loss. If my TV is losing sync because of the continuous frequency adjustments then it should...
by Grabulosaure
Tue Feb 05, 2019 11:14 pm
Forum: MiSTer
Topic: SNES core
Replies: 321
Views: 68271

Re: SNES core

After the scaler update on 28 January my TV has to resync everytime I load a rom when using HDMI with vsync_adjust=2. So I see a black screen for 2 seconds. Before that update, vsync_adjust=2 did not work in any of the "official" releases (SNES, Genesis/Megadrive...), because of a missing...
by Grabulosaure
Thu Jan 31, 2019 8:05 am
Forum: MiSTer
Topic: Scaler
Replies: 393
Views: 64678

Re: Scaler

The hardware, both the FPGA and HDMI encoder, can barely reach 200MHz (which is far better than expected, and beyond the datasheet specs.). Mister software enforces 200MHz as max. freq. I will extend the limits to unreachable values. In the meantime new ascal has problem with rotated video in Donke...
by Grabulosaure
Tue Jan 29, 2019 12:55 am
Forum: MiSTer
Topic: HDMI Audio crackle noise
Replies: 18
Views: 2361

Re: HDMI Audio crackle noise

Yes, that completely fixed the clicking noises on HDMI, well done! But it introduced aliasing artifacts which were not present before,, similar to what we heard on SPDIF. I think the new lpf filter by Sorgelig that was applied to SPDIF doesn't work as well as on HDMI, even if it is the same I2S LPF...
by Grabulosaure
Mon Jan 28, 2019 1:44 am
Forum: MiSTer
Topic: HDMI Audio crackle noise
Replies: 18
Views: 2361

Re: HDMI Audio crackle noise

If you can hear the cracking noises, please compare these versions of SNES and Genesis : http://temlib.org/pub/mister/ascal/SNES.rbf http://temlib.org/pub/mister/ascal/SNES_snd.rbf http://temlib.org/pub/mister/ascal/Genesis.rbf http://temlib.org/pub/mister/ascal/Genesis_snd.rbf Maybe they sound diff...
by Grabulosaure
Sat Jan 26, 2019 9:48 pm
Forum: MiSTer
Topic: Custom Video Modes Test Thread
Replies: 25
Views: 4480

Re: Custom Video Modes Test Thread

What's this? That doesn't look like on of the scanline filters done through the scaler. Is it a "Scandoubler FX" scanline option? ASCAL isn't as good as the VIP scaler for image quality. I have tried several things, such as rounding, but it is not quite right. With a custom core and miste...

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