Search found 2834 matches

by Sorgelig
Tue Nov 13, 2018 7:23 pm
Forum: MiSTer
Topic: Genesis Core
Replies: 153
Views: 11274

Re: Genesis Core

nope. it's fixed without cpu
by Sorgelig
Tue Nov 13, 2018 4:33 pm
Forum: FPGA Chat
Topic: Alternative to GPL license
Replies: 15
Views: 402

Re: Alternative to GPL license

Anyway, for me it's just for fun. And like i've said all this retro has no commercial value besides just some very low quantities and mostly as a side projects.
by Sorgelig
Tue Nov 13, 2018 3:37 pm
Forum: FPGA Chat
Topic: Alternative to GPL license
Replies: 15
Views: 402

Re: Alternative to GPL license

Analogy with schematic doesn't apply for HDL. For HDL you still need to use the source code which is part of software, or copyrighted text if you like this term more.
by Sorgelig
Tue Nov 13, 2018 2:09 pm
Forum: FPGA Chat
Topic: Alternative to GPL license
Replies: 15
Views: 402

Re: Alternative to GPL license

While this is still true for the HDL files describing a design, the acts of manufacturing a device based on the design, or using such a device, are not subject to copyright. So i don't see much contradict here. It's like endless patents war between Apple and Samsung. They don't have rights to devic...
by Sorgelig
Tue Nov 13, 2018 1:23 pm
Forum: FPGA Chat
Topic: Alternative to GPL license
Replies: 15
Views: 402

Re: Alternative to GPL license

Btw, it seems that HDL code is not as protected by copyright as software is. Say, if some company wants to put my core on an ASIC and start selling 68K derivatives, I have no way to prevent it. That is not governed by copyright. It's not true. As an author of code you have rights for this. If you c...
by Sorgelig
Tue Nov 13, 2018 1:12 pm
Forum: MiSTer
Topic: I/O Board
Replies: 197
Views: 38419

Re: I/O Board

More accurate values probably will require DAC IC. 99% of cores output not more than 4 bits per color component. Actually color fidelity wasn't a strong point of original emulated system. What current analog output provided by MiSTer is already much higher quality than it was originally. So before t...
by Sorgelig
Tue Nov 13, 2018 12:48 pm
Forum: MiSTer
Topic: Scaler
Replies: 84
Views: 5358

Re: Scaler

Many fixes, many changes. - Edges now are much worse. 320pix mode has around 8-10pix of wrapping with inverted colors on the left. Line with garbage on the up. - 256pix mode bug is still present. Tested on 1920x1080 HDMI resolution. Even precompiled rbf from your site has the same problems. So, it ...
by Sorgelig
Tue Nov 13, 2018 11:44 am
Forum: MiSTer
Topic: Genesis Core
Replies: 153
Views: 11274

Re: Genesis Core

vanfanel wrote:-Space Harrier II has strange sounds all the time. Music is full of strange noise.

will be fixed in next release.
cacophony wrote:In Toy Story there's a glitchy horizontal line the runs through the majority of the screen at around the height of Woody's waist

will be fixed in next release.
by Sorgelig
Tue Nov 13, 2018 11:10 am
Forum: FPGA Chat
Topic: Alternative to GPL license
Replies: 15
Views: 402

Re: Alternative to GPL license

If you're interested we have a program here at work which converts Verilog/VHDL into non-human readable code which remains formally identical to the original and synthesises to the same code. We use it from time to time when giving examples to EDA companies. how it's related to topic? There was no ...
by Sorgelig
Tue Nov 13, 2018 8:50 am
Forum: MiSTer
Topic: I/O Board
Replies: 197
Views: 38419

Re: I/O Board

Schematic and PCB has been made for switch i've bought in local store. It had no name. Much later compatible switch has been found online and recommended in BOM. There is no relation schematic to specific switch in BOM. You buy the switch and solder to PCB - you don't need to look into its datasheet...
by Sorgelig
Tue Nov 13, 2018 5:10 am
Forum: MiSTer
Topic: I/O Board
Replies: 197
Views: 38419

Re: I/O Board

Ok, so the VGA output is strictly 15Khz? You read it wrong. I've said that output frequency depends on core. Usually core can output both 15KHz and 31KHz depending on scandoubler option. 31KHz is not the only thing required for VGA compatibility. VGA also requires the vertical frequency to be at le...
by Sorgelig
Tue Nov 13, 2018 4:46 am
Forum: FPGA Chat
Topic: Alternative to GPL license
Replies: 15
Views: 402

Re: Alternative to GPL license

In your license you can write that commercial usage is allowed only with your written agreement. You cannot distinguish in license if it is small commercial by hobbyist or large corporation as there is no strong legal division between them.
by Sorgelig
Mon Nov 12, 2018 10:59 pm
Forum: MiSTer
Topic: MiSTer NES Core
Replies: 34
Views: 2679

Re: MiSTer NES Core

NES didn't have stereo output, so games didn't position channels to L/R.
by Sorgelig
Mon Nov 12, 2018 9:51 pm
Forum: MiSTer
Topic: Hybrid MIDI Sound Emulation (Roland MT-32/CM-32)
Replies: 9
Views: 368

Re: Hybrid MIDI Sound Emulation (Roland MT-32/CM-32)

i think, the output of softSynth can be routed back to FPGA for final mixing to HDMA/analog. I don't know how much CPU time is required for MUNT and will it slowdown MiSTer binary. It would be good to use MUNT on a single core and different than MiSTer - this way it should be smooth for MiSTer main ...
by Sorgelig
Mon Nov 12, 2018 9:33 pm
Forum: MiSTer
Topic: Scaler
Replies: 84
Views: 5358

Re: Scaler

Grabulosaure wrote:- osd.v was changed : Pipelining : Time critical path.

please use updated osd.v from my latest release. It's reworked especially to minimize time critical paths. If there are still some problems, your changes are welcome.
by Sorgelig
Mon Nov 12, 2018 7:12 pm
Forum: MiSTer
Topic: Hybrid MIDI Sound Emulation (Roland MT-32/CM-32)
Replies: 9
Views: 368

Re: Hybrid MIDI Sound Emulation (Roland MT-32/CM-32)

I didn't get it. What device produces the sound?
by Sorgelig
Mon Nov 12, 2018 1:22 pm
Forum: MiSTer
Topic: Arcade cores
Replies: 229
Views: 35398

Re: Arcade cores

do you have more details on these, is there a simpler board that can take what is developed on the de10-nano and be programmed. none that can use MiSTer cores directly. Every board in unique and require special core. I mean there are other boards with other cores. Some those cores were ported to Mi...
by Sorgelig
Mon Nov 12, 2018 9:19 am
Forum: MiSTer
Topic: Scaler
Replies: 84
Views: 5358

Re: Scaler

btw, I didn't understand how interlaced mode should work in this scaler.
The test game is Sonic 2, VS mode. Lines are flickering even if there is no movements. So just static pic is flickering.
by Sorgelig
Mon Nov 12, 2018 9:05 am
Forum: MiSTer
Topic: Scaler
Replies: 84
Views: 5358

Re: Scaler

The OHRES value is currently maxed at 2048, so you're getting wrapping. Testing with 4096 seems to work, but maybe it's possible to use something smaller to not waste as many resources. Not sure if it's needed or not. The instructions require power of 2, but maybe you can tell the parts that care t...
by Sorgelig
Mon Nov 12, 2018 7:43 am
Forum: MiSTer
Topic: I/O Board
Replies: 197
Views: 38419

Re: I/O Board

If this pin is grounded all my cores output video to VGA connector. If this pin is not grounded then all VGA signals in Hi-Z mode. VGA connector doesn't exactly mean VGA timings. Basically it's analog video with whatever timings provided by cores. In most cases timings are NOT compatible with VGA. Y...
by Sorgelig
Mon Nov 12, 2018 5:25 am
Forum: MiSTer
Topic: Genesis Core
Replies: 153
Views: 11274

Re: Genesis Core

albconde wrote:Chaos Engine problems with scroll is back.

you have to use VRAM access rate: Original to have correct scrolling.

Currently only one game requires Fast access - Clue in NTSC mode (in PAL mode it works with original rate).
by Sorgelig
Sun Nov 11, 2018 7:07 pm
Forum: MiSTer
Topic: Genesis Core
Replies: 153
Views: 11274

Re: Genesis Core

cacophony wrote:* In Toy Story there's a glitchy horizontal line the runs through the majority of the screen at around the height of Woody's waist

This is already reported earlier.
Probably won't be fixed til cycle accurate CPU.
by Sorgelig
Sun Nov 11, 2018 4:47 pm
Forum: MiSTer
Topic: Genesis Core
Replies: 153
Views: 11274

Re: Genesis Core

In new release Clue can work without fast VRAM access if run in PAL mode.
All games with sound problems need to be re-checked as new JT12 includes many fixes.
by Sorgelig
Sun Nov 11, 2018 4:41 pm
Forum: MiSTer
Topic: MiSTer updates and changelog
Replies: 199
Views: 56262

Re: MiSTer updates and changelog

Genesis: - Support on-cart SRAM (Buck Rogers, Primetime NFL, some other games) - Fix shadow/highlight (Toughman Contest) - Fix HINT in the last line (Sonic 1 garbage, Turbo Outrun) - Fix FM reset (Turbo outrun) - Update JT12(FM) to latest version (should fix the sound in many games) - Fixes in VDP ...
by Sorgelig
Sun Nov 11, 2018 1:45 pm
Forum: Others
Topic: Alternative developemnt FPGA boards for hobbyists
Replies: 4
Views: 273

Re: Alternative developemnt FPGA boards for hobbyists

I just don't understand what DE10-nano is doing here. Terasic produces several boards below 150USD. DE0-nano, DE0-nano-SoC, DE10-lite, DE1.
Also, for personal experiments budget can vary. Some more expensive boards can be found as secondhand on ebay with much cheaper price.

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