Search found 1517 matches

by slingshot
Wed Feb 26, 2020 8:27 am
Forum: MiST
Topic: NEW OR UPDATED ARCADE CORES
Replies: 742
Views: 182148

Re: NEW OR UPDATED ARCADE CORES

DrOG wrote:That sounds very practical and convenient! Thanks to all involved! :cheers:

Which one? The CPS1 or the mass download? The later is standard Github feature :D
by slingshot
Wed Feb 26, 2020 8:24 am
Forum: MiST
Topic: Atari 2600 / VIC 20
Replies: 122
Views: 22578

Re: Atari 2600 / VIC 20

There's a very stupid bug, I'll fix it ASAP. But strange that nobody noticed it for 2 years (including myself).
by slingshot
Tue Feb 25, 2020 3:15 pm
Forum: MiST
Topic: [ZX Spectrum Core] New Update
Replies: 90
Views: 24556

Re: [ZX Spectrum Core] New Update

There's no "official" timings for > 3.5 MHz, so it doesn't matter how it's done until it runs. No border effects will work anyway. The MiST(er) cores go up to 56 MHz, inserting wait states if the SDRAM is not ready.
by slingshot
Tue Feb 25, 2020 3:00 pm
Forum: MiST
Topic: NEW OR UPDATED ARCADE CORES
Replies: 742
Views: 182148

Re: NEW OR UPDATED ARCADE CORES

Useful link to download the latest versions of all cores without using git: https://codeload.github.com/Gehstock/Mist_FPGA_Cores/legacy.tar.gz/master Thanks! I was cloning the repo and using just rbf cores. Is this link something static or it will include future new versions? Best regards, Goran It...
by slingshot
Tue Feb 25, 2020 2:59 pm
Forum: MiST
Topic: NEW OR UPDATED ARCADE CORES
Replies: 742
Views: 182148

Re: NEW OR UPDATED ARCADE CORES

vebxenon wrote:CPS 1 beta released :cheers: by Jotego for betatesters.

https://www.patreon.com/posts/34248428

It's pretty impressive to see that on MiST, because I assume it uses higher memory bandwith than the Genesis. And that's already near the limit.
by slingshot
Mon Feb 24, 2020 10:06 am
Forum: MiST
Topic: NEW OR UPDATED ARCADE CORES
Replies: 742
Views: 182148

Re: NEW OR UPDATED ARCADE CORES

Useful link to download the latest versions of all cores without using git:

https://codeload.github.com/Gehstock/Mi ... .gz/master
by slingshot
Mon Feb 24, 2020 9:37 am
Forum: MiST
Topic: NES core on MiST
Replies: 209
Views: 83718

Re: NES core on MiST

One problem I encountered is that the F12 menu sometimes hangs when you have used the core for some time and loaded multiple games. It is then necassary to perform a full reset of the MiST. If the OSD hangs, that's the ARM CPU. Might be a bug in the firmware. Can you reproduce it in other cores, to...
by slingshot
Sat Feb 22, 2020 7:56 pm
Forum: MiST
Topic: HELP WANTED: MRA file converter for MiST
Replies: 149
Views: 7117

Re: HELP WANTED: MRA file converter for MiST

I even feel tempted of reverting old cores to this simpler logic plus MRA tool but that would be disruptive for users. But all future cores will use this new approach. But supplying an MRA for your existing cores couldn't hurt, I think, the ROM generation part was always hard, the scripts didn't wo...
by slingshot
Sat Feb 22, 2020 8:22 am
Forum: MiST
Topic: Mounting the MiST in an Atari 520ST
Replies: 4
Views: 525

Re: Mounting the MiST in an Atari 520ST

If you have a real Atari ST keyboard with the controller, then you can make a level shifter and connect it to the UART pins on the MiST, and a very small change in the MiSTery core will allow to work directly without USB. You'll just lose the MIDI. I never tried it, but would be interesting to see t...
by slingshot
Fri Feb 21, 2020 11:34 pm
Forum: MiST
Topic: NES core on MiST
Replies: 209
Views: 83718

Re: NES core on MiST

Look like there isn't much feedback here, but here's a new (let's call it beta) version: https://github.com/mist-devel/mist-binaries/blob/master/cores/nes/nes_200222beta.rbf I've reverted some patches for the PPU (especially the one which quadrupled its size), please report if anything broken compar...
by slingshot
Thu Feb 20, 2020 7:17 pm
Forum: MiSTer
Topic: Arcade cores
Replies: 1065
Views: 239711

Re: Arcade cores

I see that. I fixed that. Asteroids is broken too I believe. I need to fix it. Still not quite right. I need to upload newer code. Is the mist version color? No, there's no BRAM for color picture. But the current code is easy to modify for more bits/pixel. Sooner or later I have to write a SDRAM-ba...
by slingshot
Thu Feb 20, 2020 6:16 pm
Forum: MiSTer
Topic: Arcade cores
Replies: 1065
Views: 239711

Re: Arcade cores

I updated it to use the 12mhz clock. The 6mhz clock Signal was ignored and it was using the 25 which is messed up as well. 25 MHz for receiving the vector data also wrong. Notice you have two asynchronous clock domain: 12 MHz which generates (and receives) the vector data, and writes to the BRAM fr...
by slingshot
Thu Feb 20, 2020 4:41 pm
Forum: MiSTer
Topic: Arcade cores
Replies: 1065
Views: 239711

Re: Arcade cores

I tried changing the clock from 25 to 50, but it looked worse. I am trying the mist rasterizer, but i am having trouble with the dpram - it doesn't like OLD_DATA The problem is with the write_ram process, it should run at 12MHz, not 6. Actually the 6 MHz signal for the rasterizer should be 12 MHz. ...
by slingshot
Thu Feb 20, 2020 9:17 am
Forum: MiSTer
Topic: Arcade cores
Replies: 1065
Views: 239711

Re: Arcade cores

The dotted lines issue seems to be also related to this normalization code. I tried a build without normalization at all, and got pure clean lines, but it only had time to draw a few per frame. The dotted lines are there because of the rasterizer works only at half rate (at least on MiST, that was ...
by slingshot
Wed Feb 19, 2020 7:18 pm
Forum: MiST
Topic: NES core on MiST
Replies: 209
Views: 83718

Re: NES core on MiST

No save, FDS and things which needs the board specific parts implemented are done (I'm not a big NES fan, and it was mostly a copy-paste port). However I've noticed some parts are really coded in a way that assumes infinite FPGA resources, and I don't really like it. The PPU is bigger than the one i...
by slingshot
Tue Feb 18, 2020 2:44 pm
Forum: MiST
Topic: HELP WANTED: MRA file converter for MiST
Replies: 149
Views: 7117

Re: HELP WANTED: MRA file converter for MiST

So, let's say I replace this: .port2_a ( {sp_ioctl_addr[18:17], sp_ioctl_addr[14:0], sp_ioctl_addr[16]} ), // merge sprite roms to 32-bit wide words by this .port2_a ( sp_ioctl_addr ), Am I good to go? I think it should work if you don't touch other places (easy to see, this one should affects spri...
by slingshot
Tue Feb 18, 2020 1:09 pm
Forum: MiST
Topic: HELP WANTED: MRA file converter for MiST
Replies: 149
Views: 7117

Re: HELP WANTED: MRA file converter for MiST

Why are we doing this then? Is it so you can run more games on the same hardware by externalising the byte-shuffling and other config stuff? When I wrote this code, the MRA tool didn't exist even in imagination, so I had to solve it somehow. But in the future it can be useful (Jotego requested it a...
by slingshot
Tue Feb 18, 2020 10:44 am
Forum: MiST
Topic: HELP WANTED: MRA file converter for MiST
Replies: 149
Views: 7117

Re: HELP WANTED: MRA file converter for MiST

Only with modifying the code, the cores do the byte-shuffling in HDL:
https://github.com/Gehstock/Mist_FPGA/b ... ST.sv#L163
by slingshot
Sun Feb 16, 2020 9:38 pm
Forum: MiST
Topic: NEW OR UPDATED ARCADE CORES
Replies: 742
Views: 182148

Re: NEW OR UPDATED ARCADE CORES

retrofun wrote:Whoops, sorry. Too much stuff - no time to read the READMEs :mrgreen: So those glitches are normal.

I don't say it's normal, but we have to live with them until somebody fix it :)
by slingshot
Sun Feb 16, 2020 9:37 pm
Forum: MiST
Topic: NEW OR UPDATED ARCADE CORES
Replies: 742
Views: 182148

Re: NEW OR UPDATED ARCADE CORES

Usage: Example: mra -z /path/to/mame/roms Tron.mra Sorry. It has been too confusing to me after 5 years using the classic method. Also, on the menu core from Sorgelig or when you want to change the core RBF and ARC names are displayed. Games are now working. Thanks!! The Examples have some copy-pas...
by slingshot
Sun Feb 16, 2020 9:03 pm
Forum: MiST
Topic: NEW OR UPDATED ARCADE CORES
Replies: 742
Views: 182148

Re: NEW OR UPDATED ARCADE CORES

vebxenon wrote:Yes, sure. After Rampage loads :shrug:

Then I think somebody didn't read the instructions which mention ARC files.
by slingshot
Sun Feb 16, 2020 8:54 pm
Forum: MiST
Topic: NEW OR UPDATED ARCADE CORES
Replies: 742
Views: 182148

Re: NEW OR UPDATED ARCADE CORES

vebxenon wrote:Well. Same happens. Also on MCR3, only Rampage works. Max RPM, Power Drive and Sarge are all displaying scrambled graphics.

Are you loading the ROMs via the OSD Load ROM?
by slingshot
Sun Feb 16, 2020 8:45 pm
Forum: MiST
Topic: NEW OR UPDATED ARCADE CORES
Replies: 742
Views: 182148

Re: NEW OR UPDATED ARCADE CORES

Midway MCR Scroll, md5sum in Turbo Tag.mra seems to be wrong. It is the same as in Spy Hunter.mra: Thanks for noticing, just usual copy-paste error :) Work both here. But Sinistar has scrambled graphics in game sometimes for a very short time (flashing) and weird high pitch sounds. Yeah, that's men...
by slingshot
Sun Feb 16, 2020 8:23 pm
Forum: MiST
Topic: NEW OR UPDATED ARCADE CORES
Replies: 742
Views: 182148

Re: NEW OR UPDATED ARCADE CORES

vebxenon wrote: I don't have the old roms.

As they're under version control in Gehstock's repo, it's not terribly hard to find them.
Let me find for you:
https://github.com/Gehstock/Mist_FPGA_C ... 20Hardware
by slingshot
Sun Feb 16, 2020 7:56 pm
Forum: MiST
Topic: NEW OR UPDATED ARCADE CORES
Replies: 742
Views: 182148

Re: NEW OR UPDATED ARCADE CORES

No problem here. Did you start with the ARC files, not with the old RBF? Ot try with the old ROMs, they should still work.

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