Atari 7800 / 2600

[dstevens]

I'm seeing minor graphics corruption with the latest release (Atari2600_20200824.rbf) on Pitfall II. The ROM has the correct md5 checksum and has a p2 extension. The issue seems isolated to the top and bottom of the sprites. I also verified everything works fine on a real Atari 2600.

Attached are some screen shots showing some of the issues.

Line under Harry

1.png (418 Bytes) Viewed 37072 times

Top of scorpio is black

2.png (486 Bytes) Viewed 37072 times

Top and bottom of bat is wrong

3.png (637 Bytes) Viewed 37072 times

Top of the red cross is black

4.png (695 Bytes) Viewed 37072 times

[thorr]

Thanks! I had it working previously and I thought something broke. It turns out I had made a _Favorites folder and put Pitfall II in there and renamed the extension. I didn't rename it in the main rom folder. As soon as I went to my Favorites, Pitfall II was there and it worked fine. The music is an octave too low and his hair is missing though, lol.

[Chris23235]

Thanks! I had it working previously and I thought something broke. It turns out I had made a _Favorites folder and put Pitfall II in there and renamed the extension. I didn't rename it in the main rom folder. As soon as I went to my Favorites, Pitfall II was there and it worked fine. The music is an octave too low and his hair is missing though, lol.

Pitfall II was broken after the update a few days ago and it was fixed with yesterdays update.

[redsteakraw]

Does anyone else have the OSD bug where after you launch a game you can't launch the OSD over analog output but it displays over the HDMI output?

[redsteakraw]

To trigger the bug launch Custer's Revenge then the OSD won't display. It seems to only happen with certain games.

[NML32]

To trigger the bug launch Custer's Revenge then the OSD won't display. It seems to only happen with certain games.

Yes, I can confirm.

[rcade]

Thanks! I had it working previously and I thought something broke. It turns out I had made a _Favorites folder and put Pitfall II in there and renamed the extension. I didn't rename it in the main rom folder. As soon as I went to my Favorites, Pitfall II was there and it worked fine. The music is an octave too low and his hair is missing though, lol.

Pitfall II was broken after the update a few days ago and it was fixed with yesterdays update.

Doesn't seem to be fixed per the above report (sprite and sound issues).

[Chris23235]

Thanks! I had it working previously and I thought something broke. It turns out I had made a _Favorites folder and put Pitfall II in there and renamed the extension. I didn't rename it in the main rom folder. As soon as I went to my Favorites, Pitfall II was there and it worked fine. The music is an octave too low and his hair is missing though, lol.

Pitfall II was broken after the update a few days ago and it was fixed with yesterdays update.

Doesn't seem to be fixed per the above report (sprite and sound issues).

You mean dstevens post? This was about Pitfall and not Pitfall II.

[dstevens]

Pitfall II was broken after the update a few days ago and it was fixed with yesterdays update.

Doesn't seem to be fixed per the above report (sprite and sound issues).

You mean dstevens post? This was about Pitfall and not Pitfall II.

My post was about Pitfall II. It says “Pitfall II” and the pictures are of Pitfall II

[Chris23235]

Doesn't seem to be fixed per the above report (sprite and sound issues).

You mean dstevens post? This was about Pitfall and not Pitfall II.

My post was about Pitfall II. It says “Pitfall II” and the pictures are of Pitfall II

Sorry, I should read and look much more closely before typing

[kaz321123]

Can someone add:

Pac-Man 8k (Dintar) to the Atari 2600 compatibility list? He also has a 4k version.

It is my favorite game for the system by far.

It would not boot for me, so current state is non-working.

[NML32]

Can someone add:

Pac-Man 8k (Dintar) to the Atari 2600 compatibility list? He also has a 4k version.

It is my favorite game for the system by far.

It would not boot for me, so current state is non-working.

You should be able to update and add to the sheet.

[kaz321123]

I added it.

[NML32]

I added it.

Thank you.
I updated the ROM link to https://atariage.com/forums/topic/23870 ... nt-3246370
Hopefully, that is the latest build.

[kaz321123]

You might like this, you linked to MY forum post on Atariage. And that's not the latest build, so I posted again on that same thread-the correct current 'dintar's pac-man', with cornering-and also linked to his thread.

What are the odds that you linked to my post? Neato. I guess both usernames are 'kaz'.

Here is the last time Dintar posted, and he has a link to his latest version:


---------------------------------------------
So the 'official' link to the rom is here:
https://atariage.com/forums/topic/22915 ... /#comments
-------------------------------------------------

Hopefully, that covers everything.

[kaz321123]

thanks for making that google doc!

the 2600 definitely has a unique charm and games like demon attack, river raid, and blinky goes up are surprisingly fun.

TsZHhOM.gif (36.4 KiB) Viewed 36847 times

i seem to find fun new games everytime i boot up the mister!

Those games are wonderful. Make sure to try: Stay Frosty 2, next.

And my all time favorite 2600 game (a homebrew): Dintar's Pac-Man (8k). Just astounding!

[NML32]

The MiST A2600 core got another update by gyurco. It looks like some of the fixes have already been applied to MiSTer by Sorgelig. Maybe there are some new updates that could be added to MiSTer?

MiST Changes:
**a2600_200831.rbf**
- TIA: fix divider by 6 (E.T., but affects all C,D,E audio waveforms)
- Update the DPC mask flags after changing the counters (Pitfall II)
- TIA: transparent latches for the color registers (D.K.VCS)
- TIA: don't apply pf_score when pf_priority=1 (Bobby is Going Home)

I also noticed the Bonus countdown displays properly on MiST D.K. VCS but not MiSTer. I'm not sure when it was fixed on MiST.

Github gyurco:
https://github.com/gyurco/TCA2601

I've attached D.K. VCS

A2600 DK VCS.zip

(31.41 KiB) Downloaded 353 times

[skooter]

It would be interesting to have a pause button in the Atari 2600 core.

[rhester72]

Are there pause buttons in any core? You couldn't pause in real life, so...

[ash2fpga]

AFAIK, CPS1 does not have pause in real life, but the core has it.

[skooter]

Are there pause buttons in any core? You couldn't pause in real life, so...

So we are in 2020 using FPGA devices and we don't have to be limited by the limitations of the real hardware anymore.

CPS1 has pause, the real hardware doesn't.
We can pause SMS on the controller, we can't with the real hardware.
We can use save states in some cores, we can't in the real hardware.
We can even fast forward in the GBA core, we can't in the real hardware.
The list goes on...

People who want real feelings can always not use the added facilities.

By the way, I can pause in real hardware, I installed the 2600RGB kit in my Atari 2600 and I've added a pause button. There were even Atari 2600 clones back on the '80s which included a pause button out-of-the-box.

[Newsdee]

It can be done, the question is whether a dev is motivated to do it.
I've found some details on how it works, which may help:
https://www.victortrucco.com/Atari/Atar ... riPausa_en

[NML32]

The MiST A2600 core got another update by gyurco. It looks like some of the fixes have already been applied to MiSTer by Sorgelig. Maybe there are some new updates that could be added to MiSTer?

MiST Changes:
**a2600_200831.rbf**
- TIA: fix divider by 6 (E.T., but affects all C,D,E audio waveforms)
- Update the DPC mask flags after changing the counters (Pitfall II)
- TIA: transparent latches for the color registers (D.K.VCS)
- TIA: don't apply pf_score when pf_priority=1 (Bobby is Going Home)

I also noticed the Bonus countdown displays properly on MiST D.K. VCS but not MiSTer. I'm not sure when it was fixed on MiST.

Github gyurco:
https://github.com/gyurco/TCA2601

I've attached D.K. VCS
A2600 DK VCS.zip

I added a screen shot of MiST vs MiSTer D.K.VCS_1.0_170304_NTSC
Don't worry about Mario or the oil barrel looking off it's just the screen shot and the Atari flicker.

MiST

MiST-Crop.jpg (71.3 KiB) Viewed 38525 times

MiSTer

MiSTer-Crop.jpg (84.97 KiB) Viewed 38525 times

[kaz321123]

Compatibility update:

Pac-Man (pacman2600_8k_v8test_corn)
Author: Dintar

Game loads, no display, sound works. Sure was fun trying to 'play' the game blindfolded.

I use a vga to component cable to a retail crt. Not sure how it would do to an hdmi.

I updated the compatibility list.

[NML32]

Compatibility update:

Pac-Man (pacman2600_8k_v8test_corn)
Author: Dintar

Game loads, no display, sound works. Sure was fun trying to 'play' the game blindfolded.

I use a VGA to component cable to a retail crt. Not sure how it would do to an HDMI.

I updated the compatibility list.

The compatibility sheet is updated.
I can get sound and video when connected to my Sony PVM 15KHz and TV via Component but the screen rolls. Both connections use the VGA add-on board.

Edit: Both Pac-Man from Dintar work fine on MiST.

[kaz321123]

So the game works fully on the Sony PVM, and rolls on the TV? Or rolls on both?

[NML32]

So the game works fully on the Sony PVM, and rolls on the TV? Or rolls on both?

Rolls on both.
It seems to roll faster on the PVM.
It looks perfect on the MiST FPGA.

[NML32]

So the game works fully on the Sony PVM, and rolls on the TV? Or rolls on both?

Here is a comparison between MiST and MiSTer with HDMI (Computer Monitor), RGB 15 KHz (Sony PVM), and Component (TV)

https://youtu.be/SZWvsuGoTNk

[NML32]

I'm seeing these issues with other games. I tried A-VCS Tech Challenge, Farmer Dan, and Gopher. With HDMI and VGA the sound works with a blank screen, 15KHz RGB and Component has sound and video but screen rolls. (works on MiST I tried both VGA on a computer monitor and 15KHz on my PVM).

[paulbnl]

The problem with the Pac-Man game is that it never enables VBlank and MiSTer uses that to generate Vsync.

Try this version. It generates VBlank from VSync instead which also fixes the centering on HDMI compared to a CRT. For example the "1981. Atari. Inc" text from Asteroids.

The blanking has been set to reduce black borders on HDMI for most games but some games use more of the screen so those might be cropped.

It also has an option to output the original VBlank.

https://drive.google.com/file/d/1DQR_S5 ... sp=sharing