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Posted By

Litwr
on 2016-12-11
12:44:40
 ep128emu is updated!

https://sourceforge.net/projects/ep128emu/files/ep128emu2/
It is the first updates since 2011. So it is possible to see plus4emu updated too... I had made a bug and suggested features list...

Posted By

gerliczer
on 2016-12-11
14:15:00
 Re: ep128emu is updated!

I wouldn't raise my hopes too high. IstvanV frequents their forum regularly but here he's been last seen in July 2011.

Posted By

SVS
on 2016-12-11
14:24:31
 Re: ep128emu is updated!

I did try to write him an email a pair of years ago, but... no answer :-/

Posted By

Gaia
on 2016-12-11
15:52:35
 Re: ep128emu is updated!

The source was moved to Github: https://github.com/istvan-v/plus4emu. There are updates as well (mostly backported from the Enterprise).

Posted By

gerliczer
on 2016-12-21
13:11:58
 Re: ep128emu is updated!

IstvanV updated the plus4emu to 1.2.10 beta a couple of days ago. This is a pleasant surprise after so many years of inactivity.

Posted By

Csabo
on 2016-12-21
14:31:03
 Re: ep128emu is updated!

Any ideas on what's new? This should be front-page news.

Posted By

Gaia
on 2016-12-21
14:49:54
 Re: ep128emu is updated!

Right here:

https://github.com/istvan-v/plus4emu/blob/master/NEWS

Posted By

MMS
on 2016-12-21
22:40:07
 Re: ep128emu is updated!

WOW, that is fantastic! I am really happy to see this post!

Plus4emu is still my favourite emulator, mainly because of the faithful CRT TV emulation and lot of possible video settings.
With them I can reproduce well my childhood's Orion Viking television screen .

Thank you, Istvan! ;-)

Posted By

Luca
on 2016-12-28
09:37:16
 Re: ep128emu is updated!

Ok, dunno how to use this installer, mmm...

Posted By

gerliczer
on 2016-12-28
09:48:46
 Re: ep128emu is updated!

What is the problem? There is a link called releases above that magenta or what is that colour line. That leads to the binary releases. The installer folder is part of the source tree.

Posted By

Luca
on 2016-12-28
15:29:04
 Re: ep128emu is updated!

Oh wow, I don't know how basically GitHub works Got it, thanks.

Posted By

gerliczer
on 2016-12-28
15:57:26
 Re: ep128emu is updated!

Me neither. But I did assume that it should be accessed without jumping through hoops, so I took the time and tried to read everything on the screen.

Posted By

Mad
on 2016-12-28
16:53:41
 Re: ep128emu is updated!

The "resample to monitor refresh rate" option is pure gold, btw.. So the scrollers don't even jitter anymore.. Would be interessting how this is done.

Posted By

Gaia
on 2016-12-29
14:32:07
 Re: ep128emu is updated!

It's interpolating the neighbouring 50 Hz frames at refresh barriers on the expense of more washed out frames and slightly increased latency.

It's very cool, though these days I prefer setting my monitor refresh rate to either 50 or 100 Hz

Posted By

gerliczer
on 2017-05-27
08:35:46
 plus4emu testing help needed

Could someone run IstvanV's test program attached to the discussion https://github.com/istvan-v/plus4emu/issues/2 about plus4emu's potential issue on real hardware, please?

Posted By

BSZ
on 2017-05-27
13:32:57
 Re: ep128emu is updated!

Hmmm... Very interesting:

http://bsz.amigaspirit.hu/pics/plus4-videotest1.png

Real hardware, video digitized by the BT878 card.

Posted By

BSZ
on 2017-05-27
14:31:18
 Re: ep128emu is updated!

This picture is digitized by the external CBVS/S-Video to VGA converter, based on SAA7113? Photo from the monitor:

http://bsz.amigaspirit.hu/pics/plus4-videotest2.jpg

The interesting "double line" is not shown... The digital processing of this CVBS signal not correct.

Posted By

gerliczer
on 2017-05-27
14:53:19
 Re: ep128emu is updated!

Hi BSZ,

The second picture looks very similar to the one IstvanV inserted into his reply in the issue tracker. But I'm more curious about the inv_test.zip he attached to his last post. I downloaded and run it in plus4emu but the result is a border in that strange pink or whatever colour it is and a BREAK.



Posted By

BSZ
on 2017-05-27
16:17:11
 Re: ep128emu is updated!

I run the inv_test.zip in real hardware, and I show this results:

$00/$D0/$C2: http://bsz.amigaspirit.hu/pics/plus4-videotest4-00D0C2.png
$00/$D1/$C6: http://bsz.amigaspirit.hu/pics/plus4-videotest5-00D1C6.png

(The original version is captured, the name is "...test3-00D1C4", but the forum motor not enabled 3 links... )

The 00D1C4 version is 24.9-25.0 (×2 of course) FPS, the second, 00D0C2 version is 25.0 (×2) FPS, the third 00D1C6 is 24.9-25.0 (×2) FPS. The pictures captured again the BT878 card, the external VGA converter working buggy, if the raster lines number not standard. (!= 312 lines.)

Posted By

IstvanV
on 2017-06-09
07:29:43
 Re: ep128emu is updated!

There is a fix to this issue in the GitHub source code now, but it still needs to be tested if it is correct. A few other fixes and changes since version 1.2.10 are listed in the NEWS file (https://github.com/istvan-v/plus4emu/blob/master/NEWS).

Posted By

bubis
on 2017-06-10
05:04:14
 Re: ep128emu is updated!

Great stuff!

Posted By

IstvanV
on 2017-06-14
15:27:47
 Re: ep128emu is updated!

New binary packages of 1.2.11 beta are now available at GitHub: https://github.com/istvan-v/plus4emu/releases

Posted By

gerliczer
on 2017-06-25
08:12:03
 Re: ep128emu is updated!

/OFF

IstvanV is working on porting Skramble to Enterprise. As the video IC lacks the capability to do horizontal fine scrolling, he's using an interesting technique. The scrolling is emulated via multiple character sets.

/ON

Posted By

MMS
on 2017-06-25
16:10:31
 Re: ep128emu is updated!

/OFF

you surprised me. I though the E128 video IC ("Nick") is much more advanced than what the Plus/4 has.

/ON

Posted By

IstvanV
on 2017-07-05
15:23:19
 Re: ep128emu is updated!

The NICK chip has both advantages and disadvantages compared to TED, but in the particular case of character mode this game, it is mostly disadvantages: there is no hardware horizontal smooth scrolling, and no separate color byte for each character. Thus, the graphics had to be limited to 4 colors, and all characters are low resolution. On the other hand, the start address of the screen can be anywhere, and not just at 2K boundaries, this allows for faster scrolling without having to move large amounts of data. Smooth scrolling was achieved by using multiple character sets, and translating pairs of the original 40 characters to 174 characters with a table. The remaining 82 characters are used by sprites.

By the way, the port is mostly complete, it still needs some tweaking and better sounds, but it is playable.

Posted By

MMS
on 2017-07-07
14:02:50
 Re: ep128emu is updated!

Hi Istvan,
Sound like a nice challenge! I am sure I will check it when ready, I am sure to had a workaround!
Surely the sound need improvement, as with C16 version I always got headache after 20 minutes. ;-D

OFF
My best friend in secondary school was an E128 fan, while I was dedicated to Plus/4. we had a lot of discussion on the two computers, and I do remember he frequently highlighted the 256 colors on screen, but I am confident he never mentioned the reduced screen resolution



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