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#112008 - 01/03/18 10:07 PM Re: SVN builds - new driver flood [Re: Anna Wu]  
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crazyc Offline
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[Linked Image]
Lemmings 2 works now but vertical scrolling is jerky.

#112010 - 01/03/18 10:37 PM Re: SVN builds - new driver flood [Re: crazyc]  
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r09 Offline
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Nice! I just tested it and that kind of jerkiness doesn't look like anything we've fixed so far. It will be interesting to look at.

Also, your change has the side effect of making every Psygnosis game (except SOTB2) get much farther. Awesome even *seems* fully playable, but I've only tried it for a bit.

#112017 - 01/04/18 02:51 PM Re: SVN builds - new driver flood [Re: Anna Wu]  
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Edstrom Offline
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Mybrain 3000/Ericsson step/one now has colors
[Linked Image]
Some aspect ratio issues and high resolution modes next

#112023 - 01/04/18 06:29 PM Re: SVN builds - new driver flood [Re: Anna Wu]  
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R. Belmont Offline
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Nice!

#112047 - 01/05/18 05:10 PM Re: SVN builds - new driver flood [Re: Anna Wu]  
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r09 Offline
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Another summary of the recent Towns progress, now with 100% more shitty porn games.

First, a fun case of "no one should try to do this, but the people who made this game did it anyway, and it somehow works": the Towns port of Hatchake Ayayo-san Pro-68k draws the text spoken by the characters (and only that) with the alpha bit enabled, even though it makes absolutely no sense because it's in single-layer mode. I think the X68000 high color mode uses the full 16 bits, so maybe it's some kind of leftover from the original version?

Anyway, apparently the hardware is supposed to just ignore that and draw everything.

[Linked Image]

The line drawing code didn't take into account that 256 color mode is single-layer only (setting the PMODE bit forces the layers to be either 16 or 32k colors) so pixels with palette index 0 are supposed to be always drawn. By fixing this, some of the most glorious(ly cheesy) things in the Towns catalog can now be fully enjoyed, such as the FMVs in Genocide Square...

[Linked Image]

Or the Fujitsu demonstration program included with TownsOS 1.1.

[Linked Image]

And by implementing the HSYNC and VSYNC flags in port 0xcff86, the entire 4th Unit series and almost all Birdy Soft games are at least bootable.

[Linked Image]

[Linked Image]

#112053 - 01/05/18 10:27 PM Re: SVN builds - new driver flood [Re: Anna Wu]  
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crazyc Offline
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[Linked Image]
Requires reworking the toc read and faking some unknown ports. Unfortunately breaks lemmings 2 in the process.

#112054 - 01/05/18 10:38 PM Re: SVN builds - new driver flood [Re: Anna Wu]  
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R. Belmont Offline
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Posts: 15,954
USA
Nice! If we could get 100% "supported" on the software list by next release that would be amazing.

#112061 - 01/05/18 11:43 PM Re: SVN builds - new driver flood [Re: Anna Wu]  
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r09 Offline
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Posts: 80
Speaking of that, there is something that's been bugging me for a while: a lot of floppy-based games (mainly Alice Soft ones) don't boot because the floppy drives always fail to read the disk the first time they are accessed (and only the first time).

I've found that if I add "m_fdc->set_force_ready(true)" to machine_start it seems to solve that issue, but I haven't submitted that because I don't really understand the floppy system all that well, and I don't know if it's the "right" solution (as in, more or less accurate to real hardware).

#112062 - 01/05/18 11:53 PM Re: SVN builds - new driver flood [Re: Anna Wu]  
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crazyc Offline
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Prime suspect for that would be the motor control.

#112068 - 01/06/18 02:43 AM Re: SVN builds - new driver flood [Re: Anna Wu]  
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crazyc Offline
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[Linked Image]
Got lemmings 2 back working and Ultima 4 starts now too.

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