Re: $$$ to Convert Lotte's CRT Shader for DosBOX Daum

Posted on 2020-01-08, 22:55

by

by jmarsh

in DOSBox General

in DOSBox General

Pixel perfect shouldn't be adding much; all it does is duplicate pixels. It's just byte-copying without any processing, unlike other scalers. But you can get the GPU to do it for you by using aspect=true, output=openglnb and an output resolution that is a multiple of both 4:3 and the original …

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Re: $$$ to Convert Lotte's CRT Shader for DosBOX Daum

Posted on 2020-01-08, 21:31

by

by jmarsh

in DOSBox General

in DOSBox General

Nothing to do with switch-case statements. Fade-in/outs are nearly always implemented using palette changes which have significant emulation cost (regardless of the output mode).

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Re: Steam bootstrapper - require 2nd login?

Posted on 2020-01-07, 20:56

by

by jmarsh

in Milliways

in Milliways

Then you're the product, not the consumer.

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Re: Steam bootstrapper - require 2nd login?

Posted on 2020-01-07, 20:41

by

by jmarsh

in Milliways

in Milliways

Did you pay for it?

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Re: Running Dos 6.22 on dosbox (clean svn): why do the cycles switch to "max"?

Posted on 2020-01-07, 20:29

by

by jmarsh

in DOSBox General

in DOSBox General

It does happen if you manage to load EMM386 in DOSBox's DOS. V86 mode doesn't really achieve much (except create a lot more work for the emulator) so there's no reason to have it active by default. It does get activated by a few games (Wing Commander series).

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Re: Running Dos 6.22 on dosbox (clean svn): why do the cycles switch to "max"?

Posted on 2020-01-07, 16:48

by

by jmarsh

in DOSBox General

in DOSBox General

V86 mode is protected so it's treated the same as games.

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Re: Running Dos 6.22 on dosbox (clean svn): why do the cycles switch to "max"?

Posted on 2020-01-07, 15:27

by

by jmarsh

in DOSBox General

in DOSBox General

DOS is probably loading EMM386 which switches to V86 mode.

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Re: PowerPC Dynamic Recompiler (patch)

Posted on 2020-01-05, 08:43

by

by jmarsh

in DOSBox Development

in DOSBox Development

I definitely remember finding a bug in Descent's source code related to the timed text rendering on briefing screens but I can't remember the details. I think it was rendering everything twice when adding each letter which caused obvious slowdown - you can see it in the enemy briefings, the rotating …

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Re: Remapping BREAK key on Macbook for interrupting GW-BASIC and other stubborn ancient programs

Posted on 2020-01-05, 07:13

by

by jmarsh

in DOSBox General

in DOSBox General

The "Pause" button in the mapper isn't a key, it's an emulator event (that funnily enough, pauses emulation). Disregard it. The "SCL" key is the one you need to add a binding to. But if you're going to bind F12 to it be aware ctrl+F12 is already bound to another event (cycles+) by default. Simple …

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Re: PowerPC Dynamic Recompiler (patch)

Posted on 2020-01-04, 08:09

by

by jmarsh

in DOSBox Development

in DOSBox Development

Palette updates can cause slowdown in DOSBox, I know Descent's credits use them and the loading screens have fade-in/fade-outs. I can't remember if they're done unconditionally for every frame or only when a color is actually modified though.

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Re: Welcome to the updated VOGONS

Posted on 2020-01-02, 06:22

by

by jmarsh

in Milliways

in Milliways

The site uses emoji now, and there are around 3000 of those, so there’s not a button to list them any more since it would be a very large list. You can use a built-in emoji keyboard :keyboard: of your OS, :sparkles: :shortcodes: :sparkles: (which have autocompletion as you type), or the O.G. …

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Re: PowerPC Dynamic Recompiler (patch)

Posted on 2020-01-02, 05:56

by

by jmarsh

in DOSBox Development

in DOSBox Development

Smells like a 64-bit ABI issue, but I'm not completely positive because it looks like the backtrace info for the call to mem_writeb_checked_drc is hiding the real parameter value. The emitted instructions look like translation of LEA: r29 is loaded from a cpu reg (base), added with a segment reg, …

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Re: Giant retro TV memories

Posted on 2020-01-02, 03:34

by

by jmarsh

in Milliways

in Milliways

I doubt they'd be bright enough to work with a light gun.

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Re: In this new decade, let us remember the Y2K Bug

Posted on 2020-01-02, 02:42

by

by jmarsh

in Milliways

in Milliways

Were they the same guys who decided the first hour of each day would use the biggest number (12)?

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Re: How many watts is my power supply->

Posted on 2019-12-31, 11:36

by

by jmarsh

in Milliways

in Milliways

DC OUTPUT: 350W

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Re: PowerPC Dynamic Recompiler (patch)

Posted on 2019-12-31, 05:03

by

by jmarsh

in DOSBox Development

in DOSBox Development

Double-check the code emitted by gen_mov_direct_ptr(), it's responsible for updating cache.block.running at the start of each block. There's a couple of suspicious looking lines in gen_addr(). off = addr - (Bit64s)block_ptr; if ((Bit64s)off == off) I think this should be a cast to a Bit16s. Probably …

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Re: PowerPC Dynamic Recompiler (patch)

Posted on 2019-12-30, 07:08

by

by jmarsh

in DOSBox Development

in DOSBox Development

There's something wrong with the block linking. If you look near the beginning of cache_init(), each cache_block has its links initialized to (CacheBlockDynRec *)1. That seems to be what the initial dump of 0x7fffe6de00d8 shows, which is ok; the proper pointers to the link_block functions get placed …

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Re: Squirrels, squirrels, let's go nutz for squirrels and whatever other backyard wildlife you have.

Posted on 2019-12-29, 22:07

by

by jmarsh

in Milliways

in Milliways

Contrary to belief, Redbacks aren't very deadly. Nobody has died from a bite for decades and they're not likely to be lethal even if untreated - just painful/uncomfortable.

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Re: What game are you playing now?

Posted on 2019-12-29, 06:23

by

by jmarsh

in Milliways

in Milliways

Pfft if you've only played through Indy once you've got two more paths to do.

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Re: CM-32L: Are these capacitors leaking?

Posted on 2019-12-29, 02:18

by

by jmarsh

in Marvin \ Sound

in Marvin \ Sound

Now that I look again with a bigger monitor, that 47uf cap does look a bit deformed at the bottom. Not from age/leakage but probably caused when it was mounted.

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