Re: TTL video capture

Posted on 2023-03-29, 22:50

by

by keenmaster486

in Marvin \ Video

in Marvin \ Video

Update: the RGBtoHDMI works perfectly with a DB9 splitter. The conversion to HDMI is nice and clean. I ordered the wrong gender of splitter, but it still works of course since it’s all just electrically connected to the same place. Filename AAE83730-85B4-47FD-A783-2270CF2F2EBF.jpeg File size 1.81 …

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Re: Antivirus for DOS ?

Posted on 2023-03-28, 19:18

by

by keenmaster486

in Marvin \ Software

in Marvin \ Software

Simply do not insert an infected floppy disk into your machine. Filename het_floppy_virus.png File size 441.43 KiB Views 515 views

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Re: SBEMU: Sound Blaster emulation on AC97

Posted on 2023-03-23, 17:52

by

by keenmaster486

in Marvin \ Sound

in Marvin \ Sound

Just tested the new build. Latency now imperceptible in Commander Keen. Sounds great. No stuttering on my Pentium M (maybe there would be on a slower CPU, who knows). Edit: Epic Pinball still works great. Jazz Jackrabbit and Tyrian return "Loader Error 25". A custom DRO player written by me in …

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Re: What are the best Vga to hdmi scalers or peripherals for MS-DOS games ?

Posted on 2023-03-23, 17:13

by

by keenmaster486

in Marvin \ Video

in Marvin \ Video

What is the reason behind using a capture device? (Sorry, I'm fairly new to the whole "upscaler scene"...thought I was safe with just using a GBS-C...) I got this thread mixed up with the other one talking about capturing - but the OSSC just outputs HDMI and will do so to any old LCD screen getting …

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Re: What are the best Vga to hdmi scalers or peripherals for MS-DOS games ?

Posted on 2023-03-22, 18:02

by

by keenmaster486

in Marvin \ Video

in Marvin \ Video

OSSC + EVGA XR1 Lite working very well for low resolution graphics modes. Better on all modes than the Gefen VGA to DVI scaler (a piece of crap in comparison). I'll make a video at some point. Leave it to the "amateurs" to do something better than the "professionals".

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Re: Why do we collect things? self-reflection and crisis

Posted on 2023-03-20, 21:17

by

by keenmaster486

in Milliways

in Milliways

Because they’re cool and I like using them. It’s just important not to consoom to excess like with any other good thing.

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Re: Epson Equity LT-386SX - need obscure AC adapter, anyone have info?

Posted on 2023-03-18, 20:52

by

by keenmaster486

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Opened it up and found that the pins on the motherboard are labeled: LOW +5v GND +12v GND +12v Forgive my ignorance, but does “LOW” mean something other than a low battery signal from the battery? (The battery connects to the motherboard and the AC adapter connects through the battery)

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Epson Equity LT-386SX - need obscure AC adapter, anyone have info?

Posted on 2023-03-18, 18:47

by

by keenmaster486

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Title says it all. I found this laptop at a recycle center in seemingly fairly good shape besides being very dirty. It's an interesting machine, with a very nice keyboard and a massive battery. The AC adapter, however, which I do not have, is some proprietary thing that connects to the back of the …

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Re: TTL video capture

Posted on 2023-03-18, 02:19

by

by keenmaster486

in Marvin \ Video

in Marvin \ Video

It sounds like a passive splitter may just work. Will have to try this.

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Re: Pentium 75 - Windows 95 or 3.1?

Posted on 2023-03-18, 02:14

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by keenmaster486

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I like the Win31 GUI, but it's not for games. You can obviously make games for it but it is not a game-friendly platform. Game devs largely stuck with DOS pretty much until DirectX arrived.

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Re: Pentium 75 - Windows 95 or 3.1?

Posted on 2023-03-17, 15:28

by

by keenmaster486

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The reason for Windows 3.1 is not games, it’s productivity. You can use it for word processing, spreadsheets, etc if you install MS Office 4.3, and browsing the internet with Netscape 3 and WebOne proxy. DOS and Windows 9x are for games, but games that want 9x probably also would benefit from a 3D …

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Re: Pentium 75 - Windows 95 or 3.1?

Posted on 2023-03-17, 06:00

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by keenmaster486

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

If you already have a separate 95 machine then put DOS and Windows 3.1 on that thing, but imo it doesn't make much sense to have two virtually identical machines with only a higher clock speed and MMX for one, running different operating systems. Is there anything else about the MMX build that makes …

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TTL video capture

Posted on 2023-03-17, 05:51

by

by keenmaster486

in Marvin \ Video

in Marvin \ Video

I'm starting this thread to talk about TTL video capture (MDA, CGA, EGA, etc.). There's already a long and extensive thread on VGA, which seems to be a beast no one has yet fully tamed, but TTL is another story. There's this: https://texelec.com/product/rgbtohdmi-ttl/ The RGBtoHDMI project seems to …

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Re: Informal poll on anecdotal failures of blank floppy media, specifically for documents needed for school or work

Posted on 2023-03-17, 05:45

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by keenmaster486

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I had about the same failure rate back in the mid 2000s when I first bought floppy disks new, as I do now with various older disks I've bought (maybe 10-20%).

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Re: SBEMU: Sound Blaster emulation on AC97

Posted on 2023-03-16, 15:50

by

by keenmaster486

in Marvin \ Sound

in Marvin \ Sound

I can further reduce the period buffer size and build a low-latency-testing version for you to test. but small buffer may also cause distortions since interrupt routines might not be called strictly in time that can feed enough data to the soundcard. Hmm, I am interested in trying this since my …

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Re: SBEMU: Sound Blaster emulation on AC97

Posted on 2023-03-15, 19:06

by

by keenmaster486

in Marvin \ Sound

in Marvin \ Sound

By default the PCI buffer size is 16384 bytes, and 16 bit stereo 22050Hz PCM format will be used, and so the total delay of the buffer is about 185ms, you may use "/k44100" to use higher sample rate, which will halve the delay. I already did have that setting turned on in my testing. Is it possible …

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Re: SBEMU: Sound Blaster emulation on AC97

Posted on 2023-03-14, 04:38

by

by keenmaster486

in Marvin \ Sound

in Marvin \ Sound

The latency might depend on the game? With Duke Nukem 2 on a P3 I'm seeing maybe 50-100ms latency but less than I can properly notice for sound effects. ... edit 2: just observed latency for myself, it's particularly obvious in the menus of doom but far less apparent in actual gameplay The latency …

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Re: SBEMU: Sound Blaster emulation on AC97

Posted on 2023-03-13, 20:20

by

by keenmaster486

in Marvin \ Sound

in Marvin \ Sound

old_pc_f@n wrote on 2023-03-13, 20:02: Shouldn't the latency be much smaller according to this? -- https://github.com/crazii/SBEMU/issues/2 Well, it isn't. It's noticeable. Not quite enough to ruin your gameplay experience, but enough to get on your nerves.

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Re: SBEMU: Sound Blaster emulation on AC97

Posted on 2023-03-13, 17:49

by

by keenmaster486

in Marvin \ Sound

in Marvin \ Sound

I'd like to drop in here that I'm detecting some small latency in the Adlib emulation (not sure about SB) compared to DOSBox and real hardware. Maybe as much as 200-300ms. Edit: stopwatch says 100-200ms.

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Re: The quest for the perfect retro laptop: a saga

Posted on 2023-03-10, 04:56

by

by keenmaster486

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The list of viable DOS gaming laptops is about to get a lot fatter with the release of SBEMU thanks to @crazii

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