Re: Acculogic RAMpAT! - Anybody with a working card here?

Posted on 2020-03-08, 05:42

by

by jmarsh

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I'm confused by your picture; The DS1292 was U6 which is now empty, and you've put something new in U1 and circled it when talking about the pincount of the DS1292?

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Re: Misinformation about PC specs in the 90's (e.g. "they were terrible! The CPUs ran at 2 MHz or something!")

Posted on 2020-03-06, 15:15

by

by jmarsh

in Milliways

in Milliways

What is the world coming to when you can't trust youtubers to provide factually correct information?

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Re: Pyrosaurus - Validate modem configuration and use case

Posted on 2020-03-05, 21:19

by

by jmarsh

in DOSBox Games/Apps

in DOSBox Games/Apps

MidnightSun wrote on 2020-03-05, 15:30: The Python Server is sending data both to DOSBox and Pyrosaurus, the details of which are in the original post above. What details? You said it switches to binary mode then "sends actual data." What is this data?

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Re: Pyrosaurus - Validate modem configuration and use case

Posted on 2020-03-05, 14:50

by

by jmarsh

in DOSBox Games/Apps

in DOSBox Games/Apps

leileilol wrote on 2020-03-05, 12:06: Python would be used to satisfy the modem requests. But how? The game is obviously waiting for some acknowledgement from the server, if Python is just configured to accept incoming connections but nothing else then that's obviously why nothing is happening.

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Re: Pyrosaurus - Validate modem configuration and use case

Posted on 2020-03-05, 06:33

by

by jmarsh

in DOSBox Games/Apps

in DOSBox Games/Apps

What exactly is "Python Server"?

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Re: Windows 95/98 emulation/VM options?

Posted on 2020-03-04, 18:15

by

by jmarsh

in PC Emulation

in PC Emulation

Jorpho wrote on 2020-03-04, 16:52: There's also boxedwine (wine running in Linux within DOSBox) Boxedwine has nothing to do with DOSBox.

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Re: Need advice on battery replacement for Biostar MB-1212V motherboard

Posted on 2020-03-04, 03:39

by

by jmarsh

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

1.8V with no load maybe... Any manufacturer selling AAs that output more than 1.5V would be setting themselves up for trouble.

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Re: Backpack 5.25" Floppy Drive for PC?

Posted on 2020-03-02, 08:02

by

by jmarsh

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Are you sure it's a plain old 5.25" floppy and not a zip/ls-120/other high capacity drive?

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Re: Faux86 - an 8086 emulator for Raspberry Pi that runs bare metal

Posted on 2020-03-01, 23:51

by

by jmarsh

in PC Emulation

in PC Emulation

Edit: links removed, company involved seems to be abusing DOSBox/violating GPL so no need to give them any advertising.

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Re: Modem emulation issues

Posted on 2020-03-01, 14:54

by

by jmarsh

in DOSBox General

in DOSBox General

You think they would have patched the code if there was nothing wrong with it?

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Re: Modem emulation issues

Posted on 2020-03-01, 13:40

by

by jmarsh

in DOSBox General

in DOSBox General

Just because something worked (sometimes) at launch, doesn't mean it isn't bugged.

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Re: Modem emulation issues

Posted on 2020-03-01, 13:31

by

by jmarsh

in DOSBox General

in DOSBox General

You mean like all the games with adlib detection routines that fail on any PC made after ~2000?

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Re: Modem emulation issues

Posted on 2020-03-01, 13:04

by

by jmarsh

in DOSBox General

in DOSBox General

No. Interrupts are not predictable, even with fixed clock speeds. The fact that the game wanders off and tries to execute unmapped memory is a dead-giveaway that it's bugged.

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Re: Modem emulation issues

Posted on 2020-03-01, 12:51

by

by jmarsh

in DOSBox General

in DOSBox General

Modem emulation uses blocking TCP transfers, null-modem uses non-blocking. Like I said in the other thread, it's preferable to use null-modem whenever possible. A wifi "modem" won't accurately emulate a serial port+hardware modem combination any more than DOSBox does already.

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Re: Modem emulation issues

Posted on 2020-03-01, 07:44

by

by jmarsh

in DOSBox General

in DOSBox General

I saw the same behaviour with Duke3D (1.3D) but every few tries it would actually work correctly; the data being transferred to/from the game was exactly the same in all cases so it looks like it's just some internal state bug in the game.

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Re: DOSBox 0.74 CPU Benchmark

Posted on 2020-03-01, 02:05

by

by jmarsh

in DOSBox General

in DOSBox General

Official (0.74-3 and older) 64-bit builds have a dynamic core, but it's not the 64-bit dynamic_x86 core.

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Re: Cloning old 486 HDD to CompactFlash or SSD

Posted on 2020-02-29, 02:53

by

by jmarsh

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Early versions of DOS require IO.SYS to be the first file in the root directory (handled by the SYS command) so copying files individually doesn't always work. Later versions of DOS aren't as picky.

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Re: Modem emulation issues

Posted on 2020-02-27, 23:52

by

by jmarsh

in DOSBox General

in DOSBox General

If the BBSes are telnet-based you need to issue the ATNET1 command before dialing.

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Re: New Performance Issue In Mac OS Catalina

Posted on 2020-02-26, 03:58

by

by jmarsh

in DOSBox General

in DOSBox General

Maybe vsync is enabled? I was going to suggest the same. It seems common for non-windows systems to enable vsync even though DOSBox tells OpenGL not to use it, which causes slowdowns if a game tries to render faster than the current refresh rate (e.g. a 70fps game running on a 60fps display). Easy …

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Re: DOSBox Feature Request Thread

Posted on 2020-02-26, 01:40

by

by jmarsh

in DOSBox General

in DOSBox General

theelf wrote on 2020-02-25, 23:10: dosbox is not usable in this gfx cards That isn't true at all, just use a resolution other than "original".

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