Re: iPad Windows Alternative ?

Posted on 2020-11-17, 14:02

by

by jmarsh

in Milliways

in Milliways

sf78 wrote on 2020-11-17, 12:09: The last one for me is the total lack of support for WebM. Apple, creators of mov/mp4, not willing to support a competing format created (/adopted/reappropriated) by Google? Who would have thought!

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Re: Bought these (retro) hardware today

Posted on 2020-11-16, 05:35

by

by jmarsh

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Fun fact: Alphas are the reason Windows insists (to this day) that memory mappings be aligned to 64KB boundaries instead of 4KB, natural page size of x86 (and nearly every other architecture) and thus infuriating every emulator developer working on systems that make use of a MMU.

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Re: Boot command

Posted on 2020-11-12, 12:45

by

by jmarsh

in DOSBox Development

in DOSBox Development

Was the disk an image file mounted with imgmount?

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Re: What if Intel made a new 64-bit 386 or 486. . .

Posted on 2020-11-12, 06:23

by

by jmarsh

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

It allowes execution of clean 16-Bit code, just as the 286 Protected Mode did. No it doesn't. The byte register encodings for long mode are different from 16-bit/32-bit mode, some combinations of operations simply aren't possible. Even using compatibility mode, it is not valid to use small (16-bit) …

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Re: What if Intel made a new 64-bit 386 or 486. . .

Posted on 2020-11-12, 03:43

by

by jmarsh

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Jo22 wrote on 2020-11-12, 02:13: As I told a few times before, Long Mode allows 16-Bit Protected Mode instructions/code still. It supports 16-bit data manipulation. It doesn't support 16-bit addressing or the use of segment registers, which were both essential features for 16-bit code.

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Re: What if Intel made a new 64-bit 386 or 486. . .

Posted on 2020-11-11, 07:33

by

by jmarsh

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

But that wouldn't give you 64b, indeed you'd probably need a new, incompatible 64b set of instructions, which would not be supported. Which is exactly what happened with the Itanium, and why it was a tremendous flop. Modern x86 CPUs aren't anything close to RISC, and will not be as long as they …

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Re: What if Intel made a new 64-bit 386 or 486. . .

Posted on 2020-11-11, 06:55

by

by jmarsh

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

You don't remember the Itanium? That's ok, neither does anyone else.

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Re: Using a vintage multi-track recorder as a mixer, namely the Roland VS-880EX - might apply to other Roland VS- units

Posted on 2020-11-11, 04:45

by

by jmarsh

in Marvin \ Sound

in Marvin \ Sound

I figured out the behaviour 4 years ago, trying to use an SD->SATA adapter to run a linux box. Couldn't find any similar information on the web so thought I just had a dud device. Wasn't until today when I saw the adapter in my spares box and noticed it used a FC1307 chip that I realized it was the …

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Re: Using a vintage multi-track recorder as a mixer, namely the Roland VS-880EX - might apply to other Roland VS- units

Posted on 2020-11-11, 03:34

by

by jmarsh

in Marvin \ Sound

in Marvin \ Sound

Regarding the behaviour of the FC1307 based adapters; the partitions/MBR don't actually get wiped, at cold-power-on the adapter (for whatever reason, I haven't narrowed it down by testing things like different partition setups) just starts returning a 512 byte ATA IDENTIFY response at the beginning …

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Re: Good version of FREE DOS for 8088 XT. Memory friendly

Posted on 2020-11-10, 04:26

by

by jmarsh

in Marvin \ Software

in Marvin \ Software

pentiumspeed wrote on 2020-11-10, 00:32: Nope. 8088/8086 processors are 16 bits ALU based. Cheers, As long as a system implements a carry flag it can have precision larger than the native word size. Look at modern computers, doing 128/256/512 bit crypto all the time using only 32/64 bit registers.

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Re: Struggling to format a 2 GB SD card (in an IDE-SD adapter) to full capacity

Posted on 2020-11-08, 02:54

by

by jmarsh

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I've always wondered why more people don't use an IDE-to-SATA converter and a SATA SSD. Because it's not as convenient. You then need a molex->sata power adaptor as well, and a mounting plate to fit a 2.5" SSD in a 3.5" bay. Then if you want to copy files onto it from another machine you need …

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Re: DosBox Distro - A LiveUSB made simple

Posted on 2020-11-05, 08:48

by

by jmarsh

in DOSBox General

in DOSBox General

Put them somewhere already accessible inside DOSBox and just access them that way, e.g. put the "CD" folder under /dosbox and imgmount it using c:\CD\CD1.iso. Then you don't need to worry about what the linux path is.

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Re: DosBox Distro - A LiveUSB made simple

Posted on 2020-11-05, 02:48

by

by jmarsh

in DOSBox General

in DOSBox General

It does, but it's unclear what the poster expects them to be relative to; the current working dir on a mounted drive inside DOSBox, the dir DOSBox was launched from, the path to the DOSBox executable, the location of a config file that contains the imgmount commands... The obvious mistake would be …

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Re: DosBox Distro - A LiveUSB made simple

Posted on 2020-11-04, 18:56

by

by jmarsh

in DOSBox General

in DOSBox General

Use "imgmount" to mount images, not "mount".

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Re: 320x200 on a 16:9 monitor - [partial?] solution

Posted on 2020-11-04, 16:24

by

by jmarsh

in DOSBox General

in DOSBox General

Don't use fullresolution=original, set it to desktop or whatever the native resolution of your screen is (or tell the nvidia drivers to preserve the aspect ratio, not scale-to-fit).

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Re: 320x200 on a 16:9 monitor - [partial?] solution

Posted on 2020-11-04, 16:03

by

by jmarsh

in DOSBox General

in DOSBox General

opengl output does not double lines, it uses bilinear resampling.

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Re: 320x200 on a 16:9 monitor - [partial?] solution

Posted on 2020-11-04, 15:38

by

by jmarsh

in DOSBox General

in DOSBox General

Have you tried output=opengl with aspect=true instead?

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Re: It is worth it to upgrade a SB PCI128 to a Live!?

Posted on 2020-11-03, 08:45

by

by jmarsh

in Marvin \ Sound

in Marvin \ Sound

The upside of the SB128 PCI is that you get wavetable synthesis for any game that supports general midi/MPU-401, unlike the AWE32 and such that require explicit support. The poor fm synth isn't really all that important when most games support midi anyway. It supports loading custom .ecw files under …

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Re: Kick Off 2 running in dosbox not working

Posted on 2020-11-03, 05:17

by

by jmarsh

in DOSBox Games/Apps

in DOSBox Games/Apps

Make an image of the disk and mount that instead of mounting A:\.

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Re: Assistance needed in Pro Pinball: The Web.

Posted on 2020-11-02, 15:47

by

by jmarsh

in DOSBox Games/Apps

in DOSBox Games/Apps

You guys are both using "/" instead of "\". It might work in some places but it's not a good idea. (It's why mounting the cue file worked with quotes but not without.)

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