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Re: Technological critique

Posted on 2021-03-30, 07:13

in Milliways
Thunderbold.. That PCIe 1.x slot in cable form. *shudder* 😟 And I was used to be excited when Intel announced optical i/o in the form of Lightpeak.. Then it became Thunderbold and Intel dared to praise it as an "innovation". What an insult to the intelligence of their customers. Okay, need to calm …

Re: cf 4gb in dos 6.22

Posted on 2021-03-29, 10:36

So my question is that what could be cause this problem? Or what should I do to solve it that I could be able to transfer data from newer system to the CF card that I can use on my 486 pc? I'm not entirely sure. Hm. Maybe the drive geometry is messed up (the cylinder/sector/heads values). LBA was …

Re: 8" diskette drives on IBM PC

Posted on 2021-03-28, 17:19

in Milliways
That's cool, I didn't know that! 😎 - I've got to confess that 8" floppies were a bit before my time. The 1970s and the 8" era rather was part of my father's youth. From what he told me, it must have been a fascinating era with lots of pioneers entering new fields in research and computing. That …

Re: Command line interpreter

Posted on 2021-03-28, 17:06

in Milliways
old windows 2k etc knows if the executable is a win32 NE/PE executable or a DOS NTVDM executable and does what it needs That's right, reminds me of VDMSound.. :) It hooks into context menu, but only for DOS programs (if memory serves). To make things more complicated, though, some executable types …

Re: Command line interpreter

Posted on 2021-03-28, 15:32

in Milliways
What is the mechanism called when you use command.com and Windows switches to cmd.exe in the background on you automatically? I think it is adequate to say cmd.exe is invoked in the background. NTVDM? Command.com can't run without NTVDM, since it's a 16-Bit Non-Windows application. CMD, on the …

8" diskette drives on IBM PC

Posted on 2021-03-28, 15:23

in Milliways
Hi everyone, Just saw an interesting news at hackaday.com! :) https://hackaday.com/2021/03/27/an-ancient-8-inch-floppy-with-a-pc/ http://boginjr.com/it/hw/8inch-drives/ The idea isn't exactly new, I guess, but that dude also wrote an utility that enables proper use on DOS. Driver.sys and DRIVEPARM …

Re: 2D game benchmarks (DirectDraw etc)

Posted on 2021-03-27, 02:16

Final Reality can do 2D and 3D benchmarks. Normally, it does perform both. But there's a menu that allows a selection of benchmarks. So you can do limit to 2D, DDraw. By the way, there are some more 2D benchmarks.. For GDI/WinG. WinSpeed https://www.vogons.org/viewtopic.php?p=509713#p509713 Tom2D …

Re: CGA Light Pen Showcase

Posted on 2021-03-27, 01:58

Good morning, everyone! 🙂 Can't we just make our own light pen? I imagine, at the heart, all we need is a card board tube/tunnel and a photodiode/phototransistor mounted inside. Or to be very oldschool, a selenium cell. ;) Edit: Just noticed there's also a little blackbox.. What's its purpose? Does …

Re: CP/M source code

Posted on 2021-03-23, 18:15

I just found a web site that legally shares the source code and lots of apps and documentation for CP/M, including stuff the predates Digital Research. I'll be making good use of it (mostly the x86 ports, but to a lesser extent also the Z80 code and apps). Thought some of you might find it useful. …

Re: CF vs DOM vs SSD

Posted on 2021-03-23, 14:45

Pretty sure that most CFs have native PATA controllers built into them. They do, which is why they are such good substitutes for spinning rust That doesn't mean they were designed to handle the large amount of concurrent random IO anything after DOS throws at them. I have found both CF and SD quite …

Re: VirtualBox doesn't work with my PC.

Posted on 2021-03-22, 18:40

in PC Emulation
No, if you had Intel CPUs back then, Intel deliberately did this to differentiate price segment. The Celeron and Pentium did not get VT, only the Core. It had nothing to do with BIOS. Later, even certain Core models won't have VT. In the post-Nehalem era, some "K" unlocked CPUs also did not have VT …

Re: VirtualBox doesn't work with my PC.

Posted on 2021-03-22, 06:51

in PC Emulation
CPU: Pentium Dual CPU E2200 @ 2.20GHz This is a 2007 CPU and indeed it does not support VT. Right, but age alone is not the main problem, it's the CPU/BIOS combo. Some CPUs do support intel vt or amd-v, but the BIOS gets in the way. Not seldomly, that totally confuses the VM software. In older …

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