Re: Making my first ISA card, as pain-free as possible

Posted on Today, 18:08

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by bakemono

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Maybe I'm overthinking this. 16-bit DMA on the PC/AT maxes out at 1.6 MiB/s, and with the 64 KiB (or is it 128 KiB in 16-bit mode?) size limit per transfer, even one second's worth of data can be DMA'd in one go, taking only ~2.4% of the available time. DMA looks easier to implement, and if it …

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Re: How to know if a video card is 64bit or 128bit?

Posted on 2021-01-23, 18:04

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by bakemono

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

If you want to play DirectX8 games then you might better steer clear of GeForce 4 MX anyway because it doesn't support DX8 shaders.

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GOG's Master of Magic on real DOS

Posted on 2021-01-16, 22:53

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by bakemono

in Marvin \ Software

in Marvin \ Software

Anybody get this working? I'm booting Win95/MS-DOS7 and I have EMS, UMB, and 610K free (624,416 bytes) but it still craps out at the title screen with the message that it needs at least 583KB. Maybe the modified version of MoM needs more memory than the original game??

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Re: Many Socket 775 Benchmarks (including the CPUs no one cares about anymore)

Posted on 2021-01-15, 10:35

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by bakemono

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I think something must've gone wrong in the FEAR test .. No way a Cel E3400 should outrun a C2D E8200 in _any_ situation? Something clearly out of whack there, and the E6750 result for Crysis also looks like it had a hiccup. What's up with the PDC 805 Cinebench score though? It's a true dual-core …

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Re: Strange Problem: Unable to install Windows 2000 on P2B-F/Celeron533 System.

Posted on 2021-01-08, 02:59

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by bakemono

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Is the error from attempting to read a file or to write one? Does the BIOS properly support an 80GB disk? Does the HDD have bad sectors? Never heard about any problem with partition size under Win2k until you go beyond 128GB. At least not for service pack 3 and later. It's true that it will run fine …

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Re: What retro activity did you get up to today?

Posted on 2020-12-24, 01:06

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by bakemono

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Tried to use CPU northbridge throttling on an Athlon II X2. On dual power plane boards the NB voltage can remain fixed (ie. 1.175V) while the CPU voltage can potentially go much lower than that when throttling. On single plane boards they are tied together, and if you lower the voltage too much (for …

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Re: Can't seem to make heads or tails on a proper processor upgrade for abit Fatal1ty AN9 32X AM2

Posted on 2020-12-01, 03:22

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by bakemono

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I am currently stuck on whats the best processor for the abit Fatal1ty AN9 32X AM2 motherboard. It says (BIOS: m601b19.zip) ID:19 Update CPU Micro code to support Athlon 4X50 series and Sempron X2 CPU. http://abit.ws/page/en/motherboard/motherboard_detail.php@pMODEL_NAME=Fatal1ty+AN9+32X&fMTYPE= …

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Re: Possible to mount a hard drive to an empty folder in NT 3.51 / NT 4

Posted on 2020-11-22, 23:47

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by bakemono

in Marvin \ Software

in Marvin \ Software

How about the JOIN command?

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

Posted on 2020-11-11, 17:37

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by bakemono

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Less transistors following any semblance of proper design technique always allows for more clock speed PERIOD In terms of a complete CPU design, you also have to take pipelining into account. A longer pipeline adds complexity to the chip but allows higher clock speeds because operations can be …

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Re: Can anybody with AC'97 audio please help me test a DOS player? 😊

Posted on 2020-11-03, 10:40

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by bakemono

in Marvin \ Sound

in Marvin \ Sound

I tried it on ICH4M - vendor 8086 device 24C5 rev03 (known to Windows as Analog Devices SoundMAX) player /v pfm.wav The file was 44KHz, 16-bit, mono. It played at double speed.

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Re: In an SMP system how does DOS/98 choose the CPU to utilise?

Posted on 2020-10-16, 20:00

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by bakemono

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

After pondering CPUs running at different speeds I am concerned about the QPC . It's possible the TSC get's used for the QPC and suspect the two sockets having different TSCs may cause issues, then again keeping the two TSCs I phase may also be an issue. I also recall XP and 2003 using different …

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performance benefit of dual-channel memory (or not)

Posted on 2020-10-11, 23:05

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by bakemono

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I always assumed that running a matched pair of DIMMs for the dual-channel support would be faster. But I never investigated it until now. Since I got another pair of DIMMs and one of them turned out to be defective, I decided to run a few benchmarks. The result is essentially no difference, on this …

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Re: Drivers doing stuff on their own and other horror stories

Posted on 2020-09-13, 00:49

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by bakemono

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I had a similar experience with an ESS driver, called Maestro or something like that. It was on a Toshiba laptop with Win98. There was a file in CONFIG.SYS or AUTOEXEC.BAT that did who-knows-what, it didn't seem to be necessary either in DOS or Windows. I commented it out, and then it reappeared! I …

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Re: How to make NEC V20HL run at 16 MHz?

Posted on 2020-09-09, 05:22

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by bakemono

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

In the 1987 NEC microcomputer products catalog they list a uPD71011 clock generator for use with V20/V30 CPUs. However it outputs a clock with 50% duty cycle. Looking at the timing specs for the V20 itself, the allowed range for the clock duty cycle is 41% to 51% which is different than an 8088! …

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Re: Regarding SMARTDRV and 16mbs of ram...

Posted on 2020-09-09, 04:24

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by bakemono

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

You can tell SMARTDRV how much RAM to use. When you have 16MB then it will use 2MB by default, but you could drop to 1MB by doing SMARTDRV 1024 Or you could just leave it out of AUTOEXEC.BAT, and only run it manually when you need it. When I used to install Win 3.x or Win 9x on a system with plenty …

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Re: Sound card for Windows NT 3.51

Posted on 2020-08-20, 05:14

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by bakemono

in Marvin \ Sound

in Marvin \ Sound

Did you find NT 3.51 drivers for those cards and try to install them? Or you have no driver at all? I got PCM sound working on Realtek AC'97 by manually installing a driver for NT4 into NT 3.51, but this is integrated sound on an i855 board, not a PCI card.

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Re: Mode Q timings

Posted on 2020-08-06, 19:47

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by bakemono

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Most emulators back then (eg. NESticle) had 256x modes that used the same pixel clock as standard VGA and just had fat borders on the left and right. But there were one or two (Magic Engine?) which somehow configured a full screen 256x240 which was cool but didn't work on every system even with a …

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Re: Windows 3.11 + PCMCIA ethernet?

Posted on 2020-07-22, 07:30

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by bakemono

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I know I had a batch file that executed DOSENAB, which would detect the card, and then it would execute NET START, and then start Windows. Can't remember if there was more to it than that.

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Re: Nforce 2, change CPU Multipler in Windows XP

Posted on 2020-06-11, 19:56

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by bakemono

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

CrystalCPUID works for changing K7 (mobile) multipliers

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Re: The World's Fastest 486

Posted on 2019-12-26, 13:07

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by bakemono

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Does the MediaGX have a larger cache line size to go along with the 64-bit memory bus or does it maintain a 16-byte line size and shorten the burst length to 2x 64-bit words? Maybe that explains the lackluster memory performance of the MediaGX (that, and the bandwidth-stealing video)

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