Re: Cyrix 5x86 Register Enhancements Revealed

Posted on 2018-10-15, 07:27

by

by Rawit

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The set6x86 tool doesn't map things but only gives you the ability to read/write bits through the correct ports/to the correct addresses. MediaGXm seems to have some features of both the 5x86 and the 6x86, but both CTCHIP's 5x86 and 6x86 profiles don't map correctly. GXm and GX1 seem to be the same …

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Re: Soundware CD 45 GUS daughterboard attachment- comments / thouights please

Posted on 2018-10-14, 19:56

by

by Rawit

in Marvin \ Sound

in Marvin \ Sound

I don't know that much about PCB's and chips but this seems too simple for an audio recording add-on. It connects to the ISA bus through the GUS and has CD in it's name... Isn't this some kind of CD-ROM interface?

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Re: Computer won’t start when finally everything is together

Posted on 2018-10-14, 19:41

by

by Rawit

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

No beeps? PC speaker (correctly) connected? Does the system sound like it's operating normally? Check if: - The mainboard is not shorting (touching the metal case in some way); - Reset CMOS; - Are you able to test with another screen?

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Re: Cyrix 5x86 Register Enhancements Revealed

Posted on 2018-10-14, 19:33

by

by Rawit

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Recently I found another tool to set Cyrix registers with, I attached it here. Currently using it with my GX1 and with success. The GX1/MediaGXm has a different register layout so most tools don't work so well. Few things I've noticed so far: - FP_FAST seems to give the biggest increase in …

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Re: NS Geode GX1 / Cyrix MediaGM - Double sided memory required?

Posted on 2018-10-12, 11:16

by

by Rawit

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I attached a pic, it's a low res press release picture. Might be useful, will take a photo of the mainboard when I have time.

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Re: NS Geode GX1 / Cyrix MediaGM - Double sided memory required?

Posted on 2018-10-12, 08:08

by

by Rawit

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I've got a NS Geode GX1 - 233 soldered on an Advantech POS-7551 motherboard. There are some low res pics on the internet, will take a pic when I have time. Attached is the BIOS with flash tool from the CD it came with. It's the same version as is running on my board. You might be right about the …

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Re: NS Geode GX1 / Cyrix MediaGM - Double sided memory required?

Posted on 2018-10-12, 07:32

by

by Rawit

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I guess it's more period correct than I thought. Must be the BIOS date: 2002. Last night I used CTCHIP34 to enable/disable some other register bits; got Quake to run at 30.1fps and MDK with performance index 45. The tools to set register bits are confusing though, some list other options per …

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Re: Building a game console card host machine, looking for CD-I ISA board.

Posted on 2018-10-12, 07:17

by

by Rawit

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

There is an i2m pci card which according to the scarce info available does that same thing and might be easier to find. But it's PCI and it's not consumer oriented. And a system with PC-FX/GA and 3DO Blaster ISA boards? Totally rad!

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Re: NS Geode GX1 / Cyrix MediaGM - Double sided memory required?

Posted on 2018-10-06, 09:28

by

by Rawit

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I've also got a Gravis Ultrasound in this system and one of its utilities, Mega-Em, likes to have less than 64 MB of memory and NMI enabled for Roland emulation purposes. With NMI enabled it should work in protected mode games. Max. 1 GB sounds not realistic. Perhaps with conservative settings but …

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Re: NS Geode GX1 / Cyrix MediaGM - Double sided memory required?

Posted on 2018-10-06, 07:57

by

by Rawit

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yup, I followed that guide. I currently only use FP_FAST. Some settings already seem optimal according to CTChip34, but I need to properly research it so I can push it more. Do you know any tools that can set register set CCR7? I want to enable NMI. It's probably indeed the size of the stick, but I …

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Re: NS Geode GX1 / Cyrix MediaGM - Double sided memory required?

Posted on 2018-10-05, 20:58

by

by Rawit

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

So I tried some sticks of RAM, wanted to share my findings. First I tried a stick of RAM of 128 MB, PC133, CL2, useable memory density. Worked at CL2, but not with an divider of 3. Unstable, games crash or do funny things like upside down cars that fall through the road. Then I got my hands on a 32 …

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Re: Dungeon Keeper 95 Resolution Problem

Posted on 2018-10-05, 11:53

by

by Rawit

in Marvin \ Software

in Marvin \ Software

If I remember correctly, after the splash screen the intro video starts. It's low res video and perhaps will change the output resolution accordingly, so that would mean you will only get "out of range" when videos are playing. Pressing Escape or Enter (going to the menu) doesn't help?

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Re: Can anyone identify this sound card or soundfont?

Posted on 2018-10-02, 13:30

by

by Rawit

in Marvin \ Sound

in Marvin \ Sound

8MBGMSFX.sf2 is an official EMU font, came with some driver AFAIK. This is a variant, at least the similar name suggests so, that came also with some update/driver/installer. I'm unable to compare it right now, so I might be off completely with this: https://ufile.io/yys5u Edit: did you try all …

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Re: The great Pentium Pro haul of 2018

Posted on 2018-10-02, 08:13

by

by Rawit

in Milliways

in Milliways

This is awesome stuff. Gonna check this regularly. And it's great to read this will be preserved and not recycled.

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Re: Need help with my first GUS! A Gravis Ultrasound Classic 2.4

Posted on 2018-10-02, 07:54

by

by Rawit

in Marvin \ Sound

in Marvin \ Sound

*Is it picky about how modern\fast the host system is? In some systems it can be. From what I've read Quake is one game to test as it seems to reveal speed sensitivity issues with the GUS. But it also depends how well your machine will run Quake. Games that fully use the GUS like Epic Pinball and …

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Re: Where my memory is going ? Low conventional memory

Posted on 2018-09-26, 11:19

by

by Rawit

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

root42 wrote: Rawit wrote: BUFFERS=50 seems a bit high, but I'm not entirely sure the effect it has on memory. I think each buffer is one sector (512 Bytes), but I might be wrong. Looked it up, seems to be 512 + 16 bytes = 528 bytes.

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Re: Where my memory is going ? Low conventional memory

Posted on 2018-09-26, 10:56

by

by Rawit

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

BUFFERS=50 seems a bit high, but I'm not entirely sure the effect it has on memory.

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Re: Continuous random beeping when using EMM386.exe on dos 6.2

Posted on 2018-09-26, 08:19

by

by Rawit

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The easiest way is to go to the BIOS and disable the HALT on no keyboard error. After saving turn off your computer, disconnect the keyboard and boot again. While you're in the BIOS, check for anything related to A20. You might wanna do a memory test as well.

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Re: Checkmate 1500 Kickstarter

Posted on 2018-09-26, 07:53

by

by Rawit

in Milliways

in Milliways

Very tempting. Need to check if my Flex ATX board fits in it.

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Re: Continuous random beeping when using EMM386.exe on dos 6.2

Posted on 2018-09-26, 07:15

by

by Rawit

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

EMM386 switches the CPU to V86 mode, but I don't think that makes the CPU hotter, let alone overheat instantly at bootup after EMM386 loaded. Try running it with NOEMS NOVCPI and check if this makes a difference. Does it occur when you only use HIMEM? If the beeps are random might be the A20 …

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