Re: CpuSpd - A Hardware Based CPU Speed Control Utility for DOS/Win98 Retro Gaming

Posted on 2020-06-09, 13:50

by

by kalohimal

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

MAZter wrote on 2020-06-09, 13:43: Interesting, but never heard about "Prince of Pursia". Haha, thanks for pointing out the typo, just noticed it. Sorry English is not my mother tongue.

---

Re: CpuSpd - A Hardware Based CPU Speed Control Utility for DOS/Win98 Retro Gaming

Posted on 2020-06-09, 13:07

by

by kalohimal

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Version 1.2 released. Resolved ACPI detecting issue when ACPI table is located within 1MB DOS memory. Added DOS version check under NT. Please download from first post. Thanks to enaiel for reporting the problem.

---

Re: My P3 Retro DOS PC

Posted on 2020-06-09, 12:53

by

by kalohimal

in Marvin \ System Specs

in Marvin \ System Specs

Yes, that's because similar to Throttle, Cpuspd controls the south bridge to throttle the CPU frequency. The differences are Cpuspd looks up the throttle control port via ACPI which is available on all modern motherboards, and can run in VCPI/protected mode (EMM386/Win9x). Since throttling is done …

---

Re: My P3 Retro DOS PC

Posted on 2020-06-09, 04:39

by

by kalohimal

in Marvin \ System Specs

in Marvin \ System Specs

Please try this version, problem should be fixed now. Filename CPUSPD1.2 beta.zip File size 76.61 KiB Downloads 79 downloads

---

Re: My P3 Retro DOS PC

Posted on 2020-06-09, 02:40

by

by kalohimal

in Marvin \ System Specs

in Marvin \ System Specs

Thanks for the help! I think we found the problem. Usually when the PC boots up it's BIOS will construct the ACPI tables near to the top of RAM. This is usually beyond the conventional 1MB DOS memory (e.g. if you have 512MB of RAM, the ACPI tables should be constructed near the end of 512MB). For …

---

Re: CpuSpd - A Hardware Based CPU Speed Control Utility for DOS/Win98 Retro Gaming

Posted on 2020-06-09, 02:01

by

by kalohimal

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Does it support more subtle tweaking on Pentium MMX and Cyrix like Setmul? No it doesn't. The program is aimed to expand on Setmul while not duplicating the functions it already has, since Setmul is already doing an excellent job. For subtle controlling of branch prediction/pipelines/etc, and for …

---

Re: My P3 Retro DOS PC

Posted on 2020-06-09, 01:14

by

by kalohimal

in Marvin \ System Specs

in Marvin \ System Specs

Thanks enaiel. RSDT with a value of 1 means that: 1. It had searched the BIOS area for the pointer to ACPI tables but couldn't find it. Possibly because ACPI is not enabled? 2. It found the ACPI table pointer, but could not map the memory. Perhaps because other protected mode programs/TSRs are …

---

Re: CpuSpd - A Hardware Based CPU Speed Control Utility for DOS/Win98 Retro Gaming

Posted on 2020-06-09, 00:37

by

by kalohimal

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

undeon wrote on 2020-06-08, 20:13: Nice project... I'll keep an eye on it, because I'm building a fast WinME project... Thanks, but I'm not sure how it would work in WinME though, as it's written for DOS/Win9x and never tested on ME. Please let me know if you encounter any problems, cheers.

---

Re: My P3 Retro DOS PC

Posted on 2020-06-08, 17:51

by

by kalohimal

in Marvin \ System Specs

in Marvin \ System Specs

Ok, could you issue this command and let me know the results please: cpuspd d t

---

Re: My P3 Retro DOS PC

Posted on 2020-06-08, 17:31

by

by kalohimal

in Marvin \ System Specs

in Marvin \ System Specs

Hmm that's strange. Are you using cpuspd version 1.1? The old version has a bug in acpi detection.

---

Re: My P3 Retro DOS PC

Posted on 2020-06-08, 16:25

by

by kalohimal

in Marvin \ System Specs

in Marvin \ System Specs

CPUSPD M and CPUSPD T won't work for your PC because Pentium 3 is multiplier locked. Intel locked the multiplier starting from Pentium 2 all the way to Pentium 4. Then they introduced "SpeedStep" starting from P4 630 cedar mill, which is essentially unlocking the multiplier if it is lowered, but …

---

Re: My P3 Retro DOS PC

Posted on 2020-06-08, 05:40

by

by kalohimal

in Marvin \ System Specs

in Marvin \ System Specs

Sure no problem. Here's the entire modded drivers pack.

---

Re: My P3 Retro DOS PC

Posted on 2020-06-08, 01:36

by

by kalohimal

in Marvin \ System Specs

in Marvin \ System Specs

Thank you very much, I'll check them out later.

---

Re: My Socket-939 All-in-One DOS/Win98/XP Gaming PC

Posted on 2020-06-07, 15:05

by

by kalohimal

in Marvin \ System Specs

in Marvin \ System Specs

Running some of my favorite DOS games:

---

Re: My Socket-939 All-in-One DOS/Win98/XP Gaming PC

Posted on 2020-06-07, 15:03

by

by kalohimal

in Marvin \ System Specs

in Marvin \ System Specs

XP & Win 98 screenshots, and DOS boot up and slowdown for DOS games:

---

My Socket-939 All-in-One DOS/Win98/XP Gaming PC

Posted on 2020-06-07, 14:57

by

by kalohimal

in Marvin \ System Specs

in Marvin \ System Specs

Built this rig about a year ago during my search for an all-in-one gaming PC, that can play XP/Win98 and most of my favorite DOS games. In the process I selected a few more exotic components just for the fun of it. Specs: - CPU: AMD Dual Core Opteron 180 @2.4GHz (approx equiv to Athlon64 x2 4800+) …

---

Re: My P3 Retro DOS PC

Posted on 2020-06-07, 05:44

by

by kalohimal

in Marvin \ System Specs

in Marvin \ System Specs

That's interesting. I did the reverse, by using a scan converter to convert video outputs from Atari, Amiga and Apple computers to VGA. Btw, do you have any good MODs to recommend? Children.mod is pretty good, I tried other top rated MODs on MOD archive but find that they are overrated.

---

Re: AW744L II - YMF744 - AOpen Cobra Sound Card - Install SB-Link Header

Posted on 2020-06-07, 01:58

by

by kalohimal

in Marvin \ Sound

in Marvin \ Sound

hi i am trying to use a website to select some resistors to buy for modding a spare aw744l fromt this website: https://au.mouser.com/Passive-Components/Resistors/SMD-Resistors-Chip-Resistors/_/N-7h7yu?keyword=10K-OHM&No=275 now i can see a loooooot of 10k ohm resistors and the options to narrow it …

---

Re: Compact Flash Card Help (sorry, I've looked and looked)

Posted on 2020-06-07, 01:26

by

by kalohimal

in DOS

in DOS

I find GDISK a lot better than the DOS FDISK for managing partitions in DOS. Not as buggy as FDISK, works a lot faster, and more flexible.

---

Re: My P3 Retro DOS PC

Posted on 2020-06-07, 00:04

by

by kalohimal

in Marvin \ System Specs

in Marvin \ System Specs

CPUSPD uses the same principle as the original Throttle by Jeff Leyda , in that it uses the south bridge of the PC to slow down the clock frequency supplied to the CPU, but in addition CPUSPD also allows you to control the CPU cache and also the multiplier. Furthermore, the original Throttle relies …

---