Reply 200 of 202, by Falcosoft

User metadata
Rank Oldbie
Joseph_Joestar wrote on 2020-02-18, 07:06:

Anyone tried SetMul with a Duron on a SocketA system? I have an Abit KT7A and I'm thinking about downgrading my AthlonXP 1500+ to a Duron 700 in the hopes of getting more slowdown choices.

Currently, SetMul only allows me to disable the L1 cache on the AthlonXP which puts it at around 386 levels, and that's really awesome. However, I'd like something not quite as slow for mid-late 90s games like WarCraft 2 and Red Alert which have issues with overly fast screen scrolling.

Is it possible for SetMul to change the multiplier on the Duron and make it run at something like 200 MHz? For reference, the multiplier settings in my BIOS only go down to 5x.

1. There is no point in replacing your Athlon to Duron for more slowdown choices. Every SocketA desktop CPU has the same minimum multiplier(5x) and cache disabling option with your board . Only L1 cache disabling is possible (which also means disabled L2 cache) so a Duron and an Athlon with disabled L1 cache have the exact same speed. Even with caches enabled the difference is minimal at the possible minimum 500 MHz (5x100).

2. Setmul can only set K7 multipliers in real time with mobile K7 CPU (Athlon XP-M). You can make a desktop CPU a mobile one by modifying some bridges:
https://web.archive.org/web/20170912115837/ht … tiplier_FAQ.htm
The above modifications can work with your Athlon XP but definitely not with your Duron 700. The processor must have some MSR registers for this to work and only Morgan+ Durons have them. Your Duron 700 is a Spitfire without PowerNow! MSR registers.
But unfortunately on KT7-A it's not enough since it's a desktop and not a mobile board. You also have to manually tune your chipset for Setmul to be able to set multipliers on the fly:
https://web.archive.org/web/20170822100906/ht … html/Tweaks.htm

Website, Facebook, Youtube
Falcosoft Midi Player + Munt VSTi + BassMidi VSTi topic

Reply 202 of 202, by SaxxonPike

User metadata
Rank Member

Thank you so much for this utility!

I just grabbed v1.24 to test with an Athlon XP-M 3000+. I have it installed in a KT133A board, the Soltek SL75-KAV. The processor works great and is stable in this board. Crystal can set the multiplier in Windows without issues all the way up to the processor's reported maximum, 16.5x. The startup multiplier and FSB frequency are configured via jumpers on the motherboard. Voltage is configured via a BIOS setting.

SetMul shows all the current settings correctly. Disabling or enabling the L1 cache with SetMul seems to work fine. However, when I attempt to use SetMul to change the multiplier to anything else, it hangs at "Setting K7 PowerNow..", regardless which drivers or TSRs I boot with.

Here's a captured screen from the machine:

File size
56.58 KiB
File license
Public domain

Anything I should try, or additional info you will need to diagnose this one?

Sound device guides:
Sound Blaster