Mike Chambers
Veteran Member
- Joined
- Sep 2, 2006
- Messages
- 2,621
is there a good and simple utility out there that i can run on an 8088 to verify the CPU speed? i'm trying to get the turbo 8 MHz mode working on a motherboard and i want to verify.
Elapsed time in second ... 17.25
Detected 8088 CPU at equivalent of ... 4.77 mhz
Effective clock speed is ... 3.37 mhz
Estimate MIPS at ... 0.16
Times faster than original 4.77 mhz PC ... 0.71
I don't suppose you have access to an oscilloscope? Nothing like testing hardware with hardware!
I guess there is something I don't get about this turbo thing. On 386/486 boards if you put the turbo jumper (or switch) on it goes slowly. What am I not understanding here? Were there some boards that actually had some serious overdrive? It seems to me that a (eg) 40Mhz board goes at 40Mhz and if you want to go faster by any significant amount you have to get a faster CPU. Your only realistic speed choice is to go slower. My understanding is that some unscrupulous manufactures put a switch (or jumper) on the clock and labeled it backwards so as to fool unsuspecting customers. Correct me if I am wrong.nige the hippy: I did once have a turbo clock jumper fall off a motherboard, the PC worked, but incredibly slowly
Thanks for the reality check Mike. That's how I understood it too, but I was beginning to wonder if there actually was such a thing as "turbo" - I don't think there is.One interpretation of the button for the 'turbo mode' is that it is not to make the machine to go faster, but to slow it down for compatibility purposes. Most people would normally run the machine at full speed, unless they were playing a game that was too fast.
I've got PC doctor that will run on my Philips NMS9100 (P3105) so should work on most other systems. It has a whole load of other functions too.
Anyone want it ?