Erik_
You might be right...
Wed Jan 12, 2022 12:11am
68.129.13.241

I was just thinking 4.77MHz because a lot of the games on the IBM PC/XT time weren't controlled by anything besides CPU speed so they ran at light speed once MHz started to increase. I thought turning turbo off tried to re-emulate that speed to make those programs work correctly again. I might just be confusing that with an old DOS utility that use to do the same thing.

    • I think they just turned the speed down, - Puckdropper, Tue Jan 11 2022 3:18am
      It wasn't until 286 and 386s that that kind of side-scroller game started to be common, I think. 4.77 just isn't a lot of horsepower, especially if you want color.
      • You might be right...- Erik_, Wed Jan 12 2022 12:11am
        • There was also a utility called mo_so or slow down or someth - Puckdropper, Wed Jan 12 2022 3:28pm
          Thing similar. I had to use it for a game that was running to fast, but I can't remember what it was. So some systems just slowed the CPU down by disabling caches or skipping cycles. Others really did try to hit 4.77 mHz. I wonder if Delivery Rush can be played on an XT if the graphics were simp... more
  • Click here to receive daily updates
    "Forces act when not restrained" - Puckdropper