3 ms·
My first PC was a 486DX/50 and until today I was totally unaware of the potential bus timing issues but I can not remember ever having had issues. But this migh
by danbruc 4y ago
My first PC was a 486DX/50 and until today I was totally unaware of the potential bus timing issues but I can not remember ever having had issues. But this might finally explain why it came with a turbo button - even though it should probably be called an anti-turbo button - that allowed changing the clock to 10 MHz. But now I wonder why they would have made it that slow instead of say 25 MHz or 33 MHz? I vaguely remember using the slower clock to make games playable that were running way to fast, so maybe that also factored into it.
- elzbardico 4y agoIf I am recalling correctly the turbo button was a workaround for software that had problems running at the high speeds. But I may be mistaken.
- Koshkin 4y agoYou remember correctly. (Remarkably, GORILLA.BAS did not have that problem.)
- AdrianB1 4y agoThe Turbo button did exist on processors that ran over 4.77 MHz of the original 8086. I had a Turbo button on the 9.54 MHz 8088, also on the 386 DX/40 (lowering the frequency to 8 MHz IIRC), it was not specific to 486. Actually the 486 was the last CPU that had that button, I think.