First post, by demonized999
Hello guys!
Reading a magazine from 1990 i encountered a note which stroke me (cause I don't remember hearing about this one before) - apparently there was an 486 FPU bug found at some point in 1989 that forced the recall of some systems already assembled with it and even created delays for other vendors releasing their own 486 machines - specifically 486-25Mhz. The errata was discovered by Compaq and there were in fact two (!) bugs - first was able to be mitigated by workaround that Intel sent to vendors but the second one could be eliminated only by releasing a new revision of the chip.
It was said that after that point Intel changed the designation on the CPU from 486-25 to 486DX-25.
Anyone knows more about this? Anyone in possession of an affected processor? There is not much info about that I can find anywhere..
Starting to think that I found a "Mandela effect" 😁