Re: TI-H: Fixing Grant's friend's PC
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Re: TI-H: Fixing Grant's friend's PC
>Maybe I'm just WAY out of the loop... since when is a 486 brand new? We're 2 1/2
>generations beyond that already, at least (Pentium, MMX, P][).
>As for 72 pin SIMMs, yeah, PC's have used them for a while, but we used 36-bit
>memory back then. Macs used 32-bit, and recently, and ONLY recently, did PCs head
>in that direction. Those 4 extra bits, for those of you on the list who don't
>know and DO care, were parity bits, one for each byte.
>Any challengers, I'd like some solid evidence, because all of my sources claim
>that parity checking only started to die out around the time of the second
>generation Pentiums. If I'm wrong, I'd like to know.
Parity was phased out at the start of the introduction of EDO dram,
which was during the latter half of the pentium rein (e.g.
P133's/P166's). Now you can't even BUY parity sdram or edo dram chips
from the manufacturer's. They're all 1Mx16, 2Mx16, or 8Mx16 (64
megabit, which is the largest).
-Mel
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