VOGONS


PC Chips 286 M216 Motherboard

Topic actions

Reply 40 of 49, by megatron-uk

User metadata
Rank Oldbie
Rank
Oldbie
maxtherabbit wrote on 2021-06-12, 02:43:
rmay635703 wrote on 2021-06-12, 02:07:

I can clearly show you many period advertisements advertising 0 wait states
45-56ns system memory in their mid-range to upper range offerings with all sorts of cpus.

Can you, please? Because I certainly have seen them for up to 20MHz processor clocks, but not beyond

Neither have I. Nor have I seen any evidence that 50ns or faster 30pin SIMMs were ever available commercially. There may have been hand picked modules for bespoke systems but not that you or I could walk into a store or buy mail-order.

My collection database and technical wiki:
https://www.target-earth.net

Reply 41 of 49, by rmay635703

User metadata
Rank Oldbie
Rank
Oldbie
megatron-uk wrote on 2021-06-12, 07:56:
maxtherabbit wrote on 2021-06-12, 02:43:
rmay635703 wrote on 2021-06-12, 02:07:

I can clearly show you many period advertisements advertising 0 wait states
45-56ns system memory in their mid-range to upper range offerings with all sorts of cpus.

Can you, please? Because I certainly have seen them for up to 20MHz processor clocks, but not beyond

Neither have I. Nor have I seen any evidence that 50ns or faster 30pin SIMMs were ever available commercially. There may have been hand picked modules for bespoke systems but not that you or I could walk into a store or buy mail-order.

I don’t want to waste too much time but looking at the first 1991 magazine scan looky what I’ve found

7C660FD5-756E-4F27-AC55-09AC223DABDB.jpeg
Filename
7C660FD5-756E-4F27-AC55-09AC223DABDB.jpeg
File size
101.31 KiB
Views
185 views
File license
Fair use/fair dealing exception

Reply 43 of 49, by rmay635703

User metadata
Rank Oldbie
Rank
Oldbie
maxtherabbit wrote on 2021-06-13, 00:37:

Yet it's only 20MHz...

And 53ns

The Computer Shopper always listed 50ns ram at astronomical prices as well

So yes it existed in the day but as stated 1991 hit 50ns was invented and after that literally no one cared about zero wait states or memory speeds

Reply 44 of 49, by pentiumspeed

User metadata
Rank Oldbie
Rank
Oldbie

I remember this ad too, only ran for 2 or 3 months, the 53ns stands out in my mind but ad was in color showing the ram sticks too.

Cheers,

Great Northern aka Canada.

Reply 46 of 49, by Anonymous Coward

User metadata
Rank l33t
Rank
l33t

I guess if you ever bought one of those ZEOS 386SX-20s with 0WS memory, you'd be pretty much screwed if you wanted to add more RAM. You could either get ripped off by the dealer, or you could buy regular 60ns stuff and add a WS, killing your performance.

Last edited by Anonymous Coward on 2021-12-30, 00:35. Edited 1 time in total.

"Will the highways on the internets become more few?" -Gee Dubya
V'Ger XT|Upgraded AT|Ultimate 386|Super VL/EISA 486|SMP VL/EISA Pentium

Reply 47 of 49, by rmay635703

User metadata
Rank Oldbie
Rank
Oldbie
Anonymous Coward wrote on 2021-12-29, 08:07:

I guess if you ever bought one of those ZEOS 386SX-20s with 0WS memory, you'd be pretty much screwed if you wanted to add more RAM. You could either get ripped off by the deal, or you could buy regular 60ns stuff and add a WS, killing your performance.

Or you could not know better and overclock ram and get one of 3 scenarios
1. Can’t clear post
2. Unstable
3. Luck out

Back in those days the OEM would always tell you that only their aftermarket parts would work in their box.

Reply 48 of 49, by BitWrangler

User metadata
Rank l33t
Rank
l33t

I think I lucked out with a set of 4 1MB 30 pin 60 nanosecond SIMMs I got hold of mid 90s when I was still a bit green. Since I recall setting 0ws on a 486sx33 board at the time and then being puzzled by why I couldn't set 0ws on anything else after. They were DIL chips, but the entire module was very low profile. For some reason they were the cheapest set of 4x1 I could pick up at the time I needed them. I only regarded them as "ordinary" 1MBs at the time though so they didn't get specially saved and I don't know where they ended up.

Unicorn herding operations are proceeding, but all the totes of hens teeth and barrels of rocking horse poop give them plenty of hiding spots.