I own a very similar board which I believe is a clone. When I insert the 256KiB coast module it'll merge with the onboard cache, unlike boards like A-Trend ATC-1020 which have a jumper to completely disable the onboard cache.

dominusprog wrote on 2024-04-12, 14:34:

I own a very similar board which I believe is a clone. When I insert the 256KiB coast module it'll merge with the onboard cache, unlike boards like A-Trend ATC-1020 which have a jumper to completely disable the onboard cache.

COAST modules aren't interchangeable. I have a few and I'd like to know which one goes in to avoid nuking anything 😀
The board is really a bummer due to the lack of L2.
Like many others, I complain they didn't at least put real vias for L2.

From the pics on TRW, it has 2x7ns chips + 1x15ns tag.

I have one of those - I found an AT tower in a dumpster in 2019, and that's what it had inside. My plan is to get around to ordering and assembling a Necroware voltage regulator and have it set up with a K6-3+. Here are images of the 256k cache module it came with.

Repo Man11 wrote on 2024-04-12, 17:50:

I have one of those - I found an AT tower in a dumpster in 2019, and that's what it had inside. My plan is to get around to ordering and assembling a Necroware voltage regulator and have it set up with a K6-3+. Here are images of the 256k cache module it came with.

Necrware's VRM is something I'd like to have. Like 5 pieces should be a lifetime supply.
Add his Dallas RTC replacement and it's done.

Coasts aren't all the same. I know there are at least 4 different pinouts for the same stuff. 🙁

Honestly I was thinking what I could use this board for. Fake cache, and some leads aren't even soldered 😀
Btw, I was offered 2 of these "as is", for 30€. Politely declined. Missing components even...

Nexxen wrote on 2024-04-12, 19:10:

Necrware's VRM is something I'd like to have. Like 5 pieces should be a lifetime supply. Add his Dallas RTC replacement and it's […]
Show full quote

Repo Man11 wrote on 2024-04-12, 17:50:

I have one of those - I found an AT tower in a dumpster in 2019, and that's what it had inside. My plan is to get around to ordering and assembling a Necroware voltage regulator and have it set up with a K6-3+. Here are images of the 256k cache module it came with.

Necrware's VRM is something I'd like to have. Like 5 pieces should be a lifetime supply.
Add his Dallas RTC replacement and it's done.

Coasts aren't all the same. I know there are at least 4 different pinouts for the same stuff. 🙁

Honestly I was thinking what I could use this board for. Fake cache, and some leads aren't even soldered 😀
Btw, I was offered 2 of these "as is", for 30€. Politely declined. Missing components even...

I really like the idea of taking this board that came with a 133 MHz CPU and upgrading it to a 400 MHz CPU with L2 cache. At least this one had a cache module - the M520 computer I bought had fake cache chips and no COAST module! It came with a K5 PR133 (100 MHz) and a very slow hard drive. It appears to have been upgraded from a 486, though a 100 MHz K5 on a VX chipset with no cache might not have been that big of an upgrade from a 486 system.

BTW, that COAST module from the M507 wouldn't work on the M520.

Repo Man11 wrote on 2024-04-12, 19:30:

Nexxen wrote on 2024-04-12, 19:10:

Necrware's VRM is something I'd like to have. Like 5 pieces should be a lifetime supply. Add his Dallas RTC replacement and it's […]
Show full quote

Repo Man11 wrote on 2024-04-12, 17:50:

I have one of those - I found an AT tower in a dumpster in 2019, and that's what it had inside. My plan is to get around to ordering and assembling a Necroware voltage regulator and have it set up with a K6-3+. Here are images of the 256k cache module it came with.

Necrware's VRM is something I'd like to have. Like 5 pieces should be a lifetime supply.
Add his Dallas RTC replacement and it's done.

Coasts aren't all the same. I know there are at least 4 different pinouts for the same stuff. 🙁

Honestly I was thinking what I could use this board for. Fake cache, and some leads aren't even soldered 😀
Btw, I was offered 2 of these "as is", for 30€. Politely declined. Missing components even...

I really like the idea of taking this board that came with a 133 MHz CPU and upgrading it to a 400 MHz CPU with L2 cache. At least this one had a cache module - the M520 computer I bought had fake cache chips and no COAST module! It came with a K5 PR133 (100 MHz) and a very slow hard drive. It appears to have been upgraded from a 486, though a 100 MHz K5 on a VX chipset with no cache might not have been that big of an upgrade from a 486 system.

Yes, an absolute waste. Probably a COAST was purchased along making $$ go up. My guess.
I've seen VRM and upgrades to K6-3. Hoping there is the patched bios on TRW.

I like these tinkerings 😀 Post something if you succeed.

Nexxen wrote on 2024-04-12, 15:21:

COAST modules aren't interchangeable. I have a few and I'd like to know which one goes in to avoid nuking anything :) The board […]
Show full quote

dominusprog wrote on 2024-04-12, 14:34:

I own a very similar board which I believe is a clone. When I insert the 256KiB coast module it'll merge with the onboard cache, unlike boards like A-Trend ATC-1020 which have a jumper to completely disable the onboard cache.

COAST modules aren't interchangeable. I have a few and I'd like to know which one goes in to avoid nuking anything 😀
The board is really a bummer due to the lack of L2.
Like many others, I complain they didn't at least put real vias for L2.

From the pics on TRW, it has 2x7ns chips + 1x15ns tag.

Are you sure? I've tried three different 256KiB modules on my YKM P5510VX and all of them worked.

https://theretroweb.com/motherboards/s/ykm-p5510vx