Hi guys,

I accidentally stumbled upon this page and it awoke my, what I thought would be long time dead passion to socket 370 platform. That resulted in spending some $$$ on ebay and ordering:
Asus TUSL2-C motherboard
1.4 GHZ Tualatin Pentium III-S CPU
512 PC133 SDRAM (although if I remember correctly the board does not take it in one stick and you need 2*256mB)
Radeon 9800 PRO 256MB GPU

Since I am based in Europe and most parts are coming from US & China this is gonna take a while. Now I just need some PSU and a cooler to start this build but the goal is to play around with some overclocking like I used to do when I was a kid with the exact same platform 😀

bearking wrote on 2023-05-13, 14:52:

Found this kit today at the flea market 20230513_095812.jpg […]
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Found this kit today at the flea market
20230513_095812.jpg

Asus P/I-P55T2P4 rev 3.0, P233 MMX + cooler, 2x32 MB EDO RAM, 512 KB cache module and an S3 Trio64 DX PCI.

Everything works just great except the S3, so I'm pretty happy 😀

That is a great find, COAST module and everything! Too bad those boards didn't use a CR2032 tho.

Dmetsys wrote on 2023-05-13, 04:36:

Don't mix EDO memory with SDRAM memory. You could end up sending 5V to the SDRAM modules and may kill them inadvertently. Super Socket 7 is the exception, but on Intel chipset motherboards it's not advisable to do so. You may also end up with timing problems between the two if the motherboard can't slow down the SDRAM modules to match the EDO modules.

By the mobo manual it supports mixing DIMMs and SIMMs, and even supports up to 384MB by adding 2x64 SIMMs and 2x128 DIMMs. Though I think you're saying that just because it works doesn't mean it's safe or desirable. Or even that worthwhile as 2x128 DIMMs is more than enough - I just find it weird and part of this mobo's character. 😊

Doornkaat mentioned I could get something up to 533MHz with a slocket, but I'm not sure how as this mobo is strictly 66MHz FSB and only lists jumper settings up to 5x multiplier. 🤔

ubiq wrote on 2023-05-13, 20:37:

Dmetsys wrote on 2023-05-13, 04:36:

Don't mix EDO memory with SDRAM memory. You could end up sending 5V to the SDRAM modules and may kill them inadvertently. Super Socket 7 is the exception, but on Intel chipset motherboards it's not advisable to do so. You may also end up with timing problems between the two if the motherboard can't slow down the SDRAM modules to match the EDO modules.

By the mobo manual it supports mixing DIMMs and SIMMs, and even supports up to 384MB by adding 2x64 SIMMs and 2x128 DIMMs. Though I think you're saying that just because it works doesn't mean it's safe or desirable. Or even that worthwhile as 2x128 DIMMs is more than enough - I just find it weird and part of this mobo's character. 😊

Doornkaat mentioned I could get something up to 533MHz with a slocket, but I'm not sure how as this mobo is strictly 66MHz FSB and only lists jumper settings up to 5x multiplier. 🤔

If BIOS upgrades support later CPUs (and even without on some boards), the jumpers can be ignored by those later CPUs or setting 1.0x or 2.0x, or whatever, can become 6.0x, for example. The Asus P2L97, for example, also goes up to 5.0x on the multiplier jumpers, but it can support all Mendocino Celerons up to 533MHz. Even a Katmai Pentium up to 550MHz (albeit, downclocked) works (the 600MHz wouldn't work, but it's probably a voltage thing).

Take a look at BIOS updates for your board and/or try it out (for science), anyway. You may be pleasantly surprised.

Meatball wrote on 2023-05-13, 21:48:

If BIOS upgrades support later CPUs (and even without on some boards), the jumpers can be ignored by those later CPUs or setting 1.0x or 2.0x, or whatever, can become 6.0x, for example. The Asus P2L97, for example, also goes up to 5.0x on the multiplier jumpers, but it can support all Mendocino Celerons up to 533MHz. Even a Katmai Pentium up to 550MHz (albeit, downclocked) works (the 600MHz wouldn't work, but it's probably a voltage thing).

Take a look at BIOS updates for your board and/or try it out (for science), anyway. You may be pleasantly surprised.

Hmm, I don't have much kicking around to try out, but I tried a 500MHz Katmai and it runs that fine at 333MHz regardless of jumpers. Also tried 750MHz and 1000MHz Coppermines on a slocket and it runs both of those at 500MHz, heh.

Results: not sure. Might be worth trying to source a better Mendocino but I think that's it.

ubiq wrote on 2023-05-13, 20:37:

Doornkaat mentioned I could get something up to 533MHz with a slocket, but I'm not sure how as this mobo is strictly 66MHz FSB and only lists jumper settings up to 5x multiplier. 🤔

Those Mendocino Celerons have a fixed multiplier. Multiplier jumpers are irrelevant with them.😎👍

Doornkaat wrote on 2023-05-14, 03:49:

ubiq wrote on 2023-05-13, 20:37:

Doornkaat mentioned I could get something up to 533MHz with a slocket, but I'm not sure how as this mobo is strictly 66MHz FSB and only lists jumper settings up to 5x multiplier. 🤔

Those Mendocino Celerons have a fixed multiplier. Multiplier jumpers are irrelevant with them.😎👍

Schweet, thanks!

Got my first 486

ciornyi wrote on 2023-05-14, 05:51:

Got my first 486

Nice!😃👍 Even though that battery still looks good I recommend you remove it right away. It'll leak eventually, especially when it gets charged when you power up the board.

Pentium III 1000/100MHz, a Slocket, and a Vortex 2.

Thrift store purchase for 8 $US. Appears to be complete and unused.

Meatball wrote on 2023-05-14, 14:48:

Pentium III 1000/100MHz, a Slocket, and a Vortex 2.

sounds like a great combo for a fast 440BX rig 😀

Recently I didn't buy all that many hardware, but today I got this.

The fastest Mendocino. Probably the furthest thing from special, but I always wanted one. I'm also planning a budget build around it.

Not really retro but a nice surprise. I bought an Asrock 990fx Extreme 6 that came with a mystery CPU. The images were fuzzy and all I could make out was an FX stamped on the lid. The description read, "... with Phenom II Black Edition Hexacore CPU." And also something like, "Be ready for any task with this 8-core CPU." Hmm. I figured it was probably an FX-6300 or something similar and since the price was good for the motherboard alone I took the plunge. A few weeks later, I opened the box and to my surprise it was an Fx-9590. Very nice!

RandomStranger wrote on 2023-05-15, 16:13:

Recently I didn't buy all that many hardware, but today I got this.
IMG_20230515_175406.jpg
The fastest Mendocino. Probably the furthest thing from special, but I always wanted one. I'm also planning a budget build around it.

Instantly reminds me of the BP6.
You had either two of these or 2x 366 @ 550. Nice.

I want you guys to see this. Look at it. They SPRAY FOAMED the inside of the package.

It sure didn’t work to protect the drive covers, as you can see.

Damn shame. Did they toss it out of a plane when they flew over the distribution center?

Fortunately though, this 5150 is absolutely loaded, which makes up for the bad shipping.

It’s an early model (16-64K mb) with an 8088, 8087, original IBM EGA, AST RAMPage and SixPakPlus, Hayes modem, and some generic MFM controller.

ST-251 hard drive almost certainly dead from shipping, but we’ll see.

Power supply upgraded to 135 watt unit.

That MFM controller is JE1044 listed here: https://worldradiohistory.com/hd2/IDX-Consume … R-Page-0109.pdf

Fascinating. Did not know Jameco ever made this type of stuff. Apparently it only supports 360K floppy drives. Wonder how they got that 3.5 inch drive working.

"AMI BIOS ROM Included" is a bullet point feature. Did companies ever sell fully assembled IBM PC/XT clones without a BIOS?