386SX-25 With Cache Swap to 486SXLC2-40!

Today we are FINALLY swapping the 386SX-25 processor out for a 486SXLC2-40. This will give us a rare look at an SX platform with L1 and L2 cache!
Apologies for the hastily edited video. Workshop will be cleaned up and stop irritating me soon!
The winner of the giveaway will be contacted soon!
00:00 Intro
01:32 Desoldering the SX and SXLC
05:31 Soldering the SXLC in place
06:06 First Boot
08:26 FLUSH mod and kinks worked out
11:26 Back to 50MHz and Benchmark
14:38 Outro

[@atheatos]

WOW, ok way more than expected. Well done :)

[@markae0]

Awesome hand soldering of the the 486 to the 386 location./ removing the 386, without bridging any of the contacts.

[@DKJones96]

Thanks! I think leaving out the solder paste that I was tempted to use for applying it to the motherboard is what helped. Just throw on more flux!

[@user-mi2ri2ip2h]

Thanks you!

[@ruben_balea]

Try an industrial disk on module, those things are expected to work fine even with the worst maintained industrial junk made over the last four decades, I saved one from a smashed slot machine and was really surprised to find that it works on systems that wouldn't even try to "talk" to a Compact Flash card. Maybe an industrial grade CF can be as good as a DoM... Anyway I was never able to use a CF with *any* dumb ISA IDE "controller" without ending with data corruption after a few hours or days while with EIDE/ATA-2 or newer controllers everything works as expected, I guess those controllers generate much cleaner signals with much better timings. LGR on one of his videos (I can't remember which one) had to resort to a real hard drive to be able to show some program or game running on his famous "woodgrain" 486, I think he already had everything isntalled on a CF on a faster computer to save time and then just moved the CF adapter to that 486 but on the 486 the CF was corrupting the data every now and then. Only those that keep the mainboards powered on for a few minutes each time to see at how many FPS will DOOM play seem to have luck with CF on ISA controllers... or maybe they just cut out any failures from their videos.

[@amirpourghoureiyan1637]

CF cards always gave me issues on PCs as a boot drive tbh, even ones meant for internal use. Had a lot more luck with the cheap SD card to IDE adapters, funnily enough on Macs it's kinda the opposite situation - just goes to show how temperamental old machines are with hardware lol.

[@DKJones96]

I have had surprisingly good luck with CF cards. Pretty much anything I have that runs an IDE drive has a CF card these days. My VLB 486 has run the same CF card for going on 10 years and it has a ton of time on it. I love them for these quick tests because I can just pop it into my modern machine, copy a program, and then slot it back into the machine without hassle. My AST 486 All-In-One also runs a CF card. Some of the issues that people run into could be old CF cards? I struggle to think of a CF card in my shop that has died or corrupted data. Better go knock on some wood....

[@DKJones96]

@@amirpourghoureiyan1637 Even more mondern machines? My Voodoo Pentium 3 rig has run the same 32GB CF card for 5+ years.

[@amirpourghoureiyan1637]

@@DKJones96 yeah I've used Sandisks and Transcend cards but they just don't want to boot on PCs like my Athlon and Pentum 4 builds, they work fine on my G4 and G3 systems though. The CF cards are a lot more expensive where I live than SD cards so I've just used them for a long time now.

[@FeliciaByNature]

"None of the codes make sense" - my life as a software engineer summed up in a PC repair video.

[@primus711]

be careful all that heat around those tantalum caps

[@gilatrout5301]

More like not enough IBMs ;)

[@jozsiolah1435]

Online pages write, that cacheless processors have 1 kb internal cache.

[@DKJones96]

The 386SX has 8x 32-bit internal registers. Outside of that it has no cache like the 486 series did. The Cyrix units like my Cx486SLC-40 runs 1KB of internal cache and that speeds things up considerably. This TI unit has 8KB. There are some others out there running 16MB but I don't have those on hand.

[@ceruleanserpent387]

Does it run doom

[@DKJones96]

@@ceruleanserpent387 it should! But it is having an issue with that right now having to do with the cache.

[@TheVanillatech]

Easily run Crysis.