keenmaster486 wrote on 2020-12-18, 01:34:A little update. […]
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A little update.
The IBM Thinkpad 365X has become my main DOS/Win31/Win95 laptop. Aside from the screen scaling, it's well nigh perfect for the task.
The Thinkpad 600E I'm using for Windows 98 and later DOS stuff. Again, near perfect aside from wonky screen scaling which only throws off a couple of games.
I put Linux on my Thinkpad 560X just for kicks. It's a barebones mostly CLI-only version of Debian, works fine and is fun to play around with.
But in other news, I just sniped a Thinkpad 240 on eBay. This is significant because these rarely pop up. What I really want is a 240X since it has a Pentium III and a better (more compatible) video chip, but I see these so rarely that I went for the 240 just to have some fun with it. It's a fun little ultraportable which should be a great travel machine. I'll probably put Windows 95 on it.
Oh, you’re the cat who won the 240 auction tonight? Congrats! I recently bought a 240 from Japan but somehow ended up with 3 (I bid on a fixer-upper on eBay that needed a system board swap, and then a 400MHz model showed up on Yahoo auctions Japan at a very good price) - Well, 2, for now. One more is still on a slow-boat from Japan heading my way (I hope). It’s definitely a good little machine, but loading a working OS and getting working batteries for it could be a pain unless you have the floppy drive and the 17/21mm floppy drive cable. If you plan to do a lot of vintage Thinkpad work, consider making yourself a custom FFC26 Gotek (based on the SFRM72-DU26/SFR1M44-DU26, either will do it) for FlashFloppy using the enclosure of a 21mm drive (10H3980) - it can then be used for the 560/E/X, 600/E/X, 240/X/Z and the 365XD (that one would need the 20/21mm cable).
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As a former 240X owner, you are better off on the 240. The Pentium III/500s (2609-5xx) or their Coppermine Celeron 450 cousins (2609-4xx) found on some 240X models are not that much more efficient than the Mendo Celerons. It is indeed faster but it sucks down power slightly more, and it generates more heat so the fan comes on more often. It’s also not that much faster than the TP240 Celeron 400 variant unless it's doing something that takes advantage of SSE or the bigger L2 - for retrogaming or most productivity apps, that doesn't buy you much more. In the old days the machines were hobbled by their hard drives more than anything else, and you rarely see any massive speed gains there.
Both the Thinkpad 240 and the 240X comes with one RAM channel occupied by 64MB of soldered RAM (8x8MB modules), and one free 144 pin SODIMM slot feeding the other channel - it's the same situation as its cousin the 600 (which has 32MB soldered in), and that messes with the max RAM count that you may have. The 240x uses the 440MX chipset so your RAM is limited to 192MB (you can put a 256MB PC100 SODIMM in, but any access to RAM above 256MB will crash the machine, so a single 128MB SODIMM is a practical limit for most) - the 240 uses the 440ZX, which allows up to 512MB - the 256MB module is okay and yields you a total of 320MB. The extra RAM is super-useful for things like caching CD images via shsucdrd, Win2k/XP, and BeOS/Haiku and Linux.
You can physically disable (cut the traces on) the soldered chips on the 240X and just use a single 256MB module, but that's anecdotal and a bit risky. I did it to a 240X and it didn't work. There were 192MB DIMM units sold in Japan (VN10S-192M) that are specifically designed for this situation and bring the max to 256, but that's extremely rare. I also suspect that it’s just a standard 256MB unit with some SPD reprogramming done to ignore the first 64MB. There are also 240Z (440MX based) model with 128MB embedded (2609-72x or 82x) so bringing it to 256MB is super-simple, but those are even more rare than the 240X, and strictly limited to Japan. If you are willing to go that far, might as well pick up an S30/S31 (type 2639), which is the super-collectible ultimate evolution of the 240Z, but also limited to 256MB max. It's definitely a weird case of upgrading a machine, and losing RAM capacity in return. To be honest, 256MB is not really adequate for a Coppermine P3 and is a constant hobble on similar machines like the Toshiba Porteges or the early Vaio SR series.
There are some serious marks against the 240x - IBM dropped the use of the excellent ESS Solo-1 for some Crystal combo (CS4281+4297A) that wasn’t too great, but it was also found on the X20/21s. The Silicon Motion SM712G GPU on the 240X isn’t that compatible versus the Neomagic NM2160C on the 240, nor is it faster. In fact, the Neomagic has better drivers in Linux, and comes with actual support in UniVBE 6.7, BeOS 4/5/Haiku and OS2 Warp3/4 - not something you enjoy on the Silicon Motion based 240X/Z/S3x series machines. I never ran into compatibility issues with Neomagic on oldschool DOS games. It’s not super-fast, but it’s efficient, the machine stays cool and it works in a pinch. The same can be said about old school win32/DirectX games - contrary to what some has said on Vogons, it can do lower resolution DirectX/Direct3D software mode, provided that you drop into 16bpp color mode first and restart Win98 after major gaming sessions. Remember, this is a 2MB PCI card with only 2D acceleration. 24/32bpp resolution is not a thing, and Neomagic engineers didn't write high quality drivers.
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Timedemo for demomap demo1/demo2.dm2 on Quake2 gets about 27/25 respectively, while UT99 on 400x300x16bpp gets an okay 22 FPS on DM-Crane practice/spectator mode with 8 bots...not terrible for a machine driven by a half-cache mobile P2 chip doing software rendering off a 66MHz FSB.
A word of advice? Buy a spare refurb TP240 system board (30L2766) with a Celeron 300A embedded. It’s available now on eBay for about 26 USD, with free shipping in the lower 48. Their internal LCD connector (the white, seemingly depopulated landing spot above the MiniPCI slot, that’s pulled from my fixer-upper) is known to cold solder fracture, and swapping the board for a working one is easier than using a hot air pencil to fix it. The boards are rare nowadays so take advantage of it while you can.
Funny enough, some eBay reseller in Italy has one right now with a broken LCD connector on a parts-only auction - don't. Just don't.
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