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  1. I do actually have a Pentium M laptop with a...

    I do actually have a Pentium M laptop with a hardware parallel port, does PLIP perform significantly better than serial PPP? I've tried using EPPPD over a 16550 serial port and the software overhead...
  2. Ugh. The eBay going price for an AUI dongle seems...

    Ugh. The eBay going price for an AUI dongle seems to be in the $25+ shipped ballpark just by itself. When I think of how many of these I saw go in the trash...



    Poking around it looks like the...
  3. What should I look for in an Ethernet card for an XT-class computer?

    Recently I've sort of had the yen to try putting an Ethernet card in my old Tandy, but I'm realizing I don't quite know where to start. (I do have some experience with DOS networking, but it's very...
  4. I'll try to wrap my head around it when I'm done...

    I'll try to wrap my head around it when I'm done banging my head on that stupid day job thing. ;)

    My decode solution is probably a lot less clever than yours; the bottom 384k is the...
  5. Shed dirt may well have a lot of rust and other...

    Shed dirt may well have a lot of rust and other potentially conductive yuck in it, any kind of bath is probably not a bad idea. I usually use a combination of alcohol and vinegar treatments with some...
  6. From the looks of that board it might not be a...

    From the looks of that board it might not be a bad idea to just clean it at the same time you replace the '244. It looks pretty dirty, it's possible there could be something sticking to it that's...
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    Just as an aside, that article above says that...

    Just as an aside, that article above says that any attempt to use Grub2 to load a kernel on their 486 caused an immediate reboot, they had to use LILO instead. That may be an interesting data point.
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    Here's an article about compiling a working Linux...

    Here's an article about compiling a working Linux distribution for a 64MB RAM 486 machine in 2018:

    http://yeokhengmeng.com/2018/01/make-the-486-great-again/

    Getting it to go in only 8MB might...
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    I was going by the system requirements page that...

    I was going by the system requirements page that says it still only needs a 486:

    http://www.slackware.com/install/sysreq.php

    Strictly speaking I don't know if there's anything that gets...
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    Checking the latest stable kernel source (5.3.6)...

    Checking the latest stable kernel source (5.3.6) these are all still valid options:



    I think Slackware is still compiled for 486 in the default distribution; it looks like its last release was...
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    Support for CPUs as old as the 486 is still...

    Support for CPUs as old as the 486 is still technically in the Linux kernel and you can, with sufficient hassle, scrape up or build a working distribution but, yep, mainline distributions are all...
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    If you listen carefully you can still hear the...

    If you listen carefully you can still hear the echos of the nerd-range that erupted in 2012 when the mainline Linux kernel cut off support for the original 80386 CPU.
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    Well, the 186 wasn't out yet when they designed...

    Well, the 186 wasn't out yet when they designed the PC so... bird in the hand, or whatever. Really I think the lesson of the 186's "failure" is that having to program at the bare metal instead of...
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    Arguably one of the reasons RISC ended up not...

    Arguably one of the reasons RISC ended up not working out so well for the personal computer market the first time around is the RISC paradigm was never really apropos for markets which expect that...
  15. That's 74LS157 in an interesting part, I need to...

    That's 74LS157 in an interesting part, I need to wrap my head around its possibilities a little more. It looks like you're using essentially the same scheme I am to split the RAM chip between base...
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    There are a number of Chinese companies making...

    There are a number of Chinese companies making MIPS64 compatible CPUs, mostly for domestic consumption, but weird little micro-PCs and netbooks based on them occasionally leak out.
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    IBM recently announced they were open sourcing...

    IBM recently announced they were open sourcing the Power ISA, so it's possible that some other company or consortium could pick up the ball and run with it. Honestly I suspect if this succeeds at all...
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    I keep thinking SPARC has *got* to be dead by...

    I keep thinking SPARC has *got* to be dead by now, but it's apparently still shambling along in the hands of Fujitsu. It'll be interesting to see how long that lasts.
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    Modern x86 CPUs combined with 64 bit EFI no...

    Modern x86 CPUs combined with 64 bit EFI no longer do much initialization in Real Mode, but they do technically still have it. And even though vm86 mode no longer exists in 64 bit mode you can still...
  20. I have in my junk bin a late model 5.25" floppy...

    I have in my junk bin a late model 5.25" floppy drive that I'm pretty sure is half of one of those combo drives. (All of the mechanism is about one inch tall, with only the slightly odd faceplate...
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    I threw a V-20 into my Tandy 1000 to try to eke a...

    I threw a V-20 into my Tandy 1000 to try to eke a little extra speed out of it, but I kind of consider it a special case. The 1000 line had models that covered the CPU speed spectrum from original XT...
  22. 3d-printing PCB substrates is already a thing, so...

    3d-printing PCB substrates is already a thing, so I wouldn't rule out the possibility that you could combine that with some kind of automated pick robot that could place tiny bare silicon building...
  23. Degrading memories can be reflashed or, more...

    Degrading memories can be reflashed or, more importantly, once you actually have a working design you could always port it to a new part as necessary indefinitely into the future. But, yes, the 5v...
  24. There is a small but growing field of interest in...

    There is a small but growing field of interest in using programmable logic (CPLDs, small FPGAs) to replace individual ASICs, but it is true that the level of difficulty starts going up exponentially...
  25. That's not a bad plan. The next thing upstream is...

    That's not a bad plan. The next thing upstream is a '244 buffer, if you're not getting good RGBI out it could be that.
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