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Type: Posts; User: Chuck(G)

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  1. Yeah, pretty much--and word size.

    Yeah, pretty much--and word size.
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    Weren't there DSDD retrofit kits for those? ...

    Weren't there DSDD retrofit kits for those?

    ISTR that early TRS-DOS used address marks with the 1771 that later WD controllers couldn't uniquely distinguish from others when reading. I believe...
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    Okay, I remember that Model I used a 1771 for the...

    Okay, I remember that Model I used a 1771 for the disk drive controller, which I normally think of as an 8" controller (cf datasheet). That's what probably caused the brain fart. So, what, <90KB on...
  4. I assume that you've seen this OIC article...

    I assume that you've seen this OIC article.

    Having programmed very CISCy and RISC mainframes, when everything is said and done, I don't see a lot of difference. I do see that your ISA lacks...
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    Don't know much about the Model I, but isn't that...

    Don't know much about the Model I, but isn't that an 8" drive system? Given that 8" drives are 360 RPM/77 tracks, why would one want to jumper the drive to do 300 RPM? A 1.2M 5.25" drive is very...
  6. DC is fine; given the values, I'm surprised that...

    DC is fine; given the values, I'm surprised that disc ceramic caps weren't used, which is still an option. They're mostly for bypass; they don't actually handle any signals.
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    There used to be U-channel shaped adapters for...

    There used to be U-channel shaped adapters for irons that did a similar thing.

    How do you clear the holes in the PCB after the IC's been removed?
  8. Of course, if you replace the selenium rectifier,...

    Of course, if you replace the selenium rectifier, you'll miss out on the perfume when it goes... :) My opinion is that H₂Se smells worse than H₂S...
  9. You can check out the filaments with a simple...

    You can check out the filaments with a simple 1.5V battery. No need for a "B" battery for that.
  10. Well, that switch that selects battery or line...

    Well, that switch that selects battery or line operation is one complex unit--it could be corroded.

    I'd start with a 1.5V A battery and test it in battery mode initially--do the filaments glow?
    ...
  11. So, not something really noticeable to a casual...

    So, not something really noticeable to a casual (CLI, browser, email, etc.) user.

    Heck, I'm still using PS/2-interface mice on PS/2-USB converters...
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    Good luck--the programming details were jealously...

    Good luck--the programming details were jealously guarded by the chip vendors and usually only disclosed to qualified parties operating under an NDA. At least that's what I found when trying to get...
  13. Difference between a gaming mouse and ordinary mouse?

    The title says it all. I see a premium being charged for a "gaming" mouse over a "regular" desktop mouse. They're both optical and wired and have the same number of buttons and scroll wheel. ...
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    Well, it is a strange board--I wonder if it was...

    Well, it is a strange board--I wonder if it was part of some industrial setup.
  15. Heck, I've got a system running XP from a CF card...

    Heck, I've got a system running XP from a CF card and it's run for years. I ran a Linux mailserver from a 6GB Microdrive for about 6 years, 24/7.

    Maybe SSDs are garbage now. What's odd is that...
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    You're probably using the vcfed search engine. ...

    You're probably using the vcfed search engine. Don't--it's garbage. Use a real search engine and you get this.
  17. Oh, just hang on--it'll fall to a collector. ...

    Oh, just hang on--it'll fall to a collector. Victor 9000s aren't very common. If you'd like, I can post it to cctalk.
  18. How much use is this going to get? If not so...

    How much use is this going to get? If not so much you're fine with an MLC SSD; they all contain wear-leveling software so real wear is less than it would appear.

    FWIW, I use a SATA SSD with a...
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    You forgot VLB, EISA and Microchannel.

    You forgot VLB, EISA and Microchannel.
  20. Bingo! I was wondering when someone was going to...

    Bingo! I was wondering when someone was going to identify this as a Victor Sirius box, or, rather part of one.

    For those interested in the 5.25" drives, forget it--these are 96 tpi drives with...
  21. Most keyboard space bars have a wire/rod that...

    Most keyboard space bars have a wire/rod that serves as an equalizer, so that no matter where the space bar is pressed, the "feel" is the same. Have you misplaced the equalizer on yours?
  22. The fact that there's a speaker in that box tells...

    The fact that there's a speaker in that box tells me that this may well be more than a controller.
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    I've used shellac alcohol (largely ethanol) to...

    I've used shellac alcohol (largely ethanol) to clean flux off of boards and even perc (perchlorotheylene), but water is not your friend.. Rosin, as used in soldering is little different from the...
  24. Found a Realtek RTL8139B PCI card. I found a...

    Found a Realtek RTL8139B PCI card. I found a packet driver here. I'll give it a try.
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    I don't think that a 25W soldering iron is...

    I don't think that a 25W soldering iron is sufficient for through-hole PCB soldering. 40W should be about the minimum--and it should be temperature-controlled. You do need decent tools to do your...
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