I need someone to explain this to me.

Interfacing the ISA bus

isa

Sometimes you need a lot more data lines than are available in a parallel port. Hack-A-Day reader [abhishek dutta] has written a guide for building projects connected to the ISA bus. The guide gives you 32 general purpose I/O lines that you can use for complex project like a digital oscilloscope. To make things easier, some tips on debugging are included as well. Now to unearth a motherboard with an ISA slot

Comments

  1. Drew says:

    hmm, I may actually try this. I was thinking of setting up some various sensors to an old computer (temp, both air and computer, fan speeds, etc.)

    luckily i have an old 400 mhz machine with two ISA slots!

  2. ed3 says:

    Neat! I’m sure there are a bunch of old Pentium/P2 mothermoards with mostly unused ISA slots.

    Also, slightly apropos… There’s was a PCI hack posted not too long ago… http://www.hackaday.com/entry/1234000473062256/

  3. Eric says:

    I’ve been thinking about making a synth out of old isa soundboards. While the easiest way would just be to crank up one of the old ISA equipped mobos in the basement, where’s the fun in that?

    I think that newer micros should be able to drive the ISA bus, it is pretty simple.

  4. pragma says:

    Nice article.

    I was curious to learn about how to interface with ISA but also found myself digging through the linked PDF material over on texasinsturments.com to learn about the IC’s used. Fascinating.

  5. Ben says:

    sweet, I’ve been wondering what to do with that old Pentium I 200 mhz computer sitting in the corner (its got 3 ISA slots on it).

  6. Will says:

    Ooops..
    May just have put a motherboard such as on a bonfire…..
    Ah well :P

  7. hellbent says:

    my family pc, a windows 2k machine now, has an isa slot.

  8. Liam says:

    Very nice.

    This might be a silly question, but would this be useful for applications such as LabView? I think a lot of people working at my department (a university physics dept.) might find this very useful.

  9. eric says:

    Soyo and Advantech built pentium 4 computers with ISA slots. There is an ISA bridge chip that they use to add it now that the chipsets don’t have the isa bridge built in any more.

    The Soyo mobo is SY-P4I845PE/GVISA Plus

  10. Rossitron says:

    liam:
    My guess would be no, seeing as you’d need to write a driver for labview to interface with it.

    I would look into the many low cost (around $100 USD) USB DAQ devices. Just google for ‘usb daq’.
    Or if you really have to do it on the cheap, try this thing:
    http://www.hobbyengineering.com/H1516.html

  11. dioxide says:

    isa was the last true hobby bus. usb is getting there though. ftdi is offering usb modules you can add to your projects, with drivers for most any os. very easy to use.

    i wonder if i could make myself an isa to usb converter with an external chassis..

  12. Jason spence says:

    Or you could just use a programmable address logic chip so you don’t have to mess around with so many logic ICs :)

  13. calvin says:

    I couldn’t find a contact email address, so Ill just put this here. I got a “clapper” for my birthday, the one that turns off your appliances if you clap twice. I was wondering if anyone has heard of any hacks for one of these things, I’m sure theres a lot of fun stuff you could do with it.

  14. mycroes says:

    Just for those of you who were wondering…

    AthlonXP-2700 michael # lspci | grep -i isa
    00:11.0 ISA bridge: VIA Technologies, Inc. VT8237 ISA bridge [KT600/K8T800/K8T890 South]
    AthlonXP-2700 michael #

    No isa slots there though, just the bridge, but I think there must be a way to use it…

  15. fucter says:

    you can use the clapper to turn off the lights in your room

  16. paul h says:

    PC104 is electrically similar (identical?) to ISA with a different form factor. Lots of cards for experimenting, breaking out lines, etc.

  17. bogdanm says:

    I don’t want to be the party breaker here, but you can also do PCI, albeit not remotely as easy as this:

    http://elm-chan.org/works/pci/report_e.html

  18. Ryan says:

    This company http://www.arstech.com/cgi-bin/ccp51/cp-app.cgi builds isa to usb adaptors that might be useful in these projects.

  19. IMPORTANT !!!

    URL of this article has changed to

    http://www.myjavaserver.com/~thelinuxmaniac/isa

    TLM

  20. Metal WOlf says:

    I have a lot of computers with isa slots, if anyone needs some contact me at metalwolf@bluebottle.com

  21. The original article is available at:

    http://abhishekdutta.org/interfacing-with-the-isa-bus/

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s