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  1. Replies
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    930

    Well done Alex and I like the Soviet chip - it...

    Well done Alex and I like the Soviet chip - it looks classy.

    Now as you said you have a SS floppy drive you're going to need a BIOS that is likewise SS, and maybe your ROM is SS too? Watch out for...
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    Hi Alan I wrote a very similar mail to another...

    Hi Alan

    I wrote a very similar mail to another eBay seller who wanted a grand for a broken Superbrain (this one was a QD and in stunning cosmetic condition). He ignored me! Ha.

    Alas, no one...
  3. Thread: z80 and hardware

    by JonB
    Replies
    12
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    463

    Yes, I built the Micro UK101 with point to point...

    Yes, I built the Micro UK101 with point to point wiring (never again!!) and it is still working fine, not that I ever actually use the thing.

    Regarding GIDE, there is a simpler option:...
  4. Thread: z80 and hardware

    by JonB
    Replies
    12
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    463

    http://searle.hostei.com/grant/cpm/index.html ...

    http://searle.hostei.com/grant/cpm/index.html

    A 9 chip Z80 CP/M computer you can build yourself. Might be interesting to try it. Much cheaper than building from a kit.

    I do second what Dwight...
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    OK, this is good. Next up we need to fix the ???...

    OK, this is good. Next up we need to fix the ??? issue. It could be one of a number of different problems but from the sound of what you've written via PM it could be one of those bad connections.
  6. Thread: Os-9 68k

    by JonB
    Replies
    6
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    1,529

    I have a set of equipment that was used to...

    I have a set of equipment that was used to develop OS9 for the Atari ST... I think.. It's in several boxes waiting to be checked out. One of the items is a special disk drive unit.

    I have no other...
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    1,694

    I've got one too but it's not for the Exidy unit...

    I've got one too but it's not for the Exidy unit - it's for a UK floppy drive called FDX-180, assuming the media still works (the drive doesn't..)
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    1,844

    Where are you located?

    Where are you located?
  9. Brilliant news zippysticks, nice one! Hmmm, I...

    Brilliant news zippysticks, nice one!

    Hmmm, I really, really fancy an IMSAI.
  10. He has to try something to restore these boards....

    He has to try something to restore these boards. Rather than proposing this liquid or that, might we ask the unusual question "What's best for dissolving solidified mouse poo & wee?"

    I'll wager it...
  11. Hi Zippysticks Your PSU looks similar to the...

    Hi Zippysticks

    Your PSU looks similar to the one in my S100 box. I have two fat diodes like those plus a bridge rectifier and three fat capacitors. Annoyingly the transformer has a label on it...
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    Take care removing the drive and keep your hands...

    Take care removing the drive and keep your hands away from the back of the CRT. A long Pozidriv screwdriver really helps here.
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    Ferris Beuller is character played by a young...

    Ferris Beuller is character played by a young Matthew Broderick, who also played the "hacker" kid in "War Games" - the film that famously featured the IMSAI.

    As a result of the success of the film...
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    1,811

    You're welcome. I expect you're too busy with...

    You're welcome.

    I expect you're too busy with the IMSAI to be much bothered by the PCW at the moment though... you lucky fellow.. Shall I start calling you "Ferris"?
  15. Looks like that ship has sailed, but one never...

    Looks like that ship has sailed, but one never knows what might be found after a good scrub.

    +1 on the bleach..
  16. I think I missed this - you bought an IMSAI? Wow....

    I think I missed this - you bought an IMSAI? Wow.

    Might be visiting you soon for a nose! If you'll have me that is... ;)
  17. Seems a fantastic find to me. Given its...

    Seems a fantastic find to me. Given its historical significance, I think you should restore it, or at least attempt to restore it. You'll get lots of advice from this forum...
  18. Replies
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    1,011

    Ah yes, the dreaded hill. A tragedy! The 8002...

    Ah yes, the dreaded hill. A tragedy!

    The 8002 will work but as I said before it will give you chopped off characters. You can still use the computer with it.

    So, for the S100 board it is a...
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    You need to take a trip to the Post Office. Come...

    You need to take a trip to the Post Office. Come on, you can do it!

    The keys are the same as those used in a BBC Master, so if you struggle with any of them replacements are reasonably easy to get...
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    367

    What speed are you running it at?

    What speed are you running it at?
  21. Replies
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    1,011

    A comment made about classic sports cars: Never...

    A comment made about classic sports cars: Never drive your dream car.

    Fortunately the SB is a bit more predictable - it's a competent CP/M computer with a smaller than average TPA, much like any...
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    Hi Alan As I said in my PM, you are nearly...

    Hi Alan

    As I said in my PM, you are nearly there.

    The following is for the interest of the readers (as I have said all this via PM already).

    That machine is definitely booting up. The seek...
  23. Replies
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    Not sure about ROM-MJS but on a standard...

    Not sure about ROM-MJS but on a standard Multicomp, the baud rate is set in the Microcomputer.vhd file at the bottom.


    -- Serial clock DDS
    -- 50MHz master input clock:
    -- Baud Increment
    --...
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    When the CP/M CCP starts up, one of the first...

    When the CP/M CCP starts up, one of the first things it tries to do is read the directory of the boot drive.

    I'm not sure what you can do on a CP/M system with no storage, or if you can even bring...
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    Hello Angel Start here:...

    Hello Angel

    Start here: http://www.gaby.de/cpm/manuals/archive/cpm22htm/ch6.htm

    As you're using the UART for a console, you need to initialise it (baud rate, handshake, etc) in the BOOT/WBOOT...
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