Re: Ampro Littleboard

William Meyer wrote:
>
> nospam@xxxxxxxxxxxxxxxxxxxxxx wrote:
> >
> > Likely the baud rate switch (or software ) on the terminal is munged
> > or a broken ground wire in the cable.
>
> Perhaps. I need to hook up the terminal to Hyperterminal, and verify
> that it's still alive, too.
-----------------
Just take a paper clip, unbend it, and stick it in the DB25 in pins
2 and 3 of the terminal port. That will loop it back to itself.


> > I fired mine up last night and got an ugly surprize, a 75188 died, no
> > terminal IO as a result. easy fix.
------------------------------------------
It might also be the DART IC. A simple fix as well.
But more likely it's a baudrate/dataframe error in the terminal setup.


> > As to reading the disks on a PC. First you will need a disk program
> > that knows kaypro format. Also match the disk drive to the media.
> > By that I mean make sure your using a 48 or 96 tpi drive to match the
> > media you have. Usual Ampros I've seen have 48tpi (40 track) 5.25
> > floppies on them, most PCs that have 5.25 floppies are of the later
> > 96tpi (80 track).
>
> Mine are all 96tpi disks. I've tried 22DISK, but so far no luck, and no
> clue as yet whether I'm fighting bad media.
-------------------------------------------
You should first install the Ampro Monitor ROM found on my site:

http://www.armory.com/~rstevew/Public/Roms/ampro/amprmntrLBZ80-1A.bin

That will let you analyze it.


> > I happen to use 3.5" floppies on mine (gives me 781k per drive)
> > so I can rom DOS a program that allows me to read/write 720k
> > dos floppies for file transfer.
>
> I tried to set up AMPROCPM, but it apparently uses a 16 bit driver that
> Win2K doesn't like at all, and I don't have a Win9X installation on the
> machine...
>
> Bill
------------------------------------
Worry about that later.
Use a DOS boot floppy with AmproCPM on it:

http://www.armory.com/~rstevew/Public/Ampro/amprocpm.zip

Ampro's are really easy to fix, not that much to 'em!

-Steve
--
-Steve Walz rstevew@xxxxxxxxxx ftp://ftp.armory.com/pub/user/rstevew
Electronics Site!! 1000's of Files and Dirs!! With Schematics Galore!!
http://www.armory.com/~rstevew or http://www.armory.com/~rstevew/Public
.

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