[Coco] J&M Controller Manual request

[David Ladd]

Art,

Thank you for the code example.  That will make it easier to make sure
it doesn't over lap with something else important.

I have been slowly upgrading all my floppy controllers and my 5.25"
floppy drives to use the standard PC style 34pin connectors that are
gold plated to reduce problems with connection problems.

So far all orig FD501 and FD502 cables have gotten the 34PIN crimp-on
connectors added as well.  So my floppy systems are almost ready.

Only thing I need to do is build a box to hold a standard 360K 5.25",
720K 5.25", 720K 3.5", and a CDROM/DVDROM for use with the SuperIDE
and SuperDrivers.

After that is done my next task is to see if Mark at Cloud9 has any
HD63B09E's left and ProTector boards so I can upgrade this CoCo3 to a
better CPU.

Oh the fun of playing with good solid equipment :D

On Tue, Sep 11, 2012 at 11:37 PM, Arthur Flexser <flexser at fiu.edu> wrote:
> I don't have the J&M manual, but as far as the addressing of the
> parallel port and the code to print a character, here's the relevant
> character print code, from the Extended ADOS-3 source (the A register
> contains the character to be printed):
>
> PRTJM   LDB $FF4C
>
>              ASRB             test bit 0
>
>              BCS PRTJM    loop until ready
>
>              STA $FF44     print character
>
>              RTS
>
> Hope that helps!
>
> Art
>
> On Tue, Sep 11, 2012 at 9:33 PM, David Ladd <drencor at gamepixel.net> wrote:
>> I am looking for the manual to the J&M Systems Disk Controller.  I
>> recently got my controller fixed and am trying to figure out the
>> memory map of the parallel port on it so I can try to make a cable to
>> make use of it and to also make sure that it doesn't overlap with any
>> other carts I want to use.
>>
>> Thanks for any help if anyone has  PDF for this controller.
>>
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>
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