Re: [CAD_CAM_EDM_DRO] Re: Can I drip feed a bridgeport boss 5

Hi Luke,

Interesting that you mention the 286 parallel port instructions are
different? I know of no such differences, and I was quite involved
with them starting with the IBM PC. Actually, there are no specific
"parallel port instructions". There are I/O instructions that are used
to access the parallel (and other peripheral devices) in a PC. The
original PC used a 8255 parallel port interface chip, which had to be
initialized. Perhaps you are thinking of that. Newer PC's mimmic the
chip, and the BIOS initializes the chip. Perhaps you are thinking of
that?

Alan KM6VV

Luke1027 wrote:

> Brady,
>
> I do have a program and pin out from parallel port
> to drip feed to the Boss5. I am told that
> this program needs to run a 286 PC since it handles
> the parallel port instructions different than the newer mother
> boards do. I have not gotten it to work consistently
> yet, nor have I spend a lot of time trying to do so.
> I did get it to talk one day but never got it to work very well.
> The guy I got it from uses it all the time running programs
> for 6-8 hours. It was written by a friend of his in basic. However,
> this man died shortly after it was finished and he never did get the
> source code.
> If you would like, I can find all the info I have on it and email
> it to you off line. Maybe you and find out
> what I am doing wrong!!??
>
> Luke
>
>