[sci.electronics] Hercules monitor and posting circuits

dam@cs.glasgow.ac.uk (Mr David Morning) (11/23/90)

I have 2 questions to ask

1) Can anyone give me the vertical and horizontal scan rates for a Hercules
compatible monitor and also its pin-out at the "D: end. I want to try and
modify it for use with a Mac plus (~61 Hz V sync, ~17kHz Hsync)

2) I have a number of small one evening circuits that I would like to post
if anyone is interested but I don't know what format would be most suited
to posting. Some have layouts while others are just track-board. I think
I can generate HPGL and Postscript and can generate Pict (for a mac), TIFF
and GIFF (wot!! you haven't got a GIFF viewer given the traffic on a.s.p)
and may be able to generate other formats. I could also do ASCII for the
simple circuits.
What's your preference

Thanks in advance.

Dave

s8824753@mqcomp.mqcc.mq.OZ (David Creelman) (12/04/90)

In article <7032@vanuata.cs.glasgow.ac.uk> dam@cs.glasgow.ac.uk (Mr David Morning) writes:
>I have 2 questions to ask

	I used to have a hercules system but I don't have any of the technical
specs for them so I can't help you with this one. Pity, it sounds usefull.
>
>1) Can anyone give me the vertical and horizontal scan rates for a Hercules
>compatible monitor and also its pin-out at the "D: end. I want to try and
>modify it for use with a Mac plus (~61 Hz V sync, ~17kHz Hsync)
>
>2) I have a number of small one evening circuits that I would like to post
>if anyone is interested but I don't know what format would be most suited
>to posting. Some have layouts while others are just track-board. I think
>I can generate HPGL and Postscript and can generate Pict (for a mac), TIFF
>and GIFF (wot!! you haven't got a GIFF viewer given the traffic on a.s.p)
>and may be able to generate other formats. I could also do ASCII for the
>simple circuits.
>What's your preference
>
>Thanks in advance.
>
>Dave

	Maybe you could post some of the simpler circuits as ascii files as 
you have described above and put the more complex ones out as GIFFS (I think
your right, everyone has or can get access to a GIFF viewer). I think 
everyone would appreciate some stuff that can be readily attempted and 
commented  on. 
	For the bigger ones I'd say just let them be available by mail so that
the group doesn't get too clogged up.

	What say you all ??

--------------------------------------------------------------------------------
David Creelman                        |     
Macquarie University                  |
Australia.                            |       'What can I say ......'
USENET s8824753@mqcomp.mqcs.mq.oz.au  |

rspangle@jarthur.Claremont.EDU (Froot Loop) (12/04/90)

In article <827@macuni.mqcc.mq.oz> s8824753@mqcomp.mq.oz (David Creelman) writes:
%In article <7032@vanuata.cs.glasgow.ac.uk> dam@cs.glasgow.ac.uk (Mr David Morning) writes:
%%2) I have a number of small one evening circuits that I would like to post
%%if anyone is interested but I don't know what format would be most suited
%%to posting. Some have layouts while others are just track-board. I think
%%I can generate HPGL and Postscript and can generate Pict (for a mac), TIFF
%%and GIFF (wot!! you haven't got a GIFF viewer given the traffic on a.s.p)
%%and may be able to generate other formats. I could also do ASCII for the
%%simple circuits.
%%What's your preference
%%
%%Thanks in advance.
%%
%%Dave
%
%	Maybe you could post some of the simpler circuits as ascii files as 
%you have described above and put the more complex ones out as GIFFS (I think
%your right, everyone has or can get access to a GIFF viewer). I think 
%everyone would appreciate some stuff that can be readily attempted and 
%commented  on. 
%	For the bigger ones I'd say just let them be available by mail so that
%the group doesn't get too clogged up.

I think GIF would be better in almost all cases.  (Even for the really
simple circuits) I don't think the size of the GIF file will be a problem,
even for huge (1280x1024) GIF images, as long as they are B/W only (1 bit
per pixel).  I've seen a number of Anime GIFs (network.ucsd.edu, if you must
know) that are B/W drawings of that size, that are around 16-40 KB long.
Even uuencoded, that's still under 60 KB at worst.  Also, circuit diagrams
tend to be almost all straight black lines and white space, which would
further enhance compression.  

Components and notes should be numbered on the image, and then described in
the accompanying text file.

And YES, I would love to see some circuits posted.  What types of circuits
do you have in mind?

-- 
 --------------------------------------------------------------------------
|   Randy Spangler                   |   Get your mind out of the gutter   |
|   rspangle@jarthur.claremont.edu   |   you're blocking my periscope      |
 --------------------------------------------------------------------------

murray@sun13.scri.fsu.edu (John Murray) (12/05/90)

In article <9943@jarthur.Claremont.EDU> rspangle@jarthur.Claremont.EDU (Froot Loop) writes:
>%In article <7032@vanuata.cs.glasgow.ac.uk> dam@cs.glasgow.ac.uk (Mr David Morning) writes:
>%%2) I have a number of small one evening circuits that I would like to post
>
>And YES, I would love to see some circuits posted.  What types of circuits
>do you have in mind?

For the big circuits, would making them available for anonymous ftp be more
appropriate? (personally, I'd be inclined to ignore GIF postings, unless they
had a pretty damn good lead-in, whereas an ftp site would let me browse at
my leisure during the off months.. Off months? What am I saying?...)

I don't think ASCII posting of small project type circuits is too far out
of line here, although it might bore the few pro's that haven't given up
on sci.e yet. :-) I think it would be especially appropriate if they were
original (or so obscure as makes no difference...)

>|   Randy Spangler                   |   Get your mind out of the gutter   |

Important Disclaimer: I seem to be running off at the opinions lately. Sorry.

-- 
Disclaimer: Yeah, right, like you really believe I run this place.
John R. Murray              |        "Never code anything
murray@vsjrm.scri.fsu.edu   |          bigger than your head.."
Supercomputer Research Inst.|               - Me