Xref: utzoo comp.sys.ibm.pc:15566 comp.binaries.ibm.pc.d:245
Path: utzoo!attcan!uunet!tektronix!reed!percival!bucket!leonard
From: leonard@bucket.UUCP (Leonard Erickson)
Newsgroups: comp.sys.ibm.pc,comp.binaries.ibm.pc.d
Subject: Re: vgif GIF-viewing program (Re: "Error in EXE program" machine lockup)
Message-ID: <888@bucket.UUCP>
Date: 15 May 88 01:14:42 GMT
References: <5057@ecsvax.UUCP> <8638@iuvax.cs.indiana.edu>
Reply-To: leonard@bucket.UUCP (Leonard Erickson)
Distribution: na
Organization: Rick's Home Grown Unix; Portland, OR
Lines: 39

In article <8638@iuvax.cs.indiana.edu> bobmon@iuvax.UUCP (RAMontante) writes:
<I'm using vgif on a CGA card (Z-158 display, actually).  When I use vigf's
<2-color option, it appears that the lower portion (one-fifth, maybe?) of the
<picture is missing.  That is, the screen is filled, but the picture looks
<like it should extend lower.  AND, when I try the 4-color mode, the picture
<is twice as wide as the screen -- I can see only the left half of (the upper
<part of) the same picture.  Can anyone explain this to me?

This is *normal* behavior. Your screen only has 200 lines of vertical display,
EGA, Herrcules, VGA, and some "special" cards will have more lines of data
(typically 350, though I've seen 400). This means that the picture gets
truncated at line 200. 

The horizontal problem is similar. In 2 color mode you've got a 640 wide
screen. I 4 color, you've got a 320 wide screen. So the right half of the
image gets truncated.

I may post CSHOW 4.0a if no one has done so yet. It give info as to the
height, width and number of colors of the image and then lets you pick
the display format. I don't even bother trying to display the image
when I get a VGA (I assume) image at 640x400x32 colors... on a CGA the
image won't be viewable.

<Also -- there was a showgif program posted a couple of weeks ago, supposed to
<be a CGA viewer.  It looks sort-of like it's in uuencoded form, but there's
<a "table" keyword and a list of printable ASCII characters preceding everything
<else.  I tried uudecoding it anyway, but the result hangs my machine so that
<I must soft-reboot.  So, What is this program?  What format?  Does it work?

I've seen this sort of uuencoded file before. I've only had trouble with it
once, and that may have been because the file was garbled. Sounds like you
need a newer uudecode... (I haven't tried to uudecode that file yet, so I may
be back to complain about too!)

-- 
Leonard Erickson		...!tektronix!reed!percival!bucket!leonard
CIS: [70465,203]
"I used to be a hacker. Now I'm a 'microcomputer specialist'.
You know... I'd rather be a hacker."