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From: stever@csuohio.edu (Steve Ratliff)
Subject: Re: FreeBSD Syscons MDA/HGA bug + fix
Message-ID: <1993Oct18.013204.12240@news.csuohio.edu>
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Organization: Cleveland State University
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References: <JKH.93Oct17171239@whisker.lotus.ie>
Date: Mon, 18 Oct 1993 01:32:04 GMT
Lines: 53
Jordan K. Hubbard (jkh@whisker.lotus.ie) wrote:
: In article <1993Oct17.073337.8151@news.csuohio.edu> stever@csuohio.edu (Steve Ratliff) writes:
:
: The new version of Syscons distributed with FreeBSD EPSILON has
: very poor support for HGA/MDA display adaptors. I seem to recall that
: the old 1.x version of Syscons had better support than the current one.
:
: The problem was very simply that FAT_CURSOR was defined by default,
: which HGA displays don't seem to like very well. The current release
: of FreeBSD (soon to be 1.0 RELEASE) has this problem fixed.
:
: Jordan
[sig deleted]
I took a closer look and tried all combinations of having
FAT_CURSOR defined and undefined with the original code and my previous
patch. Jordan is correct that having it undefined will work and give
you an underscore cursor on a HGA display with the original code. My
previous patch only works with FAT_CURSOR defined. I came up with a new
patch that attempts to do the right thing in both cases.
Jordan stated that the FAT_CURSOR can cause problems on certain
HGA/MDA adaptors and with some of the <$15.00 made in Taiwan clones I can
certainly believe this. All I can say is that with this new patch
FAT_CURSOR works fine on my HGA adaptor and having it undefined still
works as well.
*** syscons.c.orig Sun Oct 17 01:49:48 1993
--- syscons.c Sun Oct 17 20:40:50 1993
***************
*** 310,320 ****
printf(" <%d virtual consoles>\n", NCONS);
else
printf("\n");
- if (crtc_vga) {
#ifdef FAT_CURSOR
start = 0;
end = 18;
! #else
get_cursor_shape(&start, &end);
#endif
save_palette();
--- 310,321 ----
printf(" <%d virtual consoles>\n", NCONS);
else
printf("\n");
#ifdef FAT_CURSOR
start = 0;
end = 18;
! #endif
! if (crtc_vga) {
! #ifndef FAT_CURSOR
get_cursor_shape(&start, &end);
#endif
save_palette();