Date: Mon, 02 Nov 1998 13:26:00 -0600 From: "Alejandro Vázquez C." <alexv@sui.gda.itesm.mx> To: freebsd-hackers@FreeBSD.ORG Subject: VGA 90-columns text mode... Message-ID: <363E0747.FEA14658@sui.gda.itesm.mx>
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[-- Attachment #1 --]
Everyone:
I don't know where to send this, but I'm sure you are
interested. This weekend I found a utility to setup a
90-column text mode. Using a "vga-register" grabber I took the
CRT values and I was playing arround with them. After writing
a small dos program to setup diferent cominations of
Columns/Rows in text mode, I decided to extend the "sc0"
driver in FreeBSD to support those modes.
I've attached the corresponding "diffs" so you can test it
out. They are for the 2.2.7-RELEASE and I don't know if they
could work for any other version. The modified files are
"/usr/src/sys/i386/isa/syscons.c",
"/usr/src/sys/i386/include/console.h" (this file is the same
at /usr/include/machine/console.h so you must update both
files), and "/usr/src/usr.sbin/vidcontrol/vidcontrol.c". The
new modes added are "VGA_90x25", "VGA_90x30", "VGA_90x43",
"VGA_90x50", "VGA_90x60", and can be selected from vidcontrol.
The extention setups the VGA to display a 720pixels wide
screen with a 8pixels wide font (so 720/8=90). This is
possible for each height the VGA supports (350, 400, 480
lines). Those modes should work on most VGA cards (even those
"plain VGA"). I've tested these modes (succesfully) with a
Trident ProVidia 9685 (PCI) and a "plain VGA" Cirrus Logic
GD5320 (ISA). The author of the program I found on the net
stated that those modes where undocumented by IBM but worked
in the original IBM VGA. However I haven't done any other kind
of test to the code, so use it at your own risk.
Some applications seems to be sticked to 80-columns so they do
not use the extra columns ("ee" is the most significant case).
"bash" seems to read a "COLUMNS" environment variable at
startup. "lynx" looks great at 90x30 (the text is easier to
read on some pages) without any extra effort. I haven't tested
any other application.
Mail me for comment....
-alexv
[-- Attachment #2 --]
*** /sys/i386/isa/syscons.c.orig Tue Jul 7 00:23:22 1998
--- /sys/i386/isa/syscons.c Mon Nov 2 01:17:58 1998
***************
*** 294,299 ****
--- 294,300 ----
#ifdef SC_SPLASH_SCREEN
static void toggle_splash_screen(scr_stat *scp);
#endif
+ static void setup_mode90(char *mp); /* alexv */
struct isa_driver scdriver = {
scprobe, scattach, "sc", 1
***************
*** 1500,1505 ****
--- 1501,1512 ----
case SW_ENH_B80x43: case SW_ENH_C80x43:
case SW_EGAMONO80x25:
+ case SW_VGA_C90x25: case SW_VGA_M90x25: /* alexv */
+ case SW_VGA_C90x30: case SW_VGA_M90x30:
+ case SW_VGA_C90x43: case SW_VGA_M90x43:
+ case SW_VGA_C90x50: case SW_VGA_M90x50:
+ case SW_VGA_C90x60: case SW_VGA_M90x60:
+
if (!crtc_vga)
return ENODEV;
mp = get_mode_param(scp, cmd & 0xff);
***************
*** 1520,1525 ****
--- 1527,1580 ----
else
i = 0;
switch (cmd & 0xff) {
+
+ case M_VGA_C90x25: case M_VGA_M90x25: /* alexv */
+ scp->status |= UNKNOWN_MODE;
+ scp->xsize = 90;
+ scp->ysize = 25;
+ scp->font_size = mp[2];
+ break;
+
+ case M_VGA_C90x30: case M_VGA_M90x30: /* alexv */
+ scp->status |= UNKNOWN_MODE;
+ scp->xsize = 90;
+ scp->ysize = 30;
+ scp->font_size = mp[2];
+ break;
+
+ case M_VGA_C90x43: case M_VGA_M90x43: /* alexv */
+ if (!(fonts_loaded & FONT_8)) {
+ splx(s);
+ return EINVAL;
+ }
+ scp->status |= UNKNOWN_MODE;
+ scp->xsize = 90;
+ scp->ysize = 43;
+ scp->font_size = 8;
+ break;
+
+ case M_VGA_C90x50: case M_VGA_M90x50: /* alexv */
+ if (!(fonts_loaded & FONT_8)) {
+ splx(s);
+ return EINVAL;
+ }
+ scp->status |= UNKNOWN_MODE;
+ scp->xsize = 90;
+ scp->ysize = 50;
+ scp->font_size = 8;
+ break;
+
+ case M_VGA_C90x60: case M_VGA_M90x60: /* alexv */
+ if (!(fonts_loaded & FONT_8)) {
+ splx(s);
+ return EINVAL;
+ }
+ scp->status |= UNKNOWN_MODE;
+ scp->xsize = 90;
+ scp->ysize = 60;
+ scp->font_size = 8;
+ break;
+
case M_VGA_C80x60: case M_VGA_M80x60:
if (!(fonts_loaded & FONT_8)) {
splx(s);
***************
*** 3371,3376 ****
--- 3426,3441 ----
{ M_VGA_C80x50, M_VGA_C80x25 },
{ M_VGA_M80x60, M_VGA_M80x25 },
{ M_VGA_C80x60, M_VGA_C80x25 },
+ { M_VGA_C90x25, M_VGA_C80x25 }, /* alexv { */
+ { M_VGA_M90x25, M_VGA_M80x25 },
+ { M_VGA_C90x30, M_VGA_C80x25 },
+ { M_VGA_M90x30, M_VGA_M80x25 },
+ { M_VGA_C90x43, M_ENH_C80x25 },
+ { M_VGA_M90x43, M_ENH_C80x25 },
+ { M_VGA_C90x50, M_VGA_C80x25 },
+ { M_VGA_M90x50, M_VGA_M80x25 },
+ { M_VGA_C90x60, M_VGA_C80x25 },
+ { M_VGA_M90x60, M_VGA_M80x25 }, /* } alexv */
{ M_VGA_MODEX, M_VGA_CG320 },
};
int i;
***************
*** 4171,4176 ****
--- 4236,4252 ----
}
void
+ setup_mode90(char *modetable) /* alexv */
+ {
+ modetable[5] |= 0x1;
+ modetable[9] = (modetable[9] & 0xf3) | 0x4;
+ modetable[10] = 0x6a; modetable[11] = 0x59;
+ modetable[12] = 0x5a; modetable[13] = 0x8d;
+ modetable[14] = 0x63; modetable[15] = 0x88;
+ modetable[29] = 0x2d; modetable[54] = 0x0;
+ }
+
+ void
set_mode(scr_stat *scp)
{
char special_modetable[MODE_PARAM_SIZE];
***************
*** 4193,4203 ****
--- 4269,4283 ----
/* setup video hardware for the given mode */
switch (scp->mode) {
+ case M_VGA_C90x60: case M_VGA_M90x60: /* alexv */
+ setup_mode90(special_modetable);
case M_VGA_C80x60: case M_VGA_M80x60:
special_modetable[2] = 0x08;
special_modetable[19] = 0x47;
goto special_480l;
+ case M_VGA_C90x30: case M_VGA_M90x30: /* alexv */
+ setup_mode90(special_modetable);
case M_VGA_C80x30: case M_VGA_M80x30:
special_modetable[19] = 0x4f;
special_480l:
***************
*** 4210,4225 ****
--- 4290,4311 ----
special_modetable[32] = 0x04;
goto setup_mode;
+ case M_VGA_C90x43: case M_VGA_M90x43:
+ setup_mode90(special_modetable);
case M_ENH_C80x43: case M_ENH_B80x43:
special_modetable[28] = 87;
goto special_80x50;
+ case M_VGA_C90x50: case M_VGA_M90x50: /* alexv */
+ setup_mode90(special_modetable);
case M_VGA_C80x50: case M_VGA_M80x50:
special_80x50:
special_modetable[2] = 8;
special_modetable[19] = 7;
goto setup_mode;
+ case M_VGA_C90x25: case M_VGA_M90x25: /* alexv */
+ setup_mode90(special_modetable);
case M_VGA_C40x25: case M_VGA_C80x25:
case M_VGA_M80x25:
case M_B40x25: case M_C40x25:
[-- Attachment #3 --]
*** /sys/i386/include/console.h.orig Fri Jan 30 04:47:24 1998
--- /sys/i386/include/console.h Mon Nov 2 01:16:34 1998
***************
*** 351,356 ****
--- 351,367 ----
#define M_VGA_CG640 36 /* vga 640x400 256 color */
#define M_VGA_MODEX 37 /* vga 320x240 256 color */
+ #define M_VGA_M90x25 40 /* alexv check for conflicts { */
+ #define M_VGA_C90x25 41
+ #define M_VGA_M90x30 42
+ #define M_VGA_C90x30 43
+ #define M_VGA_M90x43 44
+ #define M_VGA_C90x43 45
+ #define M_VGA_M90x50 46
+ #define M_VGA_C90x50 47
+ #define M_VGA_M90x60 48
+ #define M_VGA_C90x60 49 /* } alexv */
+
#define M_ENH_B80x43 0x70 /* ega black & white 80x43 */
#define M_ENH_C80x43 0x71 /* ega color 80x43 */
***************
*** 393,398 ****
--- 404,421 ----
#define SW_VGA_M80x30 _IO('S', M_VGA_M80x30)
#define SW_VGA_M80x50 _IO('S', M_VGA_M80x50)
#define SW_VGA_M80x60 _IO('S', M_VGA_M80x60)
+
+ #define SW_VGA_M90x25 _IO('S', M_VGA_M90x25) /* alexv { */
+ #define SW_VGA_C90x25 _IO('S', M_VGA_C90x25)
+ #define SW_VGA_M90x30 _IO('S', M_VGA_M90x30)
+ #define SW_VGA_C90x30 _IO('S', M_VGA_C90x30)
+ #define SW_VGA_M90x43 _IO('S', M_VGA_M90x43)
+ #define SW_VGA_C90x43 _IO('S', M_VGA_C90x43)
+ #define SW_VGA_M90x50 _IO('S', M_VGA_M90x50)
+ #define SW_VGA_C90x50 _IO('S', M_VGA_C90x50)
+ #define SW_VGA_M90x60 _IO('S', M_VGA_M90x60)
+ #define SW_VGA_C90x60 _IO('S', M_VGA_C90x60) /* } alexv */
+
#define SW_VGA11 _IO('S', M_VGA11)
#define SW_BG640x480 _IO('S', M_VGA11)
#define SW_VGA12 _IO('S', M_VGA12)
[-- Attachment #4 --]
*** /usr/src/usr.sbin/vidcontrol/vidcontrol.c.orig Sat Jul 18 06:37:54 1998
--- /usr/src/usr.sbin/vidcontrol/vidcontrol.c Mon Nov 2 01:28:34 1998
***************
*** 277,282 ****
--- 277,292 ----
mode = SW_ENH_C80x25;
else if (!strcmp(argv[*index], "EGA_80x43"))
mode = SW_ENH_C80x43;
+ else if (!strcmp(argv[*index], "VGA_90x25")) /* alex { */
+ mode = SW_VGA_C90x25;
+ else if (!strcmp(argv[*index], "VGA_90x30"))
+ mode = SW_VGA_C90x30;
+ else if (!strcmp(argv[*index], "VGA_90x43"))
+ mode = SW_VGA_C90x43;
+ else if (!strcmp(argv[*index], "VGA_90x50"))
+ mode = SW_VGA_C90x50;
+ else if (!strcmp(argv[*index], "VGA_90x60"))
+ mode = SW_VGA_C90x60; /* } alexv */
else
return;
if (ioctl(0, mode, NULL) < 0)
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