blgardne@esunix.UUCP (Blaine Gardner) (06/24/87)
Well, it looks like I'm a little too efficient (a first! :-) yesterday I
posted the patch program for the FastFonts ScreenBlanker. Now today's mail
brings another disk from Microsmiths with an enhanced patcher. This one
fixes the ScreenBlanker bug like the first, but also updates FastFonts to
version 1.02.
Charlie Heath asked that I post this version rather than the first, so
kill the first one, and use this one instead.
The readme, source, and uuencoded binary are below.
------------------------------------------------------------------------
This is a patch program to upgrade Microsmiths FastFonts V1.01 to V1.02
The patch is to solve a problem with ScreenBlanker and ScreenBlanker2;
both of these programs in V1.01 of FastFonts can cause you to drop
characters when using a modem program when the blanker dims the screen.
Thanks to Blaine Gardner for reporting the problem.
Also included is a patch for FF and FastFonts which can improve system
performance in multitasking. This patch allows other tasks to run
more efficiently while FastText is being displayed; it doesn't make
a big difference in most cases, but is included since the ScreenBlanker
patch was being released.
These three files are copyright (c) 1987 by Microsmiths, Inc,
but may be freely distributed as long as all three files are together
in their original unmodified condition.
For instructions, after de-arcing, type "ffpatch1" from CLI, after
copying ScreenBlanker and ScreenBlanker2 (plus FFand FastFonts if
you want the multitasking enhancement) to Ram: . If you have questions,
please contact:
Microsmiths, Inc
POBox 561
Cambridge, MA02140
bix:cheath CIS: 74216,2117
------------------------------------------------------------------------
/*FFPatch1.c */
/* This program installs patches in Microsmiths ScreenBlanker V1.01 */
/* to solve a bug which can cause comm programs to loose characters */
/* when the ScreenBlanker or ScreenBlanker2 blank the screen. */
/* Also included is a patch to improve multitasking performance when */
/*running FFor FastFonts. */
/* This patch program will only work with V1.01 FastFonts, though */
/* the patches will notbe installed if the wrong version is used. */
/* Microsmiths, Inc */
/* POBox 561 */
/* Cambridge, MA02140 */
/* bix:cheath CIS:74216,2117 */
#include <stdio.h>
/*Patches to install for ScreenBlanker */
static long SB1[] =
{
1561, -120,124,
1691, -126,118,
0
};
/*Patches to install for ScreenBlanker2 */
static long SB2[] =
{
1571, -120,124,
1651, -126,118,
0
};
/*Patches to install for FF */
static long FF1[] =
{
637, 10,50,
638, 67,32,
639, 111,67,
640, 112,111,
641, 121,112,
642, 114,121,
643, 105,114,
644, 103,105,
645, 104,103,
646, 116,104,
647, 32,116,
648, 40,32,
649, 99,32,
650, 41,-87,
1911, -114,-112,
1967, -114,-112,
2219, 86,88,
2303, 117,-18,
2304, 0,-1,
2305, 0,28,
2537, 95,111,
0
};
/*Patches to install for FastFonts */
static long FastFonts1[] =
{
958, -101,50,
959, 48,-101,
960, 59,48,
961, 51,59,
962, 49,51,
963, 59,49,
964, 52,59,
965, 48,52,
966, 109,48,
967, 10,109,
968, 67,32,
969, 111,67,
970, 112,111,
971, 121,112,
972, 114,121,
973, 105,114,
974, 103,105,
975, 104,103,
976, 116,104,
977, 32,116,
978, 40,32,
979, 99,-87,
980, 41,32,
4817, -114,-112,
4873, -114,-112,
5125, 86,88,
5209, 117,-18,
5210, 0,-1,
5211, 0,28,
5993, 95,111,
0
};
main(argc,argv)
int argc;
char *argv[];
{
printf("Patch program 1987,Microsmiths Inc\n\n");
if (argc != 2 ||strcmp(argv[1],"OK" ) != 0 )
{
printf("This patch solves a bug which can cause telecom programs to loose\n");
printf("characters when either version of 1.01 ScreenBlanker is running.\n");
printf("It can also improve multitasking system performance of FF& FastFonts.\n\n");
printf("To run this program, COPYboth ScreenSaver and ScreenSaver2 from your\n");
printf("FastFonts V1.01 disk to RAM: . Also copy FFand FastFonts V1.01 to RAM:\n");
printf("if you want the performance enhancement.\n\n");
printf("Then run this program with command line:\n");
printf("1> FFPatch1 OK\n\n");
printf("This will leave the patched programs in RAM:\n");
exit(1);
}
do_patch("ram:ScreenBlanker", SB1 );
do_patch("ram:ScreenBlanker2", SB2);
do_patch("ram:FF",FF1);
do_patch("ram:FastFonts",FastFonts1);
printf("\nFinished - now copy the programs from Ram: to your working disks\n");
printf(" and thank you for your support...\n ...cheath\n");
}
do_patch(filename, patcharray )
char *filename;
long *patcharray;
{
FILE *fhand;
char cval[1];
long fpos;
long *ptr;
printf("Patching %s ...\n",filename);
if ((fhand = fopen(filename, "r+")) == 0L)
{
printf(" Can't find %s - skipping\n",filename);
return 0;
}
/*First verify all read values */
for (ptr=patcharray; fpos = *ptr++; )
{
if (fseek(fhand, fpos, 0L) != 0 )
do_error(filename,"Error seeking in file");
if (fread(cval,1,1,fhand) == 0 )
do_error(filename,"Error reading file");
if (cval[0] != *ptr++)
{
printf(" Error verifying %s - wrong version?\n Skipping %s\n",filename,filename);
return 0;
}
ptr++;
}
/*Next, install the patches */
for (ptr=patcharray; fpos = *ptr++; )
{
if (fseek(fhand, fpos, 0L) != 0 )
do_error(filename,"Error seeking in file");
ptr++; /*Skip verify value */
cval[0] = *ptr++;
if (fwrite(cval,1,1,fhand) == 0 )
do_error(filename,"Error writing new value to file");
}
if (fclose(fhand) != 0 )
do_error(filename,"Error closing file");
printf(" Completed patch for %s\n",filename);
return 1;
}
do_error(err1,err2)
char *err1,*err2;
{
printf("\n Error patching file %s\n %s\n\nAborting Patches!\n",err1,err2);
exit(20);
}
------------------------------------------------------------------------
begin 777 ffpatch1
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end
------------------------------------------------------------------------
--
Blaine Gardner @ Evans & Sutherland
UUCP Address: {ihnp4,decvax}!decwrl!esunix!blgardne
Alternate: {ihnp4,seismo}!utah-cs!utah-gr!uplherc!esunix!blgardne