November 2003 - Grx

mingw-gpc compilation fails
by Gábor Peintler 28 Nov '03

28 Nov '03

Hi, I tried to compile GRX 2.4.6 with pascal support threough makefile.w32, however, the creation of the executables from pascal sources was not successful. The compiler always said that there an unknown reference to WinMain@16. I used gcc3.2.3+gpc3.2.3. Does somebody have any suggestion? Regards, Gabor Peintler _________________________________________________________ Gabor Peintler University of Szeged, Institute of Physical Chemistry Address: Szeged, P.O.Box 105., H-6701, HUNGARY or Szeged, Rerrich Bela ter. 1., H-6720, HUNGARY E-mail: Peintler(a)Chem.U-Szeged.HU Phone: 36(62)544-613 FAX: 36(62)544-652 _________________________________________________________

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Re: (PATCH) BUG in u_egavga.c - patch problem?
by Eugene Yavorsky 19 Nov '03

19 Nov '03

Hello, Allan! You wrote to "Eugene Yavorsky" <eugene_yavorsky(a)mail.ru> on Tue, 18 Nov 2003 20:16:52 -0500 (EST): AK> vdrivers/u_egavga.c:28: error: for each function it appears in.) AK> vdrivers/u_egavga.c:28: error: parse error before "r" AK> vdrivers/u_egavga.c:29: error: `r' undeclared (first use in this function) AK> make.exe[1]: *** [vdrivers/u_egavga.o] Error 1 AK> make.exe[1]: Leaving directory `c:/djgpp/contrib/grx246/src' AK> make.exe: *** [libs] Error 2 Posted source is not complete u_egavga.c. You must pacth your original u_egavga.c whith posted script; or edit it manually to replace line 82 of original file if(IREG_AX(r) == VESA_SUCCESS) return(TRUE); to if(IREG_AX(r) == VESA_SUCCESS){ _GrViDrvReLoadFonts(); return(TRUE); } And add this function after includes at beginning of file: void _GrViDrvReLoadFonts(void) { GRX_ENTER(); int86Regs r; sttzero(&r); // read font height to load appropriate ROM BIOS font IREG_AX(r) = 0x1130; IREG_BX(r) = 0x0000; int10(&r); IREG_BL(r) = 0x0000; if(IREG_CX(r) == 16) IREG_AX(r) = 0x1114; else if(IREG_CX(r) == 14) IREG_AX(r) = 0x1111; else if(IREG_CX(r) == 8) IREG_AX(r) = 0x1112; else{ DBGPRINTF(DBG_DRIVER, ("Strange font height = %d\n", IREG_CX(r))); GRX_RETURN(); } int10(&r); GRX_LEAVE(); } For your convenience, see attachment. With best regards, Eugene Yavorsky. E-mail: olg_eug(a)mail.i.com.ua

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(PATCH) BUG in u_egavga.c - Incorrect behaviour when installed DISPLAY.SYS to display non-Latin characters
by Eugene Yavorsky 10 Nov '03

10 Nov '03

Hello, all! SYMPTOMS: When loaded driver DISPLAY.SYS to support fonts with characters from non-latin alphabets, such as Cyrillics, Hebrew, Central European, Baltic etc., after termination of GRX application, localized fonts not loaded and international characters displayed incorrectly until manual reset video mode. This happen always under TESTED SOFTWARE ENVIRONMENT: OPERATING SYSTEMS: MSDOS 7.0, 7.1; MS Windows 95, 98, SE, ME; MS Windows NT, 2000, (XP?) DISPLAY DRIVERS: DISPLAY.SYS from corresponding DOS/Windows installation (or 32-bit analog for NT family) KEYRUS - available to me alternative device driver. CAUSE: Before terminating GRX application, this library always calls setmode() to restore initial videomode, which first invoke corresponding VESA function, instead of INT 10H AH=0, as expected (and supported) by driver. SOLUTION: Forced call to INT 10H to reload ROM fonts (this function superceded by driver DISPLAY.SYS and loads localized fonts). See code below. (P.S. Excuse my terrible English. See my e-mail ;-) ======= begin "diff -c -p u_egavga.c.bak u_egavga.c" *** u_egavga.c.bak Sat Jan 20 03:11:28 2001 --- u_egavga.c Mon Nov 10 20:04:34 2003 *************** *** 22,27 **** --- 22,56 ---- #include "vesa.h" #include "memfill.h" + void _GrViDrvReLoadFonts(void) + { + GRX_ENTER(); + int86Regs r; + sttzero(&r); + + /* read font height to load appropriate ROM BIOS font */ + IREG_AX(r) = 0x1130; + IREG_BX(r) = 0x0000; + int10(&r); + + IREG_BL(r) = 0x0000; + + if(IREG_CX(r) == 16) + IREG_AX(r) = 0x1114; + else if(IREG_CX(r) == 14) + IREG_AX(r) = 0x1111; + else if(IREG_CX(r) == 8) + IREG_AX(r) = 0x1112; + else{ + DBGPRINTF(DBG_DRIVER, ("Strange font height = %d\n", IREG_CX(r))); + GRX_RETURN(); + } + + int10(&r); + + GRX_LEAVE(); + } + int _GrViDrvDetectEGAVGA(void) { Int86Regs r; *************** static int setmode(int mode,int noclear) *** 79,85 **** IREG_AX(r) = VESA_FUNC + VESA_SET_MODE; IREG_BX(r) = (mode & 0x7fff) | (noclear ? 0x8000U : 0); int10(&r); ! if(IREG_AX(r) == VESA_SUCCESS) return(TRUE); IREG_AX(r) = (mode & 0x7f) | (noclear ? 0x80U : 0); int10(&r); return((_GrViDrvGetCurrentEGAVGAmode() == mode) ? TRUE : FALSE); --- 108,117 ---- IREG_AX(r) = VESA_FUNC + VESA_SET_MODE; IREG_BX(r) = (mode & 0x7fff) | (noclear ? 0x8000U : 0); int10(&r); ! if(IREG_AX(r) == VESA_SUCCESS){ ! _GrViDrvReLoadFonts(); ! return(TRUE); ! } IREG_AX(r) = (mode & 0x7f) | (noclear ? 0x80U : 0); int10(&r); return((_GrViDrvGetCurrentEGAVGAmode() == mode) ? TRUE : FALSE); ======= end of "diff -c -p u_egavga.c.bak u_egavga.c" With best regards, Eugene Yavorsky. E-mail: eugene_yavorsky(a)mail.ru

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