Mail Archives: djgpp/1995/12/11/20:45:03
| Xref: | news-dnh.mv.net comp.os.msdos.djgpp:3776
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| Path: | news-dnh.mv.net!mv!news.sprintlink.net!datalytics!news.ahc.ameritech.com!news.heurikon.com!daffy!uwvax!uwm.edu!vixen.cso.uiuc.edu!newsfeed.internetmci.com!btnet!zippy.dct.ac.uk!zippy.dct.ac.uk!nntp
|
| Newsgroups: | comp.os.msdos.djgpp
|
| Subject: | blitting to vga problem
|
| From: | Marc Coupar <mc AT dstn24 DOT dct DOT ac DOT uk>
|
| Date: | 11 Dec 95 16:15:15 GMT
|
| Organization: | University of Glasgow
|
| Nntp-Posting-Host: | bo211-pc29.cent.gla.ac.uk
|
| Lines: | 267
|
| To: | djgpp AT sun DOT soe DOT clarkson DOT edu
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| Dj-Gateway: | from newsgroup comp.os.msdos.djgpp
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This is a multi-part message in MIME format.
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>
> --------------------------------------------------------------------
>
> Newsgroup: comp.os.msdos.djgpp
>
> * Re: Which compile option for GCC ? - DJ Delorie (8)
> * DJGPP2.0 in windows NT - Gert van Antwerpen (21)
> * socket lib? - "Alexander V. Lukyanov" (7)
> * Re: (none) - Charles Sandmann (15)
> * wierd "bug" in my program? - A. Aue (136)
> o Erik Max Francis (27)
> * Re: zoneinfo ?? - DJ Delorie (7)
> * (none) - DJ Delorie (15)
> * Re: Stack size - Charles Sandmann (5)
> * coreleft() - "Alaric B. Williams" (13)
> * Re: Overlaying - "Alaric B. Williams" (27)
> * Re: Natas - "Lee Braiden" (6)
> * calling real-mode interrupt handler - Orlando Andico (32)
> * Re: Natas - juan j casero (7)
> * Re: Graphics in V2 - wroberts AT aug DOT com (27)
> * header file <math.h> - Hd (30)
> * SWORD - Orlando Andico (10)
> * Keyboard Handlers.. Argh! - battle DOT axe AT PEGASUZ DOT COM (20)
> * Building GCC, newbie questions - Kraig Hanson (17)
> * Natas - "A.Appleyard" (13)
> * Re: V2 questions - Charles Sandmann (30)
> * bash port? - "Alexander V. Lukyanov" (12)
> * Core files & V2 - Bill Currie (9)
> * Graphics in V2 - "Lee Braiden" (13)
> * libxemu for V2 ? - "Lee Braiden" (10)
> * Re: Using debug monochrome monitor with gdb - Eli Zaretskii
> (47)
> * Question: STRIP.EXE - amungal AT vnet DOT ibm DOT com (2)
> * Re: decreasing program loadup time - "A.Appleyard" (8)
> * HELP!!!! - Geoffrey Wong (31)
> * Re: Similar as UNIX sccs but for DOS?? - Leif Odmark (17)
> * Re: Getting the physical address of allocated virtual memory -
> Charles Sandmann (11)
> * Memory locking woes - Shawn Hargreaves (23)
> o Charles Sandmann (25)
> * new user - Royce E. Mitchell III (5)
> * Re: Running djgpp & djgdb under windows environment. - Royce E.
> Mitchell III (26)
> * Re: I look for the portage of turbo vision using the libgrx -
> Oliver Suciu (12)
> * Length of pointer & freezing machine - Nicholas Marrone (20)
> * Re: Natas - "J. A. McNamara" (17)
> * Re: Just installed DJGPP and I have some problems - "L. Michael
> Asher" (31)
> o Charles Sandmann (3)
> * Physical memory access? - Gert van Antwerpen (14)
> * Re: Graphics in V2 - wroberts AT aug DOT com (72)
> * Re: (none) - DJ Delorie (16)
> * Unix functions? - Geoffrey Wong (33)
> * Re: decreasing program lo - "Alexander V. Lukyanov" (7)
> * Just installed DJGPP and I have some problems - Martin Couture
> (20)
> * libgplus info files, version 1.12.maint3... - "Alaric B.
> Williams" (24)
> * Re: decreasing program loadup time - "Alexander V. Lukyanov"
> (18)
> * Re: decreasing program loadup time - DJ Delorie (22)
> o Charles Sandmann (16)
> * Re: Text editor that can look at and edit zipped files - Eli
> Zaretskii (9)
> * Re: DIFF's - Eli Zaretskii (11)
> * Xlibemu - Orlando Andico (14)
> * DIFF's - Orlando Andico (15)
> * Re: calling real-mode interrupt handler - Eli Zaretskii (13)
> * Re: V2.0:confused - Eli Zaretskii (6)
> * Re: Running djgpp 1.12m4 application under DOS 6.21 - Eli
> Zaretskii (8)
> * Re: GMAKE 3.71 Memory Leak? (Dos) - Eli Zaretskii (17)
>
> --------------------------------------------------------------------
>
> Newsgroup: comp.os.msdos.djgpp
>
> * Re: Which compile option for GCC ? - DJ Delorie (8)
> * DJGPP2.0 in windows NT - Gert van Antwerpen (21)
> * socket lib? - "Alexander V. Lukyanov" (7)
> * Re: (none) - Charles Sandmann (15)
> * wierd "bug" in my program? - A. Aue (136)
> o Erik Max Francis (27)
> * Re: zoneinfo ?? - DJ Delorie (7)
> * (none) - DJ Delorie (15)
> * Re: Stack size - Charles Sandmann (5)
> * coreleft() - "Alaric B. Williams" (13)
> * Re: Overlaying - "Alaric B. Williams" (27)
> * Re: Natas - "Lee Braiden" (6)
> * calling real-mode interrupt handler - Orlando Andico (32)
> * Re: Natas - juan j casero (7)
> * Re: Graphics in V2 - wroberts AT aug DOT com (27)
> * header file <math.h> - Hd (30)
> * SWORD - Orlando Andico (10)
> * Keyboard Handlers.. Argh! - battle DOT axe AT PEGASUZ DOT COM (20)
> * Building GCC, newbie questions - Kraig Hanson (17)
> * Natas - "A.Appleyard" (13)
> * Re: V2 questions - Charles Sandmann (30)
> * bash port? - "Alexander V. Lukyanov" (12)
> * Core files & V2 - Bill Currie (9)
> * Graphics in V2 - "Lee Braiden" (13)
> * libxemu for V2 ? - "Lee Braiden" (10)
> * Re: Using debug monochrome monitor with gdb - Eli Zaretskii
> (47)
> * Question: STRIP.EXE - amungal AT vnet DOT ibm DOT com (2)
> * Re: decreasing program loadup time - "A.Appleyard" (8)
> * HELP!!!! - Geoffrey Wong (31)
> * Re: Similar as UNIX sccs but for DOS?? - Leif Odmark (17)
> * Re: Getting the physical address of allocated virtual memory -
> Charles Sandmann (11)
> * Memory locking woes - Shawn Hargreaves (23)
> o Charles Sandmann (25)
> * new user - Royce E. Mitchell III (5)
> * Re: Running djgpp & djgdb under windows environment. - Royce E.
> Mitchell III (26)
> * Re: I look for the portage of turbo vision using the libgrx -
> Oliver Suciu (12)
> * Length of pointer & freezing machine - Nicholas Marrone (20)
> * Re: Natas - "J. A. McNamara" (17)
> * Re: Just installed DJGPP and I have some problems - "L. Michael
> Asher" (31)
> o Charles Sandmann (3)
> * Physical memory access? - Gert van Antwerpen (14)
> * Re: Graphics in V2 - wroberts AT aug DOT com (72)
> * Re: (none) - DJ Delorie (16)
> * Unix functions? - Geoffrey Wong (33)
> * Re: decreasing program lo - "Alexander V. Lukyanov" (7)
> * Just installed DJGPP and I have some problems - Martin Couture
> (20)
> * libgplus info files, version 1.12.maint3... - "Alaric B.
> Williams" (24)
> * Re: decreasing program loadup time - "Alexander V. Lukyanov"
> (18)
> * Re: decreasing program loadup time - DJ Delorie (22)
> o Charles Sandmann (16)
> * Re: Text editor that can look at and edit zipped files - Eli
> Zaretskii (9)
> * Re: DIFF's - Eli Zaretskii (11)
> * Xlibemu - Orlando Andico (14)
> * DIFF's - Orlando Andico (15)
> * Re: calling real-mode interrupt handler - Eli Zaretskii (13)
> * Re: V2.0:confused - Eli Zaretskii (6)
> * Re: Running djgpp 1.12m4 application under DOS 6.21 - Eli
> Zaretskii (8)
> * Re: GMAKE 3.71 Memory Leak? (Dos) - Eli Zaretskii (17)
>
> --------------------------------------------------------------------
>
> Newsgroup: comp.os.msdos.djgpp
>
> * Re: Which compile option for GCC ? - DJ Delorie (8)
> * DJGPP2.0 in windows NT - Gert van Antwerpen (21)
> * socket lib? - "Alexander V. Lukyanov" (7)
> * Re: (none) - Charles Sandmann (15)
> * wierd "bug" in my program? - A. Aue (136)
> o Erik Max Francis (27)
> * Re: zoneinfo ?? - DJ Delorie (7)
> * (none) - DJ Delorie (15)
> * Re: Stack size - Charles Sandmann (5)
> * coreleft() - "Alaric B. Williams" (13)
> * Re: Overlaying - "Alaric B. Williams" (27)
> * Re: Natas - "Lee Braiden" (6)
> * calling real-mode interrupt handler - Orlando Andico (32)
> * Re: Natas - juan j casero (7)
> * Re: Graphics in V2 - wroberts AT aug DOT com (27)
> * header file <math.h> - Hd (30)
> * SWORD - Orlando Andico (10)
> * Keyboard Handlers.. Argh! - battle DOT axe AT PEGASUZ DOT COM (20)
> * Building GCC, newbie questions - Kraig Hanson (17)
> * Natas - "A.Appleyard" (13)
> * Re: V2 questions - Charles Sandmann (30)
> * bash port? - "Alexander V. Lukyanov" (12)
> * Core files & V2 - Bill Currie (9)
> * Graphics in V2 - "Lee Braiden" (13)
> * libxemu for V2 ? - "Lee Braiden" (10)
> * Re: Using debug monochrome monitor with gdb - Eli Zaretskii
> (47)
> * Question: STRIP.EXE - amungal AT vnet DOT ibm DOT com (2)
> * Re: decreasing program loadup time - "A.Appleyard" (8)
> * HELP!!!! - Geoffrey Wong (31)
> * Re: Similar as UNIX sccs but for DOS?? - Leif Odmark (17)
> * Re: Getting the physical address of allocated virtual memory -
> Charles Sandmann (11)
> * Memory locking woes - Shawn Hargreaves (23)
> o Charles Sandmann (25)
> * new user - Royce E. Mitchell III (5)
> * Re: Running djgpp & djgdb under windows environment. - Royce E.
> Mitchell III (26)
> * Re: I look for the portage of turbo vision using the libgrx -
> Oliver Suciu (12)
> * Length of pointer & freezing machine - Nicholas Marrone (20)
> * Re: Natas - "J. A. McNamara" (17)
> * Re: Just installed DJGPP and I have some problems - "L. Michael
> Asher" (31)
> o Charles Sandmann (3)
> * Physical memory access? - Gert van Antwerpen (14)
> * Re: Graphics in V2 - wroberts AT aug DOT com (72)
> * Re: (none) - DJ Delorie (16)
> * Unix functions? - Geoffrey Wong (33)
> * Re: decreasing program lo - "Alexander V. Lukyanov" (7)
> * Just installed DJGPP and I have some problems - Martin Couture
> (20)
> * libgplus info files, version 1.12.maint3... - "Alaric B.
> Williams" (24)
> * Re: decreasing program loadup time - "Alexander V. Lukyanov"
> (18)
> * Re: decreasing program loadup time - DJ Delorie (22)
> o Charles Sandmann (16)
> * Re: Text editor that can look at and edit zipped files - Eli
> Zaretskii (9)
> * Re: DIFF's - Eli Zaretskii (11)
> * Xlibemu - Orlando Andico (14)
> * DIFF's - Orlando Andico (15)
> * Re: calling real-mode interrupt handler - Eli Zaretskii (13)
> * Re: V2.0:confused - Eli Zaretskii (6)
> * Re: Running djgpp 1.12m4 application under DOS 6.21 - Eli
> Zaretskii (8)
> * Re: GMAKE 3.71 Memory Leak? (Dos) - Eli Zaretskii (17)
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Hi,
I've been having a little trouble with the following routine which should
blitcopy a 64k buffer to vga mem (used in mode 13h). I have set it to
copy dwords, but this indiscriminately crashes my machine. The confusing
thing is that when I change it to copy the buffer with just word writes,
it works fine, although obviously a bit slower.
The only thing I can think of is it might be my video card - a poor 16 bit
ISA Trident TVGA. I believe there can be problems with 32 bit writes to
a 16 bit card. Can anybody shed some light on this ?
note: I'm using gcc v1 with the latest maintenance release.
0xd0000000 is where gcc maps the screen segment to.
void BlitBufferToVga (int * buffer) {
asm(".align 4 ");
asm("movl %0,%%esi ":: "g" (buffer) : "%esi");
asm("movl $0xd0000000,%%edi ":: : "%edi");
asm("movl $16000,%%ecx ":: : "%ecx");
asm("cld ");
asm("rep ");
asm("movsl (%%esi),(%%edi) ":: : "%esi","%edi");
}
PS: I know that an unrolled loop version will be faster, and I will do that
as soon as I understand what the problem with this version is.
I would be grateful if any help was emailed rather than posted.
Thanks
Marc
mc AT dstn24 DOT dct DOT ac DOT uk
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