Mail Archives: djgpp/1996/10/22/15:44:21
From: | oak9755 AT silver DOT sdsmt DOT edu (Olav Kindt)
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Newsgroups: | comp.os.msdos.djgpp
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Subject: | Re: Help with graphics and inline asm please.
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Date: | 22 Oct 1996 16:32:50 GMT
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Organization: | South Dakota School of Mines and Technology
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Lines: | 44
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Distribution: | world
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Message-ID: | <54isvi$4p8@news.sdsmt.edu>
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References: | <01bbc016$d29f7660$88015838 AT peterstb DOT usps DOT gov>
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NNTP-Posting-Host: | silver.sdsmt.edu
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To: | djgpp AT delorie DOT com
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DJ-Gateway: | from newsgroup comp.os.msdos.djgpp
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B. Peterson (bpeterson AT ntip DOT usps DOT gov) wrote:
: putpixel(int x, int y, int color)
: {
: short our_global_selector;
: our_global_selector = _dos_ds;
:
: __asm__ __volatile__("
: movw _our_global_selector, %es\n
: movl $0xA0000, %edi\n
: movw _y, %ax\n
: imulw $320, %ax\n
: addw _x, %ax\n
: addw %ax, %di\n
: movb _color, %al\n
: stosb"
: );
: }
:
Try this:
movw %0, %%es
movl $0xa0000, %%edi
movw %1, %%ax
imulw $320, %%ax
addw %2, %%ax
addw %%ax, %%di <= shouldn't this be edi
movb %3, %%al"
stosb"
: "g" (our_global_selector) "g" (y) "g" (x) "g" (color)
// These are 0, 1, 2, 3 respectively
);
I didn't compile this, but i shouldn't be to far away from the truth.
Check out the asm tutorial from the same source you referenced
in your original posting.
Hope it helps
--
Olav Kindt | email: oak9755 AT silver DOT sdsmt DOT edu
737 E. Anamosa Street #103 | xedb_oak AT debet DOT nhh DOT no
Rapid City SD-57701 | MAIL me man.......
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