Mail Archives: djgpp/1997/06/24/20:49:41
from: csantill AT lausd DOT k12 DOT ca DOT us
I have more than a few questions so any help would be much obliged.
1) How can I setup RHIDE 1.3 to output the compiled *.O's & *.EXE's to the
same directory as the source file(*.C)?
2) How different is DJ Pascal from TP/BP 7.0? Are there many
incompatible/unsupported keywords? Are there any extensions? Is it easy
to wrap DJ Pascal around ASM?
I want to write my own graphics library for VGA & VESA graphics library
w/accompanying Mouse & Joystick libraries. The reason I switched to DJGPP
is because the 32-bit protected mode & promise of better speed for games &
graphics. I'm too stubborn to learn even remotely complicated graphics
systems like BGI & Allegro so would rather just write my own.
3A) I'd like to write these library functions mostly in C, Pascal, & ASM.
I'm used to Borland style C & Pascal so I like using Intel ASM. Is there a
way to setup RHIDE 1.3 to default to compiling Intel ASM? If not, where is
the most complete tutorial on learning the difference & translation of
Intel ASM to AT&T ASM? Here's an example of the kind of stuff I want to
do.
char Circle(int x, int y, int r, char c) Circle(Integer
x,y,r; Byte c)
{
Begin
While(!N)
While(N=False) Begin
{
asm
asm
{
{
; Do calculations
; Do calculations
};
}
GoSetPixIfNecessary;
GoSetPixIfNecessary; End;
}
}
3B) I'm not used to Protected mode Memory access, so what the easiest way
to *poke* byte values into memory w/ or w/o memory protection?
3C) What's the easiest way to call 16-bit interrupts(like the mouse, &
VGA) & 32-bit interrupts(like VESA), thru one of the protected mode
functions or thru ASM?
3D) Can you call 32-bit interrupts w/ the built in inline ASM calls?
4) I'm interested in porting some ZIP, TAR, GIF87/89, JPG, BMP, & Huffman
compression file filters but I have problem. Some of these formats use bit
compression. Is there a built in function to test individual bit in a
byte, word, & dword? Is there a work around? Here's what I'd like the
function to do(Pascal example).
Return of function(possible err)--+
Check if it's this value(0-1)-+ |
The Bit # to Test(0-7)-+ | |
The Byte to Test---+ | | |
\|/ \|/ \|/ \|/
TestByteBit(Byte B, Bit, Test):Byte
Sorry if this stuff seems redundant to the list but I would truly like to
take full advantage of DJGPP.
Thanx in advance
eLpEE
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