Mail Archives: djgpp/1996/09/25/09:23:47
Tom Sgouros <tomss AT ids DOT net> wrote:
>Stupid question,
Not really!
> but I have to ask it for clarity: Is this true no matter
>how many MHz your PC is running at?
Yes; it's a different clock altogether (the PC's MHz clock is, also, a
clock, but usually referred to as something like the CPU clock or bus
clock to avoid confustion :-)
>> P.S. Before anyone argues my numbers, note that this is based on the
>> FAQ of 0x1800b0 tics per day, and the counter is reprogrammed for mode
>> 2 operation.
>Do you have a reference where I can learn more about these modes and FAQs?
>(This is not FAQ=Frequently Asked Question?)
Try looking for the PC Games Programmer's Encyclopaedia (these things
are important to games programmers above all, and you'll probably find
some other interesting tidbits!). Erm... search around x2ftp,oulu.fi
for pcgpe10.zip, or use good 'ol Archie to find that filename.
>Many thanks for your reply. This has been a quite confusing issue for me.
Enjoy your entry into the world of PC hardware :-)
I've an old library I wrote for TC++ (read: real mode) which deals
with most of the PC's support chipset, if you want reference code.
Nearly all of it, except for the DMA routines and interrupt routines,
will work directly with DJGPP. I will probably port the interrupt
controller bits to DJGPP and put them in libints for the general
public enjoyment.
No, I haven't forgotten about libints! Version 2 is fast becoming
vapourware, but in a few week's time, I'll have got university
application out of the way, and will have signficant spare time again!
Regards,
ABW
---
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Alaric B. Williams Internet : alaric AT abwillms DOT demon DOT co DOT uk
<A HREF="http://www.abwillms.demon.co.uk/">Hello :-)</A>
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