Re: modey vs 13h

Thread View: rec.games.programmer

4 messages

[T] Back to Threads [V] Tree View [G] Group Articles

4 total messages Started by Cyberman Sun, 09 Aug 1992 19:31

#533

Author: Cyberman
Date: Sun, 09 Aug 1992 19:31

38 lines
2034 bytes

     -=> Sl8nl@cc.usu.edu spoke of "Re: modey vs 13h" <=-
    To All at 08-08-92  19:13
 Sl> I'm disappointed in you...you never thought of that!!! :) (just

Hey I haven't had a VGA board for more than 2 weeks!  I don't
even have a programing book.  All my experience has been is HIGH
level [BGI].  However I can write a custome BGI driver to support
such things.  I like the concept of mode X, and using video
memory instead of computer memory.  :)

 Sl> kidding). On something like that, it would work.  If you were writing a
 Sl> Duke Nukum game, the setting would be perfect for this...only they
 Sl> would have more than pages 1-4 to work with (lessee, 320x200=64000/2
 Sl> pixels per byte, 32000, 256000/32000 = 8 pages).  On the EGA, this
 Sl> works well...they have double the storage.

actually triple since you really only need 2 pages to buffer.

 Sl> Now, Commander Keen on a VGA (if it were VGA) could only have 2 pages.
 Sl> Period.  In fact, there would be no room in VGA memory after this
 Sl> (i.e. you have to have something to pan onto...I've written something
 Sl> like this before).  However, on an EGA...you would have your 2
 Sl> scrolling pages, and 4 more pages on top of that!!!

Hmmm unless your memory is >512k

I think we need to put the complete register set of the VGA and
EGA cards in the GAMES.IBM.FAQ, as well as some short examples.
Also see if any AMIGA programers out thier are willing to
contribute the specifics of their hardware as well.  Mac's too.

        Stephen Cyberman@Toz.Buffalo.NY.US
        Scripted at Sun  08-09-1992  12:29:49

... I can't find the DING.BAT file
--- Blue Wave/QWK v2.10

Re: modey vs 13h

#536

Author: sl8nl
Date: Mon, 10 Aug 1992 03:10

29 lines
1914 bytes

> I think we need to put the complete register set of the VGA and
> EGA cards in the GAMES.IBM.FAQ, as well as some short examples.
> Also see if any AMIGA programers out thier are willing to
> contribute the specifics of their hardware as well.  Mac's too.

I see a potential problem there in that I have a VGA shareware manual...
and the complete description of the register set is around 550k!!!
(And that doesn't include the 4 chapters the guy left out so the file
would be downloadable!)

I still prefer the Blitter Chip...

Then again...I just saw the Cronolog demo.  Blew my socks off.  As many of you
know, I have written an interrupt-driven Amiga module player on the IBM; it
pumps out one byte each interrupt call.  This resulted in SLOOOOWWWWW system
access.  In fact, since IRQ 08 is a priority interrupt, the system slowed 
down to 1/4 "impulse" (sometimes less, depending on the module).  Next,
I just finished writing a DMA based module player...for any sound card 
capable of digitized output through the DMA.  That opened up plenty of
system, enough now to be bearable in programming.

OK, my point is, at least as far as I can tell, the Cronolog demo played it
the byte way, not through the DMA.  I figured no way.  But it's true!  They can
play through the Covox, the Soundblaster, the internal speaker, a DAC.  The
Soundblaster is the only one that can use DMA out of the above, but it doesn't
appear that they do.  I can see pulling the graphics off at such high speeds,
but graphics and sound?

Josh

Re: modey vs 13h

#539

Author: Stuart Woolford
Date: Mon, 10 Aug 1992 05:03

17 lines
1097 bytes

sl8nl@cc.usu.edu writes:

>I see a potential problem there in that I have a VGA shareware manual...
>and the complete description of the register set is around 550k!!!
>(And that doesn't include the 4 chapters the guy left out so the file
>would be downloadable!)

could you possible make it available ( anon ftp on wuarchive, etc ) if
it is shareware ( or is it already ), I would be very interested ( but mail
costs me 10X as much as ftp B-(
)
-----------------------------------------------------------------------------
stuartw@ccu1.aukuni.ac.nz


			>>>>In VI Where Available<<<<
-----------------------------------------------------------------------------

Re: modey vs 13h

#540

Author: Peter SPHINX Cellik
Date: Mon, 10 Aug 1992 08:02

19 lines
994 bytes

In article <gate.V489oB1w165w@toz.buffalo.ny.us>, cyberman@toz.buffalo.ny.us (Cyberman) writes:
|> 
[stuff deleted]
|> 
|> I think we need to put the complete register set of the VGA and
|> EGA cards in the GAMES.IBM.FAQ, as well as some short examples.
|>                         
[stuff deleted]

YES YES YES!!!

     SPHINX


====================================================
=== Kill others only if you wish to be killed.   ===
===                                       SPHINX ===   
====================================================

Thread Navigation

This is a paginated view of messages in the thread with full content displayed inline.

Messages are displayed in chronological order, with the original post highlighted in green.

Use pagination controls to navigate through all messages in large threads.

Back to All Threads