Re: A82: How to use _GRBUFCPY_V with ash ?

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Re: A82: How to use _GRBUFCPY_V with ash ?

Since ShowPic needs to show the pictures really fast, the build in rutine
was to slow, 
therefore i made my own which is faster. Sam Davies made one which is even
faster, I do
not know wheter the put this function any where, put it i fast.  If speed
as not that
important you can used the build in function (see my other mail for info
on how to do this)

Dines


_______________________________________

Dines Justesen
Email: dines@post1.com or
       c958362@student.dtu.dk
WWW  : http://www.gbar.dtu.dk/~c958362/
_______________________________________

On Mon, 11 Aug 1997, Andrew Von Dollen wrote:

> At 01:55 AM 8/12/97 +0200, you wrote:
> >Tell me if I'm wrong,
> >I think that _GRBUFCPY_V can be use by:
> >	1-putting some bits into the graph_mem memory
> >	2-make a ROM_CALL to put the graph_mem to screen
> >Can Someone give me an example of how to use _GRBUFCPY_V with ash ?
> >What is the address in rom to call ?
> >I have a ROM v18.
> >(I'd like to make some black rectangles on the screen very fast,I've
> >tried Point_on but it is very slow)
> 
> There are a few examples of how to do this with Ash.  This bit of code came
> from ShowPic, included in the ash zip.
> 
> CopyGraph:              ; Copies graph mem, $88B8, to the LCD very quickly!
>         DI
>         LD HL,$88B8     ; The address of graph memory
>         LD A,7
>         CALL $7F3
>         OUT ($10),A
>         LD A,$80
> LineLoop:
>         LD D,A          ; Save currect coloum
>         CALL $7F3
>         OUT ($10),A
>         LD A,$20        ; Goto top
>         CALL $7F3
>         OUT ($10),A
>         LD BC,$0C11     ; 40 bytes to port 10
> WriteLoop:              ; Write them
>         NEG
>         NEG
>         NEG
>         NEG
>         OUTI
>         JR NZ,WriteLoop
>         LD A,D
>         INC A
>         CP $C0
>         JR NZ,LineLoop
>         EI
>         RET
> 
> If you want to put graphics more than one or two pixels in width or height
> onto the screen, you should probably investigate one of the sprite routines
> available in the source already released for Ash or OShell. Alien.asm
> (although it is for OShell, the sprite routine can be used with no or
> extremely minor changes) contains a nice one originally written by Jimmy
> Mardell for ZShell (It is called PutSprite).
> 
> 	-Andrew
> 
>
References: