> What is the fastest way to clear a 640x480, 16 color screen in TP 6.0 ?
> I usually use the 'Cleardevice' command, but I find it quite slow.
> I mean if my program works more than six times faster if I leave the command
> out, I think it can be called slow :)
> (I have to confess that I have a rather slow Video Card)

> Should I use a bit of assembler code to clear it ? Something like MOV
> $A000:0000+t,0 ?
> I don't use assembler very often, but I do know a little bit about it.

> Or is there some interrupt that I can call ? If so, is this universal for all
> graphics cards ?

> Or is there some other way ?

> Thanks in advance,

> --
> Martijn v.d. Horst

>you could use fillchar

>e.g.

>in 320x200x256 mode

>fillchar(ptr($a000,0),64000,0);

>Martijn v.d. Horst wrote:

>> Hello,

>> What is the fastest way to clear a 640x480, 16 color screen in TP 6.0 ?
>> I usually use the 'Cleardevice' command, but I find it quite slow.
>> I mean if my program works more than six times faster if I leave the
>command
>> out, I think it can be called slow :)
>> (I have to confess that I have a rather slow Video Card)

>> Should I use a bit of assembler code to clear it ? Something like MOV
>> $A000:0000+t,0 ?
>> I don't use assembler very often, but I do know a little bit about it.

>> Or is there some interrupt that I can call ? If so, is this universal for
>all
>> graphics cards ?

>> Or is there some other way ?

>> Thanks in advance,

>> --
>> Martijn v.d. Horst

>Hello,

>What is the fastest way to clear a 640x480, 16 color screen in TP 6.0 ?
>I usually use the 'Cleardevice' command, but I find it quite slow.
>I mean if my program works more than six times faster if I leave the command
>out, I think it can be called slow :)