Assembly question

[slenkar]

thanks,

I made this little program to draw on each line going down the screen but it didnt look like I expected

Code:

function FASTCALL drawthis() as ubyte
asm
LD HL,16384
LD BC,20

drawblokes:
INC H
LD (HL),254
DEC BC
LD A, B  
OR C    
JP NZ,drawblokes
    end asm
end function

drawthis()
Print "done"

it just draws a couple of blobs to the screen

I am using INC H to go down the screen
using BC as a 16 bit counter

Loading 254 into screen memory each time