A83: Re: your mail

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A83: Re: your mail


If you want a loop which takes much time and not much memory,
just make some calls to _grbufcpy_v

/Stefan

On Thu, 9 Jul 1998, Alan C Johnson wrote:

> 
> I'm updating my first ASM progie and I need a little help so I have a few
> questions
> 
> 	1.  I need an almost 1/2 second delay that doesn't take up much
> space.  See my 		current pathetically inefficient current
> delay below.  It takes up most of the 		program.
> 	2.  How do you get string input?   (It can be done e.i. Password)
> 	3.  How do you store string input anywhere accept a user
> variavble?  (It can be done, 		also; same example)
> 	4.  How do you get pixel legnth for a variable legnth string?  (I
> don't know if it can be 		done without too much memory
> usage)
> 
> 
> 
> My LOOOOOOOOONNNNGGGG delay loop
> 
> KeyDelay:			; This is very inneficient but
> 	call	ReadEnter	; it was the only way to get
> 	cp	kEnter		; it to a good speed
> 	jp	z,exit		;
> 	nop			; This accounts for a lot of
> 	push	hl		; space this prog takes up
> 	pop	hl
> 	push	hl
> 	pop	hl
> 	push	hl
> 	pop	hl
> 	push	hl
> 	pop	hl
> 	push	hl
> 	pop	hl
> 	push	hl
> 	pop	hl
> 	push	hl
> 	pop	hl
> 	djnz	KeyDelay
> 	ld	b,250
> KeyDelay2:
> 	call	ReadEnter
> 	cp	kEnter
> 	jp	z,exit
> 	nop
> 	push	hl
> 	push	hl
> 	pop	hl
> 	push	hl
> 	pop	hl
> 	pop	hl
> 	push	hl
> 	pop	hl
> 	push	hl
> 	pop	hl
> 	push	hl
> 	pop	hl
> 	push	hl
> 	pop	hl
> 	djnz	KeyDelay2
> 	ld	b,250
> KeyDelay3:
> 	call	ReadEnter
> 	cp	kEnter
> 	jp	z,exit
> 	nop
> 	push	hl
> 	pop	hl
> 	push	hl
> 	pop	hl
> 	push	hl
> 	pop	hl
> 	push	hl
> 	pop	hl
> 	push	hl
> 	pop	hl
> 	push	hl
> 	pop	hl
> 	push	hl
> 	pop	hl
> 	djnz	KeyDelay3
> 	ld	b,250
> KeyDelay4:
> 	call	ReadEnter
> 	cp	kEnter
> 	jp	z,exit
> 	nop
> 	push	hl
> 	pop	hl
> 	push	hl
> 	pop	hl
> 	push	hl
> 	pop	hl
> 	push	hl
> 	pop	hl
> 	push	hl
> 	pop	hl
> 	push	hl
> 	pop	hl
> 	push	hl
> 	pop	hl
> 	djnz	KeyDelay4
> 	ld	b,250
> KeyDelay5:
> 	call	ReadEnter
> 	cp	kEnter
> 	jp	z,exit
> 	nop
> 	push	hl
> 	pop	hl
> 	push	hl
> 	pop	hl
> 	push	hl
> 	pop	hl
> 	push	hl
> 	pop	hl
> 	push	hl
> 	pop	hl
> 	push	hl
> 	pop	hl
> 	push	hl
> 	pop	hl
> 	push	hl
> 	pop	hl
> 	djnz	KeyDelay5
> 	ld	b,250
> KeyDelay6:
> 	call	ReadEnter
> 	cp	kEnter
> 	jp	z,exit
> 	nop
> 	push	hl
> 	pop	hl
> 	push	hl
> 	pop	hl
> 	push	hl
> 	pop	hl
> 	push	hl
> 	push	hl
> 	pop	hl
> 	push	hl
> 	pop	hl
> 	pop	hl
> 	push	hl
> 	pop	hl
> 	push	hl
> 	pop	hl
> 	djnz	KeyDelay6
> 	jp	Loopstart
> 
> 
> -----------------------------------------------------------------------------------------------------------------------
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References: