Re: A83: Re:

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Re: A83: Re:


	Hey I'm new to this stuff also, but i noticed that your delay loop was a hell
of a lot shorter than Alan's... it probably helped him a whole lot, but can
you explain to me what "nop" does and why you had to load "b" just before
that, and also what the "djnz" does, just give it all to me... im learning
little by little, but hey.


Jason Kovacs
<jkhum98@aol.com>



>hahaha :)  that is a great delay routine... here, try this.  There is also

>one in bounce.asm in the pub/83/asm/source directory of ticalc.org.

>

> ld b,20

>Loop:

> nop

> djnz Loop

>

>you could also increase the 20.. and you could replace nop with halt.

>                                                                            

>       -Ahmed

>

>-----Original Message-----

>From: Alan C Johnson <benjamin99@juno.com>

>To: assembly-83@lists.ticalc.org <assembly-83@lists.ticalc.org>

>Date: Thursday, July 09, 1998 9:25 PM

>

>

>>

>>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

>>

>>

>>------------------------------------------------------------------------

>>Mastermind--benjamin99@juno.com, www.bigfoot.com/~mastermind5

>>IRC: Master_M

>>ICQ: 11341114

>>-Its all about the Benjamins

>>

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