Re: A86: can anyone tell me what this does?

To: <assembly-86@lists.ticalc.org>
Subject: Re: A86: can anyone tell me what this does?
From: "Dux Gregis" <assets@eden.rutgers.edu>
Date: Thu, 3 Dec 1998 21:02:36 -0500
Delivered-To: assembly-86-outgoing@towerguard.unix.edu.sollentuna.se
Reply-To: assembly-86@lists.ticalc.org



this will be a little faster if you change the inc hl to inc l


>
>I think what its doing is shifting each bit in the display right, into
>nothing. Neat effect when you've got a lot of stuff on the screen!
> 
>> If any of you understand this please comment it
>> 
>> 
>>  ld b,8
>> loop1:
>>  push bc
>>  ld hl,$FC00
>>  ld b,255
>> loop11:
>>  srl (hl)
>>  inc hl
>>  djnz loop11
>>  ld b,255
>> loop12:
>>  srl (hl)
>>  inc hl
>>  djnz loop12
>>  ld b,255
>> loop13:
>>  srl (hl)
>>  inc hl
>>  djnz loop13
>>  ld b,255
>> loop14:
>>  srl (hl)
>>  inc hl
>>  djnz loop14
>>  ei
>>  ld b,6
>> del_loop
>>  halt
>>  djnz del_loop
>>  di
>>  pop bc
>>  djnz loop1
>> 
>
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