Re: A83: Re: Assembly instructions
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Re: A83: Re: Assembly instructions
tst on the x86 is an and instruction that doesn't change any registers but
the flag register (like cp is to sub). Not that tst does anything on the z80
:P it is only for the z180!
Joe Wingbermuehle
http://www.usmo.com/~joewing/
-----Original Message-----
From: Linus Akesson <lairfight@softhome.net>
To: Phelan Wolf <assembly-83@lists.ticalc.org>
Date: Thursday, October 08, 1998 3:57 PM
Subject: Re: A83: Re: Assembly instructions
>
>On 07-Oct-98, Phelan Wolf wrote:
>
>>>>>>SLP
>>>>
>>>>silent linking protocol(?)
>>>
>>>What is silent linking?
>
>>like what the graph link does, it may be an internal routine to access
>>the link port while on the home screen
>
>lol.. yeah right, as a processor instruction! =)
>My guess: shift left through p/v flag. (?)
>
>>>
>>>>
>>>>>>TST
>>>>
>>>>test
>>>
>>>For what?
>
>>no clue, I guessed
>
>probably like a "cp 0".
>
>Linus
>
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