Re: A86: version

To: <assembly-86@lists.ticalc.org>
Subject: Re: A86: version
From: "David Phillips" <electrum@tfs.net>
Date: Sat, 21 Nov 1998 15:23:40 -0600
Delivered-To: assembly-86-outgoing@towerguard.unix.edu.sollentuna.se
Reply-To: assembly-86@lists.ticalc.org


Does anyone know how fast those calls are?  I'd think that flipping pages or
even calling something on page 0 would be slower than doing it yourself.
And it's only 4 bytes, versus 3 for a call.  You could even make into a
macro (since it's silly to use a 3 byte call for a 4 byte routine, where the
call/ret takes 3 t-states more than the whole routine), or play with
tasm80.tab to make it exactly like an actual instruction...

ld_hlhl:
 ld a,(hl)
 inc hl
 ld l,(hl)
 ld h,a    ; 24 t-states

-----Original Message-----
From: Dux Gregis <assets@eden.rutgers.edu>
To: assembly-86@lists.ticalc.org <assembly-86@lists.ticalc.org>
Date: Friday, November 20, 1998 9:13 PM
Subject: Re: A86: version


>
>
>>
>>don't think so.  i can think of one good way of getting that, although
>>you really shouldn't need it:
>>
>> ld hl,(_ask_self_text+1) ;$494f+1
>> ld de,11 ;offset to address in a ld hl,xxxx inst.
>> add hl,de
>> call _ldhlhl ;$4010 may be wrong in some include files aka LD_HL_MHL
>
>I think the official equate (ie, TI's equate) is _ldhlind, but call $33 is
>faster than using page $0d (it's very unlikely to change in future roms)
>
>>
>>hl now points to the string
>>"Enter self test?     1.x   ",0
>>
>>that should work in any version, but no guarantee because it relies on
>>page 0
>>
>>-josh
>>
>>On Fri, 20 Nov 1998 17:09:45 -0800 Cassady Roop <croop@oregontrail.net>
>>writes:
>>>
>>>Is there a call that will output the ROM version but not give the
>>>option
>>>of a self-test?
>>>
>>
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