Re: A86: a couple questions that have been building up...

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Re: A86: a couple questions that have been building up...



On Mon, 22 Jun 1998 16:09:14 -0600 Dux Gregis <assets@eden.rutgers.edu>
writes:
>
>
>
>rabidcow@juno.com wrote:
>
>> On Sun, 21 Jun 1998 21:41:28 EDT ComAsYuAre@aol.com writes:
>> >
>> >In a message dated 6/20/98 4:39:44 PM Eastern Daylight Time,
>> >rabidcow@juno.com
>> >writes:
>> >
>> >>         ld a,$0c
>> >>          ld (_asap_ind),a
>> >>          call _exec_pg3
>> >>
>> >>          rst 10h ;findsym
>> >>          ;bde->wlstring
>> >>          ld a,b
>> >>          ld h,d
>> >>          ld l,e
>> >>          call _load_ram_ahl
>> >
>> >
>> >what does _load_ram_ahl do?
>>
>> it loads the page that the absolute address in ahl is on and make hl
>> point to the right place.  ick, it converts an absolute address in 
>ahl to
>> a normal address in hl
>> i think it's in ti86abs.inc
>>
>> >how do i get the string into an OP?  (or more than one or however 
>many
>> >it
>> >needs)
>>
>> this will copy the entire string to start at _OP1.  i would suggest 
>using
>> somewhere else, though 'cause it might overflow
>>         ld c,(hl)
>>         inc hl
>>         ld b,(hl)
>>         inc hl
>>         ld de,_OP1
>>         ldir
>
>If you want to use _OP1 calls with this string, it won't work, you'll 
>have to
>ld c into the first byte of _OP1 and then the string.
>    I'm having the same problem with something I'm working on.  I want 
>to
>input a string and then name a variable with that inputted string.  
>There's
>probably a different (better) input string routine to use, like the 
>one that
>only inputs 8 chars when naming a variable.  But, if you can find the 
>bug in
>this code, I would appreciate it.
>
> call _homeup
> ld de,_ioPrompt
> ld hl,prompt
> call _mov10B                ;move to prompt buffer
> call _mov10B
> ld hl,(_CLEANTMP)
> push hl                             ;save _cleantmp
> ld hl,(_PTempCnt)
> ld (_CLEANTMP),hl
> ld a,$0c                         ;value for input str
> ld (_ASAP_IND),a
> call _exec_pg3                ;input the string

move these two down there
---> pop hl
---> ld (_CLEANTMP),hl   ;put _cleantmp back
> rst 10h                         ;find string in new variable
> ld a,b                         ;ld ahl,bde
> ld h,d
> ld l,e

also, the length byte for a variable name goes in _OP1+1, _OP1 holds the
type byte

why are you using absolute addresses so much?
this finishes what your code did without so much abs addr work:

     call _load_ram_ahl

     ld a,(hl)			;copy to op1
     rst 20h
     ld (_OP1+1),a

<--- move those two to here. (or at least after the "rst 10h")

> ld hl,data_length
> push hl
> call _CREATESTRNG
> ld a,b                             ;ld ahl,bde
> ex de,hl

     call _load_ram_ahl
     inc hl
     inc hl

     pop bc			;new string's size

     ld de,source		;data to be loaded into new 
     ex de,hl

     ldir

ok, maybe if the string runs over a page boundary, then you'd have to use
abs addr stuff.  unless you switched _load_ram_ahl with one of those
deals that loads two ram pages at once...  maybe: (might work, might not,
anyone wanna test it?)
     call _load_ram_ahl
     out ($05),a
     inc a
     out ($06),a
     res 7,h
     set 6,h

and end with
     out ($05),$0d

-josh


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