Re: A83: Writing to Y1.

To: James Matthews <assembly-83@lists.ticalc.org>
Subject: Re: A83: Writing to Y1.
From: Linus Akesson <lairfight@softhome.net>
Date: Sun, 04 Oct 1998 14:56:22 +0100
Delivered-To: assembly-83-outgoing@towerguard.unix.edu.sollentuna.se
In-Reply-To: <199810041150.UAA00577@tkb.att.ne.jp>
Reply-To: assembly-83@lists.ticalc.org

On 04-Oct-98, James Matthews wrote:

>> You could look it up, _delmem what's in it, _insertmem as much as you need,
>> copy the stuff there, mark all used variables as graph-referred and update
>the
>> size-word in the beginning of the variable.

>Right...perhaps a further explanation? =)...

>Thanks,

>James.

Set OP1 to the name of equation Y1 (explained in tokens.inc), call
_chkfindsym, get  the size of the variablle (word pointed to by de), put the
size in hl and the address of the data after the size word (was: de+2), call
_delmem. Then use the same de, set hl to the size of your equation, call
_insertmem. Then ldir your equation into the newly allocated memory. Write the
size of your equation into the first two bytes of the data (2 bytes before
what you ldir:ed). If your equation uses other variables than x, look up the
symtab entry for each one of them and set the graphref bit.

Linus

References:

Re: A83: Writing to Y1.

From: "James Matthews" <matthews@tkb.att.ne.jp>