Re: A83: Questions for Pat.

To: James Matthews <assembly-83@lists.ticalc.org>
Subject: Re: A83: Questions for Pat.
From: Linus Akesson <lairfight@softhome.net>
Date: Tue, 20 Oct 1998 19:03:57 +0100
Delivered-To: assembly-83-outgoing@towerguard.unix.edu.sollentuna.se
In-Reply-To: <199810201303.WAA18201@tkb.att.ne.jp>
Reply-To: assembly-83@lists.ticalc.org

On 20-Oct-98, James Matthews wrote:

>_PRINTSCREEN       equ           4DDEh

This one is sending something over the link port.

>_strCat

There is a routine called _strCopy which copies bytes from hl to de until a
null byte is encountered. What _strCat does is that it increments de until it
points to a null byte, and then it jumps to _strCopy. So yes, it's a bit like
strcat in C; you have to have enough space allocated past the first string.

>I'd also like to know how to change/detect screen modes (full/split
>horiz/split vert).

There are some documented flags on this.

Linus

References:

A83: Questions for Pat.

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