A86: Re: BASIC & inverts! HELP!

To: <assembly-86@lists.ticalc.org>
Subject: A86: Re: BASIC & inverts! HELP!
From: "David Phillips" <david@acz.org>
Date: Wed, 24 Mar 1999 14:05:11 -0600
Delivered-To: assembly-86-outgoing@towerguard.unix.edu.sollentuna.se
Delivered-To: assembly-86@lists.ticalc.org
References: <19990323.200302.9087.0.Ziggy2282@juno.com>
Reply-To: assembly-86@lists.ticalc.org


To call an asm program from a basic program, use the Asm( command, like
normal.  You could make the command into an ASAP token (like Stat/Financial
add-ons or the basic enhancement pack Keith Batten made), but would be much
more work than needed for this.

All you need is a little program to invert the inverse text flag:

 ld hl,$c3ea
 ld a,8
 xor (hl)
 ld (hl),a

Every time this is run, it will switch text printing between regular and
inverted.  (of course, this program's more fun:
3E0121EEC3AE773E4021FDC3AE77C9 :)

> HELP!  I'm trying to write an ASM prog that can be used to do inverted
> text in basic.  It's supposed to look for the line
>
> :invert
>
> in a BASIC prog and invert all pixels after that point.
> To end it, you would put the command again...how do I make the asm read
> for that line in a basic prog?

References:

A86: BASIC & inverts! HELP!

From: Nicolas P Zagorin <ziggy2282@juno.com>