Path: news1.icaen!news.uiowa.edu!uunet!ffx.uu.net!hermes.visi.com!news-out.visi.com!cam-news-hub1.bbnplanet.com!news.gtei.net!newsfeed.mathworks.com!news.maxwell.syr.edu!nntp2.deja.com!nnrp1.deja.com!not-for-mail
From: Date Doctor - the best y2k fix <datedoctor@my-deja.com>
Newsgroups: comp.sys.apple2.programmer
Subject: Re: 6502 assembler
Date: Thu, 30 Sep 1999 21:35:12 GMT
Organization: Deja.com - Before you buy.
Lines: 42
Message-ID: <7t0l2g$m5j$1@nnrp1.deja.com>
References: <4iVF3.2276$QJ.87287@typ11.nn.bcandid.com> <7sc1ps$c8l$1@news.rt66.com> <nBqG3.5395$QJ.348980@typ11.nn.bcandid.com> <37ED98A4.8E434651@plano.net> <7sot34$2db$1@nnrp1.deja.com> <1dyvc4q.1hrmrbg68993gN@dempson.actrix.gen.nz> <7su1mj$os3$1@nnrp1.deja.com> <1dyz220.ybj8f2hya3jsN@dempson.actrix.gen.nz>
NNTP-Posting-Host: 202.27.194.58
X-Article-Creation-Date: Thu Sep 30 21:35:12 1999 GMT
X-Http-User-Agent: Mozilla/4.61 [en] (Win95; I)
X-Http-Proxy: 1.0 x36.deja.com:80 (Squid/1.1.22) for client 202.27.194.58
X-MyDeja-Info: XMYDJUIDdatedoctor
Xref: news1.icaen comp.sys.apple2.programmer:10915

In article <1dyz220.ybj8f2hya3jsN@dempson.actrix.gen.nz>,
  dempson@actrix.gen.nz (David Empson) wrote:

> The key point you are probably missing is that no instruction
implements
> every addressing mode, and most of them have only a small selection.

I am of course aware of this obvious fact...

> Some closely related instructions are STZ (4 opcodes), BIT (5
opcodes),

ah, that's where I remember Z from...

well anyway, heres a small piece of code for sound
if I remember rightly if you have a basic program with the following
10 CALL 768 : GOTO 10
it will play what you press on the keyboard

]CALL-151
*!
!300: LDY $C000
! TYA
! TAX
! INX
! BNE $0305
! STA $C030
! INY
! BNE $0303
! RTS

regards
Lance
--
Date Doctor is a new / proactive y2k fix
Ask for it by name...
It is the only fix that can apply to all PC's - all other fixes
are limited to only some/most PC's.  It is totally software based.


Sent via Deja.com http://www.deja.com/
Before you buy.