Re: A83: finally ...

To: assembly-83@lists.ticalc.org
Subject: Re: A83: finally ...
From: Linus Akesson <lairfight@softhome.net>
Date: Tue, 27 Apr 1999 00:18:58 +0100
Delivered-To: assembly-83-outgoing@towerguard.unix.edu.sollentuna.se
Delivered-To: assembly-83@lists.ticalc.org
In-Reply-To: <19990426203235.46032.qmail@hotmail.com>
Reply-To: assembly-83@lists.ticalc.org


On 26-Apr-99, you wrote:

> Hi
> again
> Remember me... I while ago I was trying to make an input routine that read more than one key and in different groups ...... after a lot of copying from other people (credits ...... )  I have finally made it .... 

> Here it is 2nd Alpha + Arrows simultaneousely ....

> in a simple well organised form

aAAAAAAAAAAAAAAAAAAAAAAAggh!

Sorry.

Why not:

            ld a,dfh
            out (1),a
            in a,(1)    ;alpha is bit 7
            or 01111111b
            ld l,a

            ld a,bfh
            out (1),a
            in a,(1)    ;2nd is bit 5
            or 11011111b
            and l
            ld l,a

            ld a,feh
            out (1),a
            in a,(1)    ;arrow keys are in bits 0-3
            or 11110000h
            and l
            ld l,a

            cpl

Now you have bits 0-3 in l for the arrow keys, bit 7 for alpha and bit 5 for
2nd. You can check them like this:

            bit 0,l
            call nz,downpressed
            bit 1,l
            call nz,leftpressed
            bit 2,l
            call nz,rightpressed
            bit 3,l
            call nz,uppressed
            bit 5,l
            call nz,secondpressed
            bit 7,l
            call nz,alphapressed


(and that's the _unoptimized_ version...)

Linus
-- 
                                                           wwww 
                                                          (o)(O)
.-->                                           .-------mm--(__)--mm--------.
| Linus Akesson                                | http://linusworld.cjb.net |
`---------------^-- ----- --- --  -- -  -   -  `---------ooO--Ooo----------'
               Here I am. Now what are your other two wishes?

References:

A83: finally ...

From: "the homonerdicus" <bomber912@hotmail.com>