[A83] Re: Quick quistion about djnz

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[A83] Re: Quick quistion about djnz


hehe...
hacking ... I do as in messing around with computers and my calculator...
not as the sense of craker.... wich is creating damge..
plus the address... while I was signing up on hotmail... my friend typed
that when I wasn't looking... and I didn't notice that he did...so that is
my address now...

----- Original Message -----
From: "Ronald Teune" <rtwolf@gmx.net>
To: "Assembly 83" <assembly-83@lists.ticalc.org>
Sent: Monday, November 19, 2001 4:39 PM
Subject: [A83] Re: Quick quistion about djnz


>
> From: Nicolas Gilles <kingofhackers2K@hotmail.com>
>
> Hacking must be cool...
>
> >From: "Ronald Teune" <rtwolf@gmx.net>
>
> >
> >
> >>
> >> >> >well in a way, all of these instructions aren't stored in ram.
> >> >> >
> >> >> >if it was stored in ram we would have a much larger area to work
> >> >>with(well,
> >> >> >83+ and the se have ram, but they wouldn't be running from ram).
> they
> >> >>are
> >> >> >already on the chips memory.  so it's only the instruction
execution
> >> that
> >> >> >takes any time, not loading it.
> >> >
> >> >hmmmm, everybody gets it the wrong way. I mean the transfer
> >> >of the instruction from 9327h to the istruction register,
> >> >if there is such a register. And where the instruction
> >> >is decoded.
> >>
> >> Why do you have to transfer it? It's just a byte, and probably points
to
> a
> >> location in the z80 or something
> >>
> >
> >Well I'm not sure how exactly it works.. but I think it works kind of
like
> a
> >multiplexer/demultiplexer + a bunch of State holders ....
> >
> >the chip sets certain 'lines'(as Ronald Teune said) high (logic 1) which
> >tells what memory address to be at... the byte is just stored as open or
> >closed gates (logic)
>
> Of course...
>
> |      _
> | <=> (o)
>            _
> ^         |\
> |           \
> The wall     My head banging on it
>
>
> >and therefore the transfer from that depends only on
> >the speed of electricity, and the time it takes the CPU to switch to the

> >next memory address if it's a two byte opcode... and as far as I know it
> >pretty fast.... enough to be faster that the individual transistors (that
> >make up logic gate) can switch state :) which make the whole thing...
> >work... :)
> >
> >uhm... the last part seems a little confusing but I can understand it..
so
> >maybe you can too (come on ... just a little effort)...
>
> I understand it.
>
> >-Nicolas Gilles
>
>
>
> From: Mike3465@aol.com <Mike3465@aol.com>
>
> >no, the way ti works, is that it sort of has a register if you will, that
> >says where it is in memory, from 0000h, to ffffh.  there isn't a loading
> >register, it just executes from where it is.  the whole incrementing of
it
> is
> >done automatically and is included in the tick count.
>
> ...but I don't understand this. :-o
>
>
> >> >              SUCKER
> >> >
> >> >>
> >> >>I think 'loading' wouldn't take time at all.
> >> >>The instructions are probably somewhere on the chip with some address
> >> >>lines,
> >> >>and all you have to do is change the address lines, and you have it
in
> >the
> >> >>blink of an eye, unlike a harddisk.
> >> >>
> >> >>Groeten,
> >> >>         Ronald Teune
> >> >>         Using Opera since 08/10/2001
> >> >>         http://www.zeekoe.cjb.net
> >> >>         http://cloud.prohosting.com/zeekoe *NEW* (English)
> >> >>         iets@zeekoe.cjb.net
> >> >>=================================
> >> >>Anything that is good and useful is made of chocolate.
> >> >>A hen is an eggs way to make a new egg.
>
> >http://explorer.msn.com/intl.asp
>
> Groeten,
>         Ronald Teune
>         Using Opera since 08/10/2001
>         http://www.zeekoe.cjb.net
>         http://cloud.prohosting.com/zeekoe *NEW* (English)
>         iets@zeekoe.cjb.net
> =================================
> Anything that is good and useful is made of chocolate.
> A hen is an eggs way to make a new egg.
>
>
>
>
>
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