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Colour Clash

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Andy Kavanagh

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Nov 11, 1997, 3:00:00 AM11/11/97
to

Here's a bizarre idea:

Has anyone written, or would write, an emulator with the option to
remove colour clash? I realise that would take away part of a 'real
spectrum' game experience (and certainly Chuckie Egg would suffer: I
love the clash in that game), but it would be interesting to see. Maybe
hacking the rom or something may be possible?
--
Andy
--
Freak? Me? Most Probably!
Mail: A.Kav...@uea.ac.uk
URL: http://www.uea.ac.uk/~w9643451/

Mas

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Nov 11, 1997, 3:00:00 AM11/11/97
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Ian Collier <i...@comlab.ox.ac.uk> wrote:
>The Spectrum doesn't make colour clash by itself, you know. The hardware
>forces the programmer to do it. So an emulator can't (without a heck of
>a lot of artificial intelligence) fix something that the programmer did
>deliberately, even if he only did that because nothing else was possible.

however, I think it would be possible for the emulator's graphics routine to
do it.
If you ignore the way colour is usually stored... and did this instead

foreground colour of moving thing = (whatever)
foreground colour of anything stationary = (whatever)

then you could have the simple effect of no colour clash. Of course, the
emulator then has to keep a record of what's moving on the screen and what
isn't... but that would do it.

Of course, this could screw up a number of games which rely on colour clash
for colision detection

Sd


--
" It is always really good to be back racing winners! "
[ Hamster Times #1: Sport ]
-: http://www.angelfire.com/sd/HamsterTimes/ (#6outNow)n.ma...@cov.ac.uk :-

Steve Caddy

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Nov 11, 1997, 3:00:00 AM11/11/97
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Andy Kavanagh wrote:
>
> Here's a bizarre idea:
>
> Has anyone written, or would write, an emulator with the option to
> remove colour clash? I realise that would take away part of a 'real
> spectrum' game experience (and certainly Chuckie Egg would suffer: I
> love the clash in that game), but it would be interesting to see. Maybe
> hacking the rom or something may be possible?

It's a nice idea, with a few problems.

If you were to write to a colour block with a new colour, and not
overwrite
the old colour, you would eventually have a colour block containing all
the
colours, which would cause the spectrum to forget what pixel was meant
to
be what colour, because there is no way of storing the data in the video
memory. To overcome this, you'd have to change the fundemental things
that
make a spectrum a spectrum - ie how the hardware decodes the video
memory.

If you really want out of the colour clash problem, try using a SAM
Coupe
or emulator (is there one available anyone?).

--
\\\|///
\\ - - //
( @ @ )
-oOOo-(_)-oOOo---------------------------
Steven M Caddy
University of Wales Aberystwyth
Email: sm...@aber.ac.uk - Uni
ces...@geocities.com - Software
dynsi...@hotmail.com - Web Based
Homepage: http://www.aber.ac.uk/~smc6
-----------Oooo--------------------------
oooO ( )
( ) ) /
\ ( (_/
\_)

Damien Burke

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Nov 11, 1997, 3:00:00 AM11/11/97
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On 11 Nov 1997 15:44:38 -0000, ccx...@coventry.ac.uk (Mas)
wrote:

>foreground colour of moving thing = (whatever)
>foreground colour of anything stationary = (whatever)

A lot of time would be spent seeing what moves and what
doesn't... maybe people with really really really fast machines
could give it a go! Or you could get yourself an Atari ST
emulator, it's spiritually the Super-Speccy you know.
--
//// Damien Burke (replace d.c.u in address with demon.co.uk if replying)
//// Spectrum pages: http://www.jetman.demon.co.uk/speccy/
//// New to this group? Read this: http://www.jetman.demon.co.uk/speccy/faq/

Andrew P. Cadley

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Nov 11, 1997, 3:00:00 AM11/11/97
to


On Tue, 11 Nov 1997, Andy Kavanagh wrote:

> Here's a bizarre idea:
>
> Has anyone written, or would write, an emulator with the option to
> remove colour clash? I realise that would take away part of a 'real
> spectrum' game experience (and certainly Chuckie Egg would suffer: I
> love the clash in that game), but it would be interesting to see. Maybe
> hacking the rom or something may be possible?

Erm, am I just being stupid or something? I don't see how you can remove
the colour clash with redesigning the video memory.

AndyC

Ian Collier

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Nov 11, 1997, 3:00:00 AM11/11/97
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In article <346845...@uea.DELETEME.ac.uk>, A.Kav...@uea.DELETEME.ac.uk wrote:
>Has anyone written, or would write, an emulator with the option to
>remove colour clash?

The Spectrum doesn't make colour clash by itself, you know. The hardware


forces the programmer to do it. So an emulator can't (without a heck of
a lot of artificial intelligence) fix something that the programmer did
deliberately, even if he only did that because nothing else was possible.

--
---- Ian Collier : i...@comlab.ox.ac.uk : WWW page (including Spectrum section):
------ http://www.comlab.ox.ac.uk/oucl/users/ian.collier/imc.html

New to this group? Answers to frequently-asked questions can be had from
http://www.jetman.demon.co.uk/speccy/faq/index.html .
Sam Coupé FAQ: http://www.mono.org/~unc/Coupe/FAQ.txt

Gilberto Gaudencio

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Nov 12, 1997, 3:00:00 AM11/12/97
to

ccx...@coventry.ac.uk (Mas) wrote:

>however, I think it would be possible for the emulator's graphics routine to
>do it.
>
>If you ignore the way colour is usually stored... and did this instead
>

>foreground colour of moving thing = (whatever)
>foreground colour of anything stationary = (whatever)
>

>then you could have the simple effect of no colour clash. Of course, the
>emulator then has to keep a record of what's moving on the screen and what
>isn't... but that would do it.

Correct me if I'm wrong, but the emulator's graphics routine is in
effect an ULA emulation. It doesn't know what is moving and what's
not, it just gets bytes from the Speccy video memory and builds a
video signal (or, in this case, sends the bytes to the VGA card) 50
times per second. In order to know what's moving (sprites) and what's
not (background), the emulator would have to analyze the code and
locate the sprite routines. Not easy, I bet!

>Of course, this could screw up a number of games which rely on colour clash
>for colision detection

And would probably cause the rainbow effect to fail too.


--
||// \\// Gilberto Gaudencio
// \\ zilog(at)mail.telepac.pt
//|| //\\ ICQ 1614980

Andrew Cadley

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Nov 12, 1997, 3:00:00 AM11/12/97
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Andy Kavanagh wrote:
>

> Surely all it needs is a routine between the speccy-to-screen and
> screen-display bits?

You'd still need some kind of modified ULA emulation. I s'pose you could
try playing stuff on a CPC emulator and *pretending* it's a speccy.

> Spot the non-technical language here... I'm no programmer...

Umm, and obviously not much of a hardware designer either. ;-)

AndyC

Andrew Cadley

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Nov 12, 1997, 3:00:00 AM11/12/97
to

Steve Caddy wrote:
>

> If you really want out of the colour clash problem, try using a SAM
> Coupe
> or emulator (is there one available anyone?).

There's SimCoupe, but I haven't quite figured out how it works (having
never seen a real SAM)

AndyC

Andy Kavanagh

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Nov 12, 1997, 3:00:00 AM11/12/97
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Mas wrote:
> Of course, this could screw up a number of games which rely on colour clash
> for colision detection

Not if you let the Speccy bit 'think' that there is colour clash, when
in fact the 'emu' bit gets rid of it...

Surely all it needs is a routine between the speccy-to-screen and
screen-display bits?

Spot the non-technical language here... I'm no programmer...

John Elliott

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Nov 12, 1997, 3:00:00 AM11/12/97
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Andy Kavanagh (A.Kav...@uea.DELETEME.ac.uk) wrote:

: Mas wrote:
: > Of course, this could screw up a number of games which rely on colour clash
: > for colision detection

: Not if you let the Speccy bit 'think' that there is colour clash, when
: in fact the 'emu' bit gets rid of it...

: Surely all it needs is a routine between the speccy-to-screen and
: screen-display bits?

So, you want the emulator to paint some pixels using a colour that isn't
the same as the colour in the Spectrum's memory. How should it work out
what colour to use?

[Example]

In Jet Set Willy, the colour blocks are used to tell what is in a square.
Willy can jump through certain types of square ('air' and 'water').
Suppose Willy is jumping through a 'water' square (for example, go to the
Bathroom, stand under the stairs, and jump). The emulator would have to work
out which pixels belonged to Willy, and paint them a different colour.
It can't do it by looking at what is/isn't moving, because the guardians on
the screen will also be moving, and they shouldn't be painted white.
And that's just for one game...

Consider Paperboy. The entire playing area has two colours, and scrolls
continuously (so the "what moved recently?" test will show up the whole
screen). Attribute clash shows up when the bicycle moves from the pavement
(cyan) to the road (magenta). How should the emulator paint the bicycle
as it moves across the join?

------------- http://www.seasip.demon.co.uk/index.html --------------------
John Elliott |BLOODNOK: "But why have you got such a long face?"
|SEAGOON: "Heavy dentures, Sir!" - The Goon Show
:-------------------------------------------------------------------------)

Marcus Durham

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Nov 12, 1997, 3:00:00 AM11/12/97
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In article <346845...@uea.DELETEME.ac.uk>, Andy Kavanagh <A.Kavanagh

@uea.DELETEME.ac.uk> cheerily wrote:
>Here's a bizarre idea:
>
>Has anyone written, or would write, an emulator with the option to
>remove colour clash?
[snip]

Heretic! Sacrilege! May you burn in the eternal fires of hell for ever
(and afterwards). ;-)

--
Marcus E. Durham
http://www.zenn.demon.co.uk/index.htm
"We're the Sweeney son and we haven't had our dinner"

Brian Gaff

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Nov 13, 1997, 3:00:00 AM11/13/97
to

Takibg this to its logical end point, you could write an
emulation of a special processor that has access to a lot more
RAM and still allow Speccy stuff to run. I get quite a lot of
requests for a ZX Basic for the PC that can be much larger than
the restrictions on the Speccy.

These are not Emulators as suck though. What wouls we call such
a beast?

Brian

--
bri...@bgserv.demon.co.uk
Brian Gaff AKA B G Services - Still supporting Z80
The Spectrum Emulator


AutismUK

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Nov 13, 1997, 3:00:00 AM11/13/97
to

In article <3469A1...@uea.DELETEME.ac.uk>, Andy Kavanagh
<A.Kav...@uea.DELETEME.ac.uk> writes:

>Not if you let the Speccy bit 'think' that there is colour clash, when
>in fact the 'emu' bit gets rid of it...
>
>Surely all it needs is a routine between the speccy-to-screen and
>screen-display bits?
>

>Spot the non-technical language here... I'm no programmer...

It might be possible if you keep the old emulation and write 'through'
the screen - keep a logical screen which is updated on a write to
$4000-$5800 and when it is written to update the pixel with the
appropriate value in the attribute byte. Results would undoubtedly be
variable !

How does the Speccy use colour clash to do collision detection ? Is it
just checking if the Attribute memory has been changed ?

Regards, Paul Robson (auti...@aol.com)

ke...@rjfm2.demon.co.uk

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Nov 13, 1997, 3:00:00 AM11/13/97
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On Tue, 11 Nov 1997 11:46:16 +0000, Andy Kavanagh
<A.Kav...@uea.DELETEME.ac.uk> wrote:

>Has anyone written, or would write, an emulator with the option to

>remove colour clash? I realise that would take away part of a 'real
>spectrum' game experience (and certainly Chuckie Egg would suffer: I
>love the clash in that game), but it would be interesting to see. Maybe
>hacking the rom or something may be possible?

Dare I suggest that the programmer could also remove the flickering in
Ultimate games..Jetpac is a good example.

Rob.

Andy Kavanagh

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Nov 13, 1997, 3:00:00 AM11/13/97
to

John Elliott wrote:
>
> So, you want the emulator to paint some pixels using a colour that isn't
> the same as the colour in the Spectrum's memory. How should it work out
> what colour to use?
>

Oh I don't know!

Why can't the emu have a virtual screen, like a real speccy, but
displays a non-colour clash one? Perhaps it can remember what
background colours were, etc?

Andrew P. Cadley

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Nov 13, 1997, 3:00:00 AM11/13/97
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On Thu, 13 Nov 1997, Brian Gaff wrote:

>
> Takibg this to its logical end point, you could write an
> emulation of a special processor that has access to a lot more
> RAM and still allow Speccy stuff to run. I get quite a lot of
> requests for a ZX Basic for the PC that can be much larger than
> the restrictions on the Speccy.
>

Brilliant idea. Speed it up a little, improve the sound, extend BASIC,
and give it more memory and better graphics.

Congratulations, you've re-invented the Sam Coupe. Now go get a CPC+
emulator, the *most* powerful 8-bit.

IMHO, of course.

AndyC

Andrew P. Cadley

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Nov 13, 1997, 3:00:00 AM11/13/97
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On 12 Nov 1997, John Elliott wrote:

> In Jet Set Willy, the colour blocks are used to tell what is in a square.
> Willy can jump through certain types of square ('air' and 'water').

Except of course, JSW doesn't have 'water' blocks. Just brick, platform,
converyor, stairs, air and deadly.

AndyC

Spike

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Nov 13, 1997, 3:00:00 AM11/13/97
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Andrew P. Cadley (w962...@cpca6.uea.ac.uk) wrote:
:
:

And what about the swimming pool?
What d'y'call that? Scotch mist?

It's water. You can walk under it, and as JSW is such a special little
person, he can walk on it as well....
:)
--
-----------------------------------------------------------------------------
|u5...@teach.cs.keele.ac.uk| Windows95 (noun): 32 bit extensions and a |
| | graphical shell for a 16 bit patch to an 8 bit |
|Andrew Halliwell | operating system originally coded for a 4 bit |
|Principal Subjects in:- |microprocessor, written by a 2 bit company, that|
|Comp Sci & Electronics | can't stand 1 bit of competition. |
-----------------------------------------------------------------------------
|GCv3.1 GCS/EL>$ d---(dpu) s+/- a- C++ U N++ o+ K- w-- M+/++ PS+++ PE- Y t+ |
|5++ X+/++ R+ tv+ b+ D G e>PhD h/h+ !r! !y-|I can't say F**K either now! :( |

AutismUK

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Nov 13, 1997, 3:00:00 AM11/13/97
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In article <879364...@ox.compsoc.org.uk>, j...@ox.compsoc.org.uk (John
Elliott) writes:

>In Jet Set Willy, the colour blocks are used to tell what is in a square.
>Willy can jump through certain types of square ('air' and 'water').

>Suppose Willy is jumping through a 'water' square (for example, go to the
>Bathroom, stand under the stairs, and jump). The emulator would have to work
>out which pixels belonged to Willy, and paint them a different colour.
>It can't do it by looking at what is/isn't moving, because the guardians on
>the screen will also be moving, and they shouldn't be painted white.

It could be made to work if the game wrote to the screen directly, as
an individual sprite is usually drawn in one 'go'. If the screen is generated
seperately, and copied to the main screen via LDIR, it wouldn't work.

Of course, it might get the colours wrong - it would depend on the
attribute being set first, then the pixels.

[It's a dead loss really. Anyway, colour clash is part of the Spectrum
Experience.]

Paul Robson (auti...@aol.com)

Andy Kavanagh

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Nov 14, 1997, 3:00:00 AM11/14/97
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Spike wrote:
> It's water. You can walk under it, and as JSW is such a special little
> person, he can walk on it as well....
> :)

So:

1) He walks on water
2) He comes back to life
3) He's worshipped by C.S.S. type bods

Messiah! Messiah!
--
Andy
--
Who needs 32Mb PC's when you can run Chuckie Egg in 16K?
A.Kav...@uea.ac.uk * http://www.uea.ac.uk/~w9643451/index.htm

Amiga-Speccy-CPC-Atari-PC-Arcade-NES-Gameboy-Gamegear-Oric-Vic20
- all in one box!

Andrew P. Cadley

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Nov 14, 1997, 3:00:00 AM11/14/97
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On 13 Nov 1997, Spike wrote:

> Andrew P. Cadley (w962...@cpca6.uea.ac.uk) wrote:
> :

> : Except of course, JSW doesn't have 'water' blocks. Just brick, platform,
> : converyor, stairs, air and deadly.
>
> And what about the swimming pool?
> What d'y'call that? Scotch mist?

> It's water. You can walk under it, and as JSW is such a special little
> person, he can walk on it as well....
> :)

It may *look* like water (even if it doesn't ;-) ), it may be supposed to be
water but is in fact platform. If you don't believe me (as someone
re-coding JSW2 for the CPC+) try using one of them editor thingys.

AndyC

Gerard Sweeney

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Nov 14, 1997, 3:00:00 AM11/14/97
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> Spike wrote:
> > It's water. You can walk under it, and as JSW is such a special little
> > person, he can walk on it as well....
> > :)
>
Andy wrote

> So:
>
> 1) He walks on water
> 2) He comes back to life
> 3) He's worshipped by C.S.S. type bods
>
> Messiah! Messiah!

He's not the Messiah - he's a very naughty boy :-)

Gerard
--
Gerard Sweeney
Hackers Anonymous
Team Amiga
Visit the official Hack Attack III WWW page at
http://www.geocities.com/siliconvalley/lakes/4871
Where you're always likely to get a good POKE (fnar!)

Gareth Owen

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Nov 14, 1997, 3:00:00 AM11/14/97
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zi...@mail.telepac.nojunkmail.pt (Gilberto Gaudencio) writes:
>
> A while back, someone suggested we should change the name of C.S.S to
> alt.complete.nonsense. Now I see why... ;)
>

I vote against on the grounds that alt.complete.nonsense is a tautology.

--
Gaz Owen
There ain't no sanity clause
LocalWords: tortology

John Elliott

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Nov 14, 1997, 3:00:00 AM11/14/97
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Andrew P. Cadley (w962...@cpca6.uea.ac.uk) wrote:


: On 12 Nov 1997, John Elliott wrote:

: > In Jet Set Willy, the colour blocks are used to tell what is in a square.

: > Willy can jump through certain types of square ('air' and 'water').

: Except of course, JSW doesn't have 'water' blocks. Just brick, platform,

: converyor, stairs, air and deadly.

I always call its four basic block types Air, Earth, Fire and Water, after
the four 'classical' elements. Anyway, what do you think the Swimming Pool is
filled with?

Gilberto Gaudencio

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Nov 14, 1997, 3:00:00 AM11/14/97
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Andy Kavanagh <A.Kav...@uea.DELETEME.ac.uk> wrote:

>Spike wrote:
>> It's water. You can walk under it, and as JSW is such a special little
>> person, he can walk on it as well....
>> :)
>

>So:
>
>1) He walks on water
>2) He comes back to life
>3) He's worshipped by C.S.S. type bods
>
>Messiah! Messiah!

A while back, someone suggested we should change the name of C.S.S to


alt.complete.nonsense. Now I see why... ;)

Philip Kendall

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Nov 14, 1997, 3:00:00 AM11/14/97
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"Gerard Sweeney" <G.Sw...@arts.gla.ac.uk> writes:

> He's not the Messiah - he's a very naughty boy :-)

Hmm... this is a bit spooky -- we had Life of Brian on it our JCR last
night :-)

Phil

--
/ Philip Kendall (pa...@cam.ac.uk pa...@kendalls.demon.co.uk) \
| http://www.geocities.com/SiliconValley/Park/5427/spectrum.htm |
| New? Read the FAQ: http://www.jetman.demon.co.uk/speccy/faq/ |
\ Looking for something?: http://drson.vse.cz/snapsearch/ /

AutismUK

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Nov 15, 1997, 3:00:00 AM11/15/97
to

In article <346C33...@uea.DELETEME.ac.uk>, Andy Kavanagh
<A.Kav...@uea.DELETEME.ac.uk> writes:

>1) He walks on water
>2) He comes back to life
>3) He's worshipped by C.S.S. type bods
>
>Messiah! Messiah!

I have translated the JSW protection card into letters and rearranged them
using a special program I devised. I have discovered that the JSW card
predicts, amongst others.

- the death of Princess Diana
- Labour winning the 1997 Election
- Amstrad taking over Sinclair and subsequently going broke
- Matthew Smith will be crucified in the near future for posting binaries
to c.s.s
- Armageddon on 22 October 2004 caused by riots in the Eastern Bloc
when emulators are declared illegal.

... with at least 10% certainty. I deduce from this that the JSW Copy
protection card is an inerrant document we should live our lives by.

As it is written in Col 3 :Row 4 "no-one shall enter the Kingdom of God
except by way of the Banyan Tree"


Andrew P. Cadley

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Nov 16, 1997, 3:00:00 AM11/16/97
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On 15 Nov 1997, AutismUK wrote:

> In article <346C33...@uea.DELETEME.ac.uk>, Andy Kavanagh
> <A.Kav...@uea.DELETEME.ac.uk> writes:

> I have translated the JSW protection card into letters and rearranged them
> using a special program I devised. I have discovered that the JSW card
> predicts, amongst others.

Pah! That's nothing. You should try it on the JSWII one, there's more
prophecies there than you could possibly imagine.

AndyC

Jonathan Tranter

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Nov 16, 1997, 3:00:00 AM11/16/97
to

In article <346aab2...@news.demon.co.uk>, Damien Burke
<dam...@jetman.d.c.u> writes
>A lot of time would be spent seeing what moves and what
>doesn't... maybe people with really really really fast machines
>could give it a go! Or you could get yourself an Atari ST
>emulator, it's spiritually the Super-Speccy you know.

The ST -was- the Super-Speccy! Most of us lot upgraded from Speccys to
STs why the Commode 64 lot bought naff Amigas. Silly bunch.

Jonathan

---
Jonathan Tranter
Processor Simulation Software: http://www.wolves4westbrom2.demon.co.uk

Jonathan Tranter

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Nov 16, 1997, 3:00:00 AM11/16/97
to

In article <0GlE5qAj...@wolves4westbrom2.demon.co.uk>, Jonathan
Tranter <jona...@wolves4westbrom2.demon.co.uk> writes

>In article <346aab2...@news.demon.co.uk>, Damien Burke
><dam...@jetman.d.c.u> writes
>>A lot of time would be spent seeing what moves and what
>>doesn't... maybe people with really really really fast machines
>>could give it a go! Or you could get yourself an Atari ST
>>emulator, it's spiritually the Super-Speccy you know.
>
>The ST -was- the Super-Speccy! Most of us lot upgraded from Speccys to
>STs why the Commode 64 lot bought naff Amigas. Silly bunch.

Sorry... "why" should have read "where"... :(

Spike

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Nov 16, 1997, 3:00:00 AM11/16/97
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Jonathan Tranter (jona...@wolves4westbrom2.demon.co.uk) wrote:
: >The ST -was- the Super-Speccy! Most of us lot upgraded from Speccys to

: >STs why the Commode 64 lot bought naff Amigas. Silly bunch.
:
: Sorry... "why" should have read "where"... :(

<pedant>
Actually, I think "whilst" fits in there best....
</pedant>

OlofYol

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Nov 17, 1997, 3:00:00 AM11/17/97
to

Auti...@aol.com (AutismUK) wibbles on, parodying the recent Bible Code
stories:

>I have translated the JSW protection card into letters and rearranged them
>using a special program I devised. I have discovered that the JSW card
>predicts, amongst others.
>

> - the death of Princess Diana
> - Labour winning the 1997 Election
> - Amstrad taking over Sinclair and subsequently going broke
> - Matthew Smith will be crucified in the near future for posting binaries
> to c.s.s
> - Armageddon on 22 October 2004 caused by riots in the Eastern Bloc
> when emulators are declared illegal.

On this subject, I actually wrote a QBasic (yes I know) program to do the same
thing. Unfortunately I don't speak Hebrew, and didn't have an on-line bible so
I performed the test on What's new in Windows.

I can find all the names of the members of my immediate family encoded in v
close proximity, crossed with words such as:
Modem, Network Card, Microsoft, etc.

Now if you did this analysis on the bible you'd probably find the words that
cross are along the lines of:
Pestilence, Murder, and Sodom (!).

It is hereby declared that the Bible Code is merely coincedence, and I have
looked into this seriously, even read the Mathematical Paper on the subject.

(Coupled with the fact that all Hewbrew letters are also numbers, you could
find any date you wanted associated with a particular word, e.g. Armageddon.)

Yes I know that this is seriously off topic, so I'll bring it back in line.

Willy probably is the messiah.


Cheers,

Ol < olofyol @ aol.nospam.com >

"The Ballad of Jumping Jack.....
An Intrepid explorer named Jack, "


Andy Kavanagh

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Nov 17, 1997, 3:00:00 AM11/17/97
to

Jonathan Tranter wrote:
> The ST -was- the Super-Speccy! Most of us lot upgraded from Speccys to
> STs why the Commode 64 lot bought naff Amigas. Silly bunch.

Amigas, NAFF? WHAT???

...loads quantum torpedoes...

Andy Kavanagh

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Nov 18, 1997, 3:00:00 AM11/18/97
to

nr...@csc.canterbury.ac.nz wrote:
> > Jonathan Tranter wrote:
> >> The ST -was- the Super-Speccy! Most of us lot upgraded from Speccys to
> >> STs why the Commode 64 lot bought naff Amigas. Silly bunch.

> I think he's just lost his marbles... the stress of having an inferior
> machine finally got to him. :-)

Nothing outdoes my Miggy, 'cept a Speccy, but I've got ZXAM so thats
alright. Bloody Pileso Crap and Apple Cackintoshes.

>
> ...Obviously itching for a flame war... ...desperate for attention...
> ...the usual story...
> The sad thing is, if he'd just bought an Amiga in the first place, he
> could've led a quite productive life.

I never understood anyone who'd buy a 'computer' (used in the loosest
sense) who's operating system was called TOS. How mad are they?

Mas

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Nov 18, 1997, 3:00:00 AM11/18/97
to

Gilberto Gaudencio <zi...@mail.telepac.nojunkmail.pt> wrote:
>>however, I think it would be possible for the emulator's graphics routine to
>>do it.
>>If you ignore the way colour is usually stored... and did this instead
>>foreground colour of moving thing = (whatever)
>>foreground colour of anything stationary = (whatever)
>
>Correct me if I'm wrong, but the emulator's graphics routine is in
>effect an ULA emulation. It doesn't know what is moving and what's
>not, it just gets bytes from the Speccy video memory and builds a
>video signal (or, in this case, sends the bytes to the VGA card) 50
>times per second. In order to know what's moving (sprites) and what's
>not (background), the emulator would have to analyze the code and
>locate the sprite routines. Not easy, I bet!

ah. you're making it too complex.
What you could do, is make use of the Speccy's colour routines. The speccy,
as we all know has a tiny amount of memory mapping all the colour locations
As, in a lot of games - particularly flip screen adventures - such as 'the
wally games' - the background is drawn and there are maybe 2 or 3 things
moving on the screen at a time, then the emulator can grab the attribute
information, and, when it gets told to put something to the screen in a
different colour, only the bits being plotted on the screen are that colour,
the rest, retains the old colour map. Obviously, as most screens redraw
themselves (as locations change) there should be a method of identifying the
need to grab the (new) attribute map - and that should be (possibly) if more
than 50% of the screen is given a new attribute colour...

>>Of course, this could screw up a number of games which rely on colour clash
>>for colision detection

>And would probably cause the rainbow effect to fail too.

*nods*
but you could always have it as an option on the emulator "no colour clash"
(it would probably help to slow down the emulator on top of the range pentiums
etc etc)

M


--
" Elemenary my dear W. "
( Hamster Times #6: Feature )
-: http://www.angelfire.com/sd/HamsterTimes/ (#6outNow)n.ma...@cov.ac.uk :-

Look What the Cat Dragged in

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Nov 18, 1997, 3:00:00 AM11/18/97
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Jonathan Tranter <jona...@wolves4westbrom2.demon.co.uk> wrote in article
<TWQNtDA2...@wolves4westbrom2.demon.co.uk>...

> In article <0GlE5qAj...@wolves4westbrom2.demon.co.uk>, Jonathan
> Tranter <jona...@wolves4westbrom2.demon.co.uk> writes
> >In article <346aab2...@news.demon.co.uk>, Damien Burke
> ><dam...@jetman.d.c.u> writes
> >>A lot of time would be spent seeing what moves and what
> >>doesn't... maybe people with really really really fast machines
> >>could give it a go! Or you could get yourself an Atari ST
> >>emulator, it's spiritually the Super-Speccy you know.
> >
> >The ST -was- the Super-Speccy! Most of us lot upgraded from Speccys to
> >STs why the Commode 64 lot bought naff Amigas. Silly bunch.
>
> Sorry... "why" should have read "where"... :(

I read it as 'while'.

My Amiga was useful for 18 months, until I got a handheld Psion Siena.
Then, I just didn't use the Amiga. It's too busted up to sell, so it just
sits in the room, being useless. I wanna 486 DX4/100, yup ahh doo, and it
only costs a bit more than my Amiga did for a machine with 8 times more
RAM, and a processor 10 times faster.

Off-topic?

I thought the SAM was the super-speccy upgrade for speccy users.

Off-topic?

> Jonathan Tranter
>>>> Processor Simulation Software:<<<<

You mean emulators?

--
J.Smith
------------------------
To reply by Email, change the 'z' in lwtcdz to i
-------
Well, well, well... Look What the Cat Dragged In
Bloated in a nightbreed style... With just 9 million hits this week... and
rising...
http://www.geocities.com/SoHo/7691
http://www.homeusers.prestel.co.uk/lwtcdi/all/
------------------------------


Gilberto Gaudencio

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Nov 19, 1997, 3:00:00 AM11/19/97
to

ccx...@coventry.ac.uk (Mas) wrote:

>ah. you're making it too complex.
>What you could do, is make use of the Speccy's colour routines. The speccy,
>as we all know has a tiny amount of memory mapping all the colour locations
>As, in a lot of games - particularly flip screen adventures - such as 'the
>wally games' - the background is drawn and there are maybe 2 or 3 things
>moving on the screen at a time, then the emulator can grab the attribute
>information, and, when it gets told to put something to the screen in a
>different colour, only the bits being plotted on the screen are that colour,
>the rest, retains the old colour map. Obviously, as most screens redraw
>themselves (as locations change) there should be a method of identifying the
>need to grab the (new) attribute map - and that should be (possibly) if more
>than 50% of the screen is given a new attribute colour...

I'm pretty sure it can't be done. In order to get a 100% color clash
free picture, a Sam Coupé emulator is the way to go. It could be built
on top of the Z80 emulation of most emulators, I guess.

>*nods*
>but you could always have it as an option on the emulator "no colour clash"
>(it would probably help to slow down the emulator on top of the range pentiums
>etc etc)

To slow the emulator down on a top-end Pentium, just run it under
Windoze. ;)

Gilberto Gaudencio

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Nov 19, 1997, 3:00:00 AM11/19/97
to

"Andrew P. Cadley" <w962...@cpca6.uea.ac.uk> wrote:

>Another one for MTM prehaps?

That would be A Very Good Thing!

>On a similar note, is the SAM manual available anywhere online? I looked
>in the SAM FAQ and there's no mention of it there. Oh and how do you put
>sam stuff (from NVG etc) onto disk images for SimCoupe.

I couldn't find any either. I never saw a Coupe in my life, until I
ran into SimCoupe. I was able to write and run a small basic program
fist time without any errors in a couple of minutes. It's nice to see
that MGT built it to be very much like the Spectrum.

>I'd love to finally see if a SAM is better than a CPC+, though I doubt
>it. ;-)

Wanna bet? ;)

Graham Goring

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Nov 19, 1997, 3:00:00 AM11/19/97
to

Quoth the Raven in article <Pine.OSF.3.91.971119121144.25685A-
100...@cpca5.uea.ac.uk>, "Andrew P. Cadley" <w962...@cpca6.uea.ac.uk>
writes
>
>
>On Wed, 19 Nov 1997, Gilberto Gaudencio wrote:

>
>> ccx...@coventry.ac.uk (Mas) wrote:
>>
>>
>> I'm pretty sure it can't be done. In order to get a 100% color clash
>> free picture, a Sam Coupé emulator is the way to go. It could be built
>> on top of the Z80 emulation of most emulators, I guess.
>
>Another one for MTM prehaps?
>
>On a similar note, is the SAM manual available anywhere online? I looked
>in the SAM FAQ and there's no mention of it there. Oh and how do you put
>sam stuff (from NVG etc) onto disk images for SimCoupe.
>
>I'd love to finally see if a SAM is better than a CPC+, though I doubt
>it. ;-)

If that's the SAM FAQ I wrote, then I did that back in Uni, so it ain't
been updated in 2 or 3 years... But I've never heard of an on-line
version of the manual... Besides, who wants to read lotsa crud by Mel
Croucher???

If you've any simple Questions about the SAM Coupé then mail me, or
better yet, Ian Collier. (That alright, Ian?)

Graham

--

/====================================================\ +--------------+
| My proverb for this week: | |This Space For|
| "The less bits, the less can go wrong... | | Hire - Ideal |
| Unless you wobble something important at the back" | |For Weddings &|
\==Graham Goring - gra...@duketastrophy.demon.co.uk==/ | Bahmitzvas |
My Website, coming to a server near you - SOON +--------------+

Andrew P. Cadley

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Nov 19, 1997, 3:00:00 AM11/19/97
to


On Wed, 19 Nov 1997, Gilberto Gaudencio wrote:

> ccx...@coventry.ac.uk (Mas) wrote:
>=20
>=20


> I'm pretty sure it can't be done. In order to get a 100% color clash

> free picture, a Sam Coup=E9 emulator is the way to go. It could be built


> on top of the Z80 emulation of most emulators, I guess.

Another one for MTM prehaps?

On a similar note, is the SAM manual available anywhere online? I looked=20
in the SAM FAQ and there's no mention of it there. Oh and how do you put=20


sam stuff (from NVG etc) onto disk images for SimCoupe.

I'd love to finally see if a SAM is better than a CPC+, though I doubt=20
it. ;-)

AndyC=20

Mark Sturdy

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Nov 19, 1997, 3:00:00 AM11/19/97
to

On Wed, 19 Nov 1997, Andrew P. Cadley wrote:

> On a similar note, is the SAM manual available anywhere online?

Wouldn't have thought so - Format Publications are still building SAMs
(bless 'em), so I doubt that Bob would be too pleased about the manual
appearing on the net when he's selling them for a tenner a throw . . .


Marcus Durham

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Nov 20, 1997, 3:00:00 AM11/20/97
to

In article <Pine.PCW.3.95.971119202030.9735E-100000@pc-cl-
148.csv.warwick.ac.uk>, Mark Sturdy <py...@csv.warwick.ac.uk> cheerily
wrote:
[snip]

> so I doubt that Bob would be too pleased about the manual
>appearing on the net when he's selling them for a tenner a throw . . .

What, the Sam or the manual? ;-)

Seriously, do people still buy them? Are they expensive? If they are a
reasonable cost I might consider getting one.

--
Marcus E. Durham
http://www.zenn.demon.co.uk/index.htm
"We're the Sweeney son and we haven't had our dinner"

ke...@rjfm2.demon.co.uk

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Nov 22, 1997, 3:00:00 AM11/22/97
to

On Tue, 18 Nov 1997 11:40:46 +0000, Andy Kavanagh
<A.Kav...@uea.DELETEME.ac.uk> wrote:


>I never understood anyone who'd buy a 'computer' (used in the loosest
>sense) who's operating system was called TOS. How mad are they?

A bit rich coming from people buying computers with Guru errors...

Rob.

Mark Sturdy

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Nov 22, 1997, 3:00:00 AM11/22/97
to

On Thu, 20 Nov 1997, Marcus Durham wrote:

> Seriously, do people still buy them?

Well, I guess they must be - Bob/West Coast wouldn't bother otherwise
(or would they?)

> Are they expensive? If they are a
> reasonable cost I might consider getting one.

pound199.99 for a 512K SAM with one drive, althought they often have
reconditioned SAMs on offer for quite a lot less.


Ian Collier

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Nov 24, 1997, 3:00:00 AM11/24/97
to

In article <A5CAFMA7$xc0...@duketastrophy.demon.co.uk>, Graham Goring <gra...@duketastrophy.demon.co.uk.nospam> wrote:
>If you've any simple Questions about the SAM Coupé then mail me, or
>better yet, Ian Collier. (That alright, Ian?)

Er, no. Or, yes and I will bounce them back to you...

Send them to sam-users at nvg.ntnu.no.
--
---- Ian Collier : i...@comlab.ox.ac.uk : WWW page (including Spectrum section):
------ http://www.comlab.ox.ac.uk/oucl/users/ian.collier/imc.html

New to this group? Answers to frequently-asked questions can be had from
http://www.jetman.demon.co.uk/speccy/faq/index.html .
Sam Coupé FAQ: http://www.mono.org/~unc/Coupe/FAQ.txt

Graham Goring

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Nov 24, 1997, 3:00:00 AM11/24/97
to

Quoth the Raven in article <12609-h...@comlab.ox.ac.uk>, Ian
Collier <i...@comlab.ox.ac.uk> writes

>In article <A5CAFMA7$xc0...@duketastrophy.demon.co.uk>, Graham Goring
><gra...@duketastrophy.demon.co.uk.nospam> wrote:
>>If you've any simple Questions about the SAM Coupé then mail me, or
>>better yet, Ian Collier. (That alright, Ian?)
>
>Er, no. Or, yes and I will bounce them back to you...
>
>Send them to sam-users at nvg.ntnu.no.

If he's not subscribed though, it might make reading them difficult. :)

Andy Kavanagh

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Nov 25, 1997, 3:00:00 AM11/25/97
to

ke...@rjfm2.demon.co.uk wrote:
> >I never understood anyone who'd buy a 'computer' (used in the loosest
> >sense) who's operating system was called TOS. How mad are they?
>
> A bit rich coming from people buying computers with Guru errors...

At least the Amiga could crash with style...

--
Andy
--
Who needs 32Mb PC's when you can run Chuckie Egg in 16K?
A.Kav...@uea.ac.uk * http://www.uea.ac.uk/~w9643451/index.htm

K: Invalid Colour

Damien Burke

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Nov 25, 1997, 3:00:00 AM11/25/97
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On Tue, 25 Nov 1997 11:18:42 +0000, Andy Kavanagh
<A.Kav...@uea.DELETEME.ac.uk> wrote:

>ke...@rjfm2.demon.co.uk wrote:
>> >I never understood anyone who'd buy a 'computer' (used in the loosest
>> >sense) who's operating system was called TOS. How mad are they?
>>
>> A bit rich coming from people buying computers with Guru errors...
>
>At least the Amiga could crash with style...

What, a crappy little box with numbers and text in it, 'style'??
A load of bombs across the desktop, now *that's* style. You
could even pretend the number of bombs equated with the severity
of the crash. Class.
--
//// Damien Burke (replace d.c.u in address with demon.co.uk if replying)
//// Spectrum pages: http://www.jetman.demon.co.uk/speccy/
//// New to this group? Read this: http://www.kendalls.demon.co.uk/cssfaq/

Andy Kavanagh

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Nov 26, 1997, 3:00:00 AM11/26/97
to

Damien Burke wrote:
> >At least the Amiga could crash with style...
>
> What, a crappy little box with numbers and text in it, 'style'??
> A load of bombs across the desktop, now *that's* style. You
> could even pretend the number of bombs equated with the severity
> of the crash. Class.

You've obviously never seen my Amiga crash then... the screen splits
into 4 squares, with flashing coloured 'detuned TV snow' in each, and a
Waaaah-weeeeee noise and flickering and the drive lights flash an' all.
Its sounds like Bentley Rhythm Ace!

Bob Brenchley

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Nov 27, 1997, 3:00:00 AM11/27/97
to


SAM Elite, NEW, single (new style) drive, built in printer interface,
PSU, Manuals, SAMDOS. All for 199.95ukp. 1 year warranty, entended to
2 yrs on main board.

SAM Coupe, recon, single new style drive fitted and brand new
keyboard, psu, manuals, SAMDOS. All for 139.95ukp 6 month warranty.


All prices include UK mainland carrier delivery.

HTH.

--
Bob.

Mark Sturdy

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Nov 29, 1997, 3:00:00 AM11/29/97
to

On Wed, 26 Nov 1997, Andy Davis wrote:

> on 22 Nov 97, Mark Sturdy wrote...


>
> >On Thu, 20 Nov 1997, Marcus Durham wrote:
> >
> >> Seriously, do people still buy them?
> >
> >Well, I guess they must be - Bob/West Coast wouldn't bother otherwise
> >(or would they?)
>

> Like his FORMAT DX-1?

I thought the story with the DX-1 was that Blue Alpha were building the
thing, and when Mark Hall fell ill and Blue Alpha closed down, there
wasn't any option but to cancel the project.


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