-Original Message-
From: stu [EMAIL PROTECTED]
To: [EMAIL PROTECTED] [EMAIL PROTECTED]
Date: 07 December 1998 21:46
Subject: about that planned elite conversion
Hi everyone,
I remember a little while back, plans to do a conversion of Elite for the SAM.
Is this any further down the road?
-Original Message-
From: Smith, Gavin [IRE07:8939:EXCH] [EMAIL PROTECTED]
To: [EMAIL PROTECTED] [EMAIL PROTECTED]
Date: 22 December 1998 15:05
Subject: RE: Christmas Present from Sad Snail Productions.reply
Aw no Chris, tell me you're winding me up! And if not, patch it,
please! I
On Mon, 4 Jan 1999 19:52:01 - Tue, 5 Jan 99 22:52:27 GMT, David
Ledbury [EMAIL PROTECTED] wrote:
AFAIK he is
Use a bit of netiquette mate!
There's nothing wrong in using common 'net abbreviations... If you don't
already know, AFAIK simply means 'As Far As I Know'...
-Original Message-
From: [EMAIL PROTECTED] [EMAIL PROTECTED]
To: [EMAIL PROTECTED] [EMAIL PROTECTED]
Date: 08 January 1999 19:08
Subject: Re: New URLs
IKWYM, I've been on the net for quite a while. I meant the ridiculous
amount of quoting. I don't know if it bothers other people, but
This is a test to see if I've entered the SAM group address in my address
book correctly...
Re: The Defenders game disk:
Does the disk's version of Dyzonium have the cheat mode in it? It's an
excellent game, but too hard for the likes of me.
The version of Dyzonium (written by me old mate Balor Knight) on the
Defender disk does have the cheat mode... However; I'm not going to
'spill
I'm glad to hear that the games disk features the 'cheat' version of Dyzonium.
A cheque will be sent before too long (Don't worry, I remember how to
invoke the cheat routine!)
I'm not too sure if Balor changed the cheat invocation in the final release!!
Knowing
how his mind works he probably
I've played demos of both the Sam and Speccy versions of Astroball, though
I never actually bought either. I liked the game, but I was mightily
disappointed when someone said that the Space Invaders but wasn't in the
Sam version... I did buy Dyzonium, though, and consider it to be one of the
Sam's
-Original Message-
From: Chris White [EMAIL PROTECTED]
To: [EMAIL PROTECTED] [EMAIL PROTECTED]
Date: 24 January 1999 19:34
Subject: Re: Games Ahoy! - Dyzonium query
Yes they do. And I (as a Console Proggrammer ) only do the titles I want to
write and have as much input as time allows??
-Original Message-
From: Gordon Wallis [EMAIL PROTECTED]
To: INTERNET:[EMAIL PROTECTED] [EMAIL PROTECTED]
Date: 24 January 1999 20:49
Subject: Re: Games Ahoy! - Dyzonium query
Hated it as in 'the project', 'the end result' or 'the Fantastic Four in
general'?
Yes!!! All of the above!!!
...urr... who is this person with the nose btw?... ive never heard of
him... sure his nose is wonderful though speaking of which... did
the sam robot have a nose?... not an important q, but ya know...
Karl Malden was in 'The Streets Of San Francisco', amongst other things!!
Quite why
I was shocked and more than a little saddened to hear of the tragic death
of Malcolm Mackenzie.
I'd like to offer my condolences to his family and close friends.
Although I never met Malcolm, I did speak with him several times on the
telephone. He struck me as an honest chap with immense
-Original Message-
From: Ian Collier [EMAIL PROTECTED]
To: [EMAIL PROTECTED] [EMAIL PROTECTED]
Date: 19 February 1999 16:38
Subject: Re: SAM FAQ Version 2
Chris Pile (oh, and I don't think you mentioned ProDos either)
He didn't!
Nor DEFENDER, which I'm sure my old mate Balor Knight (who
-Original Message-
From: Simon Cooke [EMAIL PROTECTED]
To: [EMAIL PROTECTED] [EMAIL PROTECTED]
Date: 20 February 1999 00:27
Subject: Re: SAM FAQ Version 2
Heck, I've not seen it running on ANY SAM, never mind a *REAL* one.
Any chance you can put out a demo version, Chris? Time limited
-Original Message-
From: Simon Cooke [EMAIL PROTECTED]
To: [EMAIL PROTECTED] [EMAIL PROTECTED]
Date: 21 February 1999 07:38
Subject: Re: SAM FAQ Version 2
Unorthodox frame sync code? Pray tell! I can only think of a couple of
ways of doing it...
OK. Apologies to everyone because this
-Original Message-
From: Dave Hooper [EMAIL PROTECTED]
To: [EMAIL PROTECTED] [EMAIL PROTECTED]
Date: 22 February 1999 15:54
Subject: Re: Unorthodox Frame Sync
call me mental, but that doesn't seem very unorthodox at all (it's the way
i've always done it, anyway). It's a shame if this
Hi All,
Regarding Simcoupe.
What I'd like to see implemented is the 'screen off' BIT on port 254.
Programs that turn the screen off to switch modes, or use screen area
as a workspace, look so messy when the screen *isn't* being turned off.
Flashes of crap look terrible!!
Wouldn't it be
-Original Message-
From: Simon Cooke (Exchange) [EMAIL PROTECTED]
To: 'sam-users@nvg.ntnu.no' sam-users@nvg.ntnu.no
Date: 24 February 1999 21:27
Subject: SimCoupe
Would make Simcoupe very nice if it could refresh at the proper rate...
I'm willing to go for 60Hz refresh, if the PC can
-Original Message-
From: Andrew Collier [EMAIL PROTECTED]
To: [EMAIL PROTECTED] [EMAIL PROTECTED]
Date: 24 February 1999 22:37
Subject: Re: SimCoupe
I think what Simon was saying, was that the Sam's 50Hz refresh would be
speeded up to 60Hz and kept in time with the refresh rate of the
-Original Message-
From: Dave Hooper [EMAIL PROTECTED]
To: [EMAIL PROTECTED] [EMAIL PROTECTED]
Date: 25 February 1999 14:20
Subject: Re: SimCoupe
I've emulated the saa1099 in software - i just need to collaborate with
someone (anyone) so i can send the output to the soundcard... pretty
Some softyware of mine Simons ECopy , which does copy ALL disks and could
be used as a test etc
Before Malcolm's untimely death he informed me that E-Copy (version 3 I think)
failed to copy the protection I created for Defender... I tried *all* the PC
copiers
I could find and they failed too.
Before Malcolm's untimely death he informed me that E-Copy (version 3 I think)
failed to copy the protection I created for Defender... I tried *all* the PC
copiers I could find and they failed too.
Have you tried Cyclone (using the cart) on an Amiga then? :-)
Dave
I haven't. I'm not familiar
Funnily enough, that's EXACTLY what I've been wanting to do
lately. I've got so many things I want to do for the SAM,
but developing them on the SAM itself, as I find, is so
bloody time-consuming!
[cycle begin]
boot up Pro-DOS.
edit assembler/C program in text editer (ZDE)
assemble (ZAS)
If I page out
the ROM can I use the lower 32k for the screen and the higher 32k for
program . . .
Yes. Andrew's already mentioned IM-1 interrupts, but you'll also need to
stick your screen (assuming a mode-4 screen) in the top 32k if you want to
retain use of the NMI button.
If you're not
Can anyone tell me the accuracy of SimCoupe's mouse emulation
with regards to a *real* SAM mouse?
Chris.
Has anyone had any dealings with Persona in the last couple of months? I
ordered some software 6 weeks ago and still haven't received anything. I've
also tried mailing [EMAIL PROTECTED], but haven't heard anything back
from there either.
Try [EMAIL PROTECTED] or [EMAIL PROTECTED]
One of
Is my mail reaching other SAM users?
Chris.
I, Justin Skists, hereby starts the flood of yes emails.
Thanks!!
-Original Message-
From: Dan Doore [EMAIL PROTECTED]
How do i transfer 'tdo' files downloaded from the net unto sam disks?
You desire the evil Teledisk 2.12 for DOS, search for TELED212.ZIP on your
favoured FTP search engine such as http://ftpsearch.lycos.com/
Be warned, it's been
-Original Message-
From: Si Owen [EMAIL PROTECTED]
Hopefully Persona will be back up and running at some point so I can
re-order
the items (including Defender :-)), but I've been waiting for a message
from
David before I do anything. It's a shame that so many items are stuck
until
-Original Message-
From: Andrew Collier [EMAIL PROTECTED]
But I agree with Si - Defender is still quite new and I don't think it has
had a chance to sell to its entire market yet. Has it ever been for sale
at a Gloucester show, for example?
I'm not sure. I think it was demoed at the
-Original Message-
From: Andrew Collier [EMAIL PROTECTED]
Don't forget that Astroball and Dyzonium are also bundled with Defender...
both superb games too, IMHO (they each got Game Of The Month! in Second
Opinion - see http://mnemotech.ucam.org/zodiac.html for reviews).
Check out the
Hi All,
Some of you may know about SAM DEFENDER and my reluctance to release it because
of the moral issues surrounding Persona, even thought I own all rights to the
program.
Basically I was waiting for David Ledbury's instructions with regards to
Persona.
Now David has left the SAM scene,
-Original Message-
From: Simon Cooke [EMAIL PROTECTED]
To: sam-users@nvg.ntnu.no sam-users@nvg.ntnu.no
Date: 26 August 1999 02:08
Subject: Re: SAM DEFENDER
Ok... so what did you do to it that breaks SimCoupe? :)
A seasoned 'hacker' like yourself will have no trouble cracking it! ;-)
Original Message-
From: Andrew Collier [EMAIL PROTECTED]
To: Sam Users Group sam-users@nvg.ntnu.no
Date: 26 August 1999 09:41
Subject: Re: SAM DEFENDER
Not that I want to be unnecessarily picky, but on the site you say:
LEGAL JARGON:
I'm releasing SAM DEFENDER into the
-Original Message-
From: Thomas Harte [EMAIL PROTECTED]
To: sam-users@nvg.ntnu.no sam-users@nvg.ntnu.no
Date: 27 August 1999 00:38
Subject: Re: SAM DEFENDER
The game images plus some general background information can be found here:
Since no-one else seemed to have, I'll just say :
For those interested I have made the Defender source code available.
http://homepages.enterprise.net/pegasus/defender
Follow the link on the 'Downloads' page.
Chris.
This is no problem: check out:
ftp://ftp.nvg.ntnu.no/pub/sam-coupe/utils/misc/comet2a.pak
ftp://ftp.nvg.ntnu.no/pub/sam-coupe/utils/misc/comet2a.td0
ftp://ftp.nvg.ntnu.no/pub/sam-coupe/utils/misc/comet2a.txt
Nice one!!! Providing you have Comet that is! I don't. Plus, the PC is
a far superior
-Original Message-
From: Si Owen [EMAIL PROTECTED]
To: sam-users@nvg.ntnu.no sam-users@nvg.ntnu.no
Date: 13 September 1999 13:34
Subject: Defender on SimCoupe (Was: Defender Source Code)
I've only just got around to playing this - it's a superb port! I think a
few of us will pay you back
-Original Message-
From: Simon Cooke [EMAIL PROTECTED]
To: samusers sam-users@nvg.ntnu.no
Date: 16 September 1999 00:07
Subject: Source going up
I'm putting a whole chunk of source code online...
Questions:
Anyone object to the following going up?
PRODOS 1st May 1992 source code
Gavin,
Could you e-mail me your address please as I wish to subscribe to SAM Community.
I would have sent you an e-mail direct, but Outlook Express decided *not*
to add your e-mail address to my address book the last time I mailed you, even
though
it's set to do so!
Cheers,
Chris.
Can someone please tell me what's going on?
I've just had to wait while 115, yes *115* messages downloded and they're
nearly all the bloody same...
Is some server set in an infinite loop re-sending the same messages to SAM
Users?
I don't fancy loggin on in a few hours only to have to download
the second issue of Sam Community newsletter, Chris White has
released Sam Defender into the public domain and there are more
people on the sam-users list than I've seen in years.
Chris White *didn't* release SAM Defender... I did!!! ;-)
It's still available here:
Chris - I am *so* sorry, I wrote this before my second coffee of the
morning.
No problem! I haven't had my first yet, so I'm a little ratty! ;-)
It's still available here:
http://homepages.enterprise.net/pegasus/defender/
And a bloody fine game it is - go get it - get it now!
Is that
Aw, go on then, as long as you promise the GPL goblins won't
come and get
me! I've uploaded a new alpha test version to:
http://www.obobo.demon.co.uk/WinCoupe.zip
It's brilliant!
Tim,
Was Amalthea *really* written by Balor Knight??
I can safely say that it wasn't!!
Done. I knew there was at least one group forgotten.
At least one person and game forgotten too, namely me!!
I was the 'other half' of Digital Reality with Balor
Knight. I was the programmer of ProDOS,
At least one person and game forgotten too, namely me!!
Done.
Cheers Tim! I agree with everyone else, the new colourful
format is far more pleasing!
-Original Message-
From: Dave Hooper [mailto:[EMAIL PROTECTED]
I'm a bit disappointed in Aley's SAAEmu 0.61.
1. Credit on the main screen (as requested!). Preferably
immediately below the line that says Z80 emulator by FMS
Aley Keprt, libraries by (c) FMS 1996. If possible, credit
-Original Message-
From: Justin Skists [mailto:[EMAIL PROTECTED]
Sent: 26 November 1999 10:01
To: 'sam-users@nvg.ntnu.no'
Subject: samdsk: thanks.
Oh, And Chris Pile's Defender. Wow! If you haven't played it, play it
now! (Or was I the last one to do so?) But did he have to make it so
-Original Message-
From: Justin Skists [mailto:[EMAIL PROTECTED]
Sent: 26 November 1999 10:45
To: 'sam-users@nvg.ntnu.no'
Subject: defender (was: samdsk: thanks.)
I loved playing the Defender clones, when I was a kid, on the speccy.
Perhaps it is difficult because I'm out of practice...
-Original Message-
From: Justin Skists [mailto:[EMAIL PROTECTED]
Sent: 26 November 1999 10:56
To: 'sam-users@nvg.ntnu.no'
Subject: RE: defender (was: samdsk: thanks.)
How did you manage to get the SAM conversion as close to the original
as possible? Do you actually have a Defender arcade
-Original Message-
From: Dan Dooré [mailto:[EMAIL PROTECTED]
Sent: 26 November 1999 10:53
To: 'sam-users@nvg.ntnu.no'
Subject: RE: defender (was: samdsk: thanks.)
It could be yours for a mere UKP1500
http://www.emuunlim.com/Arcadewarehouse/defender.html with the
buttons or
-Original Message-
From: Si Owen [mailto:[EMAIL PROTECTED]
Sent: 21 December 1999 07:52
To: sam-users@nvg.ntnu.no
Subject: Re[3]: Christmas Greetings, etc.
Frode Tenneboe wrote:
Ditto.
Me too!
Seconded, thirded, forthded... Etc!! ;-)
-Original Message-
From: Ian Collier [mailto:[EMAIL PROTECTED]
Sent: 09 March 2000 12:01
To: 'sam-users@nvg.ntnu.no'
Subject: Re: SAM Community iss 2
Lucky Ladders IIRC :-)
Aye, that's the one.
Used to have a great 70's perm too! ;-)
Here Here!!! I didn't have the bottle to post that! ;-)
-Original Message-
From: Johnna Teare [mailto:[EMAIL PROTECTED]
Sent: Thursday, January 25, 2001 5:22 PM
To: sam-users@nvg.ntnu.no
Subject: RE: Where are YOU now?
yawn yawn yawn - any chance of playing this out in private folks?
Thanks for a great emulator! :)
-Original Message-
From: Simon Owen [mailto:[EMAIL PROTECTED]
Sent: Tuesday, February 27, 2001 12:59 AM
To: sam-users@nvg.ntnu.no
Subject: SimCoupé/Win32 updated to 0.81
Yes indeed, believe you eyes, from our grip, at last you prise...
a new
I need one, but would probably buy a couple providing
they're not too pricey...
-Original Message-
From: Frans van Egmond [mailto:[EMAIL PROTECTED]
Sent: Tuesday, March 13, 2001 10:14 PM
To: sam-users@nvg.ntnu.no
Subject: Re: Possibly New Keyboard membranes
I'm in the process of talking
Hi Stewart,
SAM DEFENDER is freeware and you're welcome to include it on your website. It's
available in several file formats. Feel free to include the files on your
site, or link to
its homepage.
It has moved from its current home to:
http://homepages.tesco.net/~chris.pile/index.htm
If any
who
Evenin' Nev! Things are fine, thanks for asking!! ;-)
- Original Message -
From: Nev Young [EMAIL PROTECTED]
To: sam-users@nvg.ntnu.no
Sent: 12 April 2001 07:41
Subject: Re:
On Wed, 11 Apr 2001 23:54:38 +0100, Chris Pile
[EMAIL PROTECTED] wrote:
who
Good morning Chris. Howz
From your homepage:
SimCoupé is terribly badly written program, that was originally ... [snip]
Ouch But it (SimCoupé) runs Defender, so it gets my vote!!! ;-)
Oh, and Aley get rid of those God-awful pop-up's on your site. There are
few things more annoying than squillions of
Sam Defender is nice. But I can't play it since I can't start it.
Please tell me what hidden combination of keys do it need to?
1. Get to redefine keys menu.
2. Start it.
M, not too sure what you mean here??? From anywhere during the
attract sequence you can press '1' to start a
Of course, Mr.Holmes, it should read http://aley.borec.cz
Yep, definitely better without pop-ups!! ;-)
Chris.
Hi All,
Perhaps some of you would like to know that SAM Defender has been updated.
The update fixes a couple of obscure/rare bugs and also improves the 'close to
the original'
accuracy. These items have been nagging at me for a few years, so it was time
to fix 'em! ;-)
The following changes
After downloading the latest SimCoupé I felt I had to register here and say
what a superb emulator
it has evolved into. A quality piece of work, and many thanks to Simon and his
team for the hours
of work which undoubtedly went into it.
SimCoupé has to be one of the best and most complete
Simon Owen wrote:
Simon Cooke wrote:
Interesting... Defender uses HPEN/LPEN... any idea how it
uses it?
It uses HPEN monitoring to track whether it's running late with the current
frame. I believe it still expects to be over the main screen area after
completing certain tasks, and if
Hi Folks,
I tried emailing Edwin about this, but all email addresses I found for him
simply bounced. So I'm posting
here instead...
Does anyone have programming information for Edwin's SAM Dallas clock module?
Particularly the port
addresses and how to read/write to the Dallas 114-bytes of
Hi Si,
Chris Pile wrote:
I tried emailing Edwin about this, but all email addresses I
found for him simply bounced. So I'm posting here instead...
The last one he used on the list is edwin.blink at home dot nl - if
he doesn't spot this I'll check when he's next on MSN.
No problem. I
Hi Wayne,
Chris.. Hope you are all well. Steve Parry-Thomas is more likely than
most to know how to contact Edwin.
You were quite right! Steve emailed me Edwin's address. However, I won't need
to
bother him now, as all I wanted was the chip's port address. Which I now have!
:-)
Hi SAMsters,
I've updated SAM Defender!
Why?
Well, basically I did all of the things I *should* have done back in '98.
Things that have been
annoying me for years!
Below are a list of the things changed, plus any new features and also a link
to where you can
get this - finally (probably!)
]
To: sam-users@nvg.ntnu.no
Sent: Wednesday, March 21, 2007 9:42 AM
Subject: Re: SAM Defender - Updated and Improved!
Hi Chris.
Great work! Now I know what I saw on the Bunnik new years party what
Edwin wouldn´t tell me.
Was a secret?!
Keep on good work.
Wolfgang
Chris Pile schrieb:
Hi SAMsters
Hi Edwin,
Hi Chris,
Exellent job ! Maybe now I have a better change on getting a real high score
;-)
lol - me too! I was always hopeless at the game! :-)
you had me fooled with the crash effect. I though the diskimage was corruped
until I saw the initial test message :-)
Edwin
:-)
who
Ooops! :-)
Wrong email address! Wanted to check if my old email
address was gone off the list. It is.
snipped huge list
Awesome! I'm amazed you found so many things to improve upon, as I
don't remember any real differences from the arcade version.
There are still one or two areas left which I could tweak - but I probably won't
as they are pretty trivial. Well, until the mood takes me again!
CA - Original Message -
CA From: Calvin Allett [EMAIL PROTECTED]
CA To: sam-users@nvg.ntnu.no
CA Sent: Sunday, May 20, 2007 10:41 AM
CA Subject: RE: Car game
CA ... Surprised more MC`ers don`t have a dabble with Basic more often tbh :D
Well you know what they say - when you've
Pro-Dos uses the same floppy-disk format as Amstrad's PCW 8256 - and it will
read original PCW
disks. Of course, they need to be 3.5 disks rather than Amstrad's 3 format.
;-)
Steve is correct in saying that Pro-Dos simply soaks up all available SAM RAM
for its RAM-disk.
If I remember, the
I do all my SAM development on the PC, using a cross-assembler. For SAM
development I
chose the AS80 PC cross-assembler... Works a treat! It's free, and you can
grab it here:
http://www.kingswood-consulting.co.uk/assemblers/
My editor of choice is StarBase's CodeWright 6.5 - which is great.
Hi Ron,
Sorry I can't help you in your search, but I'd be interested in seeing your Quix
remakes - but can't find them on NVG. I started writing a version of QIX back
around 1998 - the plan was to make it as arcade perfect as I could. Sadly,
the combination of me being a lazy git - and having one
Hi Ron,
Sorry I can't help you in your search, but I'd be interested in seeing your Quix
remakes - but can't find them on NVG. I started writing a version of QIX back
around 1998 - the plan was to make it as arcade perfect as I could. Sadly,
the combination of me being a lazy git - and having
Hi Ron,
Many thanks for that - Wolfgang sent a link to your software - thanks Wolfgang!
Your game Quix is a very different beast to the arcade game Qix - in fact, only
the name
is similar! Apparently the arcade version is pronounced kicks - but I always
pronounce
it quicks ;-)
Your game is
Re: code, I really don't think that cycle pinching is the main problem — I think it's algorithmic. I'm going to need
to think about that a bit more. At the minute I'm a bit indoctrinated as to how I think a 3d pipeline should go, and
I may need to rethink that.
Sometimes you have to take
OT - slightly!
It's great to see all the recent activity on the list and in the SAM scene -
both in programming
and hardware!
It's *almost* enough to make you want to crack open a copy of CodeWright and
start knocking
out some Z80! Seriously, well done chaps it's great to see the little SAM
- Original Message -
From: Thomas Harte [EMAIL PROTECTED]
To: sam-users@nvg.ntnu.no
Sent: Tuesday, October 07, 2008 7:25 PM
Subject: Re: New projects Byte-Back 2009
TH Obviously this leaves a whole bunch of massive holes in what I can
TH show; is anybody able to loan copies of
Hi folks...
There was a thread a while ago mentioning the SAM's 20th birthday. When
exactly is
the 20th anniversary of the machine?
Chris...
Hi Wayne!
Yep - seems like it was early if it was around December time... Memory isn't
too good these days! ;-))
I have a couple of projects I started 10+ years ago, but never finished. It
would be nice to complete
one of these in time for the SAM's birthday.
I've just been made redundant
Blimey, this list's getting busier!!
THE_WUB WROTE:
As for my coding antics, as a newbie I doubt there is much I can
provide except for laughs :) But I can definitely write a little
about the system I've come up with for arranging my data, maybe with a
view to someone more experienced pointing
- Original Message -
From: da...@p.ard.co.uk
I've a copy of the Rodney Zak's book going for a reasonable price soon :)
Lol - I've still got a copy of that book lying about somewhere! But I don't
think the old memory
has gone that far... Yet!! ;-)
I think I can still
- Original Message -
From: Andrew Park alp...@..com
Sent: Friday, August 07, 2009 12:06 PM
AP Hello All,
AP
AP Good to see some activity on here.
AP
AP It would be interesting to know what projects people are working on I have a
AP Hunchback game in progress ...
I'd like
Leaving the SAM scene?
- Original Message -
From: da...@properbastard.co.uk
To: sam-users@nvg.ntnu.no
Sent: Monday, August 10, 2009 12:24 AM
Subject: unsubscribe
please can some one unsubscribe me.
thanks
ps: good deal on a sam in a can - and a pile of software - please
speak to
Great achievement with the TCP/IP stuff!!
Now who's going to be the first to post a tweet on Twitter using a real SAM!!
It's already been
done on the Speccy, and I imagine the Twitter protocol is quite trivial...
Would be good to see!
Chris...
Just a quick glimps of the code shows you can save 8-clocks every
itteration of your plotloop by getting rid of the SET 7,D instructions
and putting a SCF before a RR D instruction. Replacing the SRL D's
with RR D's.
But as you're not likely to be using this particular plotloop in the final
Dizzy... Arrggh!! I loathe those games! :-))
Rob, if I were you I would be inclined to write your own code rather than try
to disassemble the
originals. The complexity and/or limit pushing of the original game will
have a direct bearing on
whether the original code is likely to be
Just a quick question regarding memory contention on the SAM and its effect on
JP and the
*unconditional* JR instruction.
Z80 timing lists state that JP takes 10 T-States whereas an *unconditional* JR
takes some
12 T-States. However, does the SAM's memory contention make all
*unconditional*
Hi Si,
In a word... Wow! I hadn't realised there was such a performance hit using JP
over JR!
A 24T JP is painful! I've always used JP - assuming (naively) that it was
faster based on
Z80 T-state lists.
So all these years I've been crippling my code with JPs when I should have used
JRs!
Hi Si,
Yep - clear as mud! :-)
Seriously, many thanks for the explanation - even my hardware-limited brain
managed
to understand all that! I take my hat off to hardware designers, it's
certainly a black art!
I've always tried to keep as much as I can in registers, so I've always been on
Mmmm, not sure I would have like hardware scrolling to be honest. It would
probably
have meant a glut of scrolling marioesque platform games. Which - for me - is
a whole
lot less desirable than infinite ball demos!
Some sort of blitter to chuck large blocks of data around at high speed would
I'm not sure having only a basic ability to shift the screen around would have
been much use without
additional hardware support. Such as sprites for example. Having to render
lots of software sprites
over nothing more than a shiftable 24k lump of RAM would get very messy code
wise.
You keep spamming on about a PUSH proportional print routine - why don't you
write your own? It really isn't that difficult you know. And why have you got
it in
your head that PUSH is the way to go with this???
Sure, PUSH can dramatically speed up certain graphic-dumping operations - but
Have to send a me too post - really impressed. Love the graphics.
That's two good new SAM games in the last year (Rob's Garden Centre
Of The Universe game being the other one) - what's going on?!
I agree 100%! It's quite worrying... But inspiring all the same. Maybe it's
time for us
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