At 22:26 14/08/01, Si Owen wrote:
You'll certainly see the extra delays when writing to ports 248 and
above, or when the ASIC is drawing the main screen area. I'm confident
that the current SimCoupé is already accurate enough for you to be able
to develop your Mode 4 IM2 routines on it and have
Howard Price wrote:
Thanks for this info. Surprisingly, I'm still using my *real
SAM* to program on right now
My real one is fairly inconvenient to use - I need access to the main
TV, and I have to put it back in it's box so my wife doesn't complain
about it being untidy! :-D
I
Howard Price wrote:
Do you know how many T-states you get a frame, then?
There are always 384 t-states per line for the 312 screen lines = 119808
t-states.
Pref. with memory contention in Mode 4
Just writing a timing program in IM2
Unfortunately it's not that simple to work out! :-/
At 11:59 10/08/01, you wrote:
Real SAM:
MODE 1: ROM=5.986, RAM=4.428
MODE 2: ROM=5.988, RAM=4.883
MODE 3 and 4 (video on): ROM=5.988, RAM=4.883
MODE 3 and 4 (video off): ROM=5.988, RAM=5.561
Si
Do you know how many T-states you get a
- Original Message -
From: Simon Cooke [EMAIL PROTECTED]
To: sam-users@nvg.ntnu.no
Sent: Friday, August 03, 2001 5:52 PM
Subject: Re: Sam Copue - good or bad desing [Was: Re: Sam CPU timing]
From: Aley Keprt [EMAIL PROTECTED]
Okay, this would be long, long, long.
Please read whole
Thanks David - much appreciated :)
Si
- Original Message -
From: David Ledbury [EMAIL PROTECTED]
To: sam-users@nvg.ntnu.no
Sent: Friday, August 10, 2001 4:19 PM
Subject: Re: Sam Copue - good or bad desing [Was: Re: Sam CPU timing]
- Original Message -
From: Simon Cooke
, 2001 4:33 PM
Subject: RE: Sam CPU timing
Aley Keprt wrote:
I didn't write CPU core for ASCD, don't you know?
I never said you did... I just posted a complete set of figures for
what you posted a few days ago, partly to correct the SimCoupé value you
quoted. I also wanted to challenge your
Aley Keprt wrote:
Yes, there are many bugs.
I have a special test software which gives 4.8MHz speed on
real Sam and 3.17 on SimCoupe.
ASCD shows only 2.72MHz. Eh
I did some tests last night using my real SAM, SimCoupé 0.81a and ASCD
0.90 WIP 1. I get very different results from yours
]
--
- Original Message -
From: Simon Owen [EMAIL PROTECTED]
To: sam-users@nvg.ntnu.no
Sent: 10. srpna 2001 12:59
Subject: RE: Sam CPU timing
Aley Keprt wrote:
Yes, there are many bugs.
I have a special test software which gives 4.8MHz speed on
real Sam and 3.17 on SimCoupe.
ASCD shows only
Aley Keprt wrote:
I didn't write CPU core for ASCD, don't you know?
I never said you did... I just posted a complete set of figures for
what you posted a few days ago, partly to correct the SimCoupé value you
quoted. I also wanted to challenge your statement that the SimCoupé
result was
First Aley wrote:
Look Simon you have a problem. You can't stand anybody saying truth...
Then Simon wrote:
Whatever... *sigh*... No, Mr. Smarty Superior Pants, ...Well DUH
Can we save the insults for after the discussion? I'm interested in your
views without the playground stuff.
-users@nvg.ntnu.no
Sent: Friday, August 03, 2001 4:01 PM
Subject: RE: Sam CPU timing
Aley Keprt wrote:
I don't have source code. It was published in binary form in
a diskmag.
A binary would be fine - just something that can demonstrate a
difference.
Si
Sent: Friday, August 03, 2001 2:28 PM
Subject: Re: Sam Copue - good or bad desing [Was: Re: Sam CPU timing]
Aley Keprt wrote:
The question is what is Mikrobaze? Shall I know it?
Hmmm... Amateur radio and home computers (both 8bit and 16bit) magazine
from Czechoslovakia.
...as you can
From: Simon Cooke [EMAIL PROTECTED]
From: Aley Keprt [EMAIL PROTECTED]
As for Mode 1 timing, the SAM is deliberately slowed down in Mode 1.
But the question is how this is done, when it is automatically turned
off
when saving to tape. I mean when you load ZX-ROM and type LOAD you are
On Fri, 3 Aug 2001 00:00:08 +0100 Fri, 3 Aug 01 00:03:27 BST, David
Ledbury [EMAIL PROTECTED] wrote:
No
Apologies, I thought it might have. :-)
Dave
(have u got fed up with clara then?)
i change isps as regular as my socks
2 times a year at least
- Original Message -
From: Dave Whitmore [EMAIL PROTECTED]
To: sam-users@nvg.ntnu.no
Sent: Friday, August 03, 2001 12:04 AM
Subject: Re: Sam CPU timing
On Fri, 3 Aug 2001 00:00:08 +0100 Fri, 3 Aug 01 00:03:27 BST, David
Hi out there.
Because of lack of membranes one of our SPC members, Dirk Berghoefer started to
do this. He used a Commodore box to fix the SAM and does all parts as harddisk,
mouse-if, comms-if inside, also he realised an external keyboard.
All this was shown at the Z-Fest in Germany, a meeting of
On Wed, 1 Aug 2001 00:47:45 +0200, Aley Keprt
[EMAIL PROTECTED] wrote:
snip long commentary
As I remember it, all the sam memory is running in contended mode,
except when the display is turned off, so there is no chance of
getting the full 6MHz from it.
Further when mode 1 is selected
Aley Keprt wrote:
Although Win32 SimCoupe does good effort in praxis, a
theoretical documentation would be great!
There were plans for that, tho it hasn't actually been started yet! It
would (er, _will_!) be nice to have a definitive guide to explain all
the timings involved for contention,
Aley Keprt wrote:
[...]
To make things much simpler, I said that it would be nice to have just one
thing: divided memory into fast ram and videoram. btw. This is used on Amiga
as well, doesn't matter that it is 16bit, because memory is the same
regardless of number of bits.
Do not you
Aley Keprt wrote:
Yes, there are many bugs.
I have a special test software which gives 4.8MHz speed on
real Sam and 3.17 on SimCoupe.
That's quite a big percentage different - most strange. I can only
think that it's relying (at least partly) on one of the missing features
I mentioned
2001 13:27
Subject: Re: Sam Copue - good or bad desing [Was: Re: Sam CPU timing]
Aley Keprt wrote:
[...]
To make things much simpler, I said that it would be nice to have just
one
thing: divided memory into fast ram and videoram. btw. This is used on
Amiga
as well, doesn't matter
PROTECTED] *** http://get.to/aley
office: Illusion Softworks, Brno, CZ - [EMAIL PROTECTED]
--
- Original Message -
From: Simon Owen [EMAIL PROTECTED]
To: sam-users@nvg.ntnu.no
Sent: 3. srpna 2001 13:49
Subject: RE: Sam CPU timing
Aley Keprt wrote:
The question is what is Mikrobaze? Shall I know it?
Hmmm... Amateur radio and home computers (both 8bit and 16bit) magazine
from Czechoslovakia.
...as you can see, even if it was there, I can't knew it...
That's strange because it was very nice magazine.
Aley
Aley Keprt wrote:
I don't have source code. It was published in binary form in
a diskmag.
A binary would be fine - just something that can demonstrate a
difference.
Si
From: Aley Keprt [EMAIL PROTECTED]
Okay, this would be long, long, long.
Please read whole before replying. And be sure if you will delete all my
good comments, and reply only to a few bad mistakes, I will write it
again.
I think this all must be understand as a whole, not partially!
-Oorspronkelijk bericht-
Van: David L [EMAIL PROTECTED]
Aan: sam-users@nvg.ntnu.no sam-users@nvg.ntnu.no
Datum: woensdag 1 augustus 2001 22:51
Onderwerp: Re: Sam CPU timing
Nice to see people speaking about SAM related stuff - even if to moan
about
it's design!
Speaking of which - has
On Wed, 1 Aug 2001 00:47:45 +0200, Aley Keprt
[EMAIL PROTECTED] wrote:
snip long commentary
As I remember it, all the sam memory is running in contended mode,
except when the display is turned off, so there is no chance of
getting the full 6MHz from it.
Further when mode 1 is selected the CPU
From: Aley Keprt [EMAIL PROTECTED]
Although I don't understand how does it work, I'm sure that we are facing
a
very terrible
computer design, which has underdimensed system bus, resulting in a large
speed loss (upto
32%). This is similar to modern PC computers with Pentium 3 running at
- Original Message -
From: Simon Cooke [EMAIL PROTECTED]
To: sam-users@nvg.ntnu.no
Sent: Wednesday, August 01, 2001 6:45 PM
Subject: Re: Sam CPU timing
(running a 1.4Ghz AMD T-bird with 0.5Gb of RAM these days... and not
noticing any memory contention at all)
Only a one Gig myself
- Original Message -
From: David Ledbury [EMAIL PROTECTED]
To: sam-users@nvg.ntnu.no
Sent: Wednesday, August 01, 2001 9:51 PM
Subject: Re: Sam CPU timing
- Original Message -
From: Simon Cooke [EMAIL PROTECTED]
To: sam-users@nvg.ntnu.no
Sent: Wednesday, August 01, 2001 6:45
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