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by Steven Seagal
Sat Dec 16, 2017 7:19 am
Forum: Coding
Topic: ST Chipset decap
Replies: 98
Views: 18922

Re: ST Chipset decap

The inversions are probably confusing you. Always! And there are a lot on schematics. It doesn't matter too much if Shifter outputs anything or not, it might still be relevant because the pixel counter is affected. It uses a standard stabilizer? It uses a med res stabilizer, but not always. [R res ...
by Steven Seagal
Fri Dec 15, 2017 9:58 pm
Forum: Coding
Topic: ST Chipset decap
Replies: 98
Views: 18922

Re: ST Chipset decap

SHIFTER clock generator: Thx. Still some trouble reading schematics. I suppose the rightmost gate is a (N)OR and the 3 left of it are (N)ANDs? Note that the clock mux doesn't output ANYTHING AT ALL if both bits of the rez registers are set. No clock would be generated and almost all Shifter process...
by Steven Seagal
Fri Dec 15, 2017 7:09 pm
Forum: Steem
Topic: STEEM SSE Blitter bug
Replies: 14
Views: 443

Re: STEEM SSE Blitter bug

attached is zip file with program file and screencaptures on steem 3.9.1.debug, hatari 2.0.0 and pic off monitor on real ste with 2 megs. But reproduced & acknowledged :) On v3.9.4, TOS162UK Excuse me if I sounded so sceptical but it seemed a big bug that would have been noticed already, and I ...
by Steven Seagal
Thu Dec 14, 2017 6:29 pm
Forum: Support
Topic: STEEM D3D Blit Error with Mirillis Action
Replies: 21
Views: 984

Re: STEEM D3D Blit Error with Mirillis Action

About BLIT ERROR, the improvement in v3.9.4 is that Steem shouldn't hang on such problem. On *my* computer, if a screen saver messed up Steem, for example, by stopping and playing, video emulation resumes. But that's no promise as there are so many configurations. :mrgreen:
by Steven Seagal
Thu Dec 14, 2017 6:25 pm
Forum: Steem
Topic: STEEM SSE Blitter bug
Replies: 14
Views: 443

Re: STEEM SSE Blitter bug

An example where Steem SSE goes wrong and not a real STE would be nice.
MOVE CCR,D0 is illegal on the MC68000, or at least I think so.
So I'm not sure those are real bugs due to changes, even hacks, causing unexpected errors, and that's what I meant, not offense.
by Steven Seagal
Thu Dec 14, 2017 5:32 pm
Forum: Support
Topic: STEEM D3D Blit Error with Mirillis Action
Replies: 21
Views: 984

Re: STEEM D3D Blit Error with Mirillis Action

Thx. Notice the current version is 3.9.4, in any case...
I have a similar intermittent problem with 'Alt YM2149 Emu'. To fix it I stop and play.
Unfortunately I haven't found the reason yet.
Could be the 3rd party filter. :angel:
by Steven Seagal
Thu Dec 14, 2017 8:55 am
Forum: Steem
Topic: STEEM SSE Blitter bug
Replies: 14
Views: 443

Re: STEEM SSE Blitter bug

No, I'm used to you recommending Steem 3.2 instead of Steem SSE by now.
People use whatever works for them, Steem 3.2, Hatari, Saint...
As far as I'm concerned, there's no Steem SSE bug until I could reproduce/acknowledge it.
by Steven Seagal
Thu Dec 14, 2017 7:57 am
Forum: 680x0
Topic: 68000 weird out of order reads?
Replies: 9
Views: 358

Re: 68000 weird out of order reads?

But then it's just normal prefetch at work? I was thinking maybe it was a special case revealed by microcodes (and beginning to panic :) ).

Maybe the last prefetch is missing in OP:

Code: Select all

1  FC0036
2  FC0038
3  FC003A
4  FC003C
5  FC003E
6  FC0040
7  FA0000
8  FA0002
9  FC0042
by Steven Seagal
Wed Dec 13, 2017 8:31 pm
Forum: 680x0
Topic: 68000 weird out of order reads?
Replies: 9
Views: 358

Re: 68000 weird out of order reads?

Here's the YACHT table for CMPI: ------------------------------------------------------------------------------- | Exec Time | Data Bus Usage CMPI | INSTR EA | 1st Operand | 2nd OP (ea) | INSTR ------------------+-----------------+-------------+-------------+-------------- #<data>,<ea> : | | | | .B ...
by Steven Seagal
Fri Dec 08, 2017 7:59 pm
Forum: Steem
Topic: Help getting SSE running on this machine
Replies: 10
Views: 453

Re: Help getting SSE running on this machine

Please call it Steem SSE, not just SSE. The need for VC++ 2008 is mentioned in the manual. Steem SSE requires an SSE-enabled processor and the Visual C++ 2008 Redistributable, which is already installed on most computers. Yes, each successive version requires its set. It's just a matter of adding so...
by Steven Seagal
Thu Dec 07, 2017 10:18 pm
Forum: Support
Topic: Graphical glitches in 3.9.3 linked to "Wake up" state
Replies: 17
Views: 817

Re: Graphical glitches in 3.9.3 linked to "Wake up" state

OP gave more feedback on another forum on 21 November 2017. Quoted for the record as I changed an option to accommodate him, and because the second paragraph is funny (I guess he's a useful contributor). http://eab.abime.net/showthread.php?s=e803e57613d4f45c2f1029e4aa425b54&t=89546&page=2 I'...
by Steven Seagal
Thu Dec 07, 2017 4:17 pm
Forum: Steem
Topic: Help getting SSE running on this machine
Replies: 10
Views: 453

Re: Help getting SSE running on this machine

As stated elsewhere in this forum, the Visual C++ 2008 "redistributable" is probably missing. Steem SSE can run on an XP machine.
by Steven Seagal
Wed Dec 06, 2017 5:06 pm
Forum: Support
Topic: Steem (build 29-11-2017) TOS issues
Replies: 2
Views: 189

Re: Steem (build 29-11-2017) TOS issues

I just runned latest version of Steem and found some issues, when tested it: Test pack: http://coraksoft1.narod.ru/temp/steem/Steem_test1.7z Tos162.img (STE) - Directory window too big in width, so cannot be changed or moved: http://picsee.net/upload/2017-12-06/863cfff24aba.png Is it a new problem ...
by Steven Seagal
Wed Dec 06, 2017 12:39 pm
Forum: Hardware
Topic: How I found some original Atari ST ASIC designs
Replies: 79
Views: 9850

Re: How I found some original Atari ST ASIC designs

Hi, maybe it's not the right thread. I gave the answers you're looking for in an ST demo: http://ataristeven.exxoshost.co.uk/images/SSE35.png (click for better visibility) http://ataristeven.exxoshost.co.uk/Steem_demos3.htm#SSE3.5 "Getting somewhat chubby for action movies... Steven Seagal deci...
by Steven Seagal
Wed Dec 06, 2017 7:11 am
Forum: Website Discussions
Topic: Forum submit post problem
Replies: 26
Views: 19095

Re: Forum submit post problem

Often get HTTP 500 when posting, using IE11.
by Steven Seagal
Wed Dec 06, 2017 7:10 am
Forum: Hardware
Topic: How I found some original Atari ST ASIC designs
Replies: 79
Views: 9850

Re: How I found some original Atari ST ASIC designs

Oh no, never mind. It was in case you already had notes for that, it can wait.

EDIT In fact your Shifter insights would be more useful for the moment.
by Steven Seagal
Tue Dec 05, 2017 8:15 pm
Forum: Hardware
Topic: How I found some original Atari ST ASIC designs
Replies: 79
Views: 9850

Re: How I found some original Atari ST ASIC designs

STFm GLUE considers BLANK as a relevant signal for monochrome as well (even when at board level is not) and applies similar logic as for the color frequencies. Here, according to those schematics, high rez asserts BLANK regardless the horizontal position, as you are saying. Switching to color will ...
by Steven Seagal
Sun Dec 03, 2017 7:24 am
Forum: Steem
Topic: Steem 3.9.4
Replies: 3
Views: 226

Re: Steem 3.9.4

Hi, 16bit means the sound option in Steem, compare v3.9.3 and 3.9.4! Pro Sound Designer is 8bit. Yes Steem 3.9.4 was released, the announcement is there but it didn't catch attention: http://www.atari-forum.com/viewtopic.php?f=94&t=30908&p=333222 It may be a problem that it's buried in a lon...
by Steven Seagal
Sat Dec 02, 2017 12:46 pm
Forum: Support
Topic: Mouse Pointer keeps moving
Replies: 2
Views: 179

Re: Mouse Pointer keeps moving

Hi,
You can also copy/paste the content.
I suggest trying with the new version 3.9.4, there was a mouse pointer fix.
If it doesn't help you can try:
- change mouse speed on the 'joysticks' page
- with option SSE / VM-friendly mouse
- without option SSE / C1
by Steven Seagal
Fri Dec 01, 2017 6:44 pm
Forum: Coding
Topic: horizontal scrolling on ST
Replies: 569
Views: 87686

Re: horizontal scrolling on ST

It is the "4bit" technique, with some different timings maybe. Tends to produce Shifter bands on my STE.
by Steven Seagal
Thu Nov 30, 2017 5:27 pm
Forum: Coding
Topic: ST Chipset decap
Replies: 98
Views: 18922

Re: ST Chipset decap

ijor wrote:It is pixel clocks. In the simulation I posted it's one cycle and a half. But that really depends on the SHIFTER wakeup.


Argh! That's bad news, as the Shifter can run at 32 mhz (4 times our reference cycles in emulation).
The Shifter emulation should run at 64mhz if we use an integer counter.
by Steven Seagal
Thu Nov 30, 2017 5:22 pm
Forum: Hardware
Topic: How I found some original Atari ST ASIC designs
Replies: 79
Views: 9850

Re: How I found some original Atari ST ASIC designs

ijor wrote:As I keep saying, there are all sort of delays in hardware.


Yes, but I thought all delays were quite arbitrary, this one is clocked, precisely to avoid some arbitrary drift I guess.
It's good news for me (in an emulation perspective) :)
by Steven Seagal
Thu Nov 30, 2017 3:48 pm
Forum: Coding
Topic: ST Chipset decap
Replies: 98
Views: 18922

Re: ST Chipset decap

Not sure that question makes much sense hardware wise. There are all sort of delays and pipelines in hardware, that's why the simulation waveforms are very useful. Are you asking if there is a delay since the fourth LOAD? No, I've seen that there is such delay (2 pixel clocks?) apparently, but I wa...
by Steven Seagal
Thu Nov 30, 2017 3:39 pm
Forum: Hardware
Topic: How I found some original Atari ST ASIC designs
Replies: 79
Views: 9850

Re: How I found some original Atari ST ASIC designs

The output of a flip flop changes at the active clock edge. Assuming the input changes at the same clock and edge (it doesn't have to), yes, the output follows one cycle later. I was thinking about the DPR ref. PT030 in Sheet 29 that gets the "start line" decision as input. The counter (N...
by Steven Seagal
Thu Nov 30, 2017 3:16 pm
Forum: News & Announcements
Topic: I, Zarchos, have a major announcement that will
Replies: 34
Views: 1940

Re: I, Zarchos, have a major announcement that will

Nah, he will announce the release of Steem SSE 3.9.4.

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