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by Steven Seagal
Fri Dec 08, 2017 7:59 pm
Forum: Steem
Topic: Help getting SSE running on this machine
Replies: 10
Views: 410

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: 783

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: 410

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: 1
Views: 124

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: 9813

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: 19029

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: 9813

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: 9813

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: 214

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: 170

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: 87334

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: 95
Views: 18702

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: 9813

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: 95
Views: 18702

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: 9813

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: 1834

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

Nah, he will announce the release of Steem SSE 3.9.4.
by Steven Seagal
Thu Nov 30, 2017 10:00 am
Forum: Support
Topic: Steem 3.9.3 problem
Replies: 45
Views: 2617

Re: Steem 3.9.3 problem

Zamuel_a wrote:When I run 3.9.3 on my laptop and wakes it up after hybernation I get error: BLIT ERROR and I must restart Steem.


I don't claim it's definitely fixed, but there are chances the new 3.9.4 version can recover from BLIT ERROR.
by Steven Seagal
Thu Nov 30, 2017 9:57 am
Forum: Development
Topic: Steem SSE 3.9
Replies: 107
Views: 13970

Re: Steem SSE 3.9

Steem SSE 3.9.4 was released on 30/11/2017. v3.9.4 Features _________________ - Dongles: Jeanne d'Arc (French). - A DirectDraw build of the Boiler is now available. - Notice: Option 'Alt YM2149 emu' (MAME-like PSG emulation) moved to sound page. Option 'Machine/Wake-up' is now persistent (and the de...
by Steven Seagal
Wed Nov 29, 2017 4:20 pm
Forum: Hardware
Topic: How I found some original Atari ST ASIC designs
Replies: 79
Views: 9813

Re: How I found some original Atari ST ASIC designs

Is this not exactly what I've deduced before? It's nice to see it confirmed by the schematics of course :) It's also the reason for the (so far not used by anyone I believe) +4 and +6 lines possible to create on STE. From the writeup on the wiki: The following pseudo code describes how PRELOAD gets...
by Steven Seagal
Wed Nov 29, 2017 3:35 pm
Forum: Hardware
Topic: How I found some original Atari ST ASIC designs
Replies: 79
Views: 9813

Re: How I found some original Atari ST ASIC designs

Yep, it is easier to read schematics :) He he :mrgreen: DPR and DPS are synchronous flip flops with async reset and (pre)set respectively. The circuit at the output with the two NOR gates is an SR-latch. That's the register that actually holds the state of the internal HSYNC signal. Thx again... Do...
by Steven Seagal
Mon Nov 27, 2017 10:15 pm
Forum: Hardware
Topic: How I found some original Atari ST ASIC designs
Replies: 79
Views: 9813

Re: How I found some original Atari ST ASIC designs

So I could match the horizontal sync generator schematic on sheet 26 with some of ijor's pseudo-code (values 101, 111, 121, 127...). Guess it's easier with the blueprints than looking directly at the chip. :) But on the right of the "comparators", there are rectangles called DPR and DPS. O...
by Steven Seagal
Sun Nov 26, 2017 6:14 pm
Forum: Hardware
Topic: How I found some original Atari ST ASIC designs
Replies: 79
Views: 9813

Re: How I found some original Atari ST ASIC designs

OK thx, it starts to make sense.
There's also MDE1 and MDE1B for example: bit 1 of shift mode set and cleared respectively.
I'll try to match this sheet with your pseudo-code for HSYNC and come back with more questions.
One last today: what could be the ubiquitous PORB?
by Steven Seagal
Sun Nov 26, 2017 4:50 pm
Forum: Hardware
Topic: How I found some original Atari ST ASIC designs
Replies: 79
Views: 9813

Re: How I found some original Atari ST ASIC designs

Thx. Funny but my google searches didn't deliver. :shrug: Do you reckon the schematics are precise and complete enough to write a GLUE-MCU video logic for emulation? Too bad the STE Shifter is still a black box. I don't know if you plan to release some analysis in the near future, in that case there...
by Steven Seagal
Sun Nov 26, 2017 2:31 pm
Forum: Development
Topic: Steem SSE 3.9
Replies: 107
Views: 13970

Re: Steem SSE 3.9

To be fair we all do what we can but giving support isn't much fun compared with improving emulation or introducing exciting features. I certainly didn't branch Steem to give support but that's the way it is. :mrgreen:
by Steven Seagal
Sun Nov 26, 2017 2:23 pm
Forum: Hardware
Topic: How I found some original Atari ST ASIC designs
Replies: 79
Views: 9813

Re: How I found some original Atari ST ASIC designs

Hi
Has somebody analysed the schematics for the GLUE-MCU?
Did I miss the thread?
I've started doing it but not being in the field, I've more questions than answers... :shrug:
For instance, what are those trapeziums called "SAB"?

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