Search found 48 matches

by Smonson
Sat Nov 11, 2017 1:56 pm
Forum: Games - General
Topic: ST Games based on D&D or AD&D?
Replies: 9
Views: 365

Re: ST Games based on D&D or AD&D?

The game Hillsfar was an official AD&D product, it wasn't too bad, although as a kid I never got anywhere in it.
by Smonson
Fri Nov 10, 2017 10:15 pm
Forum: Hardware
Topic: STFM to DVI/HDMI project
Replies: 39
Views: 2009

Re: STFM to DVI/HDMI project

More info, please. Great job ! :cheers: Thanks Atarieterno! I don't know what I can tell you that I haven't already said... this photo is just the latest progress update, now that I've got the colour modes working. Next I need to wait for new PCBs to come from the fabricator, because I stuffed up s...
by Smonson
Fri Nov 10, 2017 12:56 pm
Forum: Hardware
Topic: STFM to DVI/HDMI project
Replies: 39
Views: 2009

Re: STFM to DVI/HDMI project

Image
by Smonson
Mon Nov 06, 2017 12:08 pm
Forum: Hardware
Topic: STFM to DVI/HDMI project
Replies: 39
Views: 2009

Re: STFM to DVI/HDMI project

Update: this is running OK on my first set of properly-fabricated circuit boards. Screenshot of mono desktop (ignore the green colour):

Image
by Smonson
Sun Oct 22, 2017 10:50 pm
Forum: Hardware
Topic: STFM to DVI/HDMI project
Replies: 39
Views: 2009

Re: STFM to DVI/HDMI project

Hi Michael960, Sorry to hear you weren't able to get that working, it sounds like you were well on the way to success there. I am indeed replacing the shifter, it simplifies a lot of things. These are the timings I'm using for 50Hz: `define H_WIDTH 1024 `define H_ACTIVE 640 `define H_FRONT_PORCH 16 ...
by Smonson
Tue Oct 17, 2017 5:47 am
Forum: Hardware
Topic: STFM to DVI/HDMI project
Replies: 39
Views: 2009

Re: STFM to DVI/HDMI project

I've got it on a DVI connector, which is way easier to hand solder... although still not what I'd call "easy".
by Smonson
Mon Oct 16, 2017 11:15 pm
Forum: Hardware
Topic: STFM to DVI/HDMI project
Replies: 39
Views: 2009

Re: STFM to DVI/HDMI project

Just a generic EP2C5 mini-board, they are great!
by Smonson
Mon Oct 16, 2017 12:22 pm
Forum: Hardware
Topic: STFM to DVI/HDMI project
Replies: 39
Views: 2009

Re: STFM to DVI/HDMI project

Wow, I just found that thread by SainT - his project and mine are incredibly similar. I hope I don't fall into the same trap that stopped him from finishing it (I don't have kids so that's a start).
by Smonson
Mon Oct 16, 2017 12:14 pm
Forum: Hardware
Topic: STFM to DVI/HDMI project
Replies: 39
Views: 2009

Re: STFM to DVI/HDMI project

I see. Well, I guess if they expose all the shifter's buses and control lines then they could work!

But first I have to make this one work reliably.
by Smonson
Mon Oct 16, 2017 8:38 am
Forum: Hardware
Topic: STFM to DVI/HDMI project
Replies: 39
Views: 2009

Re: STFM to DVI/HDMI project

Great stuff. 2 questions: 1) What about border&other trick effects? 2) What about STE? With video mode 720x480 I can get 40 pixels per side to make room for overscan techniques... I don't actually know the full resolution of the frame with full border overscan techniques. It may be possible to ...
by Smonson
Mon Oct 16, 2017 8:34 am
Forum: Hardware
Topic: STFM to DVI/HDMI project
Replies: 39
Views: 2009

Re: STFM to DVI/HDMI project

Are you sure? Where do you see that in the specs? In the specs I have (not the latest that are not public) I don't see that. I do see some modes at 50Hz listed in the specs. But if I read the specs correctly, those modes are mandatory only as long as 50Hz is supported at all. ...actually, that does...
by Smonson
Mon Oct 16, 2017 2:38 am
Forum: Hardware
Topic: STFM to DVI/HDMI project
Replies: 39
Views: 2009

Re: STFM to DVI/HDMI project

My question had to do with the frequency of the HDMI connection. Some people claim that some TVs/monitors are very picky and expect the exact HDMI specifications which requires very specific dot clocks. There is also some debate how much (un)common are US TVs that accept 50 Hz from the HDMI interfa...
by Smonson
Sun Oct 15, 2017 11:56 pm
Forum: Hardware
Topic: STFM to DVI/HDMI project
Replies: 39
Views: 2009

Re: STFM to DVI/HDMI project

Thanks for all the good vibes :D Mostly out of curiosity, can you share some technicals? Glad to. This is at heart a scan doubler, so there are two buffers for scanlines, which are alternately written to or read from, and there is a one-scanline delay introduced. The FPGA is running on a 32MHz clock...
by Smonson
Sun Oct 15, 2017 9:28 am
Forum: Hardware
Topic: STFM to DVI/HDMI project
Replies: 39
Views: 2009

Re: STFM to DVI/HDMI project

Here's a better pic. http://smonson.com/unmanaged/atari/20171015_200234.jpg The next bit of progress will probably be after I get proper boards made. Right now, there's so much electromagnetic noise on the data lines that my prototype (which is connected to the shifter socket through an 8cm long rib...
by Smonson
Sun Oct 15, 2017 8:44 am
Forum: Hardware
Topic: STFM to DVI/HDMI project
Replies: 39
Views: 2009

STFM to DVI/HDMI project

A project that's been keeping me busy lately... I've interfaced my 1040STFM to a Cyclone-II FPGA through the shifter socket in order to generate TMDS signalling. The result is a purely digital signal path from ST to DVI or HDMI monitor/TV. When finished this will support all colour and monochrome vi...
by Smonson
Mon Aug 28, 2017 9:23 am
Forum: Hardware
Topic: Solved: Please Help (Fried Pins) I think i am slowly killing my STE
Replies: 66
Views: 2771

Re: Please Help (Fried Pins) I think i am slowly killing my STE

Can you give some detail about these sensors? Are they just switches, connecting the 22v rail? If so, you're going to give your joystick port 150mA of current, which is huuuuuuuge.
by Smonson
Fri Jul 28, 2017 9:30 am
Forum: Ym rockin'
Topic: AVR-AY
Replies: 14
Views: 4723

Re: AVR-AY

Wow, that's awesome! The sound quality is much better than I expected.
by Smonson
Fri Jul 14, 2017 1:51 pm
Forum: Hardware
Topic: CPU -> shifter bus cycle timing
Replies: 6
Views: 564

Re: CPU -> shifter bus cycle timing

Wow, thanks all for the quick replies! Yup. When I referred to the data bus I was talking about the other data bus, not the 68k data bus :lol: - but the CPU will be driving it via the 244s that I see on the schematic during a write anyway, when WDAT is asserted by the MMU. It is indeed CS, and not L...
by Smonson
Fri Jul 14, 2017 11:57 am
Forum: Hardware
Topic: CPU -> shifter bus cycle timing
Replies: 6
Views: 564

Re: CPU -> shifter bus cycle timing

Damn, I posted this twice by accident. Both times I got a completely empty document after submitting the form and, the first time, assumed it didn't go through. Sorry, moderators.
by Smonson
Fri Jul 14, 2017 11:55 am
Forum: Hardware
Topic: CPU -> shifter bus cycle timing
Replies: 6
Views: 564

CPU -> shifter bus cycle timing

Hi, I promise this isn't another question about how the shifter draws the display, but about reading and writing the internal registers, a topic that rarely comes up! Control signals on the shifter relevant to the buses are only CS, LOAD, and R/W. There is also DE of course but I've made an assumpti...
by Smonson
Sat Jul 01, 2017 2:41 pm
Forum: C / PASCAL etc.
Topic: Newbie: Read /Write Parallel port (Pure C)
Replies: 10
Views: 1909

Re: Newbie: Read /Write Parallel port (Pure C)

Not sure if you're still looking at this, but... You don't need to resort to optocouplers, you can use an NPN signal transistor such as a 2n2222 or a BC547. These are very cheap and simple to use compared to optocouplers. They usually have a gain of at least 100 which means you can switch on your 20...
by Smonson
Sat Sep 24, 2016 2:00 pm
Forum: C / PASCAL etc.
Topic: Redrawing the desktop background in AES
Replies: 14
Views: 2880

Re: Redrawing the desktop background in AES

Peter, it was thanks to your code that I was able to find it. I began with the source for your CLOCKS demo program, ported it across to use my AES libs and then modified it to do the same sequence of VDI calls in the redraw handler that I am using. At the addition of vdi_interior() on a certain line...
by Smonson
Sat Sep 24, 2016 12:09 pm
Forum: C / PASCAL etc.
Topic: Redrawing the desktop background in AES
Replies: 14
Views: 2880

Re: Redrawing the desktop background in AES

Alright. I've been playing with this all day, and the reason for the strange behaviour is a bug in my vdi() call, which I implemented in inline assembly. The reason it misbehaves is because I didn't think to add "memory" to the clobbered registers list. So GCC was caching variables that ha...
by Smonson
Fri Sep 23, 2016 3:34 am
Forum: C / PASCAL etc.
Topic: Redrawing the desktop background in AES
Replies: 14
Views: 2880

Re: Redrawing the desktop background in AES

Thanks for all the replies and information, guys! I have quite a few things to try tonight after work. Peterlane, your GEM programming guide has been invaluable to me in getting to this point. I've been re-reading it extensively. Thanks again for putting that work together. Can you share your comple...
by Smonson
Thu Sep 22, 2016 1:07 pm
Forum: C / PASCAL etc.
Topic: Redrawing the desktop background in AES
Replies: 14
Views: 2880

Re: Redrawing the desktop background in AES

I think I get you. I'm already using v_opnvwk() to get the virtual workstation handle, but it's returning 1 for the handle which is exactly the same as the physical screen ID (from graf_handle()). They should be different IDs, right? screen_phandle = graf_handle(&gr_wchar, &gr_hchar, &gr...

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