Search found 127 matches

by Poobah
Mon May 04, 2020 1:11 am
Forum: MiSTer
Topic: Local Sellers for MiSTer Expansion Boards
Replies: 504
Views: 323908

Re: Local Sellers for MiSTer Expansion Boards

Well, the inability to edit posts means I can't update my status post anymore. :( I have a limited number of 128 meg SDRAM XSD 2.4 boards available. Boards are error-free at 130 MHz. As always, I produce many MiSTer addon boards and accessories See my website for the latest pricing, availability an...
by Poobah
Sat Apr 18, 2020 7:31 pm
Forum: MiSTer
Topic: I/O Board
Replies: 436
Views: 223153

Re: I/O Board

Another question. The schematic lists F5V and F3V as Panasonic ERJ6RS resistors but no resistance is specified. I didn't find anything in the thread about it so I'm wondering what that means. This is the fan voltage selector area. F5V and F3V are jumper pads Either: 0) populate with 3 pin header an...
by Poobah
Wed Apr 15, 2020 10:18 pm
Forum: MiSTer
Topic: Original analog video without I/O board? Possible!
Replies: 327
Views: 70531

Re: Original analog video without I/O board? Possible!

Did you remove the dongle for this test? (DE-10 port directly to OSSC) The OSSC is an analog to digital converter so that is not possible. I did some testing with below patch and it seems to be working well. It outputs 240p directly without outputting 1080p first. diff --git a/sys/sys_top.v b/sys/s...
by Poobah
Wed Apr 15, 2020 12:42 pm
Forum: MiSTer
Topic: Original analog video without I/O board? Possible!
Replies: 327
Views: 70531

Re: Original analog video without I/O board? Possible!

I have tested loading cores with Directvideo into an OSSC. MiSTer outputs 1080p RGBHV for about half a second before switching to Directvideo mode. I am guessing this is because it takes a short while to enable Directvideo on the FPGA side. A fix would be to start out with Directvideo enabled on th...
by Poobah
Wed Apr 01, 2020 9:02 pm
Forum: MiSTer
Topic: I/O Board
Replies: 436
Views: 223153

Re: I/O Board

As pointed out in previous post, looks like there's no supply of the 604ohm 4 resistor network 1% until July 2020 ! https://au.mouser.com/ProductDetail/652-CAY16-6040F4LF Would there be an alternative to this we can substitute ? Sorgelig can correct me if I am wrong, but, The *exact* values of the ...
by Poobah
Sat Jan 18, 2020 5:18 am
Forum: Professionals
Topic: WIZnet Ethernet chips
Replies: 7
Views: 2188

Re: WIZnet Ethernet chips

ESP32 would be a better choice than the ESP8266
by Poobah
Mon Nov 04, 2019 5:31 am
Forum: MiSTer
Topic: ao486
Replies: 238
Views: 46896

Re: ao486 Performance Technical Discussion

We really didn't use the SX versions in the U.S. We basically went from the 38, briefly to the 486, and straight to the Pentium (math bug and all). There were a slew programs that required the FPU to run by the time the 486 was popular. I am certainly not complaining. I was pointing out that the la...
by Poobah
Sat Oct 26, 2019 5:17 pm
Forum: MiSTer
Topic: Local Sellers for MiSTer Expansion Boards
Replies: 504
Views: 323908

Re: Local Sellers for MiSTer Expansion Boards

Well, the inability to edit posts means I can't update my status post anymore. :( I have a limited number of 128 meg SDRAM XSD 2.4 boards available. Boards are error-free at 130 MHz. As always, I produce many MiSTer addon boards and accessories See my website for the latest pricing, availability and...
by Poobah
Thu Oct 10, 2019 3:45 am
Forum: MiSTer
Topic: I/O Board
Replies: 436
Views: 223153

Re: I/O Board

Poobah - I just got done building my V6 board and on mine at the main menu the red and green leds strobe back and forth. Is this correct? Also the digital audio led is not on. Does it only light when a digital audio source is plugged in to the jack? Thanks - gsargent The newest menu core seems to h...
by Poobah
Thu Oct 10, 2019 3:20 am
Forum: MiSTer
Topic: I/O Board
Replies: 436
Views: 223153

Re: I/O Board

sajattack wrote:Do you have a full list of parts for v6.0 like v5.5 in the wiki? If not, what size are the 100uF caps?
I'm using KEMET T491C107K010AT, they are 6032.
by Poobah
Wed Sep 04, 2019 1:44 am
Forum: MiSTer
Topic: I/O Board
Replies: 436
Views: 223153

Re: I/O Board

Hi eskwadrat, Some IO board info- Slow fan: Might be a new fan that needs to run a bit. Also some board builders (myself included) offer the option of a 12 volt fan, which will run slower on the IO board (should still be somewhat fast tho). Some V6 boards have a jumper for 3.3v or 5v fan power, make...
by Poobah
Sun Aug 25, 2019 5:10 pm
Forum: MiSTer
Topic: SDRAM board
Replies: 480
Views: 222393

Re: SDRAM board

So, keep in mind the 90 MHz thing and the SNES thing could be unrelated. From what I am reading, the SNES thing is a relatively new development, the memtest code, and the memory board designs haven't changed in quite a while. I'd bet the 90 MHz thing is an anomaly in the memtest code. It could be on...
by Poobah
Fri Jun 07, 2019 8:30 pm
Forum: MiSTer
Topic: Local Sellers for MiSTer Expansion Boards
Replies: 504
Views: 323908

Re: Local Sellers for MiSTer Expansion Boards

USB Hub 1.2 Now Available
Includes:
- USB Hub Boards v 1.2
- Bridgeboard
- Matching brass standoffs
- Power Y cable

$30 US plus shipping

See http://www.atari-forum.com/viewtopic.ph ... 69#p359169 or http://www.legacypixels.com/mister to order
usbhub12.jpg
by Poobah
Sat Jun 01, 2019 4:23 pm
Forum: MiSTer
Topic: Local Sellers for MiSTer Expansion Boards
Replies: 504
Views: 323908

Re: Local Sellers for MiSTer Expansion Boards

Hey all,
Back up and running after tornados went through our neighborhood (Beavercreek, Ohio)
Power is restored, so my soldering iron is back in business =D

Boards in Stock:
IO v5.5.
SDRAM XS 1.1
RTC v1.3
by Poobah
Fri May 24, 2019 4:00 pm
Forum: MiSTer
Topic: MiSTer Fan
Replies: 32
Views: 8826

Re: MiSTer Fan

The Noctua fans are overkill for MiSTer.
A generic 12v 40x40x10 fan will move plenty of air, and be whisper quiet
by Poobah
Sun Mar 17, 2019 6:58 pm
Forum: MiSTer
Topic: Local Sellers for MiSTer Expansion Boards
Replies: 504
Views: 323908

Re: Local Sellers for MiSTer Expansion Boards

Just another update... I have had some luck with orders outside the US lately, so I'm now offering international shipping. All the components I use are RoHS compliant, but I do use leaded solder, so you have to be sure you can receive electronics containing lead. Also available are IO boards with a ...
by Poobah
Mon Mar 11, 2019 11:57 pm
Forum: MiSTer
Topic: USB Hub board
Replies: 271
Views: 167567

Re: USB Hub board

Got a source for the USB Micro connector on the bridge board?
Thanks!
by Poobah
Tue Feb 19, 2019 1:21 am
Forum: MiSTer
Topic: Local Sellers for MiSTer Expansion Boards
Replies: 504
Views: 323908

Re: Local Sellers for MiSTer Expansion Boards

Stock update: USB Hub (1.1) now available! Includes a removable signal cable, power "Y" cable, and standoffs. Power jack can be located on the long or short side of the board (please specify) I was able to get parts in larger quantity (=lower cost), so new reduced prices! All in stock ready to ship ...
by Poobah
Thu Feb 14, 2019 1:00 am
Forum: MiSTer
Topic: MiSTer - Case Universal v5.2 - 3D printed
Replies: 73
Views: 28170

Re: MiSTer - Case Universal v5.2 - 3D printed

- It is something of an entire discipline and art form unto it's own. Expect a learning cliff to become proficient. - It is both immensely rewarding and insanely frustrating. Yeah it is and I love it! :cheers: I blame NegSol... :lol: :lol: At first I just wanted something to encase my nekid DE10-Na...
by Poobah
Tue Jan 08, 2019 9:30 pm
Forum: MiSTer
Topic: Newbie questions
Replies: 690
Views: 175171

Re: Newbie questions

I've been using M3 screws. They aren't exact, but seem close enough.
by Poobah
Tue Jan 08, 2019 1:11 pm
Forum: MiSTer
Topic: 680x0 cores
Replies: 69
Views: 27151

Re: 680x0 cores

FPGA chips come in several "speed grades", but the speed of a given chip is ultimately determined by the core and the clock(s) provided. You select an FPGA based on the requirements of your application. Saying an FPGA is "decent speed" doesn't mean anything.
by Poobah
Tue Jan 08, 2019 5:01 am
Forum: MiSTer
Topic: 680x0 cores
Replies: 69
Views: 27151

Re: 680x0 cores

PurpleMelbourne wrote: 5CEFA9F23I7N is a decent speed Altera chip.
FPGA chips don't really have speeds.
by Poobah
Fri Jan 04, 2019 5:47 am
Forum: MiSTer
Topic: I/O Board
Replies: 436
Views: 223153

Re: I/O Board

So, looking at the datasheets for the Toshiba TOSlink receivers, and doing the math, assuming a perfect connection from the LED to the TOSLink cable, and max 2 dB cable loss, we'd ideally want an LED with an output between 16 and 163 mcd @ 650nm. Given the connection between the LED and the cable is...
by Poobah
Fri Jan 04, 2019 4:46 am
Forum: MiSTer
Topic: I/O Board
Replies: 436
Views: 223153

Re: I/O Board

Interesting.... BOMs I surveyed (not the wiki, which was 5.2 at the time) used very bright (600+ mcd) LEDs for TOSLink. I settled on one listed at LCSC: C54149 LED for TOSLink, that's a 620-630nm 926 mcd LED. It is fairly bright, but diffuse - worked well (Also discontinued, BTW) Doing the math, tha...
by Poobah
Thu Jan 03, 2019 5:31 am
Forum: MiSTer
Topic: I/O Board
Replies: 436
Views: 223153

Re: I/O Board

Some issues to investigate: 1) You'll need to know the forward voltage of the LED to really analyze if it is appropriate. Fortunately, it's just a a diode. Put your multi meter on the diode setting, connect it up to your LED and read off the forward voltage, it'll probably be 2.0 ish, but you never ...

Go to advanced search