Search found 15 matches

by bugwhacker
Tue May 30, 2023 10:29 pm
Forum: Display Devices
Topic: Outputing video to 2 displays
Replies: 3
Views: 705

Outputing video to 2 displays

Lets talk about 2 display systems where the 2 screens have differant data going to them. I am talking about the Nintendo VS. System or Tysons Punch-Out. Since we already run super-resolutions to enable 240p over the hdmi port into a hdmi-rgb convertor , it should be doable to use a 1x2 video wall processor in between to split the hdmi super-resolut...
by bugwhacker
Thu Dec 03, 2020 1:06 am
Forum: Display Devices
Topic: "Computer Space" rom on 31khz monitor,custom video mode/scaler settings needed.
Replies: 4
Views: 2631

Re: "Computer Space" rom on 31khz monitor,custom video mode/scaler settings needed.

I was able to get it working by moving to an analog video card instead of trying to do it over direct video with a DAC. I was then able to apply the proper video mode which needed to have the front porch timings changed to sync properly. This was done for a stand alone ComputerSpace machine and I didn't write down the timings but I can get them aga...
by bugwhacker
Thu Dec 03, 2020 12:20 am
Forum: Display Devices
Topic: 1920x1920 1:1 Monitors
Replies: 4
Views: 2986

1920x1920 1:1 Monitors

I love running CRT monitors for my Mister but I have been asked to find out about alternatives using the 1920x1920 1:1 LCD panels that are out there now. These displays are 24"x24" or 16"x16" approx. and would fit well in many arcade cabinets, they would also allow for rotation of cores without rotating the display itself. Since...
by bugwhacker
Mon Oct 26, 2020 12:06 am
Forum: General Discussions
Topic: Disable Bootcore Timeout in Arcade Games
Replies: 2
Views: 1827

Re: Disable Bootcore Timeout in Arcade Games

What did you edit in your .ini file to load an Arcade core on start-up? I can get anything but an Arcade core to load on start-up
by bugwhacker
Sun Oct 18, 2020 10:46 am
Forum: Display Devices
Topic: "Computer Space" rom on 31khz monitor,custom video mode/scaler settings needed.
Replies: 4
Views: 2631

Re: "Computer Space" rom on 31khz monitor,custom video mode/scaler settings needed.

So I am trying to work my way through this- Modeline "512x384_70.00" 17.92 512 528 576 640 384_70.00 385 388 400 -hsync +vsync PIXEL_CLK = 17920 H_DISP = 512 H_FPORCH = 16 H_SYNC = 48 H_BPORCH = 64 H_SYNC_POL = 0 V_DISP = 384_70.00 V_FPORCH = 1 V_SYNC = 3 V_BPORCH = 12 V_SYNC_POL = 1 INTERLACE_ENABLE = 0 video_mode=512,16,48,64,384,1,3,12...
by bugwhacker
Sun Oct 18, 2020 9:42 am
Forum: Display Devices
Topic: "Computer Space" rom on 31khz monitor,custom video mode/scaler settings needed.
Replies: 4
Views: 2631

Re: "Computer Space" rom on 31khz monitor,custom video mode/scaler settings needed.

VGA20 RESOLUTION HORIZONTAL VERTICAL Scan Frequency: 31.55 KHz Scan Frequency: 70.0 Hz Scan Period: 31.7 µSec Scan Period: 14.3 mSec Active Video: 25.6 µSec Active Video: 12.2 mSec Video Delay: 5.7 µSec Video Delay: 1.1 mSec Sync Pulse: 4.0 µSec Sync Pulse: 0.2 mSec Scan Line: 634 Pixels Screen: 450 Lines Resolution: 512 Pixels Resolution: 384 Line...
by bugwhacker
Sun Oct 18, 2020 9:17 am
Forum: Display Devices
Topic: "Computer Space" rom on 31khz monitor,custom video mode/scaler settings needed.
Replies: 4
Views: 2631

"Computer Space" rom on 31khz monitor,custom video mode/scaler settings needed.

This rom doesn't have a scan doubler setting in the menu and I have tried "forced_scandoubler=1" which allows me to play most other 15khz games just fine. Is there a custom video mode that will allow this game to play on my 31khz monitor? Right now it displays mostly correct but the horizontal is shifted until the edges of the screen meet...
by bugwhacker
Thu Oct 15, 2020 11:00 am
Forum: Development for MiSTer
Topic: Would it be better to run an SPI connection through the LTC or Bit bang it?
Replies: 0
Views: 1602

Would it be better to run an SPI connection through the LTC or Bit bang it?

I know it seems obvious to just program the SPI port to be used as an SPI port but I don't know which system can afford the bandwidth to run a Vector monitor over SPI. If it matters I have the digital I/O board and I am using an Hdmi DAC running on arcade monitors for video right now. I am pretty sure the SPI protocol could be bit banged out over t...
by bugwhacker
Thu Oct 15, 2020 10:53 am
Forum: Display Devices
Topic: CRT with HDMI, Component, and S-Video - which is best?
Replies: 7
Views: 4725

Re: CRT with HDMI, Component, and S-Video - which is best?

HDMI going into a CRT tv will be scaled/processed in some way as you will be going from a digital signal to an analog signal internally for it to be sent to the CRT's analog guns. That will introduce lag and most likely artifacts in the displayed image. All that being said maybe it looks the "best" on your tv and the lag is low enough to ...
by bugwhacker
Thu Oct 15, 2020 10:42 am
Forum: Hardware Setups
Topic: Would it be better to run an SPI connection through the LTC or Bit bang it?
Replies: 4
Views: 2611

Re: Would it be better to run an SPI connection through the LTC or Bit bang it?

Some people run their arcade cores through arcade monitors, I am wanting to add support for Vector monitors.

That being said maybe an OP could move this question to the Hardware section?
by bugwhacker
Thu Oct 15, 2020 10:09 am
Forum: Hardware Setups
Topic: Would it be better to run an SPI connection through the LTC or Bit bang it?
Replies: 4
Views: 2611

Re: Would it be better to run an SPI connection through the LTC or Bit bang it?

Analog has a 16 channel SPI DAC project board that plugs into the LTC port of the DE-10. https://www.analog.com/en/design-center/evaluation-hardware-and-software/evaluation-boards-kits/dc2025a-a.html 16 channels @ 12bit or 16bit depth. Its $100 and could conceivably give you 16 channel control to 4 or more devices. Monitor 1 = X/Y/Z for Color Vecto...
by bugwhacker
Thu Oct 15, 2020 12:39 am
Forum: Hardware Setups
Topic: Would it be better to run an SPI connection through the LTC or Bit bang it?
Replies: 4
Views: 2611

Re: Would it be better to run an SPI connection through the LTC or Bit bang it?

As another thought it could be sent over SPIDF/Coaxial audio much like https://www.youtube.com/watch?v=SRmgAqyIweU Oscilloscope Music. There is more than enough bandwidth and honestly a Vector monitor is basically fed from an audio amp anyway....
by bugwhacker
Thu Oct 15, 2020 12:08 am
Forum: Arcade Cores
Topic: How to get Arcade cores to auto-boot after power cycle.
Replies: 2
Views: 2353

How to get Arcade cores to auto-boot after power cycle.

I am trying to get my Mister to play either the Arcade title I tell it to in the .ini file or at least load the last one played. This feature works rather well for console games (It would be even better if you could not only autoload the core but the ROM also.) but I haven't been able to get it working for Arcade titles. It even works for MemTest? ...
by bugwhacker
Wed Oct 14, 2020 11:58 pm
Forum: Hardware Setups
Topic: Would it be better to run an SPI connection through the LTC or Bit bang it?
Replies: 4
Views: 2611

Delete - posted in wrong section

I know it seems obvious to just program the SPI port to be used as an SPI port but I don't know which system can afford the bandwidth to run a Vector monitor over SPI. If it matters I have the digital I/O board and I am using an Hdmi DAC running on arcade monitors for video right now. I am pretty sure the SPI protocol could be bit banged out over t...
by bugwhacker
Sun Oct 04, 2020 9:53 pm
Forum: Arcade Cores
Topic: Dance Dance Revolution core available? Its my sister favorite game
Replies: 4
Views: 3640

Dance Dance Revolution core available? Its my sister favorite game

I can get a nice platform floor style usb controller for it and think it would make a cool gift for her.