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ultracade!! dun dun dun!
lilshawn:
--- Quote from: JoeB on August 11, 2012, 12:03:15 am ---It's the only existent device that can convert video to mid res! People will pay a lot for one to hookup consoles to their mid res cabs (eg candy cab)
I was looking for one for a long time and just got one from France for almost 200$ for this much you can get new PC and arcadevga and jpac!
--- End quote ---
wut?!?!?!
the computer and I/O board takes care of that...the computer outputs CGA/EGA/VGA depending on the dongle installed.
in fact any computer can output whatever signal you need for an arcade monitor with no fancy converter needed.
--- Quote ---Speaking of ultracade, what software did it use? Old version of mame?
--- End quote ---
custom linux os "JoshuaOS" with custom file system
an early hyperspin frontend
probably rips off code from MAME, but because of the custom OS and Custom File system, nobody has been able to hack into it to see the internals.
P.S. i just browsed your other thread (Sorry i'm lazy and often view the forum on my phone) You have the White SUMICOM computer...The computers where super prone to overheating and crapping out. I'd trash it...I did. They made a kit to retrofit an additional fan to the case to help cooling, but it was too little too late. it's basically a celeron 1ghz with a 20mb HD and 64mb of ram. I've given away better computers. You are going to be better off trashing it.
This is the documentation for the USBlinx board. It emulates a keyboard so you should be able to just re arrange the key mapping for mame and be good. the key layout is in the PDF.
http://service.globalvr.com/downloads/ultracade/components/040-USBLNXM-UCT_USBlinx_User_Doc_v02H.pdf
Yenome:
i never understood the appeal of systems like ultracade. personally i would rather just buy a mamed system and call it a day. people go nutz over those systems at the auction.
JoeB:
--- Quote from: lilshawn on August 11, 2012, 02:18:29 am ---wut?!?!?!
the computer and I/O board takes care of that...the computer outputs CGA/EGA/VGA depending on the dongle installed.
in fact any computer can output whatever signal you need for an arcade monitor with no fancy converter needed.
--- End quote ---
Please re-read my original post.
1) PC CGA/EGA only kicks in once hacked Windows/Linux drivers are initialized. The boot/BIOS is still 31khz and will do anything from fry your chassis, turn it off, or make it look like it's having a seizure. ArcadeVGA is the only card that has CGA for boot/bios.
2) You assume everyone only uses a PC in their cab. What about XBOX360, PS3, Dreamcast? All these output VGA (31khz) or you can hack them to output 15khz interlaced (which looks like ass due to interlace). With a uvc, you can take your high res 31khz signal, and down-convert it to 25khz non-interlaced that looks arcade perfect. ***NO OTHER DEVICE CAN DO THIS***
JoeB:
I just looked at your original thread .. It doesn't seem you have a uvc, but you have something different. It looks like a uvc + JPAC in one device.
It's the little device that is sitting on top of the PC, on the shelf. It's the one that looks like it has an orange fuse from a car.
Can you provide more pictures of it?
lilshawn:
--- Quote from: JoeB on August 11, 2012, 09:23:30 am ---
--- Quote from: lilshawn on August 11, 2012, 02:18:29 am ---wut?!?!?!
the computer and I/O board takes care of that...the computer outputs CGA/EGA/VGA depending on the dongle installed.
in fact any computer can output whatever signal you need for an arcade monitor with no fancy converter needed.
--- End quote ---
Please re-read my original post.
1) PC CGA/EGA only kicks in once hacked Windows/Linux drivers are initialized. The boot/BIOS is still 31khz and will do anything from fry your chassis, turn it off, or make it look like it's having a seizure. ArcadeVGA is the only card that has CGA for boot/bios.
2) You assume everyone only uses a PC in their cab. What about XBOX360, PS3, Dreamcast? All these output VGA (31khz) or you can hack them to output 15khz interlaced (which looks like ass due to interlace). With a uvc, you can take your high res 31khz signal, and down-convert it to 25khz non-interlaced that looks arcade perfect. ***NO OTHER DEVICE CAN DO THIS***
--- End quote ---
did you even read the USBlinx documentation???
--- Quote ---
The video circuit in the USBlinx is used when the target monitor is either an arcade CGA or EGA
monitor. The USBlinx provides three necessary functions to convert PC signals into arcade monitor
signals. Firstly, the BIOS has control of the video during the PC boot-up phase and may output
incompatible signals. Secondly, the voltages of the RGB signals are different. Finally, the
synchronization format may differ.
During PC boot-up, the application, and even the operating system, has no control over the video
mode. The BIOS uses whatever default mode the motherboard supports. There is therefore the
potential that these modern synchronization signals may damage older style arcade monitors that
do not support such fast synchronization signals. The USBlinx therefore disables the
synchronization signals from propagating to the target monitor until the DDC signals enable it. DDC
consists of clock (SCL) and data (SDA) lines, and is a mostly unregulated method for monitors to
identify themselves by sending and receiving configuration information. The SDA line defaults to
high, and the USBlinx needs to see the SDA line pulled low to enable the pass through of the video
synchronization signals.
Both PC and arcade monitors use +5v synchronization signals, however, the voltage ranges are
different in the red, green and blue signals. The USBlinx therefore provides a video amplifier for
converting the PC’s 0.7vpp RGB signals (input into the DB15 connector J11) to the arcade monitor’s
5vpp signals (output through the JAMMA connector).
The type of synchronization signals used by arcade monitors can differ. All PCs produce separate
horizontal and vertical synchronization signals, while some arcade monitors require just one
composite signal. The USBlinx therefore combines separate synchronization signals (input into the
DB15 connector) into a composite signal (output through the JAMMA connector)
--- End quote ---
this I/O board combined with soft15k/arcadevga will keep nasty 800x600 and other weird signals from being displayed. NO OTHER DEVICE CAN DO THIS because they don't need to...and everybody else has realized this.