Ultimarc J-PAC PC to JAMMA Board (Standard Version)

Average rating:
average rating 100%
| Read all reviews

Price $59.95
This item is currently out of stock. If you would like us to email you when it is back in stock, please enter your email below:

  • More Details
  • Reviews
  • Related Items:

Ultimarc J-PAC PC to JAMMA Board (Standard Version)

The J-PAC is a board which allows plug-in connection of a JAMMA arcade cabinet to a VGA card and USB port on a PC. It incorporates all the advanced features of the I-PAC with an on-board JAMMA connector. Includes USB and VGA Cables.

  • NEW VERSION! Now has inputs fully protected against static discharge and reverse connection, now supports 3 extra JAMMA connections (Tilt, Service SW and Test)
  • Now supports 12 volt coin doors.
  • Fully programmable key code set. Stored even after power off.
  • Self-Test LED gives an instant check of all your wiring. Can indicate which, if any, input has a problem.
  • No separate power needed.
  • Does not use a matrix - no ghost keys. All inputs are completely separate and generate their own interrupt - this is the fastest possible method.
  • Does not use a scanning method which causes a variable delay.
  • Either use standard MAME keys or you can program your own character set.
  • Shift functions: Holding "Start1" and pressing other buttons sends a range of codes for MAME functions such as "escape", "Coin 1", "tab", "enter". This means no extra buttons are needed on the cabinet. In programmable mode any input can be the shift key and all keys can be programmed with a shifted code.
  • No special drivers needed. USB drivers are generic Windows.
  • All control inputs which are part of a normal JAMMA standard are routed to an on-board JAMMA edge connector.
  • Connector for VGA input from PC VGA card. Routes through to JAMMA edge connector for connection to the cabinet arcade monitor.
  • On-board video amplifier boosts signal to standard arcade monitor levels. Uses high-bandwidth video amplifier chip.
  • Custom microcontroller only allows sync signals to be sent to the monitor if they are in the correct range that the monitor is designed for. Avoids driving the monitor with a too-high horizontal sync rate which can damage some arcade monitors.
  • Sync circuitry also converts separate horizontal and vertical syncs into composite sync. Can handle both positive and negative vertical sync.
  • If required, can divide a 31Khz VGA signal in half so that it will display a stable picture on a 15Khz arcade monitor. Useful for checking boot-up progress and configuration (not for application use). Automatically stops dividing the signal when it detects a correct 15Khz rate is being send by the PC.
  • JAMMA cabinet speaker routed to screw connectors for wiring to powered sound card or hacked PC speakers.

  • J-PAC Board
  • USB Cable
  • VGA Cable
Comparison of J-PAC Control-Only to J-PAC Standard:
J-PAC Standard J-PAC Control-Only
Video Passthrough YES NO
VGA Cable Supplied YES NO
Buttons Per Player 8 6
Buttons 5 and 6 Support Screw Terminals JAMMA Connector (newer cabinets usually are wired this way)
Speaker Support Screw Terminals To empty header location on board, optional usage.
Product Link JPAC Standard JPAC Control-Only

Support & Documentation:
The J-PAC is made by Ultimarc, all support links below open to their website:

Ultimarc J-PAC PC to JAMMA Board (Standard Version) Reviews

Read all reviews

Featured positive reviews:

average rating 100%
Works Flawlessly 10/22/2020
By Amy
Works like a champ! Was able to update the board using the software without any issues. Converted my Dance Dance Revolution cabinet into a StepMania cabinet in literally minutes with minimal set up on the software end. Great purchase. Cheaper to order from T-Molding.com as well versus ultimarc.com as I'm based in the US and ultimarc.com isn't.
average rating 100%
MAME Emulation 08/09/2022
By Jay Peterson
I usually use original or JROK boards, but a few of my favorites were not available so PC was needed.

Now I realize that I can reprogram the keys so I might be able to play some more modern games as well that use WASD type keys.

Great product!

Ultimarc J-PAC PC to JAMMA Board (Standard Version) Related Items:

Jamma Plus+ Wire Harness
Average rating:
average rating 100%
Jamma Plus+ Harness with English labels for multi-game PCBs. Supports 6 player buttons.
Starting Price $13.95 * Quantity Discounts Available *
Share on Facebook Pin It