All of these programming methods can be used to re-assign key-codes generated by the I-PAC / J-PAC. Codes are stored in EEPROM and kept after power-off. Note that you don't need to program the board at all if you don't want to, just leave it with the factory MAME settings".

Click here to download any of these programs

Click below for preferred programming method:

• WinIPAC Interactive Panel Designer Software. For all Windows versions
• Interactive Programming and Test mode. Requires no software on the host but cannot store multiple configuration files. Good for once-only setup. All OS'es.
  
• Mac programming utility
• Linux programming utility (external link to Travis Veldkamp's web site)

While we're on the subject of programming, it's useful to understand exactly how the I-PAC shift functions work. here's some info:

How the I-PAC Shift Button Works

When a shift button has been assigned, pressing and holding this button causes the "SHIFTED" code page to be used. The way this works is not the same as defining "key multiple" in an emulator.
To explain this, consider the following example which is part of the standard I-PAC code set in non-programmable mode (and can of course also be set up in programmable mode)
For example say "Start 1" is the shift button and "Player 1 Button 1" is "Coin 1" in the shifted codes. Now if you set this as a key multiple in an emulator, you could generate a coin insert by pressing these two buttons together. BUT you would also send the code for the first button you pressed. Imagine you are starting a game and have one coin insert already done and you want to play a 2-player game which needs two coin inserts. You press the key combination again to send another coin. Unfortunately what may happen is that a one-player game will start as you have pressed "start1" as one half of the coin key combination!
How does the I-PAC get around this? When you press the "Start 1" (shift) button nothing happens immediately. The I-PAC waits to see if you are going to press another key at the same time. If you do press the "Player 1 Button 1" the shifted "Coin 1" code is sent. If you don’t press any other button the "Start 1" code is sent when you RELEASE the "Start 1" button. So you don’t get any unwanted key codes.
The I-PAC⁴ has two shift buttons. The codes on the I-PAC⁴ are divided into two pages. Each of the two pages has it's own shift button which only acts on controls in it's own page.