bemani-guide/docs/games/iidx30/lightning.md

beatmania IIDX 30 Lighting Mode (TDJ) Information

Setting up TDJ (Subscreen & 120FPS)

!!! tip "" To mitigate any errors during the process, we'll use a Bypasss Lightning Monitor Error patch. First, locate your bm2dx.dll which is located inside the \modules folder and make a backup of it in case something goes wrong. Next, head over to mon's Bemani Patcher and drag & drop your bm2dx.dll into the website.

At the top, you'll see `Bypasss Lightning Monitor Error`. Enable it and press `Save Patched File`. Replace the file inside of `\modules`.

Next, open up your `spicecfg.exe`, head to the `Options` tab and enable `IIDX TDJ Mode`.

!!! warning "Be warned that to make TDJ work as intended, the game requires you to have 2 monitors with one being a touchscreen and the other one being 120Hz. It also disables the Keypad buttons/functionality requiring you to use the subscreen to enter your PIN."

Setting up Single Monitor TDJ

!!! tip "" If you do not have a second monitor but atleast one that is 120Hz, you can set up Single Monitor TDJ mode.

In `spicecfg.exe` under the `Options` tab, head down to `Graphics (Common)` and enable `Only Use One Monitor`. 

!!! tip "" This will enable you to switch (or open) the subscreen with a press of a button which you have to bind first. Inside of the Buttons tab, head to the Overlay Button section and bind Toggle Sub Screen to a button that feels comfortable for you to use. You can also change the subscreen size if you don't like it fullscreen. Simply head back to the Options tab and look for IIDX TDJ Subscreen Size and change to your preferred size.

Lightning-specific Troubleshooting

!!! tip "" Below is a pretty common issue that has occured for users utilizing this guide and general startup practices.

Audio Related Crash

!!! tip "" If you get a stack trace in your log.txt that looks like this...

`exception raised: EXCEPTION_ACCESS_VIOLATION`

`[2020/10/22 18:20:21] I:signal: printing callstack`

`[2020/10/22 18:20:21] I:stackwalker: 000000018026E906 (bm2dx): (unknown): (unknown)`

For cab type 1 (LDJ), change your audio device to motherboard audio and/or use -audiobackend asio `-asiodriverid ... -audiodummy`

For cab type 2 (TDJ, with `-iidxtdj` or another means), you have a few options:

1) Use `-iidxasio "Driver Name Here"` to set the ASIO driver used by IIDX's own ASIO handler. (Does not work with all ASIO drivers, they designed it to work best with a specific revision of the XONAR SOUNCARD(64))

2) Use `-iidxsounddevice wasapi` to set IIDX to use WASAPI instead of its own ASIO handler.

3) Use `-iidxsounddevice wasapi` along with `-audiobackend asio ...` to have the game pipe audio through Spice's own ASIO handler which is more compatible with various ASIO drivers