Dl-1425.bin %28qsound Hle%29 -

What is `dl-1425.bin`?

dl-1425.bin is a ROM file (a copy of data from a read-only memory chip). It was originally dumped from an arcade game board made by Capcom in the early to mid-1990s. Specifically, it came from the CP System II (CPS-2) arcade hardware.

dl-1425.bin is that microcode. File naming conventions in the arcade dump scene are cryptic but logical. "dl" often stands for "Download" or "Dataline," and "1425" is likely a revision or checksum identifier used by the dumping group (often MAME—Multiple Arcade Machine Emulator). In essence, dl-1425.bin is the operating system for the Qsound chip. dl-1425.bin %28qsound hle%29

Locate the File: You need to find a clean version of dl-1425.bin. What is dl-1425

Changes in MAME: Since MAME version 0.186 (and updated in 0.201), the emulator strictly requires this file inside a specific device set titled qsound_hle.zip. Troubleshooting "dl-1425.bin Not Found" Here’s a detailed breakdown and investigative post about

Check case sensitivity: Linux-based systems require exact naming (dl-1425.bin, not DL-1425.BIN).
Check zip structure: Do not nest the zip; the binary must be at the root of the archive.
Update your ROM set: Some games require revision dl-1429.bin or dl-1452.bin for later CPS-2 iterations. Check your specific game’s driver.

Here’s a detailed breakdown and investigative post about dl-1425.bin (QSound HLE), a file often encountered in emulation, specifically for Capcom CPS-2 and CPS-3 systems (and sometimes arcade boards like the ZN-1/ZN-2).

The control register writes from the Z80.
The audio sample manipulation commands (mixing, filtering, panning, echo).

In MAME, dl-1425.bin is used for LLE of QSound — it’s the real firmware.
In FinalBurn Neo and some older emulators, they offered a HLE QSound driver that does not require the dl-1425.bin file, but for compatibility or completeness, they kept the same filename in documentation.