Because dl-1425.bin contains copyrighted code owned by Capcom, it is not distributed with MAME. You must acquire it from your own legally dumped arcade board or from a ROM set you already own. Downloading it from warez sites is technically piracy, though enforcement is rare for 30-year-old arcade games.
Searching for mame dl-1425.bin might lead to confusion. Here are related but distinct files:
| Filename | Game | Purpose | |----------|------|---------| | dl-1425.bin | Gate of Doom / Dark Seal | Main CPU code | | dl-1426.bin | Gate of Doom | Graphics tilemap data | | dl-0415.bin | Bad Dudes vs. Dragonninja | Different Data East game | | eo-1425.bin | (None) | Typo or misnamed dump from bootleg |
Always verify you are not confusing dl-1425 with dl-1524 or dl-1426. Even one digit off, and MAME will reject the file.
As of 2025, MAME still emulates "Dark Seal" perfectly—if you have dl-1425.bin. But the file faces the same existential threat as all old ROMs: bit rot, lost source code, and disappearing original PCBs. mame dl-1425.bin
The MAME project maintains a "Devices" list. dl-1425.bin is flagged as "good dump" – meaning verified against multiple PCBs. No known undumped revisions exist.
Let’s look at the raw technical data (based on MAME source code and known ROM sets):
| Property | Value | |----------|-------| | File name | dl-1425.bin | | File size | 131,072 bytes (128 KB) | | CRC32 | 0x8a97ad6c (example - verify with current MAME dat files) | | SHA-1 | (varies by revision, but commonly matches Japan or export sets) | | Data width | 16-bit (organized in two interleaved 8-bit banks) | | Address range | Maps to main CPU address space $00000-$1FFFF | | Content type | 68000 machine code + lookup tables |
For those who have legally obtained the file, here is how to integrate it: Because dl-1425
If the CRC matches, the error will disappear.
Technically, dl-1425.bin is a BIOS dump (firmware ROM) taken from a specific microcontroller chip.
If MAME reports dl-1425.bin (NOT FOUND), the causes are:
Capcom’s CPS-1 hardware (released 1988-1995) used a modular design: a main PCB (printed circuit board) with sub-boards for sound and graphics. The dl-1425.bin file is almost always associated with the sound subsystem of CPS-1 games. Searching for mame dl-1425
Here’s the breakdown:
In many verified MAME dumps (e.g., sf2 or sf2ua sets), dl-1425.bin holds the Z80 sound driver code—the instructions that tell the sound chip which samples to play, at what pitch, and when. Without it, the game would run silently or crash during attract mode sound tests.
From a checksum perspective, the correct dl-1425.bin file has known hash values used by MAME for verification:
MAME’s internal XML database references this file in the rom and sample tags for the parent ROM set.