ScummVM 2.0.0 - Error: Adding PCM ROM failed

Digitoxin · Post by **Digitoxin** » Tue Dec 19, 2017 6:16 am

When using ScummVM 2.0.0 with the MT-32 Emulator, I get the following error message:

"Error: Adding PCM ROM failed. Check that your PCM ROM is valid."

Everything works fine if I go back to the previous version of ScummVM. I am using the exact same folder structure and layout and configuration with both versions of ScummVM. Nothing has changed except for the version of ScummVM I am using.

Post by **digitall** » Tue Dec 19, 2017 9:19 pm

Odd. Are your ROM files named as follows and have the same MD5sums?
abe0982e4f662f881affa7d8a932c739 MT32_CONTROL.ROM
89e42e386e82e0cacb4a2704a03706ca MT32_PCM.ROM

Can you also indicate which platform i.e. Windows, OSX, Linux that you are using and whether you got the new v2.0.0 build from our downloads page?

Digitoxin · Post by **Digitoxin** » Wed Dec 20, 2017 12:14 am

Turns out one of the ROM files was corrupt. Have no idea why the previous version of ScummVM wasn't picking up on the incorrect checksum though.

digitall wrote:Odd. Are your ROM files named as follows and have the same MD5sums?
abe0982e4f662f881affa7d8a932c739 MT32_CONTROL.ROM
89e42e386e82e0cacb4a2704a03706ca MT32_PCM.ROM

Can you also indicate which platform i.e. Windows, OSX, Linux that you are using and whether you got the new v2.0.0 build from our downloads page?

Post by **digitall** » Thu Dec 21, 2017 2:25 am

Probably as the older version of Munt in-built did less validation.

If you need to redump your MT-32 EPROM chips, then there is a hardware design here to do this which I used:
https://github.com/digitall/eprom_reader