from your PM:
You need to get MAME's video.h then add one line at about line 70:

void set_speed_factor(int speed) { m_speed = speed; }

That worked perfectly. Thank you.

Before I posted I had downloaded a fresh copy of the 0.153 source
from http://www.mamedev.org/release.html - I've not been into svn builds for many years.

Anyhow all resolved, thank you again for your help.

Last edited by JL; 05/19/14 09:16 PM.