I got it working in VCC. You have to read the 'Welcome to VCC' to find out that you have to load the disk image from the top menu at Cartridge>FD502 Drive 0. For anyone who doesn't know how to coin up an all, I got this from Tafoid over at MESS:
The default controls for the coco/coco3 is the joystick is mapped to the numpad (8,2,4,6 - 0 is the button). Standard Coco only had one button controllers, using 0 will credit - again it will start your game.