This is a pretty comprehensive set of controls for the Access Virus Rack Classic OS2.1... 
It uses the Real Time Controller 1 for selecting the 'Part' number where required and assumes 
that the device is being operated in Multi or Multi Single mode, (I figure like myself most 
people will operate in these modes especially when sequencing!!!)... It encompasses pretty 
much all the controls I personally would expect to operate 'on the fly' and the only known 
issue is with the Reverb Color controller in the Multi EFX settings where the device doesn't 
seem to recognise this control when transmitted from an external device!!! I've asked the 
question of the manufacturer and if there needs to be any update I will make it as soon as 
I get the answer from Access.