Not entirely true. I believe this may be a machine-configurable option,
as I have hit a $1250 jackpot on more than one machine in different
casinos where the credits counted/accumulated up to $1250 in the normal
manner, and *then* the machine locked up.
I have not been fortunate enough to hit a $20K royal on one of these
machines, but I will report back when I do 
路路路
On Tue, 17 Aug 2010, ukstages wrote:
credits don't accumulate or count up in the traditional sense when you
hit a royal at $1.when you hit a "taxable event," the machine locks up and the credit
meter has 4000 credits (or dollars) added to it all at once.