about the driver, the mouse kernel needs to know. Current supported: Two flags
to enable interrupts before or after calling the driver INSTALL routine.
git-svn-id: svn://svn.cc65.org/cc65/trunk@3741 b7a2c559-68d2-44c3-8de9-860c34a00d81
must now return carry set if the interrupt has been handled, and carry clear
if not. The callirq routine will stop calling handlers with the first handler
that claims to have handled the interrupt. callirq will return the carry flag
to the caller as it came from the last interruptor called.
git-svn-id: svn://svn.cc65.org/cc65/trunk@3491 b7a2c559-68d2-44c3-8de9-860c34a00d81
