SPLatco Knowledge Base

Pushes communications status flags for the serial port at address pp into X.

This differs from the same instruction without the leading ‘a’ in that it explicitly nominates a serial port address (pp) rather than the default serial port.

The flags are:

Bit 0 = Rx buffer is full

Bit 1 = Rx buffer is empty

Bit 2 = Tx buffer is full

Bit 3 = Tx buffer is empty

Dialect exclusions: Not available in dialects before 29

Can only exist on boards that have an uncommitted serial port other than the programming port.