bread80, 1 month ago To poll a device for input data: Set A to device address EX ADR ;Device selected EX STATUS ;Prepare to read status byte INPUT ;Read status byte Check value. If data available: EX DATA ;Prepare to read data INPUT ;Read data Data is now in A register. All of which is horribly long winded.
To poll a device for input data: Set A to device address EX ADR ;Device selected EX STATUS ;Prepare to read status byte INPUT ;Read status byte Check value. If data available: EX DATA ;Prepare to read data INPUT ;Read data Data is now in A register.
All of which is horribly long winded.