...
This call specifies a code area to be called followed by a reason code (the low byte address). When using this call, IX is the handle. Those values are remembered by calling OS_Vth with the correct handle (IX) and the correct subtype (A).
...
This call specifies a code area to be called followed by a reason code (the low byte address). When using this call, IX is the handle. Those values are remembered by calling OS_Vth with the correct handle (IX) and the correct subtype (A).