QDOS Internals

Anything you never knew you wanted to know about the Sinclair QL.

User Tools

Site Tools


Table of Contents


This trap sets a pointer to the application sub-window list in the window channel block.

Call ParametersReturn Parameters
D0.B$7DD0.LError return
A0.LWindow channel IDA0.LPreserved
A1.LPointer to the listA1.LPreserved


ERR_NOChannel not open


  • All registers not mentioned above are unused and preserved.
  • This very simple trap just places the address in A1 in sd_sewll of the channel block. The trap seems to be rarely if ever used by the PE software and seems of no practical use to a programmer.
qdosmsq/pe/swdf.txt · Last modified: 2011/02/20 16:38 by george.gwilt