DM 15L v.19 PSE problems

[rflesch]

I have upgraded my DM15L to firmware version #19 to get rid of the keypress issues that occur in v.16 (cf. recent threads).

Now I seem to run into another problem:
The following program cannot be stopped by pressing any key in firmware v.19:

LBL A
+
PSE
GTO A

During runtime of the loop, in the 12 MHz mode, repeatedly pushing any button rapidly (~10 Hz) will eventually stop the program (sooner or later). In the 48MHz mode, I had to reset the calculator (hidden rear side reset button).

Without the PSE command, the above infinite loop is easily stopped by pushing any button once (in both the 12MHz and the 48MHz mode). Which is, of course, the expected behaviour.

I sort of remember that the PSE function worked correctly in firmware #16.
Does anybody else see the same result with the most recent firmware?

Best regards
Roman