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J-F Garnier · (This post was last modified: 01-17-2018 08:32 AM by J-F Garnier.)

(01-16-2018 07:02 PM)Christoph Giesselink Wrote: The AID was changed in VB ILPer v1.33, before in 1.31 it was 48, which is the AID of a HP-82163A, a display device and so we have the ID$ remainder "DISPLAY\r".

(01-16-2018 10:02 PM)Mike (Stgt) Wrote: Only one word about the AID/ID$ mismatch discussion everyone may solve to his flavor now -- I have no problem with a virtul printer not printing on real paper, but use a square on my display as 'virtual paper'. But to classify a device (accordant its capabilities) with it's AID as some kind of a printer but baptise it with an ID$ 'DISPLAY' just sets the border between virtual and real to (or inside) the simulated device. Some kind of para-virtualisation.

:-)

Some background on the choice of AID/ID$ of the ILPer 'printer': in 2008 I wrote the VB version of ILPer to provide a support tool of the PIL-Box. I re-used the code that comes from my Emu41/71 (and actually comes from a previous ILPER DOS version - 1990 era).
In those previous versions, the "DISPLAY" device is a true display that supports the HP escape sequences for cursor control. My knowledge of VB was too limited to support these escape sequences in the Windows version so I just ignored them.
I then realized that keeping a display AID was causing problems with the HP71 because this machine, by default, searches for a display and uses it if found. This produced bad outputs.
So I changed the AID to a generic printer (46), but didn't change the ID$ as it didn't harm. With this change you can now do DISPLAY IS PRINTER (on the HP71) and have correct outputs.

In conclusion, I recommend to keep a printer-class AID for the ILPer printer window. You may change the ID$ if you prefer to have some consistency :-) just remember that the HP41 needs a 7-character ID$ for FINDID to work correctly.
Of course you are free to experiment !

Quote:At least I have now the chance to end this situation with two "Displays", one of them a virtual printer. Current output of LCAT run in Emu41 under DOSBox with ILPilsim and ILPer "attached":

Code:

5 DEVICES PRIMARY ADR. 2 ADR ID AID CLASS 01 DISPLAY 48 DISPLAY 02 DISPLAY 46 PRINTER 03 HP9114B 16 MASS ST 04 HDRIVE1 16 MASS ST 05 DOSLINK 78 INTRFCE

Nice setup. Is the challenge to find out how you create this config? :-)

J-F