As I remember I tried to compile the program more times under EXOS 2.3 (hun) and the same bug appeared.

In that case I can only assume that a bug in EXOS 2.3 somehow caused a wrong byte to appear in the output file - actually this wrong byte is the lower half of an address, pointing to a string that is to be printed (displayed) on screen.  Because of this error the wrong characters are displayed on screen - partly a recognisable message and partly rubbish, which is exactly the result we have found.  Anyway you get the right results when you use the latest version of EXOS, so that is OK.  The only reason for investigating this error was to find out if there was an incorrect interaction between Zzzip and EXOS, and I am satisfied that there is no such problem in this case.

I will leave the subject of Exception Handling for another time.

Szipucsu! It is possible when you compiled with EXOS 2.3 then not use a EXDOS?
If yes, then I think this is a same problem with the "blinking pixels in WP when use a EXOS 2.3 without EXDOS". This bug is solved in the 2.31

I do not use EXDOS in the emulator at all. I compiled the program without EXDOS and tried it without EXDOS.
Yes, in the 2.31 the program was OK!

Great surprise from Peter! Thanks!

I have made a version of ZZZIP which creates a Source File instead of producing an output file in machine code.  I call this new program ZIPSRC.
 
I have also made some changes to IDEA (my editor/assembler) so that it will assemble the output from ZIPSRC (the compiled program needs to have a special header).
 
Both these new programs are in the enclosed folder, together with some text files and an example TEST.BAS file (with Source and Assembled output files).
 
One advantage of ZIPSRC is that it does not need to keep a list of Basic Line labels and addresses in memory, so it can compile much larger Basic programs.
 
The other advantage is that you can see what a compiled program looks like  -  maybe you are curious or maybe you are trying to solve a problem.
 
I know that it is dangerous to make changes to old programs, because you can not remember exactly how they should work.  Remember that these programs are about 25 years old!  So there may be some bugs in the new versions.  I hope they are OK, but let me know if you find any problems.

Thanks Peter!
Happy Christmas!

Hi All,

I wanted to post back to this thread, because I had a little more history to add. Back in the early 80's, my father bought an E64 which was a step up from our ZX spectrum. We also went to the PCW Computer show back in 84? and met Nick Toope and Robert Madge, (somewhere at home, my dad has a picture of me at the Enterprise stand sat on an E64, anyhow.. )

We also used to go to the London Enterprise Users Group near Belzise Park tube station (iirc) on the Saturdays, when they were run every month or so Where we met Tim Box, Mark Lissack and some others, who's names I have since forgotten (Doug Rabson rings a bell also )  as well as going to Enterprise computers (then at 31-33 Hoxton Street, London - when it was school holidays !)
i know i'm sad because i remember the address, and that you had to get to Old Street on the London underground to get there)  - Dad and I used to speak to Gerald Morgan (programmer), Keith Elliott ( Marketing Mgr) and  Steve Groves (Managing Director) of Enterprise computers, and by some chance of luck, my dad managed to get an agreement for me/us to test the new games and software for enterprise before they came out.  It was at this point, I seem to remember that dad and I bumped into  Peter Hiner at one of those meetings (at Enterprise computers or the London UG meets) and I specifically remember Peter asking me to 'test' Zzzip for him using my basic programmes which i had written,   I don't know if Peter Remembers me, or any of you who are on this forum who were enterprise owners remembered 'us' (Dad and I) but i can post some pictures if anyone is interested.

I remember a lot about the Enterprise, the IS BASic compiler, the FORTH and PAscal language compilers, and when we bought ExDOS, it was such a great time, i learned a lot about programming and  attribute my experiences and programming to owning an Enterprise.

such fun times.

Dan

Welcome here Dan, it is an interesting story, please post pictures if you have from any Enterprise "meeting" from those time I think everybody is interested about it, and pics from you and your dad for UK members
Do you still have any of your programs?

Thank you very much Dan, we are waiting everything , even if you remember for a "new" story
Enterprise gave most of us a lot of fun in the past, and i think who did not own EP years ago, they have fun now