If you were able to run the demos, z390 should be installed correctly. Doing an assembly from the GUI should work.
A few questions for you.
1. Since you mention bat files, I assume you are running Windows. Correct?
2. Where did you obtain z390? Are you using the z390_v1707.zip file from
www.z390.info?
3. Where did you install z390? What is the full directory path?
4. Have you tried to assemble your program from a terminal window?
4.1. Change directory to the z390 bat subdirectory.
4.2. Open a command prompt window.
4.3. Enter
asm \full-path-name-to-subdirectory-containing-your-program\your-program-name
5. How are you starting the GUI? I assume you are using Z390.BAT in the bat subdirectory of z390. Correct?
6. How are you trying to assemble your program in the GUI? Here are the steps I follow.
6.1. Start the GUI.
6.2. In the "Command: text box type something like
asm \full-path-name-to-subdirectory-containing-your-program\your-program-name
I run Linux, not Windows. I have a z390/tests subdirectory of my home directory that contains many test files, one of them being IEFBR14.MLC. After starting the GUI for the z390_v1707.zip version of z390 I entered
asm /home/xxxxxxxx/z390/tests/IEFBR14
in the "Command:" text box and pressed Enter. Here's what I saw in the text area above the text box.
Z390I V1.7.06
Copyright 2011 Automated Software Tools Corporation
z390 is licensed under GNU General Public License
Log file = /home/john/lib/z390/z390_2021_0916_213127.LOG
Enter command or help
*** 09/16/21 21:31:44 CMD task started
21:31:45 IEFBR14 MZ390 START USING z390 V1.7.06 ON J2SE 1.8.0_201 09/16/21
21:31:45 IEFBR14 MZ390 ENDED RC= 0 SEC= 0 MEM(MB)= 42 IO=245
*** 09/16/21 21:31:45 CMD task ended TOT SEC=2 TOT LOG IO=4
See if this helps. Let us know if you have any additional questions.
Regards,
John Ganci