Need help learning IBM mainframe assembly language? VisibleZ can help you visualize exactly what the mainframe is doing as an assembler program executes. Besides the software, this site provides many hours of lessons that will build your assembler skills. These lessons are specifically designed to accompany VisibleZ. Download the product and try out each lesson.
| Installation and Getting Started with VisibleZ (PDF) | A short guide to starting out |
| RunnerB.jar | An executable jar containing a BlueJ project. Comes with all the source code and class files for a BlueJ project. You will need a Java 7 or 8 runtime. Includes many new instructions for grande arithmetic. |
| RunnerB1366.jar | (For low resolution machines 1366 x 768) An executable jar containing a BlueJ project. Comes with all the source code and class files for a BlueJ project. You will need a Java 7 or 8 runtime. Supports the same instruction set as the version above |
| RunnerB.jar | (Updated 2/19/2017)An experimental version that provides support for z390 users. VisibleZ can convert z390 file source listings into object code that runs in VisibleZ. This is an executable jar containing a BlueJ project. Currently the conversion routines work for Windows only. Let me know if you would like to see this feature for Linux. Fixes an OPEN problem with z390 generated code. Comes with all the source code and class files for a BlueJ project. You will need a Java 7 or 8 runtime. Also includes many new RXY-a instructions. |
| A Codes.zip | A zip file containing object code programs that run in VisibleZ. Each program is designed to help you learn about a particular System/z instruction. Unzip this file and then use to settings tab in VisibleZ to point at the directory. |
| VZ Installation Instructions | How to install VisibleZ |
| A VZ Download | The latest version of VisibleZ for screen resolution 1920x1080 |
| A VZ Download | The latest version of VisibleZ for screen resolution 1366x768 |
| A VZ Download | The latest version of VisibleZ for screen resolution 1280x800 |
| VisibleZ - Lesson 1 .pdf |
| VisibleZ - Lesson 2 .pdf |
| Reading Object Code .pdf |
| Base/Displacement Addressing .pdf |
| Explicit Addressing .htm |
| System z Architecture .pdf |
| Linkage Conventions .pdf |
| Build the MVC2 Instruction .htm |
| Build the Add Logical Instruction .htm |
| Build the Compare Logical Character Under Mask Instruction .htm |