Microcode simulation for various IBM360 machines. Currently only the IBM360 model 30 is simulated. The simulator uses SDL to draw a front panel and a picture of configured devices. Currently only the Model 1442 Card Reader/Punch is supported.

The simulator will eventually include simulations for the:

• IBM 360 Model 30 2030
• IBM 360 Model 50 2050
• IBM 360 Model 65 2065

Others may be added it more microcode is recovered.

Planed devices include:

• IBM 1442 Card Reader/Punch.
• IBM 1403 Printer.
• IBM 2540R Card Reader.
• IBM 2540P Card Punch.
• IBM 2841 (IBM 2311 disk controller). Microcode based.
• IBM 2844 (IBM 2314 disk controller). Microcode based.
• IBM 2415 Tape drive.
• IBM 2803 Tape controller.
• IBM 2703 Terminal controller.

To Build on Linux:

   mkdir build 
   cd build
   cmake ..
   make

To Build on Windows: Install SDL2 libraries and headers in C:\SDL2

Under Bash prompt:

   mkdir build
   cd build
   cmake .. -G "Visual Studio 16 2019" -DCMAKE_BUILD_TYPE=Debug  -DSDL2_PATH="c:\SDL2" \
     -DSDL2_IMAGE_INCLUDE_DIR="c:\SDL2" -DSDL2_IMAGE_LIBRARY="c:\SDL2\lib\x64\SDL2_image.lib" \
     -DSDL2_TTF_PATH="c:\SDL2"
   cmake --build .

Instruction

Microsim360 now supports a configuration file. The -f option gives the name of the configuration file to read. The configuration file has the format:

device number address options.

Each device processes it's own options. Standard options consist of a name optionally followed by a "=" followed by a name. If the name is started with a ", the value consists of the characters between the "'s. Otherwise options are terminated by a blank space. There can only be one CPU defined. This should be defined before any devices are defined.

On startup there will be two windows open. One the front panel, the other devices. On the front panel there is a pair of numbers on the top, the first is the number of cycles run per 20ms chunck. This number should stay around 20000, if it is less you are not running full speed. The second fps=# is how many ms it is taking to update the displays. This number should stay under 15. If it gets over 15 the system might be slow responding to mouse presses.

To see rewind tape animation, select one of the tape drives. In the popup window, press the "Reset" button, the ready light should go out. Next press "EOM" the drive will move to the end of tape. Then press "Load/Rewind" and the tape will start to rewind. It will take about 1-2 minutes to rewind to the load point.

To change the tape loaded press, "Reset", then press "Unload", the supply reel and tape will be removed. Change the file name, then press "Load/Rewind" the tape will now show. Press "Start" to enable the drive.

Connect a telnet session to 3270 for the console.

To IPL BOS, select the printer, enter a file name, and press "Save". Next press "Start" to bring the printer online. On the front panel press "INT TMR" to flip the switch up exposing the OFF indicator. Next select "0C0" in the "Load Unit" dials. Pressing on the right side will rotate the dials counter clockwise, on the left clock wise. Next press the "LOAD" button. When the "WAIT" light comes on press "" on the console. This will give the "Enter IPL statments". To attach a deck to the card reader, select the card reader. Enter the file name into "Hopper:". Press "LOAD" the number of cards loaded will be shown in the last column. Press "END OF FILE" to turn on the EOF indicator. Then "Start" the ready light should now light.

To run stand alone card test programs, Open the card reader, enter the deck name in hopper. Change the AUTO to EBCDIC, then press LOAD, End of File, Start. On front panel set "Load unit" to 0x00A. Then press "LOAD".