Screenshots of MSB-OS

Machine Editor 2 - shows indexed machine code

Machine Editor 1 showing the boot sector loaded at 0,0,124,0.

Machine Editor 2 - shows indexed machine code

Machine Editor 1 showing the boot sector again, but this time in hex mode.

Machine Editor 2 - shows indexed machine code

Machine Editor 2 showing some load code.

Machine Editor 2 - shows indexed machine code

The F1 menu for loading code or data from disk into memory.

Machine Editor 2 - shows indexed machine code

The F2 menu for saving code or data back to disk from memory.

Machine Editor 2 - shows indexed machine code

You can switch into monitor program mode at any time, thus making it easy to debug any freeze in the OS or any application unless the fault's in an interrupt routine. The numbers in the last four lines of the screen show the contents of the CPU registers and the line of indexed machine code about to be run (bottom right).

Machine Editor 2 - shows indexed machine code

The control room - this is the MSB-OS equivalent of the desktop.

Machine Editor 2 - shows indexed machine code

Loading in an application program - in this case a more advanced version of the text editor.

loading the manual

F1 menu within text editor to load txt or tx+ files.

First page of the manual.

running embedded code

Running example code embedded in the text of the manual through the monitor program.

graphics experiment

Changing screen mode to draw.

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