Release Notes

September 20, 2024

• The TEST instruction has been added.
• Indirect memory access with offset has been added. For example, mov al, [bx+8].

July 31, 2024

The method for adding devices has been changed. Users no longer choose configurations but can select devices arbitrarily.

September 10, 2023

The interrupt vector addresses used by the system are now protected. If a user attempts to write to these addresses, an error will occur.

August 22, 2023

Launch of the new version of VonSim! Compared to the previous version, this release includes:

• animations for microinstructions;
• support for mobile phones and tablets;
• documentation accessible from within the application;
• offline mode (PWA);
• more advanced text editor, with support for opening and saving files;

Many internal changes were made to VonSim's architecture. The most significant for users are:

• smarter assembler that detects syntax and semantic errors, providing clearer and more specific error messages;
• support for direct memory access, such as mov al, [1234h];
• support for character literals, such as cmp al, '0';

2019

Input/output functionality was added to the simulator.

2017

First version of VonSim. Currently stored in the legacy branch. Compared to MSX88, this version:

• is web-based, requiring no installation and is cross-platform;
• has a more modern graphical interface;
• features an integrated text editor with syntax highlighting.

1988

Rubén de Diego Martínez releases the MSX88 simulator for the Universidad Politécnica de Madrid.