“SIMONS’ BASIC EXTENSION” for Commodore 64 - Unlock the Inner Secrets of Your System!


Expand the capabilities of your Commodore 64 with “SIMONS’ BASIC EXTENSION.” Designed to be used in conjunction with your SIMONS’ BASIC cartridge, this extension provides a wealth of additional functionality and commands to take your programming skills to new heights.


Despite some damage to one corner of the box (as pictured), the overall condition of this set is very good. Let’s dive into what SIMONS’ BASIC EXTENSION has to offer:


• Extended programming aids including RENUMBER, DELETE, ALTER, HELP, and PROTECT, making programming tasks more efficient.

• An advanced array manipulation system with commands like ELEMENTS, ZER ARR, SET ARR, ADD ARR, SUB ALL, DIV ALL, and SORT.

• Numeric aids such as trigonometrical functions (GRAD and DEG), decimal to binary and hex conversion, and coordinate calculations (CALCX and CALCY).

• Memory manipulation commands like DEEK and DOKE, along with HIMEM and LOMEM for advanced memory configuration.

• Additional high-resolution, multi-color, and new low-resolution graphics commands for enhanced visual output.

• Twenty new SPRITE commands enabling smooth movement and vector-driven capabilities for up to eight sprites.

• Advanced music commands like FILTER, MODE, PULSE, and BEEP for incredible sound versatility.

• Two additional character sets accessible through FONT without compromising user memory.


With all these powerful features, SIMONS’ BASIC EXTENSION combined with SIMONS’ BASIC cartridge becomes the ultimate programming tool for your Commodore 64.


Don’t miss this opportunity to unlock the innermost secrets of your Commodore 64 and unleash your programming potential with SIMONS’ BASIC EXTENSION!