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Although the CPC6128 was sold as a Color Colour Personal Computer, its configuration in the as delivered condition (referred to a good Home Computer with 128 KB RAM, 180 KB disc drive, and 32 KB Video RAM) referred to a good Home Computer. By adding 512 KB of RAM, an external 800 KB disc drive, a 20 MB hard disk, a RS232C serial interface as well as a Mouse, the initial CPC6128 was turned into a strong Personal Computer. Thus, thus a lot of personal business applications that existed for [[CP/M]]-80 could be executed with ease: [[WordStar]], [[Protext]], [[Multiplan]], [[SuperCalc 2]], [[DBase II]], [[DR Draw]], [[DR Graph]], [[Programming software]], to name a few.<br><br> '''COSMOS''' is a personal '''COS'''t '''MO'''nitoring '''S'''ystem developed by [[KSL|KSL]] for CPC6128 and runs under CP/M-80. It is a personal business application similar to the MSDOS-era PC applications and one of the most recent (2005-2020) projects developed for CP/M-80. Unlike most business applications for CP/M, COSMOS is built upon the '''mouse based graphics user interface''' as pioneered by Xerox at Palo Alto and popularized by Apple with the Lisa and Macintosh computers. <br><br> COSMOS requires the [[Dobbertin]] version of [[CP/M|CP/M 2.2]] (min 128 KB RAM) and an external disk drive (min 360 KB). Moreover, it supports the 512 KB [[Dobbertin Memory Expansion]], the 20 MB [[Dobbertin Harddisc]], the [[Amstrad Serial Interface]], the Amstrad Parallel [[Printer Port]], the [[CTM640/CTM644]] color colour monitor and the [[AMX Mouse]]. <br><br> COSMOS can be used on an everyday basis in order to edit the daily income, plan the monthly expenses and perform trial and error analyses aiming at maximizing the annual profit. In addition to its main functions, COSMOS contains the latest version of [[ASCII Tools]] (in order to deal with the COSMOS output files) as well as its own graphics module (not the standard [[GSX]]). By executing the setup installation utility (A>SETUP) that is included in the COSMOS original disk, the user can initialize any annual project or start a temporary project in order to become familiar with the COSMOS user interface and functions. As far as the controls are concerned, '''Cursor keys''' or '''Mouse''' can be used in order to control the pointer. '''[F0]''' key simulates the left button of the mouse, whereas '''[F.]''' key simulates the right button of the mouse. Left button can be used for (Yes), whereas the right button can be used for (No),(Next) or (On-Board) help. ESC key can be used to quit. <br><br>