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Although the CPC6128 was sold as a Colour Personal Computer (CPC), its configuration in the as received condition referred to a Home Computer with , including 128 KB RAM, a 180 KB disc drive and 32 KB Video RAM. By adding an external 800 KB disc drive, 512 KB of RAM, a 20 MB hard disk, a RS232C serial interface as well as a Mouse, the CPC6128 was turned into a Competitive Personal Computer (CPC). Thus, a lot of serious business applications that existed for [[CP/M]]-80 could be executed with ease allowing the user to focus on his work and not on the hardware limitations of the system. Typical examples of such applications were [[WordStar]], [[Protext]], [[Multiplan]], [[SuperCalc 2]], [[DBase II]] and [[Programming software]]. <br><br> '''COSMOS''' is a personal '''COS'''t '''MO'''nitoring '''S'''ystem developed by [[KSL|KSL]] for CPC6128 and . It runs under [[CP/M 2.2]] which was the industry standard of the late 70s-early 80s. 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. This budget monitoring system is a business application similar to the MSDOS-era PC applications and one of the most recent (2020) projects developed for CP/M-80. Unlike most 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. The latest version of [[ASCII Tools]] is also included in the application. <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, in order to provide computational efficiency, 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]] colour monitor and the [[AMX Mouse]]. Graphics in COSMOS are implemented on the basis of its internal own [[GSX]]. <br><br> By executing COSMOS 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>

Upon installing COSMOS in drive B or HD20 it is suggested to execute COSMOS using all the available extra RAM (no RAM load minimization) and to use a new empty boot disk in drive A as the redundant disk. Notice that a full annual project of COSMOS, including the user attachments, the user block of invoices, the summary files as well as the user agenda notices requires minimum 350 KB of disc space. Finally, the software also contains the latest version of [[ASCII Tools]]. <br><br>