[[WordStar]] for word processing, [[Multiplan]] for editing spreadsheets, [[
dBASE]] for developing databases as well as more than 13 high level languages for making customized applications were typical personal business applications that were running in CPC under CP/M-80. However, a CP/M-80 application dealing with the personal or the family budget was missing. <br>
'''COSMOS''' is a personal COSt MOnitoring System written by [[KSL|KSL]] which runs under CP/M-80. It is a personal business application similar to the MSDOS-era PC applications and one of the most recent projects developed for CP/M-80. COSMOS runs under [[CP/M|CP/M 2.2]] (the Dobbertin 63 KB TPA version) and 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 can be used to edit the daily income, plan the monthly expenses and perform trial and error analyses in order to maximize the annual profit. COSMOS supports any external high capacity drive (up to 800 KB), the [[Dobbertin
RAM expansion]] (up to 512 KB), the [[Dobbertin hard disk]] (20 MB HD), the serial RS232C interface, any dot matrix printer, the CTM color monitor (for the 16-color screen saver) and the [[AMX Mouse]]. <br>
By using the setup installation utility of COSMOS 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 escape.
Upon installing the application in drive B or HD20 it is suggested to execute COSMOS using all the available extra RAM (no RAM load minimization) and using a new empty boot disk in drive A as the redundant disk (user level software RAID-1 operation).
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. <br><br>
'''History of COSMOS''' <br><br>