 ColorCAM was originally developed and marketed under the name LAYCAD and was running on computers from ELTEC in Mainz, Germany, and HEMA in Aalen, Germany, using the Motorola 6809 CPU, one of the most powerful 8/16-bit processors at that time.To be able to address more than the maximal 64 kilobytes of RAM available with a 16-bit address space, these computers had special hardware to superimpose a memory window in this 16-bit address space, from a bigger storage with up to 512 Kbyte RAM.The ELTEC computer had a 512×256 pixel memory mapped graphic while the HEMA computer had a 640×400 pixel graphic using the NEC 7220 graphics controller chip.