 This required the use of software written using the relatively slower and less flexible BIOS interrupt call (014h), or software written exclusively for the DG-1.Video memory came out of that available for the operating system; if 256 kB of RAM was installed, only 204 kbytes might be available to the operating system and user's programs.Although "Creative Computing" termed the price of US$2895 "competitive," it was a very expensive system, and usually-needed additions such as more RAM and an external 5¼" drive drove the price higher yet.