A Universal Method of Copying the High Resolution Color Graph into the Printer
Shen Quanlin (Institute of Vibration Engineering, NAI Nanjing, 210016)
What is presented in this paper is a universal method of copying the high resolution color graph on the monitor into a printer. As an example, the methool of copying the EGA and/or VGA graphs into a 24 pin printer is discussed. The colors in the graphs and the scale to be copied can be specified as desired. The items can be performed in this method are stated as follows: the principle of displaying EGA/VGA graphs; the way of accessing the graph memory; the bit image mode of the 24 pin printer; the programming technique of reading data of EGA/VGA graph memory and converting the data into the bit image format to print it; the skill of TSR (Terminate and Stay Resident); the channel of specify the parameters of copying.