| 摘要 |
PURPOSE:To make a data buffer into a fixed size by storing a display character separately in a character code area to store a character code and in a bit map area to store a character attribute and replacing a Japanese shift code with a bit on a bit map. CONSTITUTION:A data buffer 32 is composed of a bit map area 33 and a character code area 34, 1 bit on the area 33 corresponds to 1 byte on the area 34, and the display character is expressed by the combination of them. When display character information is stored, a display character area 31 is searched for one character at a time from its top, an ANK character makes the bit on the area 33 into an OFF state and stores the character code in the area 34. When a Japanese shift-in code 35 appears, the following display characters are Japanese characters until a Japanese shift-out 36 appears, the bit corresponding onto the area 33 is made into an ON state, and the character code is stored in the area 34. Thus, the Japanese shift code can be deleted from on the buffer 32. |
