2. COMMON CHARACTERISTICS

Some common assumptions are made for these implementations:

• The display format is chosen to be 80 columns x 24 rows of characters, except for the last mode which is 40 x 24.
• Each character is an 8 x 8 dot size with no spaces between adjacent rows and columns.
• The character generator to generate dot patterns for each character scan line is a 2k x 8 ROM, in this case a Synertek SY2316B.
• A 4k-byte Video Display RAM is utilized to permit slightly more than two complete pages of text data to be stored.