| 摘要 |
A variable size and position dialog area or alphanumeric area is provided for the screen of a computer terminal in response to a single line of data from a data bus, containing the numerical indication of the initial line of a plurality of lines of alphanumeric information to be displayed and the numerical indication of the last line of a plurality of lines of alphanumeric information to be displayed. The numerical indications are successively loaded to a state machine operating as a counter which disables the alphanumeric display during a first counting operation and enables the alphanumeric display for the duration of a second counting operation.
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