Text Mode Cursor: Difference between revisions
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added assembly code for moving cursor |
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Note that the 2 parameters 'row' & 'col' passed to the function above start from zero, not from 1. And keep in mind that in/out to [[VGA Hardware]] is a slow operation. So using the hardware registers to remember of the current character location (row, col) is bad practice -- and updating position after each displayed character is poor practice (updating it only when a line/string is complete is wiser and hiding it until a user prompt |
Note that the 2 parameters 'row' & 'col' passed to the function above start from zero, not from 1. And keep in mind that in/out to [[VGA Hardware]] is a slow operation. So using the hardware registers to remember of the current character location (row, col) is bad practice -- and updating position after each displayed character is poor practice (updating it only when a line/string is complete is wiser and hiding it until a user prompt is wisest) |
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===Source in assembly=== |
===Source in assembly=== |
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