32 lines
940 B
Plaintext
32 lines
940 B
Plaintext
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AST RESEARCH, INC. TECHNICAL BULLETIN #TB-0335 11/18/87
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AST-COAX SERIES/API OPTION
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This Technical Bulletin is provided in order to supplement the
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documentation regarding the write direct to buffer (function
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19) and the cursor positioning (function 18) functions.
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Write direct to buffer documentation states that the cursor
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position must be initialized by a "Set cursor position for
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direct buffer write (function 18.)"
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To work properly, the cursor position (function 18) must be
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initialized at the beginning of the nanoprocessor display
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buffer. Initializing cursor position at the end of the buffer
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display causes the buffer to appear empty. The call made is:
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ENTRY: AX 18
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DX Cursor Position
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The cursor positions 0 through 79 correspond to the status line
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(operator information area). Position 80 corresponds to the
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upper left corner of the display screen.
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