21 lines
391 B
PHP
21 lines
391 B
PHP
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; Definitions of interesting variables in ROM BIOS data segment at 40:0
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;
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; Revision History
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; ================
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; 7/13/90 md Created
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ROMBIOS_DATA segment AT 040h
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org 049h
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CRT_Mode db ? ; current screen mode
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CRT_Cols dw ? ; current number of columns
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org 084h
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CRT_Rows db ? ; current number of screen rows
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DEFAULT_ROWS equ 24 ; standard default for screen height
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ROMBIOS_DATA ends
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