Int 66

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TI Professional PC - SYSTEM INFORMATION (NOT A VECTOR!)

Desc: The low word of this vector contains the system memory size in paragraphs; the third byte contains the number of outstanding interrupt requests, and the fourth byte contains a description of the installed drive types (see #03517)

See Also: INT 60"TI Professional PC" - INT 67"TI Professional"

Bitfields for TI Professional drive type information: Bit(s) Description (Table 03517)

7 floppy drive D:
Has 80 tracks

6 floppy drive D:
Is double-sided

5 floppy drive C:
Has 80 tracks

4 floppy drive C:
Is double-sided

3 floppy drive B:
Has 80 tracks

2 floppy drive B:
Is double-sided

1 floppy drive A:
Has 80 tracks

0 floppy drive A:
Is double-sided

Category: Vendor-specific BIOS Extensions - Int 66h - T

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