User`s guide

BDOS FUNCTION 29: GET READ-ONLY VECTOR

Entry Parameters:

Returned Value:

Function 29 returns a bit vector in register pair HL that indicates which drives

have the temporary Read-Only bit set. The Read-Only bit can be set only by a BDOS

Write Protect Disk call.

The format of the bit vector is analogous to that of the login vector returned by

Function 24. The least significant bit corresponds to drive A, while the most signifi-

cant bit corresponds to drive P.

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BDOS Function Calls CP/M 3 Programmers Guide