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FUNCTION 37: RESET DRIVE
Entry Parameters:
Register C: 25H
Registers DE: Drive Vector
Returned Value:
Register A: 00H
The Reset Drive function allows resetting of specified drives. The passed parameter is a 16-bit
vector of drives to be reset; the least significant bit is drive A:.
To maintain compatibility with MP/M, CP/M returns a zero value.
FUNCTION 40: WRITE RANDOM WITH ZERO FILL
Entry Parameters:
Register C: 28H
Registers DE: FCB Address
Returned Value:
Register A: Return Code
The Write With Zero Fill operation is similar to Function 34, with the exception that a previously
unallocated block is filled with zeros before the data is written.
5.2 Call Conventions CP/M Operating System Manual
5-35