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Function  44h   I/O Control for Devices (IOCTL)  Get or Set Device Information

entry AH 44h

AL 0Eh Get Logical Device (DOS 3.3+)

BL drive number (0=default)

return AL=0 block device has only one logical drive

assigned 1..n the last letter used to reference

the device (1=A:,etc)


file: /Techref/INT/21f/44sf/0e.htm, 0KB, , updated: 1999/4/26 12:35, local time: 2024/10/31 16:35,
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Quick, Easy and CHEAP! RCL-1 RS232 Level Converter in a DB9 backshell
Ashley Roll has put together a really nice little unit here. Leave off the MAX232 and keep these handy for the few times you need true RS232!

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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