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

entry   AH      44h 

	AL	02h	Read CX bytes to device in DS:DX from BX control chan
file: /Techref/INT/21f/44sf/02.htm, 0KB, , updated: 1999/4/26 11:36, local time: 2024/12/18 00:24,
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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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