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


entry   AH      44h 

	AL	0Fh	Set Logical Device (DOS 3.3+)

	BL      drive number:  0=default, 1=A:, 2=B:, etc. 

	BX      file handle 

	CX      number of bytes to read or write 

	DS:DX   data or buffer 

	DX      data 

return  AX      number of bytes transferred 

		or error code (call function 59h for extended error codes) 

		or status  00h     not ready 

			   0FFh    ready 

	CF	set if error
file: /Techref/int/21f/44sf/0f.htm, 0KB, , updated: 1999/4/26 12:35, local time: 2012/5/25 02:17,
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Robotics nuts!

Check out http://users.frii.com/dlc/robotics/projects/botproj.htm from Dennis Clark. This guy ROCKS! He has made (and sells but also releases code, docs, etc...) for a number of cool little robotic modules including whiskers, IR proximity detect and remote control, Sonar proximity detect, PWM, Servo, compass. Most of these use the little PIC 12C508 controller which costs basically nothing and is soooo tiny.
The 4 servos, 2400 baud serial servo controller is a wonder of magic and he sells the programmed chip for $8. Wow!

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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