DTK Computers

     Technical Information Sheet for PIM-640
     S=shorted, O=open           DIP switch 1=on 0=off

     SW1:Coprocessor              SW1:Floppys Installed    
	 2  Function                  7 8  Number of Floppy drives
	 1  Disabled                  1 1  One drive
	 0  Enabled                   0 1  Two drives
				      1 0  Three drives
     SW1:Display Select               0 0  Four drives
	 5 6  Display type        
	 1 1  EGA                 JP1:Reset Connector 
	 1 0  CGA (80x25)             S  Reset
	 0 1  CGA (40x25)             O  Normal Operation
	 0 0  Monochrome          
	 
     RAM Installed (-= horizontal jumper, |= vertical jumper)
	 JP3      JP4   Option   Bank 0   Bank 1   Banl 2  Bank 3
	 o-o o-o  o o   
		    |    256k    4164x9   4164x9   4164x9  4164x9  
	 o o o o  o o
		   
	 ------------------------------------------------------          
	 
	 o o o o  o o             
		  |      640k    41256x9  41256x9  4164x9  4164x9  
	 o-o o-o  o o             
		   
     P4:Speaker
	<1>  Data out
	<2>  +5Vdc
	<3>  Data out
	<4>  +5Vdc
     
     P1:Power Connector
	 <1>  Power Good        <7>  Ground
	 <2>  Not used          <8>  Ground
	 <3>  +12 VDC           <9>  -5 VDC
	 <4>  -12 VDC           <10> +5 VDC
	 <5>  Ground            <11> +5 VDC
	 <6>  Ground            <12> +5 VDC