DTK Computers

     Technical Information Sheet for PTM-1000V2
     S=shorted, O=open           DIP switch 1=on 0=off

     J1:Speaker                  J2:Keyboard Lock
	<1> Data out                <1> System power LED
	<2> +5VDC                   <2> Not used
				    <3> Ground
     J3:Reset Connector             <4> Keyboard inhibit
	<1> Select pin              <5> Ground
	<2> Ground   
				 J5:Hardware Turbo Switch
     J4:Turbo LED                   <1> Ground
	<1> LED data                <2> Select pin
	<2> Ground   
		
     SW1:Wait state               SW1:Base Memory
	 1 2 3 4  Option              1 2 3 4  Option
	 1     1  One Wait state        1      640k/384
	 0     0  Zero Wait state       0      512/512
		
     SW1:RAM installed            SW1:ROM Size
	 1 2 3 4  Option              7 8 9 10  Size
	     1    640k                1 1 0 0  32k (27128x2)
	     0    512k/1Mb            0 0 1 1  64k (27256x2)
		
     J8:Battery connector         SW1:Display Selection
	<1> 6VDC                      6  Option
	<2> Not used                  1  Color
	<3> Ground                    0  Monochrome
	<4> Ground                    
	
     J6:Power Connector      
	<12>  Power Good            <6>  Ground
	<11>  +5 VDC                <5>  Ground
	<10>  +12 VDC               <4>  -5 VDC
	 <9>  -12 VDC               <3>  +5 VDC
	 <8>  Ground                <2>  +5 VDC
	 <7>  Ground                <1>  +5 VDC
     
     RAM Installation
		DRAM Type
	Option  Bank 0    Bank 1
	------  --------  --------
	512k    41256x18  none
	640k    41256x18  4164x18
	1MB     41256x18  41256x18