DTK Computers

     Technical Information Sheet for PEM2035
     S=shorted, O=open               DIP switch 1=on 0=off
     Utility Diskette is UTILDSK3.1_0
     Uses 32bit Memory Board PEI-306

     Total M/B Jumper  SW1            32-bit  Starting Address of
     Memory     W1    1 2 3 4         Memory  AT Bus RAM Card
      1MB      2-3    1 1 1 1          2MB     260000h
      2MB      2-3    1 0 1 1          4MB     460000h
      4MB      1-2    0 1 1 0          8MB     860000h
                                      16MB      none
     W1:RAM Type
        1-2 S  1MB SIMMS             W2:16-bit I/O Wait State
        2-3 S  256/512 SIMMS            1-2 S  One WS
                                        2-3 S  Two WS
     W3:8-bit I/O Wait State
        1-2 S  4 WS                  W4:Turbo Switch Connector
        2-3 S  5 WS                     1-2  S  8 Mhz
                                        2-3  S  Keyboard Control
     W5:Turbo LED                       No Cap  20 MHz always
        <1> Ground
        <2> Turbo LED                W6:Video Select
        <3> Ground                      1-2 S  Monochrome
                                        2-3 S  Color
     W7:Math Coprcessor Select                                        
        <1> Power LED                J1:Keyboard lock                                  
        <2> Key                         1-2 S Installed         
        <3> Ground                      2-3 S Not Installed
        <4> Keyboard inhibit                      
        <5> Ground                   J2:Reset Switch   
                                        <1> Hardware Reset
     J3:Speaker connector               <2> Ground                                   
        <1> Speaker
        <2> N.C.                     SW1:Total Memory
        <3> Ground                       3 4  Memory Size
        <4> Vcc                          1 1  <= 2MB
                                         1 0  <= 4MB
                                         0 1  <= 8MB
                                         0 0  <=16MB
     J2:Power Connector
        <1>  Power Good           <7>  Ground
        <2> +5VDC                 <8>  Ground
        <3> +12VDC                <9> -5VDC
        <4> -12VDC               <10> +5VDC
        <5>  Ground              <11> +5VDC
        <6>  Ground              <12> +5VDC

     RAM Installation
     Size  DRAM Type
     1MB   256Kbitx4 SIP
     2MB   512Kbitx4 SIP
     4MB   1Mbitx4 SIP