DTK Computers
Technical Information Sheet for PTI-208A
S=shorted, O=open DIP switch 1=on 0=off
Switch setting for EGA as Primary Adapter
Type of adapter attached.
1 2 3 4 EGA Monochrome CGA
--------------------------------------------
1 0 0 1 Color(40x25) Secondary None
0 0 0 1 Color(80x25) Secondary None
1 1 1 0 EGA Emulation Secondary None
0 1 1 0 EGA HiRes Secondary None
1 0 1 0 Monochrome None Secondary
0 0 1 0 Monochrome None Secondary
Switch setting for EGA as Secondary Adapter
Type of adapter attached.
1 2 3 4 EGA Monochrome CGA
--------------------------------------------
1 1 1 1 Color(40x25) Primary None
0 1 1 1 Color(80x25) Primary None
1 0 1 1 EGA Emulation Primary None
0 0 1 1 EGA HiRes Primary None
1 1 0 1 Monochrome None Primary
0 1 0 1 Monochrome None Primary
JP1:Pin 2 Interface JP3:EGA Address
1-2 S EGA monitor 1-2 S 3XX
2-3 S CGA monitor 2-3 S 2XX (Not supported)
J4:Feature Connector
<1> GND <17> FEAT1
<2> -12V <18> BLANK
<3> +12V <19> FEAT 0
<4> J1 <20> FC1
<5> J2 <21> FC0
<6> G'OUT <22> G'/I
<7> R'OUT <23> B'/V
<8> B'OUT <24> HIN
<9> ATRS/L <25> VIN
<10> B'OUT <26> 14MHz
<11> G OUT <27> Internal
<12> G <28> EXT OSC
<13> R' <29> V OUT
<14> B <30> H OUT
<15> R <31> GND
<16> R OUT <32> +5V
JP1:Light Pen Interface Printer Port
<1> Light Pen Input JP3 JP4 JP10 Function
<2> Not used S S O LPT1
<3> Light Pen Switch O S S LPT2
<4> Ground X O X Disabled
<5> 5 volts
<6> 12 volts
