PCB: STAG 100-0021 lss. 7 IC1 Toshiba TMP8255AP-5 Programmable Peripheral Interface (PPI) IC2 Rockwell 10937P-40 A8201-16 16 Characters Display Controller IC3 - Special Circuit Board IC4 Motorola SN74LS109AN Dual JK Negative Edge-Triggered Flip-Flop IC5 Motorola SN74LS109AN Dual JK Negative Edge-Triggered Flip-Flop IC6 UMC UM6551A Asynchronous Communication Interface Adapter (ACIA) IC7 Motorola SN74LS109AN Dual JK Negative Edge-Triggered Flip-Flop IC8 Hy-Q 16MHz Crystal Oscillator IC9 Samsung MC1489A Quad Line Receiver IC10 Motorola MCM4164BP-15 64K x 1-bit Dynamic RAM IC11 Goldstar GD75188 Quad Line Driver IC12 Motorola MCM4164BP-15 64K x 1-bit Dynamic RAM IC13 Hitachi HM6116P-4 2048-Word x 8-Bit Static RAM IC14 Signetics N82S153N Fuse-Programmable Logic Array (FPLA) IC15 Motorola MCM4164BP-15 64K x 1-bit Dynamic RAM IC16 Motorola MCM4164BP-15 64K x 1-bit Dynamic RAM IC17 SGS M2764A NMOS 64K (8KB x 8) UV EPROM IC18 National DM74LS138N 3-to-8 Line De-multiplexer IC19 Motorola MCM4164BP-15 64K x 1-bit Dynamic RAM IC20 National DM74LS138N 3-to-8 Line De-multiplexer IC21 Motorola MCM4164BP-15 64K x 1-bit Dynamic RAM IC22 Seeq DQ2816A-350 Parallel Electrically-Erasable PROM (EEPROM) IC23 Signetics N82S153N Fuse-Programmable Logic Array (FPLA) IC24 Motorola MCM4164BP-15 64K x 1-bit Dynamic RAM IC25 National DM74LS132N Quad 2-Input NAND Gate with Schmitt Trigger Input IC26 Motorola MCM4164BP-15 64K x 1-bit Dynamic RAM IC27 NEC D780C (Zilog Z80) 8 bit NMOS Microprocessor 2.5MHz IC28 DIL 16M 101G ? IC29 Texas Instruments SN74LS157N Quad 2-Input Multiplexer IC30 Texas Instruments SN74LS157N Quad 2-Input Multiplexer IC31 Texas Instruments SN7406N Hex Inverter Buffers IC32 Toshiba TMP8255AP-5 Programmable Peripheral Interface (PPI) IC33 Toshiba TMP8255AP-5 Programmable Peripheral Interface (PPI) IC34 Toshiba TMP8255AP-5 Programmable Peripheral Interface (PPI) IC35 Bourns 4116R-001-221 DIP Resistor Network 220 Ohm 2.25 Watts IC36 Bourns 4116R-001-221 DIP Resistor Network 220 Ohm 2.25 Watts IC37 Motorola ULN2004A Seven Darlington Arrays IC38 Bourns 4116R-001-221 DIP Resistor Network 220 Ohm 2.25 Watts IC39 Motorola ULN2004A Seven Darlington Arrays IC40 Bourns 4116R-001-221 DIP Resistor Network 220 Ohm 2.25 Watts IC41 Motorola LM339N Quad Single Supply Comparator IC42 Micro Power Systems MP7524JN Multiplying 8-Bit Digital-to-Analog Converter (DAC) IC43 Texas Instruments TL072CP Dual Low-Noise JFET-Input General-Purpose Operational Amplifier IC44 Micro Power Systems MP7524JN Multiplying 8-Bit Digital-to-Analog Converter (DAC) IC45 Texas Instruments TL072CP Dual Low-Noise JFET-Input General-Purpose Operational Amplifier IC46 Micro Power Systems MP7524JN Multiplying 8-Bit Digital-to-Analog Converter (DAC) IC47 Texas Instruments TL072CP Dual Low-Noise JFET-Input General-Purpose Operational Amplifier X1 Sunny 1.8432MHz Quartz Crystal TR1 MPSA56 PNP General Purpose Amplifier TR2 ? TR3 ? TR4 2N5550 NPN High Voltage Transistor TR5 ? TR6 2N5550 NPN High Voltage Transistor TR7 MPSA56 PNP General Purpose Amplifier TR8 MPSA56 PNP General Purpose Amplifier TR9 2N5550 NPN High Voltage Transistor TR10 TE02226 ? TR11 MPSA56 PNP General Purpose Amplifier TR12 MPSA56 PNP General Purpose Amplifier TR13 TE02226 ? TR14 TE02226 ? TR15 2N5550 NPN High Voltage Transistor TR16 MPSA56 PNP General Purpose Amplifier TR17 MPSA56 PNP General Purpose Amplifier TR18 2N5550 NPN High Voltage Transistor TR19 2N5550 NPN High Voltage Transistor TR20 2N5550 NPN High Voltage Transistor TR21 2N5550 NPN High Voltage Transistor TR22 2N5550 NPN High Voltage Transistor TR23 2N5550 NPN High Voltage Transistor TR24 2N5550 NPN High Voltage Transistor TR25 TEO2226 ? TR26 TEO2226 ? TR27 TEO2226 ? TR28 TEO2226 ? REG1 78L12CP M515 Low Current Positive Voltage Regulator REG2 79L12CP M545 Low Current Negative Voltage Regulator VR1 DTG-10K Variable Resistor 10K Ohm VR2 DTG-10K Variable Resistor 10K Ohm VR3 DTG-10K Variable Resistor 10K Ohm C1 Electrolytic Capacitor, 1uF 63V C2 Electrolytic Capacitor, 1uF 63V C3 470pF C4 Electrolytic Capacitor, 100uF 10V C5 470pF C6 Tantalum Electrolytic, 15uF 25V C7 470pF C8 470pF C9 Tantalum Electrolytic, 15uF 25V C10 470pF C11 470pF C12 470pF C13 470pF C14 470pF C15 470pF C16 470pF C17 470pF C18 470pF C19 470pF C20 470pF C21 470pF C22 Electrolytic Capacitor, 47uF 10V C23 470pF C24 ? C25 470pF C26 Not mounted C27 470pF C28 470pF C29 0.47uF C30 0.47uF C31 470pF C32 470pF C33 0.47uF C34 470pF C35 470pF C36 470pF C37 470pF C38 470pF C39 ? C40 Not mounted CON B Power connector, 1 pin CON D Serial, 25 pins D-SUB CON E Expansion, 32 x 3 pins DIN 41612 CON K Keyboard, 13 pins CON L Module connector, 16 x 3 pins DIN 41612 CON R Module connector, 16 x 3 pins DIN 41612 CON S Power supply, 11 pins CON X Power supply, 11 pins Not used? VCL Yellow VHT Brown -15V Black +15V Gray 5V Blue 5V Blue 0V Green 0V Green