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Seequa-Computer-Preservation
Reverse engineering of the Seequa Chamelon PC
| Reference | Value | Description |
|---|---|---|
| Q1 | MJE180 | NPN transistor, base/collector/emitter |
| Q4 | 2N5225 | NPN transistor, emitter/base/collector |
| U1 | 8088_Max_Mode | 8088 (maximum mode), 8-Bit HMOS Microprocessor, PDIP-40 |
| U2 | 8087 | Math Coprocessor for Intel 8086/8088/80186/80188 microprocessors, PDIP-40 |
| U3 | XD184000xP | 8-bit General Purpose Microprocessor, 8-bit data bus, 16-bit address bus, 4 / 6.17 / 8 MHz, DIP-40 (600 mil) |
| U4 | 8284 | Clock Generator and Driver for i8086/88 Microcontrollers, PDIP-18 |
| U5,U17,U18,U68,U106,U120,U143 |
| 74LS244 |
| Octal Buffer and Line Driver With 3-State Output, active-low enables, non-inverting outputs |
| U6-U11 | 2764 | 64 KiBit - EPROM, 2732 Compatible (NC Pin 26 set to Vcc) |
|---|
| U12 | 8288 | Bus Controller for Intel 8086/8088/80186/80188 microprocessors, DIP-20 |
|---|
| U13,U75,U165 | PAL16L8 | Programmable Array Logic (PAL), Active-Low Combinatorial, DIP-20 / PLCC-20 |
|---|
| U14 | X2210 | Xicor X2210 NOVRAM |
|---|
| U15 | 74LS156 | Dual 2 to 4 lines Decoder/Demultiplexer, Open Collector |
|---|
| U16 | 7400 | quad 2-input NAND gate |
|---|
| U19,U65,U66,U90,U103,U105 | 74LS245 | Octal BUS Transceivers, 3-State outputs |
|---|
| U20,U21,U69-U71 | 74F157 | Quad 2 to 1 line Multiplexer |
|---|
| U22-U57 | TMS4164 | 65536 x 1 bit Dynamic RAM, 120/150ns access time, single 5V ±10% power supply, TTL compatible inputs, DIP-16 (Epoxy/Plastic package) |
|---|
| U58 | HD46505SP | CRT Controller 1MHz, DIP-40 |
|---|
| U59 | 8253 | Programmable Interval Timer, PDIP-24 |
|---|
| U60 | 8259 | 8259, Programmable Interrupt Controller, PDIP-28 |
|---|
| U61 | 8237 | Programmable DMA Controller, PDIP-40 |
|---|
| U62 | 74LS08 | Quad And2 |
|---|
| U63,U64 | 6116 | 2Kx8Bit SRAM |
|---|
| U67,U169 | 74LS374 | 8-bit Register, 3-state outputs |
|---|
| U72,U73 | TMS4416 |
|---|
| U74 | SN74PL16L8-1N | Programmable Array Logic (PAL), Active-Low Combinatorial, DIP-20 / PLCC-20 |
|---|
| U76 | SN74LS280N | Parity Generator/Checker |
|---|
| U77,U89,U136,U175 | 74LS04 | Hex Inverter |
|---|
| U78,U83,U91,U104 | 74LS373 | 8-bit Latch, 3-state outputs |
|---|
| U79,U80 | PAL16R8 | Programmable Array Logic (PAL), Active-Low Combinatorial, DIP-20 / PLCC-20 |
|---|
| U81,U107 | 74LS157 | Quad 2 to 1 line Multiplexer |
|---|
| U82,U163 | 74LS00 | quad 2-input NAND gate |
|---|
| U84 | UPD765AC |
|---|
| U85 | 8291A | Intel GPIB Talker/Listener, DIP-40 |
|---|
| U86 | 8292 | Intel GPIB Controller, DIP-40 |
|---|
| U87,U88 | 8293 | Intel GPIB transceiver, DIP-28 |
|---|
| U92,U110,U122 | 74LS273 | 8-bit D Flip-Flop, reset |
|---|
| U93,U113,U115 | 74LS670 | 4 x 4 Register Files 3-State Outputs |
|---|
| U94 | 74LS173 | 4-bit D-type Register, 3 state out |
|---|
| U95,U116,U173 | 74LS107 | Dual JK Flip-Flop, reset |
|---|
| U96,U97 | 74F257N | Quad 2 to 1 Multiplexer |
|---|
| U98 | DMPAL12L6NC | Programmable Array Logic (PAL), Active-Low Combinatorial, DIP-20 / PLCC-20 |
|---|
| U99 | PAL16R4 | Programmable Array Logic (PAL), Active-Low Combinatorial, DIP-20 / PLCC-20 |
|---|
| U100 | LM2903 | Low-Power, Low-Offset Voltage, Dual Comparators, DIP-8/SOIC-8/SOP-8/TSSOP-8/VSSOP-8 |
|---|
| U101,U150,U158 | PAL20L10 | Programmable Array Logic (PAL), Active-Low Combinatorial, DIP-24 |
|---|
| U102,U132-U134,U141 | 74LS74 | Dual D Flip-flop, Set & Reset |
|---|
| U108,U112,U159 | 74LS393 | Dual BCD 4-bit counter |
|---|
| U109,U121,U123 | 74LS166 | Shift Register 8-bit, parallel load |
|---|
| U111,U146 | PAL18L4 | Programmable Array Logic (PAL), Active-Low Combinatorial, DIP-24 |
|---|
| U114,U135 | 74F374 | 8-bit Register, 3-state outputs |
|---|
| U117 | 74F04 | Hex Inverter |
|---|
| U118,U126 | 74LS138 | Decoder 3 to 8 active low outputs |
|---|
| U119 | 8274 | Intel 8274 Multi-Protocol Serial Controller (MPSC) |
|---|
| U124,U125 | 74F257 | Quad 2 to 1 Multiplexer |
|---|
| U127 | 74LS125 | Quad buffer 3-State outputs |
|---|
| U128,U149 | 74LS175 | 4-bit D Flip-Flop, reset |
|---|
| U129,U130,U171 | 74LS221 | Dual Monostable |
|---|
| U131,U156,U157,U168 | 74LS240 | Octal Buffer and Line Driver With 3-State Output, active-low enables, inverting outputs |
|---|
| U137 | 74S374N | 8-bit Register, 3-state outputs |
|---|
| U138 | 74LS368 | Hex Bus Driver inverter, 3-state outputs |
|---|
| U139 | 74LS86 | Quad 2-input XOR |
|---|
| U140,U153,U162 | 74LS367 | Hex Bus Driver 3-state outputs |
|---|
| U142 | 74LS299 | 8-bit Universal shift/storage Register |
|---|
| U144 | DM74LS07N | Hex Buffers and Drivers With Open Collector High Voltage Outputs |
|---|
| U145 | PAL12L6 | Programmable Array Logic (PAL), Active-Low Combinatorial, DIP-20 / PLCC-20 |
|---|
| U147,U148,U167 | 74LS174 | Hex D-type Flip-Flop, reset |
|---|
| U151 | PAL20L2 | Programmable Array Logic (PAL), Active-Low Combinatorial, DIP-24 |
|---|
| U152 | 74LS155 | Dual 2 to 4 lines Decoder/Demultiplexer |
|---|
| U154 | 74LS161 | Synchronous 4-bit programmable binary Counter |
|---|
| U155 | 74LS10 | Triple 3-input NAND |
|---|
| U160 | 74LS123 | Dual retriggerable Monostable |
|---|
| U161,U170 | PAL16R6 | Programmable Array Logic (PAL), Active-Low Combinatorial, DIP-20 / PLCC-20 |
|---|
| U164 | 74LS02 | quad 2-input NOR gate |
|---|
| U166 | 74LS05 | Inverter Open Collect |
|---|
| U172 | LF351N | Wide bandwidth single JFET operational amplifier, DIP-8 |
|---|
| U174 | 74LS14 | Hex inverter schmitt trigger |
|---|
| U176 | NE558 | Quad Monostable Timer |
|---|
| C1,C90 | 20pF | Unpolarized capacitor, small symbol |
|---|
| C2-C4,C93,C94,C99,C100,C115-C120 | 0.1uF | 0.1uF Dipped Tantalum, 35V |
|---|
| C5 | 0.2µF | Unpolarized capacitor, small symbol |
|---|
| C6 | 0.5µF | Unpolarized capacitor, small symbol |
|---|
| C7,C15,C16,C24,C25,C34,C42,C67,C114 | 0.1µF | 0.1uF Dipped Film, ±10%,Unpolarized capacitor ceramic filter cap,Unpolarized capacitor, small symbol |
|---|
| C8-C14,C17-C23,C26-C33,C35-C41,C82-C85,C113 | C_Bypass_5mm | 0.1uF Dipped Film, ±10% |
|---|
| C61-C64,C69 | 0.01µF | 0.01uF Dipped Tantalum, 35V,Unpolarized film capacitor, 400V |
|---|
| C65,C66,C68,C73-C81 | C_Small | Unpolarized capacitor, small symbol |
|---|
| C87,C88,C96 | 1000pF | Unpolarized capacitor, small symbol,Unpolarized dipped metallized polyester film capacitor |
|---|
| C89 | C_Bypass_3.8mm | 0.1uF Dipped Tantalum, 35V |
|---|
| C91 | C_Trim_Differential | Differential variable capacitor with two stators |
|---|
| C92 | C_Bypass_Ceramic_2.54mm | HV Dipped Ceramic ±7.5% |
|---|
| C97,C98,C101,C102 | C_Bypass_2.54mm | 0.1uF Dipped Tantalum, 35V |
|---|
| C103 | 0.1μF | HV Dipped Ceramic ±7.5% |
|---|
| C105 | 10nF | Unpolarized dipped metallized polyester film capacitor |
|---|
| C106 | 47µF | Polarized electrolytic capacitor, 10V |
|---|
| C108 | C_Polarized | Polarized electrolytic capacitor |
|---|
| C109 | 500pF | Unpolarized capacitor, small symbol |
|---|
| C110 | 200pF | Unpolarized capacitor, small symbol |
|---|
| D1 | CR-1 | Light emitting diode |
|---|
| D2 | D_Zener | Zener diode |
|---|
| FB1,FB2 | FerriteBead | Ferrite bead |
|---|
| J1,J12,J13 | Conn_02x17_Odd_Even | Generic connector, double row, 02x17, odd/even pin numbering scheme (row 1 odd numbers, row 2 even numbers), script generated (kicad-library-utils/schlib/autogen/connector/) |
|---|
| J2 | Conn_02x13_Odd_Even | Generic connector, double row, 02x13, odd/even pin numbering scheme (row 1 odd numbers, row 2 even numbers), script generated (kicad-library-utils/schlib/autogen/connector/) |
|---|
| J6 | Gameport Header | Gameport header for cable to DE-15 connector |
|---|
| J7 | KBD | Generic connector, single row, 01x05, script generated (kicad-library-utils/schlib/autogen/connector/) |
|---|
| J8 | LPT_IDC | 26-Pin Parallel Port IDC Header |
|---|
| J9 | PC Speaker | Generic connector, single row, 01x02, script generated (kicad-library-utils/schlib/autogen/connector/) |
|---|
| J10 | Composite Jack | Generic connector, single row, 01x02, script generated (kicad-library-utils/schlib/autogen/connector/) |
|---|
| J11 | Conn_02x05e | Generic connector, double row, 02x05, top/bottom pin numbering scheme (row 1: 1...pins_per_row, row2: pins_per_row+1 ... num_pins), script generated (kicad-library-utils/schlib/autogen/connector/) |
|---|
| J14 | Power Connector | Generic connector, single row, 01x08, script generated (kicad-library-utils/schlib/autogen/connector/) |
|---|
| J15 | RESET SW | Generic connector, single row, 01x02, script generated (kicad-library-utils/schlib/autogen/connector/) |
|---|
| J16 | Light Pen | Generic connector, single row, 01x06, script generated (kicad-library-utils/schlib/autogen/connector/) |
|---|
| J17 | Monitor Header | Generic connector, single row, 01x06, script generated (kicad-library-utils/schlib/autogen/connector/) |
|---|
| OSC1 | 16.0MHz | Crystal Clock Oscillator, DIP14-style metal package |
|---|
| R1,R2,R40,R42,R43 | 510Ω | Resistor, small symbol |
|---|
| R3,R4,R10,R17,R17B1,R38,R39,R54-R57,R62-R64,R75,R76 | ??Ω | Resistor, small symbol |
|---|
| R5,R6,R53,R67,R79 | 300Ω | Resistor, small symbol |
|---|
| R7,R41 | 27Ω | Large 2W Gray-body Resistor,Resistor |
|---|
| R8,R66 | 56Ω | Resistor, small symbol |
|---|
| R9 | 22Ω | Resistor, small symbol |
|---|
| R12,RN2 | 4.7K | 5 resistor network, star topology, bussed resistors, split,7 resistor network, star topology, bussed resistors, split |
|---|
| R44,R45 | 3.9KΩ | Resistor, small symbol |
|---|
| R49 | 6.49kΩ | Resistor, 1/4W, ±1% |
|---|
| R50,R72 | 1.1kΩ | Resistor, 1/4W, ±5% |
|---|
| R51 | 20kΩ | Resistor, small symbol |
|---|
| R52 | 200kΩ | Resistor, 1/4W, ±5% |
|---|
| R68,RN1,RN4 | 4.7KΩ | 5 resistor network, star topology, bussed resistors, split,7 resistor network, star topology, bussed resistors, split,Resistor, small symbol |
|---|
| R69,R78,RN11 | 4.7kΩ | 9 resistor network, star topology, bussed resistors, split,Resistor, 1/4W, ±5%,Resistor, small symbol |
|---|
| R70,R71 | 2.4kΩ | Resistor, small symbol |
|---|
| R73,R74,R74B1 | R_Small | Resistor, small symbol |
|---|
| R80,R81 | 6.21 kΩ | Resistor, small symbol |
|---|
| RN5-RN7 | 180Ω | 8 resistor network, parallel topology,8 resistor network, parallel topology, split |
|---|
| RN10 | 2.2kΩ | 4 resistor network, parallel topology, SIP package, split |
|---|
| RN13 | R_Network05_Split | 5 resistor network, star topology, bussed resistors, split |
|---|
| RN14 | 330Ω | 8 resistor network, parallel topology, split |
|---|
| RN15 | R_Pack07 | 7 resistor network, parallel topology |
|---|
| RN16,RN18,RN21,RN22 | 2.2K | 7 resistor network, star topology, bussed resistors, split |
|---|
| RN17,RN19,RN20 | 2.2KΩ | 7 resistor network, star topology, bussed resistors, small symbol,7 resistor network, star topology, bussed resistors, split,9 resistor network, star topology, bussed resistors, split |
|---|
| SP0 | ROM_SIZE | Generic connector, single row, 01x02, script generated (kicad-library-utils/schlib/autogen/connector/) |
|---|
| SP1 | P26_SELECT | Generic connector, single row, 01x03, script generated (kicad-library-utils/schlib/autogen/connector/) |
|---|
| SP2 | Z80_INT | Generic connector, single row, 01x03, script generated (kicad-library-utils/schlib/autogen/connector/) |
|---|
| TP1 | TestPoint | test point |
|---|
| X1 | 14.7456MHz | Two pin crystal |
|---|
| X2 | 14.31818MHz | Two pin crystal |
|---|