COMET
tomstorey
A highly integrated, small form factor Motorola 68000 based computer featuring "COM" ports and an "ET"hernet controller, and associated bits and pieces
Components (51)
| Reference | Value | Description |
|---|---|---|
| U1 | 74FCT16245 | Dual octal bus transceiver; 3-state |
| U2,U3 | 74FCT162244 | Quad 4-bit buffer, balanced outputs |
| U4,U23 | SN74AHCT1G32DBV | Single 2-input OR gate |
| U5 | EPF81188AQC208-3 | |
| U6,U7,U9,U10 | SN74LVC1G06DBV | Inverter with open-drain output |
| U8 | SN74AHCT1G125DBV | Bus buffer/line driver; 3-state |
| U11-U13 | SN74CBT16212CDLR | 24-bit FET bus exchange switch |
| U14,U15 | IS61C6416AL-12TLI | |
| U16 | IS62C256AL-45TLI | |
| U17-U19 | CY74FCT245TQCT | Octal bus transceiver; 3-state |
| U20 | M29F400FB55N3F2 | |
| U21 | PCF8584T | I2C bus controller, 68000 bus oriented symbol |
| U22 | VT82C42 | Keyboard and mouse controller, PS/2 optimised layout |
| U24,U25 | SN75452B | |
| U26 | M95M04-DRDW6 | |
| U27 | PIC18F15Q40-I/SS | Configuration PROM emulator |
| U28 | IMSG171-35 | |
| U29 | LM334M/NOPB | 3-Terminal Adjustable Current Source |
| C1-C6,C12-C55,C59,C61,C62 | 100nF | |
| C7,C8 | 100uF | |
| C9-C11,C56 | 47uF | |
| C57,C58 | 100pF | |
| C60 | 22uF | |
| D1,D2,D5 | GREEN | |
| D3 | RED | |
| D4 | 1N4148W | Diode |
| D6-D8 | BAV99 | Dual diode, anode/cathode/center |
| F1 | 1210L200PR | Resettable fuse, polymeric positive temperature coefficient |
| J1 | DIN41612_03x32_ABC_COMETbus | DIN41612 3x32 male connector with COMETbus signals |
| J2 | Conn_01x06_Pin | Generic connector, single row, 01x06, script generated |
| J3 | Conn_01x05_Socket | Generic connector, single row, 01x05, script generated |
| J4 | DE15_Receptacle_HighDensity_MountingHoles | 15-pin female receptacle socket D-SUB connector, High density (3 columns), Triple Row, Generic, VGA-connector, Mounting Hole |
| J5,J6 | Mini-DIN-6 | 6-pin Mini-DIN connector |
| JP1,JP3 | Jumper_2_Open | Jumper, 2-pole, open |
| L1 | ? | Inductor |
| R1,R2,R11,R15,R17,R19-R28,R33-R35,R44,R45,R52,R55,R60,R61,R63,R64,R66,RN2-RN6,RN10-RN13 | 10K | 4 resistor network, parallel topology |
| R3,R4,R9,R36,R49-R51,R53,R54,R56-R59 | 1K5 | |
| R5-R8,R48 | 1K | |
| R10,R12-R14,R16,R18,R29-R32,R40,R43,R62,R67,R68 | 0R | |
| R37-R39 | 75R | |
| R41 | 15R | |
| R42 | 150R | |
| R46,R47 | 33R | |
| R65 | 470R | |
| RN1 | 4K7 | |
| RN7-RN9 | 560R | 4 resistor network, parallel topology |
| SW1 | SW_DIP_x06 | 6x DIP Switch, Single Pole Single Throw (SPST) switch, small symbol |
| TP1-TP6 | TestPoint | test point |
| Y1 | 40MHz | Crystal Clock Oscillator, SMD 7.0x5.0mm |
| Y2 | 28.322MHz | Crystal Clock Oscillator, combo DIP-8/14-style metal package |
| Y3 | 25.175MHz | Crystal Clock Oscillator, combo DIP-8/14-style metal package |