============================ CARTRIDGE BOARD PARTS LIST ============================ Part Value Close part # Description/important features ------------------------------------------------------------------------------------------- C1 22pF C315C220F3G5TA Ceramic capacitor, 1%, 2.54mm lead spacing C2 33pf C315C330F3G5TA Ceramic capacitor, 1%, 2.54mm lead spacing C3 100nF FG18C0G1H103JNT06 MLCC capacitor, 2.54mm lead spacing C4 33pf C315C330F3G5TA Ceramic capacitor, 1%, 2.54mm lead spacing C5 100nF FG18C0G1H103JNT06 MLCC capacitor, 2.54mm lead spacing C6 100nF FG18C0G1H103JNT06 MLCC capacitor, 2.54mm lead spacing C7 10pF C316C100F3G5TA Ceramic capacitor, 1%, 2.54mm lead spacing D1 1N715 TZX11B-TR Zener diode FB1 2743002112 4211R-11 Through-hole ferrite Bead, 8mm length, 135 ohm IC1 CD74HCT7046A CD74HCT7046AEE4 Phase-Locked Loop with VCO and Lock Detector IC2 AD8031N AD8031ANZ Op-amp IC3 74LS74N SN74HCT74NE4 Dual D type positive edge triggered FLIP FLOP, preset and clear IC4 MAX913CPA MAX913CPA+ Voltage comparator JP1 2x22 70246-4402 2x22 shrouded, keyed male pin header R1 10k MFR-25FRF52-10K Resistor, 1/4W, 1%, 6.3mm length R2 10k MFR-25FRF52-10K Resistor, 1/4W, 1%, 6.3mm length R3 10k MFR-25FRF52-10K Resistor, 1/4W, 1%, 6.3mm length R5 33 MFR-25FRF52-33R Resistor, 1/4W, 1%, 6.3mm length R6 10k MFR-25FRF52-10K Resistor, 1/4W, 1%, 6.3mm length R7 47k MFR-25FBF52-47K Resistor, 1/4W, 1%, 6.3mm length R8 10k MFR-25FRF52-10K Resistor, 1/4W, 1%, 6.3mm length R9 22k MFR-25FTF52-22K Resistor, 1/4W, 1%, 6.3mm length R10 10k MFR-25FRF52-10K Resistor, 1/4W, 1%, 6.3mm length R11 5.6k MFR-25FTE52-5K6 Resistor, 1/4W, 1%, 6.3mm length CABLE 2x22 IDC IDSD-22-D-03.00-T 2x22 IDC ribbon cable connecting the two boards Cartridge board notes ------------------------- 1. My IDC ribbon cable is 3" long and keyed. A 2" cable would probably be ideal but it wasn't available. Bear in mind that a keyed cable requires keyed receptacles. 2. The cartridge board serves a very important function: it quadruples the rate of the Intellivision's MCLK signal while keeping the result phase-locked. It passes the result along to the mainboard via pin 16. The incoming MCLK signal from the Intellivision is highly attenuated, and it's important to use parts that are in spec for this board to do its job. Recommend that all passives have a 1% tolerance. 3. While it might be tempting to use sockets for the IC's, if they are socketed then a plastic shroud will likely not fit around the board. 4. The 100nF capacitors are exactly the same as the ones on the mainboard. Their sole use is noise filtering. 5. The ferrite bead is the same as the ones on the mainboard. See the mainboard notes for more info on the ferrite beads. 6. All capacitors should have 0.1" (2.54mm) lead spacing. 7. The rating of the zener diode is not critical. I used a 1N715 which is rated for 11V. The point of the diode is only to cut down on ringing. ============================ MAINBOARD PARTS LIST ============================ Part Value Close part # Description/important features ------------------------------------------------------------------------------------------- C1..C31 100nF FG18C0G1H103JNT06 MLCC capacitor, 2.54mm lead spacing (total qty. 30: there is no C20) CN1 151-7620E-E DC barrel jack, 2mm I.D., 6.3mm O.D. FB1 2743002112 4211R-11 Through-hole ferrite Bead, 8mm length, 135 ohm FB2 2743002112 4211R-11 Through-hole ferrite Bead, 8mm length, 135 ohm SOCKET Preci-Dip 540-88-032-24-008 PLCC-32 socket for 1k FIFO IC1 7202J 7202LA50JG 1k x 9 Asynchronous FIFO, 5V IC2 74LS04N SN74HCT04NE4 Hex INVERTER IC3 74AS574N SN74HCT574NE4 8-bit D type FLIP FLOP bus driver IC4 74AS574N SN74HCT574NE4 8-bit D type FLIP FLOP bus driver IC5 74LS245N SN74HCT245NE4 Octal BUS TRANSCEIVER, 3-state IC6 74LS245N SN74HCT245NE4 Octal BUS TRANSCEIVER, 3-state IC7 74LS08N SN74LS08NE4 Quad 2-input AND gate, 5V IC8 74LS245N SN74HCT245NE4 Octal BUS TRANSCEIVER, 3-state IC9 CD74HC40103 CD74HC40103EE4 High-Speed CMOS Logic 8-Stage Synchronous Down Counter IC10 74LS08N SN74LS08NE4 Quad 2-input AND gate, 5V IC11 74LS08N SN74LS08NE4 Quad 2-input AND gate, 5V IC12 CD74HC40103 CD74HC40103EE4 High-Speed CMOS Logic 8-Stage Synchronous Down Counter IC13 CD74HC40103 CD74HC40103EE4 High-Speed CMOS Logic 8-Stage Synchronous Down Counter IC14 CD74HC40103 CD74HC40103EE4 High-Speed CMOS Logic 8-Stage Synchronous Down Counter IC15 74ALS73AN SN74LS73AN Dual J-K FLIP FLOP, clear IC16 74LS04N SN74HCT04NE4 Hex INVERTER IC17 74AS574N SN74HCT574NE4 8-bit D type FLIP FLOP bus driver IC18 74ALS73AN SN74LS73AN Dual J-K FLIP FLOP, clear IC19 CD74HCT4520N CD4520BEE4 Dual syncronous binary UP-COUNTER IC20 74LS245N SN74HCT245NE4 Octal BUS TRANSCEIVER, 3-state IC21 74LS04N SN74HCT04NE4 Hex INVERTER IC22 74LS08N SN74LS08NE4 Quad 2-input AND gate, 5V IC23 74LS08N SN74LS08NE4 Quad 2-input AND gate, 5V IC24 74ALS73AN SN74LS73AN Dual J-K FLIP FLOP, clear IC25 74AS574N SN74HCT574NE4 8-bit D type FLIP FLOP bus driver IC26 74LVC245N SN74LVC245ANE4 LOW-VOLTAGE Octal BUS TRANSCEIVER, 3-state IC27 74LVC245N SN74LVC245ANE4 LOW-VOLTAGE Octal BUS TRANSCEIVER, 3-state IC28 74LVC245N SN74LVC245ANE4 LOW-VOLTAGE Octal BUS TRANSCEIVER, 3-state IC29 74LVC245N SN74LVC245ANE4 LOW-VOLTAGE Octal BUS TRANSCEIVER, 3-state IC30 74AS574N SN74HCT574NE4 8-bit D type FLIP FLOP bus driver IC31 74LS00N SN74HCT00N Quad 2-input NAND gate JP1 1x20 929850-01-20-RB 1x20 female pin header JP2 1x20 929850-01-20-RB 1x20 female pin header JP3 2x6 929852-01-06-RA 2x6 female pin header JP4 2x22 70246-4402 2x22 shrouded, keyed male pin header JP5/JP6 2x22 392-044-558-201 Cartridge edge connector JP7 1x2 171856-0102 1X02 male pin header (for optional power LED) PB1 PUSHBUTTON_6MM SKHLABA010 Small 2-contact pushbutton (Adafruit sells them in packets of 20) PWRSUPP SKM10E-05 SKM10E-05 MEAN WELL 5V 2A DC-DC Power Converter Q1 IRF4905 IRF4905PBF TO220BH P-Channel HEXFET® Power MOSFET R1 1M MFR-25FTE52-1M Resistor, 1/4W, 1%, 6.3mm length R2 40k MFR-12FTF52-40K Resistor, 1/6W, 1%, 6.3mm length R3 20k MFR-25FBF52-20K Resistor, 1/4W, 1%, 6.3mm length R4 10k MFR-25FRF52-10K Resistor, 1/4W, 1%, 6.3mm length R5 5k MFR-25FTE52-4K99 Resistor, 1/4W, 1%, 6.3mm length R6 2.5k MFR-25FBF52-2K49 Resistor, 1/4W, 1%, 6.3mm length R7 1.25k MFR-25FBF52-1K24 Resistor, 1/4W, 1%, 6.3mm length R8 625 MFR-25FRF52-620R Resistor, 1/4W, 1%, 6.3mm length R9 312 MFR-25FRF52-309R Resistor, 1/4W, 1%, 6.3mm length R10 3.9k MFR-25FBF52-3K9 Resistor, 1/4W, 1%, 6.3mm length R11 1k MFR-25FRE52-1K Resistor, 1/4W, 1%, 6.3mm length R12 470 MFR-25FTE52-470R Resistor, 1/4W, 1%, 6.3mm length R13 820 MFR-25FBF52-820R Resistor, 1/4W, 1%, 6.3mm length R14 820 MFR-25FBF52-820R Resistor, 1/4W, 1%, 6.3mm length R15 1k MFR-25FRE52-1K Resistor, 1/4W, 1%, 6.3mm length R16 1k MFR-25FRE52-1K Resistor, 1/4W, 1%, 6.3mm length R17 1k MFR-25FRE52-1K Resistor, 1/4W, 1%, 6.3mm length X1 DSUB25-F 09663526611 Female D-Sub-25 right-angle parallel port connector Mainboard notes ------------------------- 1. For resistors, any 1/4W 1% tolerance resistor that's 6.3mm or less will do. It's okay to use a 1/6W resistor for the 40k one as it's only in the resistor ladder for the output video. 2. For the 1M resistor, the board will accommodate a larger 1/2W one but it isn't necessary. 3. All capacitors are the same, 100nF, with 0.1" (2.54mm) lead spacing. 4. For chips, generally speaking, try to remain compatible with TTL logic levels if possible. 5. It is ***CRITICAL*** to use LVC (low-voltage) variants for IC26-IC29. They translate 5V logic levels to 3.3V for the Raspberry Pi Pico. Not using LVC chips absolutely WILL fry either the Pico or IC26-IC29. 6. The MEAN WELL switching power supply has an upper limit of 9 volts input. Recommended DC power supply is 6V 2A. The barrel jack from the wall-wart power supply must be center-positive. 7. The hardest part to acquire by far is the cartridge connector. 8. PB1 is a reset button for the Raspberry Pi Pico. It isn't strictly necessary. 9. JP7 is a locking header for an optional power LED. 10. JP3 is a header for possible expansion. It provides the digital video levels just before they are converted to analog. A potential use is conversion to DVI/HDMI. 11. The ferrite beads I have are Fair-Rite 2743002112 through-hole axial beads, with an approximate length of 8mm and 135-ohm impedance. The impedance value was not specifically chosen, it's just what looked okay and they do a good (and important) job of removing noise from the power rails. Try to use something similar in size and impedance. 12. Recommend using sockets for all chips. It's cheap insurance. 13. You also need a Raspberry Pi Pico and headers for it, of course. It plugs into JP1 and JP2. DO NOT use its castellated holes to solder it directly to the mainboard or (a) its ability to cool itself will suffer, (b) you won't be able to plug your USB cable into it to load the software, and (c) it will probably short against the vias under it.