Dragon Pal with External Character Rom for Rev 3.1
Extrom is an open-source printed circuit board by jimbro1000, from the jimbro1000/DragonPalExtRom repository on GitHub, published under the MIT licence. It is a 4-layer board of 120.2 × 104.1 mm with 78 parts on 208 nets, routed with 1,683 tracks and 327 vias.
It is built around the 74HCT245, 74HCT257D and 74HCT393D, with the 74HC273D, 74HCT00D and 74HCT02D among its other parts. Its parts include 26 ICs, 23 capacitors, 21 resistors, 3 connectors and 1 crystal.
| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 100uF | Capacitor_Tantalum_SMD:CP_EIA-3528-21_Kemet-B_Pad1.50x2.35mm_HandSolder | C19, C20, C21, C22, C23 |
| 4 | 74HCT257 | Package_SO:SOIC-16_3.9x9.9mm_P1.27mm | IC18, IC19, IC20, IC21 |
| 4 | 74HCT393 | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | IC5, IC7, IC15, IC16 |
| 3 | 1K | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R3, R5, R12 |
| 3 | 2K7 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R13, R14, R17 |
| 2 | 0.01uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C12, C15 |
| 2 | 100uF | Capacitor_SMD:CP_Elec_6.3x5.8 | C1, C18 |
| 2 | 10K | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R9, R10 |
| 2 | 180pF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C3, C7 |
| 2 | 22pF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C14, C17 |
| 2 | 270R | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R20, R21 |
| 2 | 2N2369 | Package_TO_SOT_THT:TO-92_Inline_Wide | TR1, TR2 |
| 2 | 33pF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C5, C9 |
| 2 | 5K6 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R4, R16 |
| 1 | 0.1uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C6 |
| 1 | 100pF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C4 |
| 1 | 10K | Potentiometer_THT:Potentiometer_Bourns_3386X_Horizontal | RV1 |
| 1 | 10R | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R19 |
| 1 | 12K | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R6 |
| 1 | 1K2 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R15 |
| 1 | 1K8 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R8 |
| 1 | 1uF | Capacitor_SMD:CP_Elec_4x5.4 | C16 |
| 1 | 2-22pF | Dragon:Trimmer-7.5mm | C8 |
| 1 | 22K | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R11 |
| 1 | 2318 | Package_DIP:DIP-8_W7.62mm | IC13 |
| 1 | 27K | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1 |
| 1 | 330R | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R18 |
| 1 | 330pF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C2 |
| 1 | 3K3 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R2 |
| 1 | 4.433619MHz | Crystal:Crystal_HC49-U_Horizontal_1EP_style2 | Y1 |
| 1 | 4.7pF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C13 |
| 1 | 4.7uF | Capacitor_SMD:CP_Elec_5x5.8 | C10 |
| 1 | 47uF | Capacitor_SMD:CP_Elec_5x5.8 | C11 |
| 1 | 74ALS74N | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | IC6 |
| 1 | 74HC273 | Package_SO:SO-20_5.3x12.6mm_P1.27mm | IC2 |
| 1 | 74HCT00 | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | IC1 |
| 1 | 74HCT02 | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | IC24 |
| 1 | 74HCT04 | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | IC17 |
| 1 | 74HCT08 | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | IC22 |
| 1 | 74HCT1G32 | Package_TO_SOT_SMD:SOT-353_SC-70-5_Handsoldering | IC25 |
| 1 | 74HCT20 | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | IC3 |
| 1 | 74HCT245 | Package_SO:SO-20_5.3x12.6mm_P1.27mm | IC23 |
| 1 | 74HCT32 | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | IC10 |
| 1 | 74HCT390 | Package_SO:SOIC-16_3.9x9.9mm_P1.27mm | IC9 |
| 1 | 74HCT86 | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | IC4 |
| 1 | 74LS123N | Package_SO:SOIC-16_3.9x9.9mm_P1.27mm | IC11 |
| 1 | 8K2 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R7 |
| 1 | BC212 | Package_TO_SOT_THT:TO-92_Inline_Wide | TR3 |
| 1 | Board Interconnect male | Connector_PinHeader_2.54mm:PinHeader_2x11_P2.54mm_Vertical | J1 |
| 1 | CD4053 | Package_SO:SOIC-16_3.9x9.9mm_P1.27mm | IC14 |
| 1 | Conn_02x08_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x08_P2.54mm_Vertical | J3 |
| 1 | HM62256BLP | Package_DIP:DIP-28_W7.62mm | IC26 |
| 1 | LM1889N | Package_DIP:DIP-18_W7.62mm | IC12 |
| 1 | MC6847 | Package_DIP:DIP-40_W15.24mm | IC8 |
| 1 | Video Output male | Connector_PinHeader_2.54mm:PinHeader_1x05_P2.54mm_Vertical | J2 |
ksr/p8x
Generated by generators/genkicad.py from the canonical geneagle netlist (CARDS["peripheral-card"]), same standard as the memory card: 4-layer (F/B signals, In1=GND, In2=VCC planes), a bypass cap above each IC, a…
Builder68/OpenEarlyMacsRAMexpansion
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tebl/RC6502-Apple-1-Replica
An expandable SBC-version of the Apple 1 computer, easy to get started with and lot of cool stuff that can be added to it!
It measures 120.2 × 104.1 mm and has 4 copper layers, 1.6 mm thick.
78 parts, built around the 74HCT245, 74HCT257D, 74HCT393D and 74HC273D. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
From the jimbro1000/DragonPalExtRom repository on GitHub, at the commit this page was made from: the board is extrom.kicad_pcb and its schematic extrom.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
