6502fastbb
About the 6502fastbb PCB
6502fastbb is an open source PCB design by gfoot, published on GitHub under the Unlicense license. It is a 2-layer board measuring 195.6 × 165.1 mm, with 30 components from 27 distinct parts.
Other key parts include the WD65C02, 71256, I/O PLD, 74AHCT139 and 74HC74. By type, the board carries 15 ICs, 7 resistors, 2 crystals, 1 connector, 1 fuse and 1 switch.
It belongs with the retro computing designs in this gallery.
From the project
Fast PDIP-only 6502-based homebrew computer - code and hardware design sources
This project was used to define a slightly modified circuit for implementation on solderless breadboards, and to plan the layout of the components. It combines the CPU and I/O modules, but has some parts removed which are only relevant to the PCB version such as I/O expansion sockets.
The PCB layout editor shows the positioning of the components on the breadboard, but not the connections between them.
Main components on the 6502fastbb
6502fastbb bill of materials (BOM)
30 components, 27 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | WD65C02 | DIP-40_W15.24mm_Socket | U1 |
| 1 | 71256 | DIP-28_W7.62mm | U2 |
| 1 | I/O PLD | DIP-20_W7.62mm_Socket | U3 |
| 1 | 74AHCT139 | DIP-16_W7.62mm | U4 |
| 1 | 74HC74 | DIP-14_W7.62mm | U5 |
| 3 | 74HC245 | DIP-20_W7.62mm | U6, U7, U8 |
| 1 | 28C256 | DIP-28_W15.24mm_Socket | U9 |
| 1 | 74HCT138 | DIP-16_W7.62mm | U12 |
| 1 | 74AHCT245 | DIP-20_W7.62mm | U13 |
| 1 | 74HCT273 | DIP-20_W7.62mm | U14 |
| 1 | 74HC14 | DIP-14_W7.62mm | U15 |
| 1 | 74AHCT74 | DIP-14_W7.62mm | U16 |
| 1 | 74LS32 | DIP-14_W7.62mm | U18 |
| 1 | CXO_DIP8 | Oscillator_DIP-8 | X1 |
| 1 | 4MHz | Oscillator_DIP-8 | X2 |
| 1 | Barrel_Jack | BarrelJack_Horizontal | J1 |
| 1 | HDSP-4850_2 | HDSP-4850 | BAR1 |
| 1 | Fuse | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | F1 |
| 1 | SW_Push | SW_PUSH_6mm_H4.3mm | SW1 |
| 1 | 1N4001 | D_DO-41_SOD81_P10.16mm_Horizontal | D1 |
Show 7 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 10u | CP_Radial_D5.0mm_P2.00mm | C10 |
| 1 | 3k3 | R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R1 |
| 1 | 1k | R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R2 |
| 1 | 22k | R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R3 |
| 2 | 330 | R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R5, R6 |
| 1 | 3k3 | DIP-16_W7.62mm | RN1 |
| 1 | 10k | R_Array_SIP9 | RN2 |
6502fastbb design files
The KiCad project lives in the gfoot/fastpdip6502 repository on GitHub; these links point at the commit this page was built from.
6502fastbb: common questions
How big is the 6502fastbb PCB?
The 6502fastbb measures 195.6 × 165.1 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the 6502fastbb?
30 components, from 27 distinct parts. The full bill of materials is listed on this page.
Where can I download the 6502fastbb design files?
From the gfoot/fastpdip6502 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the 6502fastbb design in my own project?
Yes, under the terms of its Unlicense license, which gfoot chose for the repository.
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