Gd 6502 proto
About the Gd 6502 proto PCB
Gd 6502 proto is an open source PCB design by baldengineer, published on GitHub under the MIT license. It is a 4-layer board measuring 90.4 × 52.2 mm, with 34 components from 23 distinct parts.
Other key parts include the 27C512, w65c02s-QFP, 74HCT02 and 74HCT245. By type, the board carries 12 connectors, 8 resistors, 7 capacitors, 5 ICs and 1 diode.
It belongs with the retro computing designs in this gallery.
From the project
Using the Mega II from a IIgs to make a Apple IIe compatible computer: The Mega IIe!
Main components on the Gd 6502 proto
Gd 6502 proto bill of materials (BOM)
34 components, 23 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 27C512 | DIP-28_W15.24mm_Socket_LongPads | U1 |
| 1 | w65c02s-QFP | PQFP-44_10x10mm_P0.8mm | U2 |
| 1 | 74HCT02 | SOIC-14_3.9x8.7mm_P1.27mm | U3 |
| 2 | 74HCT245 | SOIC-20W_7.5x12.8mm_P1.27mm | U4, U5 |
| 1 | POWER | PinHeader_2x02_P2.54mm_Vertical | J1 |
| 2 | ADDR_BUS | PinHeader_1x11_P2.54mm_Vertical | J2, J11 |
| 1 | Main Data | PinHeader_1x11_P2.54mm_Vertical | J3 |
| 1 | Bus Signals | PinHeader_1x11_P2.54mm_Vertical | J4 |
| 1 | Address | PinHeader_2x10_P2.54mm_Vertical | J5 |
| 1 | Data | PinHeader_2x05_P2.54mm_Vertical | J6 |
| 1 | ROMDIR_SEL | PinHeader_1x03_P2.54mm_Vertical | J7 |
| 1 | ROMG_SEL | PinHeader_1x03_P2.54mm_Vertical | J8 |
| 1 | CLK_ALT | PinHeader_1x02_P2.54mm_Vertical | J9 |
| 1 | NOR-Extra | PinHeader_1x07_P2.54mm_Vertical | J10 |
| 1 | ROMEN | PinHeader_1x02_P2.54mm_Vertical | J12 |
| 1 | 3k3 | R_0805_2012Metric | RNP1 |
| 1 | PWR | D_1206_3216Metric | D1 |
| 5 | 1u | C_0805_2012Metric | C1, C4, C5, C6, C7 |
| 1 | 10uF | C_Radial_D6.3mm_H5.0mm_P2.50mm | C2 |
| 1 | 10uF | C_0805_2012Metric | C3 |
Show 3 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 3 | 3k3 | R_0805_2012Metric | R1, R2, R3 |
| 1 | 1K | R_0805_2012Metric | R4 |
| 4 | 0 | R_Array_Convex_4x0612 | RN1, RN2, RN3, RN4 |
Gd 6502 proto design files
The KiCad project lives in the baldengineer/Mega-IIe repository on GitHub; these links point at the commit this page was built from.
Gd 6502 proto: common questions
How big is the Gd 6502 proto PCB?
The Gd 6502 proto measures 90.4 × 52.2 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the Gd 6502 proto?
34 components, from 23 distinct parts. The full bill of materials is listed on this page.
Where can I download the Gd 6502 proto design files?
From the baldengineer/Mega-IIe repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Gd 6502 proto design in my own project?
Yes, under the terms of its MIT license, which baldengineer chose for the repository.
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