QuadraFPGA
About the QuadraFPGA PCB
QuadraFPGA is an open source PCB design by MelkhiorVintageComputing, published on GitHub under the CC-BY-NC-4.0 license. It is a 4-layer board measuring 100 × 100 mm, with 32 components from 18 distinct parts.
Other key parts include the 74CB3T16211DGGR, TPD12S016PWR and 8807-140-170LH. By type, the board carries 16 capacitors, 6 ICs, 4 resistors, 3 connectors and 1 diode.
From the project
The goal of this repository is to be able to interface a modern (2023 era) FPGA with a Macintosh Quadra using its PDS (Processor Direct Slot) connector. The PDS is basically just a physical connector to the MC68040 memory bus.
The goal of this repository is to be able to interface a modern (2023 era) FPGA with a Macintosh Quadra using its PDS (Processor Direct Slot) connector. The PDS is basically just a physical connector to the MC68040 memory bus.
So unless you're a retrocomputing enthusiast with such a machine, this is useless. If you are such an enthusiast, then maybe the ability to connect a modern LCD monitor using a digital interface to an old Macintosh might be of interest to you.
Main components on the QuadraFPGA
QuadraFPGA bill of materials (BOM)
32 components, 18 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 4 | 74CB3T16211DGGR | SOP50P810X120-56N | IC1, IC2, IC3, IC4 |
| 1 | TPD12S016PWR | SOP65P640X120-24N | U1 |
| 1 | 8807-140-170LH | 8807-140-170LH | U14 |
| 1 | Conn_02x07_Odd_Even | PinHeader_2x07_P2.00mm_Horizontal_For_SeeedStudio | J1 |
| 1 | 10029449-111RLF (HDMI A) | HDMI_A_Amphenol_10029449-111 | J2 |
| 1 | A2541HWR-2x6P (Pmod 2x6 F R) | PinSocket_2x06_P2.54mm_Horizontal | J3 |
| 1 | ZTEX_AB-ztex_AB | PinHeader_2x32_P2.54mm_Vertical_For_SeeedStudio | JAB1 |
| 1 | ZTEX_CD-ztex_CD | PinHeader_2x32_P2.54mm_Vertical_For_SeeedStudio | JCD1 |
| 1 | RED LED 0603 | LED_0603_1608Metric | D1 |
| 11 | 100nF | C_0402_1005Metric | C1, C2, C3, C4, C5, C6, C8, C11 +3 |
| 2 | 47uF 10V+ | C_1206_3216Metric | C7, C16 |
| 1 | 10nF | C_0402_1005Metric | C9 |
| 1 | 47uF 10V 1206 | C_1206_3216Metric | C10 |
| 1 | 10nF 1kV 0805 | C_0805_2012Metric | C14 |
| 1 | 0 | R_0402_1005Metric | R1 |
| 1 | 680 | R_0402_1005Metric | R2 |
| 1 | 1M 500V 1206 | R_1206_3216Metric | R3 |
| 1 | 10k | R_0402_1005Metric | R4 |
QuadraFPGA design files
The KiCad project lives in the MelkhiorVintageComputing/QuadraFPGA repository on GitHub; these links point at the commit this page was built from.
QuadraFPGA: common questions
How big is the QuadraFPGA PCB?
The QuadraFPGA measures 100 × 100 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the QuadraFPGA?
32 components, from 18 distinct parts. The full bill of materials is listed on this page.
Where can I download the QuadraFPGA design files?
From the MelkhiorVintageComputing/QuadraFPGA repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the QuadraFPGA design in my own project?
It is published under CC-BY-NC-4.0, which limits how it may be reused; read the license before building on it.