FennecRAMadapt
About the FennecRAMadapt PCB
FennecRAMadapt is an open source PCB design by ChartreuseK, published on GitHub under the BSD-3-Clause license. It is a 2-layer board measuring 85.1 × 38.5 mm, with 16 components from 13 distinct parts.
Other key parts include the 74LS08, 74LS02 and 62256. By type, the board carries 5 connectors, 3 ICs, 3 capacitors, 2 jumpers and 2 resistors.
From the project
Fennec 6800 Homebrew Single Board Computer
This adapter allows the use of common 62256 32k x 8-bit SRAM chips with the Fennec 6800, replacing the vintage 2114 SRAM chips. The adapter plugs into the top two SRAM sockets as well as the 74LS138 socket (replacing the IC) and provides a full 8kB of SRAM to the Fennec. Optionally wires may be soldered down to the main board to grab A13 and A14 and soldered to the ram adapter. This modification would allow for the maximum of 32kB of RAM to be fitted to the system, more than normally possbile.
Main components on the FennecRAMadapt
FennecRAMadapt bill of materials (BOM)
16 components, 13 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 74LS08 | DIP-14 Copper Ref Pin 1 Mark | U1 |
| 1 | 74LS02 | DIP-14 Copper Ref Pin 1 Mark | U2 |
| 1 | 62256 | DIP-28 Copper Ref Pin 1 | U3 |
| 1 | 74LS138 Socket | DIP-16 Copper Ref Pin 1 Mark | J1 |
| 1 | Extra Address Wiring | PinHeader_1x02_P2.54mm_Vertical | J2 |
| 1 | 2114 Left | DIP-18 Copper Ref Pin 1 Mark | J3 |
| 1 | 2114 Right | DIP-18 Copper Ref Pin 1 Mark | J4 |
| 1 | Mounting Support DNC | PinHeader_1x09_P2.54mm_Vertical | P1 |
| 1 | A14 Conn | PinHeader_1x03_P2.54mm_Vertical | JP1 |
| 1 | A13 Conn | PinHeader_1x03_P2.54mm_Vertical | JP2 |
| 1 | Limit 8k | PinHeader_1x02_P2.54mm_Vertical | LIM8K |
| 3 | 0.1u | C_Disc_D3.0mm_W1.6mm_P2.50mm | C1, C2, C3 |
| 2 | 1k | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1, R2 |
FennecRAMadapt design files
The KiCad project lives in the ChartreuseK/Fennec6800 repository on GitHub; these links point at the commit this page was built from.
FennecRAMadapt: common questions
How big is the FennecRAMadapt PCB?
The FennecRAMadapt measures 85.1 × 38.5 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the FennecRAMadapt?
16 components, from 13 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the FennecRAMadapt design files?
From the ChartreuseK/Fennec6800 repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the FennecRAMadapt design in my own project?
Yes, under the terms of its BSD-3-Clause license, which ChartreuseK chose for the repository.
