Mcd
About the Mcd PCB
Mcd is an open source PCB design by jack-mil, published on GitHub. It is a 2-layer board measuring 148 × 70.8 mm, with 69 components from 24 distinct parts.
Other key parts include the MAX699, XC9572, MC68000FN, MAX232 and XR68C681. By type, the board carries 20 resistors, 19 capacitors, 9 ICs, 9 diodes, 3 connectors and 3 switches.
From the project
KiCAD project files for M68000 based single-board computer design project
Also included in vhdl/ is the code for control logic in the CPLD
v1.0.0 goes with the monitor software developed in the mcd-asm repository.
Main components on the Mcd
Mcd bill of materials (BOM)
69 components, 24 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | MAX699 | DIP-8_W7.62mm_LongPads | U1 |
| 1 | XC9572 | PLCC-84_THT-Socket | U2 |
| 1 | MC68000FN | PLCC-68_THT-Socket | U3 |
| 1 | MAX232 | DIP-16_W7.62mm_Socket | U4 |
| 1 | XR68C681 | PLCC-44_THT-Socket | U5 |
| 2 | AS6C62256 | DIP-28_W15.24mm_Socket_LongPads | U6, U7 |
| 2 | AT28C256 | PLCC-32_THT-Socket | U8, U9 |
| 1 | ECS-2200B-080 | Oscillator_DIP-8_LargePads | X1 |
| 1 | ECS-2100AX-036 | Oscillator_DIP-8_LargePads | X2 |
| 1 | JTAG1 | JTAG PinHeader_1x06_P2.54mm_Vertical | J1 |
| 1 | USB_B | USB_Micro-B_CS5A-NF | J2 |
| 1 | 2nd DUART CHNL | PinHeader_1x03_P2.54mm_Vertical | J4 |
| 1 | Power Jumper | PinHeader_1x02_P2.54mm_Vertical | JP1 |
| 1 | Util_SW | SW_DIP_SPSTx04_Slide_6.7x11.72mm_W8.61mm_P2.54mm_LowProfile | SW1 |
| 1 | RESET_SW | SW_PUSH_6mm | SW2 |
| 1 | STEP_SW | SW_PUSH_6mm | SW3 |
| 3 | Red | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | FC0, FC1, FC2 |
| 4 | Green | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D0, D1, D2, D3 |
| 4 | Blue | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D4, D5, D6, D7 |
| 1 | PWR_LED | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D12 |
Show 4 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 18 | 1uF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C2, C3, C4, C5, C6, C7, C9 +10 |
| 1 | 100uF | C_1210_3225Metric_Pad1.33x2.70mm_HandSolder | C8 |
| 8 | 4.7k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R2, R3, R5, R16, R17, R18, R19 |
| 12 | 330 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R4, R6, R7, R8, R9, R10, R11, R12 +4 |
Mcd design files
The KiCad project lives in the jack-mil/mcd-pcb repository on GitHub; these links point at the commit this page was built from.
- LayoutM68000.kicad_pcb
- SchematicM68000.kicad_sch
Mcd: common questions
How big is the Mcd PCB?
The Mcd measures 148 × 70.8 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Mcd?
69 components, from 24 distinct parts. The full bill of materials is listed on this page.
Where can I download the Mcd design files?
From the jack-mil/mcd-pcb repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Mcd design in my own project?
The repository has no license, so all rights stay with jack-mil. Use it as a reference, and ask the author before reusing the design.