M68kcomp1
About the M68kcomp1 PCB
M68kcomp1 is an open source PCB design by jtsiomb, published on GitHub under the CC-BY-SA-4.0 license. It is a 2-layer board measuring 159.5 × 99.8 mm, with 50 components from 30 distinct parts.
Other key parts include the 74LS04, 74LS08, 74LS32, 74HC05 and address_decoder. By type, the board carries 19 capacitors, 16 ICs, 8 resistors, 3 connectors, 2 switches and 1 crystal.
From the project
Homebrew Motorola 68010 computer
Homebrew 68k computer project 1 ===============================
About ----- The purpose of this project is to design a minimal but useful homebrew computer, based on the Motorola 68010 16/32-bit processor.
The current hardware design is broken into a main processor board, and an I/O and expansion board with an AVR microcontroller playing the role of UART, timer, and RTC all in one.
Main components on the M68kcomp1
M68kcomp1 bill of materials (BOM)
50 components, 30 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 74LS04 | SOIC-14_3.9x8.7mm_Pitch1.27mm | U1 |
| 1 | 74LS08 | SOIC-14_3.9x8.7mm_Pitch1.27mm | U2 |
| 1 | 74LS32 | SOIC-14_3.9x8.7mm_Pitch1.27mm | U3 |
| 1 | 74HC05 | SOIC-14_3.9x8.7mm_Pitch1.27mm | U4 |
| 1 | address_decoder | addr_dec_module | U5 |
| 1 | 74HC04 | SOIC-14_3.9x8.7mm_Pitch1.27mm | U6 |
| 1 | 74HC74 | SOIC-14_3.9x8.7mm_Pitch1.27mm | U7 |
| 1 | 74LS148 | SOIC-16_3.9x9.9mm_Pitch1.27mm | U8 |
| 2 | at28c64 | DIP-28_W15.24mm_oval | U9, U13 |
| 4 | sram_um61512ak | DIP-32L | U10, U11, U15, U16 |
| 1 | 68010D | DIP-64_W22.86mm | U12 |
| 1 | NE555 | DIP-8_W7.62mm | U14 |
| 1 | 20MHz | Crystal_HC49-SD_SMD | Y1 |
| 1 | CONN_CTL_DATA | Pin_Header_Straight_2x18 | P1 |
| 1 | CONN_ADDR | Pin_Header_Straight_2x13_oval | P2 |
| 1 | POWER | Pin_Header_Angled_1x03 | P3 |
| 1 | RST_SW | SW_PUSH_6mm | SW1 |
| 1 | PWR_SW | SW_Micro_SPST | SW2 |
| 1 | LED | LED_0805 | D1 |
| 12 | 0.1uF | C_0805 | C1, C2, C3, C6, C7, C10, C11, C12 +4 |
Show 10 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | 22pF | C_0805 | C4, C5 |
| 1 | 10nF | C_0805_HandSoldering | C8 |
| 1 | 1uF | c_elec_4x5.7 | C9 |
| 2 | 0.1uF | C_Disc_D7.5_P5 | C16, C17 |
| 1 | 4.7uF | c_elec_4x5.7 | C18 |
| 1 | 47k | R_0805 | R1 |
| 1 | 120R | R_0805 | R2 |
| 4 | 4.7k | R_0805 | R3, R4, R5, R6 |
| 1 | 1M | R_0805_HandSoldering | R7 |
| 1 | 330 | R_0805 | R8 |
M68kcomp1 design files
The KiCad project lives in the jtsiomb/m68kcomputer repository on GitHub; these links point at the commit this page was built from.
- Layouthw/m68kcomp1.kicad_pcb
M68kcomp1: common questions
How big is the M68kcomp1 PCB?
The M68kcomp1 measures 159.5 × 99.8 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the M68kcomp1?
50 components, from 30 distinct parts. The full bill of materials is listed on this page.
Where can I download the M68kcomp1 design files?
From the jtsiomb/m68kcomputer repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the M68kcomp1 design in my own project?
Yes, under the terms of its CC-BY-SA-4.0 license, which jtsiomb chose for the repository.
