MECB 68008 CPU
About the MECB 68008 CPU PCB
MECB 68008 CPU is an open source PCB design by epaell, published on GitHub. It is a 2-layer board measuring 99.8 × 99.8 mm, with 18 components from 13 distinct parts.
Other key parts include the ATF22V10C-15PU, SST39SF040, MC68008FN, TC1232CPA and GAL22V10. By type, the board carries 6 ICs, 6 capacitors, 2 resistors, 1 crystal, 1 connector and 1 jumper.
From the project
TODO: - test ability to load software via Tutor - OK! - test board with 9958 VDP card - OK! - test interrupt functionality - Seems to work with timer. - test ability to write to FLASH ROM and check write-protect - seems OK. - test expansion capability - Seems to function OK with
TODO: - test ability to load software via Tutor - OK! - test board with 9958 VDP card - OK! - test interrupt functionality - Seems to work with timer. - test ability to write to FLASH ROM and check write-protect - seems OK. - test expansion capability - Seems to function OK with ROM expansion card. - rework the PLD to concentrate addressing in one PLD and remaining GLUE in the other. Currently it is quite messy. - rework the PCB layout to be incorporate the bodge fixes needed for v0.1.
Main components on the MECB 68008 CPU
MECB 68008 CPU bill of materials (BOM)
18 components, 13 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ATF22V10C-15PU | DIP-24_W7.62mm_Socket_LongPads_ZIF_Friendly | U1 |
| 1 | SST39SF040 | DIP-32_W15.24mm_Socket_LongPads | U2 |
| 1 | MC68008FN | PLCC-52_THT-Socket | U3 |
| 1 | TC1232CPA | DIP-8_W7.62mm_Socket_LongPads | U4 |
| 1 | GAL22V10 | DIP-24_W7.62mm_Socket_LongPads | U5 |
| 1 | AS6C4008-55 | DIP-32_W15.24mm_Socket_LongPads | U6 |
| 1 | 8 MHz | DIP-4-8_W7.62mm_Socket_LongPads | Y1 |
| 1 | MECB_64AC | DIN41612_C_2x32_C64AC_Male_Horizontal_THT | J1 |
| 1 | Jumper_2_Open | PinHeader_1x02_P2.54mm_Vertical | JP1 |
| 1 | SW_DIP_PB | SW_Tactile_Straight_KSA0Axx1LFTR | SW1 |
| 6 | 0.1uF | C_Disc_D5.0mm_W2.5mm_P5.00mm | C1, C2, C3, C4, C5, C6 |
| 1 | 4K7 | R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R1 |
| 1 | R_Network08_US | R_Array_SIP9 | RN1 |
MECB 68008 CPU design files
The KiCad project lives in the epaell/MECB repository on GitHub; these links point at the commit this page was built from.
MECB 68008 CPU: common questions
How big is the MECB 68008 CPU PCB?
The MECB 68008 CPU measures 99.8 × 99.8 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the MECB 68008 CPU?
18 components, from 13 distinct parts. The full bill of materials is listed on this page.
Where can I download the MECB 68008 CPU design files?
From the epaell/MECB repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the MECB 68008 CPU design in my own project?
The repository has no license, so all rights stay with epaell. Use it as a reference, and ask the author before reusing the design.
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