MECB KB
About the MECB KB PCB
MECB KB is an open source PCB design by epaell, published on GitHub. It is a 2-layer board measuring 99.8 × 99.8 mm, with 15 components from 9 distinct parts.
Other key parts include the ATF22V10C-15PU, 8048 and 74LS06. By type, the board carries 7 capacitors, 4 connectors, 3 ICs and 1 jumper.
From the project
I have confirmed that the V1.0 version of the KB board appears to be fully operational with MECB and RomWBW. By default, the PLD sets the address of the board registers to $60 and $64 (to maintain compatibility with RomWBW).
I have confirmed that the V1.0 version of the KB board appears to be fully operational with MECB and RomWBW. By default, the PLD sets the address of the board registers to $60 and $64 (to maintain compatibility with RomWBW).
Note that this board requires the VIA VT82C64 - I have tried with other versions of the 8264 an the board does not work with those (I'm not 100% certain why but it seems like the firmware might be incompatible).
Main components on the MECB KB
MECB KB bill of materials (BOM)
15 components, 9 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ATF22V10C-15PU ATF16V8 | DIP-20_W7.62mm_Socket_LongPads | U1 |
| 1 | 8048 | DIP-40_W15.24mm_Socket_LongPads | U2 |
| 1 | 74LS06 | DIP-14_W7.62mm_Socket_LongPads | U3 |
| 1 | MECB_64AC | DIN41612_C_2x32_C64AC_Male_Horizontal_THT | J1 |
| 2 | PS2-MINIDIN6-FEMALE-SINGLE | MINI-DIN-6-FULL-SHIELD | J2, J3 |
| 1 | Conn_02x06_Odd_Even | PinHeader_2x06_P2.54mm_Vertical | J4 |
| 1 | Jumper_2_Open | PinHeader_1x02_P2.54mm_Vertical | JP1 |
| 3 | 0.1uF | C_Disc_D5.0mm_W2.5mm_P5.00mm | C1, C2, C3 |
| 4 | 47pF | C_Disc_D7.5mm_W5.0mm_P7.50mm | C4, C5, C6, C7 |
MECB KB design files
The KiCad project lives in the epaell/MECB repository on GitHub; these links point at the commit this page was built from.
- LayoutMECB_KB/MECB_KB.kicad_pcb
- SchematicMECB_KB/MECB_KB.kicad_sch
MECB KB: common questions
How big is the MECB KB PCB?
The MECB KB measures 99.8 × 99.8 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the MECB KB?
15 components, from 9 distinct parts. The full bill of materials is listed on this page.
Where can I download the MECB KB 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 KB 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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