Multicomp6809
About the Multicomp6809 PCB
Multicomp6809 is an open source PCB design by nealcrook, published on GitHub. It is a 2-layer board measuring 170 × 145 mm, with 115 components from 49 distinct parts.
Other key parts include the Z80CTC, 74LVC245, 74HCT123, 74HCT10 and 74LVC244. By type, the board carries 33 capacitors, 31 resistors, 19 connectors, 17 ICs, 7 diodes and 3 switches.
It belongs with the retro computing designs in this gallery.
From the project
Software and modifications for Grant Searle's multicomp FPGA design, mostly focussed towards the 6809 variant: Forth (CamelForth), FLEX, CUBIX, NITROS9, FUZIX and the exec09 emulator.
I always wanted a 6809 machine. I still have the A4 notebook where I sketched out design ideas. However, I never simultaneously had the time and money to build one from scratch (even though I have accumulated all of the parts in my junk box over the years).
When I saw this http://searle.hostei.com/grant/Multicomp/index.html I realised I could satisfy my yearning without too much soldering.
Main components on the Multicomp6809
Multicomp6809 bill of materials (BOM)
115 components, 49 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | Z80CTC | DIP-28_W15.24mm | U1 |
| 1 | 74LVC245 | DIP-20_W7.62mm | U2 |
| 2 | 74HCT123 | DIP-16_W7.62mm | U3, U10 |
| 1 | 74HCT10 | DIP-14_W7.62mm | U4 |
| 3 | 74LVC244 | DIP-20_W7.62mm | U5, U6, U16 |
| 2 | AS6C4008-55PCN | DIP-32_W15.24mm | U7, U9 |
| 1 | 74HCT244 | DIP-20_W7.62mm | U8 |
| 1 | 74LS367 | DIP-16_W7.62mm | U11 |
| 1 | Z80PIO | DIP-40_W15.24mm | U12 |
| 1 | WD2797 | DIP-40_W15.24mm | U13 |
| 1 | 74LS174 | DIP-16_W7.62mm | U14 |
| 1 | 74LS06 | DIP-14_W7.62mm | U15 |
| 1 | 74LS38 | DIP-14_W7.62mm | U17 |
| 5 | Conn_01x04_Male | PinHeader_1x04_P2.54mm_Vertical | J1, J2, J14, J15, J16 |
| 1 | Conn_02x01 | PinHeader_2x01_P2.54mm_Vertical | J3 |
| 2 | Conn_02x08_Odd_Even | IDC-Header_2x08_P2.54mm_Vertical | J4, J11 |
| 2 | Conn_02x02_Odd_Even | PinHeader_2x02_P2.54mm_Vertical | J5, J10 |
| 4 | Conn_02x14_Even_Odd | PinSocket_2x14_P2.54mm_Vertical | J6, J7, J8, J9 |
| 1 | Conn_01x03_Male | PinHeader_1x03_P2.54mm_Vertical | J12 |
| 1 | Mini-DIN_6pins_ver2 | Connector_Mini-DIN_Female_6Pin_2rows | J13 |
Show 29 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | Conn_01x06 | uSDcard_breakout_1x06_P2.54mm | J19 |
| 1 | Conn_02x17_Odd_Even | IDC-Header_2x17_P2.54mm_Vertical | J20 |
| 1 | Conn_01x01_Male | PinHeader_1x01_P2.54mm_Vertical | J100 |
| 2 | Conn_02x08_Odd_Even | IDC-Header_2x08_P2.54mm_Vertical | PL2, PL3 |
| 1 | Conn_02x13_Odd_Even | IDC-Header_2x13_P2.54mm_Vertical | PL4 |
| 1 | 10k | Potentiometer_Bourns_3296W_Vertical | RV1 |
| 1 | 50k | Potentiometer_Bourns_3296W_Vertical | RV2 |
| 3 | SW_Push | MOMENTARY_TACTILE_RT_ANGLE | SW1, SW2, SW3 |
| 4 | LED | LED_D5.0mm | D1, D2, D3, D4 |
| 2 | 3V6 | D_DO-35_SOD27_P7.62mm_Horizontal | D5, D6 |
| 1 | 1N4148 | D_DO-35_SOD27_P7.62mm_Horizontal | D7 |
| 22 | 0.1u | C_Disc_D3.0mm_W2.0mm_P2.50mm | C1, C4, C5, C6, C7, C9, C11, C13 +14 |
| 5 | 10u | CP_Radial_D5.0mm_P2.50mm | C2, C3, C20, C29, C32 |
| 1 | 47u | CP_Radial_Tantal_D4.5mm_P5.00mm | C8 |
| 1 | 10u | CP_Radial_Tantal_D4.5mm_P5.00mm | C10 |
| 1 | 1u | CP_Radial_Tantal_D4.5mm_P5.00mm | C12 |
| 1 | 33p | C_Disc_D3.0mm_W2.0mm_P2.50mm | C15 |
| 1 | 0.22u | C_Disc_D7.5mm_W2.5mm_P5.00mm | C24 |
| 1 | 5-65p | Trimmer_Vishay_BFC2808_Fig2 | C25 |
| 4 | 220R | R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R1, R2, R3, R4 |
| 9 | 10k | R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R5, R7, R17, R18, R20, R22, R100, R101 +1 |
| 1 | 270k | R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R6 |
| 1 | 560k | R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R8 |
| 5 | 150R | R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R9, R12, R13, R14, R15 |
| 2 | 33R | R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R10, R19 |
| 1 | 5k6 | R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R11 |
| 1 | 100k | R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R16 |
| 1 | 2k2 | R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R21 |
| 6 | R | R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R23, R24, R25, R26, R27, R28 |
Multicomp6809 design files
The KiCad project lives in the nealcrook/multicomp6809 repository on GitHub; these links point at the commit this page was built from.
Multicomp6809: common questions
How big is the Multicomp6809 PCB?
The Multicomp6809 measures 170 × 145 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Multicomp6809?
115 components, from 49 distinct parts. The full bill of materials is listed on this page.
Where can I download the Multicomp6809 design files?
From the nealcrook/multicomp6809 repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Multicomp6809 design in my own project?
The repository has no license, so all rights stay with nealcrook. Use it as a reference, and ask the author before reusing the design.
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