8-bit Bus Output XOR
About the 8-bit Bus Output XOR PCB
8-bit Bus Output XOR is an open source PCB design by DragonMinded, published on GitHub. It is a 2-layer board measuring 119.4 × 116.8 mm, with 149 components from 10 distinct parts.
By type, the board carries 75 resistors, 65 transistors, 7 connectors and 2 capacitors.
From the project
Hardware and software files for the MiniDragon CPU.
Schematics, hardware simulator and software files for the MiniDragon CPU. This is a from-scratch CPU that I designed and am implementing using transistors, capacitors, resistors and diodes. The goal is to make an 8-bit CPU that could be used for general-purpose computing. There are a lot of toy instruction sets floating around on the web. I chose instead to design my own, loosely based off of the PDP and 6502. It is a single accumulator design with a pair of 16-bit stack pointers and a pair of temporary 8-bit registers. Instructions are 8 bits, operands are 8 bits from memory, temporary…
8-bit Bus Output XOR bill of materials (BOM)
149 components, 10 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 65 | 2N2222 | TO-92_Inline | Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8 +57 |
| 1 | EN | PinHeader_1x01_P2.54mm_Vertical | J1 |
| 1 | A | PinHeader_1x08_P2.54mm_Vertical | J2 |
| 1 | B | PinHeader_1x08_P2.54mm_Vertical | J3 |
| 1 | OUT | PinHeader_1x08_P2.54mm_Vertical | J4 |
| 3 | POWER | PinHeader_1x02_P2.54mm_Vertical | J5, J6, J7 |
| 2 | 0.1uF | C_Disc_D4.3mm_W1.9mm_P5.00mm | C1, C2 |
| 49 | 10K | R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R1, R4, R5, R6, R7, R12, R13, R14 +41 |
| 25 | 1K | R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R2, R8, R9, R10, R11, R20, R21, R26 +17 |
| 1 | 100 | R_Axial_DIN0309_L9.0mm_D3.2mm_P12.70mm_Horizontal | R3 |
8-bit Bus Output XOR design files
The KiCad project lives in the DragonMinded/minidragon repository on GitHub; these links point at the commit this page was built from.
8-bit Bus Output XOR: common questions
How big is the 8-bit Bus Output XOR PCB?
The 8-bit Bus Output XOR measures 119.4 × 116.8 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the 8-bit Bus Output XOR?
149 components, from 10 distinct parts. The full bill of materials is listed on this page.
Where can I download the 8-bit Bus Output XOR design files?
From the DragonMinded/minidragon repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the 8-bit Bus Output XOR design in my own project?
The repository has no license, so all rights stay with DragonMinded. Use it as a reference, and ask the author before reusing the design.
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