8 16 computer 2
About the 8 16 computer 2 PCB
8 16 computer 2 is an open source PCB design by halfburnttoast, published on GitHub. It is a 2-layer board measuring 208 × 110 mm, with 111 components from 40 distinct parts.
Other key parts include the AT28C64B-15PU, 74HCT02, 74HC132, 74HC02 and MCP100-475D. By type, the board carries 49 capacitors, 46 ICs, 7 connectors, 5 resistors, 1 crystal and 1 switch.
From the project
Version 1.1 of my 8-bit, TTL computer.
This is the official repository for my TCPU816, 8-bit, homebrew computer. The computer is a completely custom architecture using 74-series logic gates and EEPROMs.
The overall goals of this project were to: Minimize the chip count. Use the fewest EEPROM's possible. Avoid using PLAs, CPLDs, and microcontrollers. Maximize stability and operating speed. Leave the most amount of RAM possible to the user. Make the project fully open-source for others to tinker with and learn from.
Main components on the 8 16 computer 2
8 16 computer 2 bill of materials (BOM)
111 components, 40 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 3 | AT28C64B-15PU | DIP-28_W15.24mm | IC1, IC2, IC3 |
| 1 | 74HCT02 | DIP-14_W7.62mm_Socket | U1 |
| 1 | 74HC132 | DIP-14_W7.62mm_Socket | U2 |
| 2 | 74HC02 | DIP-14_W7.62mm_Socket | U3, U7 |
| 1 | MCP100-475D | TO-92L_Inline_Wide | U4 |
| 1 | 74HCT14 | DIP-14_W7.62mm_Socket | U5 |
| 1 | 74HC164 | DIP-14_W7.62mm_Socket | U6 |
| 4 | 74HC273 | DIP-20_W7.62mm_Socket | U8, U10, U11, U24 |
| 1 | 74HC4040 | DIP-16_W7.62mm_Socket | U9 |
| 3 | 74HC138 | DIP-16_W7.62mm_Socket | U12, U13, U14 |
| 2 | 74HC86 | DIP-14_W7.62mm_Socket | U15, U16 |
| 2 | 74HC00 | DIP-14_W7.62mm_Socket | U17, U18 |
| 2 | 74HC157 | DIP-16_W7.62mm_Socket | U19, U20 |
| 1 | 74HC14 | DIP-14_W7.62mm_Socket | U21 |
| 2 | 74HC283 | DIP-16_W7.62mm_Socket | U22, U23 |
| 1 | 74HC74 | DIP-14_W7.62mm_Socket | U25 |
| 7 | 74HC245 | DIP-20_W7.62mm_Socket | U26, U28, U29, U38, U39, U40, U41 |
| 2 | 74HC688 | DIP-20_W7.62mm_Socket | U27, U30 |
| 1 | AS6C4008-55PCN | DIP-32_W15.24mm | U31 |
| 2 | 74HC670 | DIP-16_W7.62mm_Socket | U32, U33 |
Show 20 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 4 | 74HC161 | DIP-16_W7.62mm_Socket | U34, U35, U36, U37 |
| 2 | 74HC574 | DIP-20_W7.62mm_Socket | U42, U43 |
| 1 | 12MHz - 18p | Crystal_HC49-U_Vertical | Y1 |
| 2 | Conn_02x20_Counter_Clockwise | PinSocket_2x20_P2.54mm_Vertical | J1, J4 |
| 1 | Conn_01x02 | PinSocket_1x02_P2.54mm_Vertical | J2 |
| 3 | Conn_01x03_Pin | PinHeader_1x03_P2.54mm_Vertical | J3, J5, J6 |
| 1 | USB_B | USB_B_OST_USB-B1HSxx_Horizontal | J7 |
| 1 | RESET | SW_PUSH_6mm | SW1 |
| 1 | TestPoint | TestPoint_THTPad_1.0x1.0mm_Drill0.5mm | TP4 |
| 1 | D_TVS | D_DO-15_P12.70mm_Horizontal | D1 |
| 2 | 34p | C_Disc_D4.7mm_W2.5mm_P5.00mm | C1, C2 |
| 1 | 330u | CP_Radial_D5.0mm_P2.50mm | C3 |
| 1 | 47u | CP_Radial_D5.0mm_P2.50mm | C4 |
| 43 | 100n | C_Disc_D4.3mm_W1.9mm_P5.00mm | C5, C6, C7, C8, C9, C10, C11, C12 +35 |
| 2 | 100u | CP_Radial_D5.0mm_P2.50mm | C48, C49 |
| 1 | 330 | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1 |
| 1 | 1M | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R2 |
| 1 | Rs | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R3 |
| 1 | 10K | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R4 |
| 1 | 1K | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R8 |
8 16 computer 2 design files
The KiCad project lives in the halfburnttoast/TCPU816-v1 repository on GitHub; these links point at the commit this page was built from.
8 16 computer 2: common questions
How big is the 8 16 computer 2 PCB?
The 8 16 computer 2 measures 208 × 110 mm, has 2 copper layers and is 1.6002 mm thick.
How many components are on the 8 16 computer 2?
111 components, from 40 distinct parts. The full bill of materials is listed on this page.
Where can I download the 8 16 computer 2 design files?
From the halfburnttoast/TCPU816-v1 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 16 computer 2 design in my own project?
The repository has no license, so all rights stay with halfburnttoast. Use it as a reference, and ask the author before reusing the design.
