65816-computer
About the 65816-computer PCB
65816-computer is an open source PCB design by mike42, published on GitHub. It is a 4-layer board measuring 169.7 × 99.8 mm, with 92 components from 52 distinct parts.
Other key parts include the SST39LF010, 74AC245, 74AC573, W65C816S and MIC2775. By type, the board carries 20 connectors, 17 resistors, 16 capacitors, 14 ICs, 10 test points and 5 jumpers.
It belongs with the retro computing designs in this gallery.
From the project
A 65C816-based homebrew computer (prototype)
This is a prototype 65C816-based computer. It features a 1.8432 MHz processor, 1 megabyte of static RAM, a 65C22 I/O port, and an NXP SC16C752 dual UART.
This is a learning project, and I am blogging about it as I progress.
- A first look at the 65C816 processor - 65C816 computer - initial prototype - Interfacing an NXP UART to an 8-bit computer - Let’s implement preemptive multitasking - Building an emulator for my 65C816 computer - 65C816 computer - second prototype - Building a 65C816 test board - Let’s implement power-on self test (POST) - Let’s make a bootloader – Part 1 - Let’s make a…
Main components on the 65816-computer
65816-computer bill of materials (BOM)
92 components, 52 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | SST39LF010 | PLCC-32_11.4x14.0mm_P1.27mm | U1 |
| 1 | 74AC245 | DIP-20_W7.62mm_Socket | U2 |
| 1 | 74AC573 | DIP-20_W7.62mm_Socket | U3 |
| 1 | W65C816S | DIP-40_W15.24mm_Socket | U4 |
| 1 | MIC2775 | SOT-23-5_HandSoldering | U5 |
| 1 | Address_Decoder | DIP-24_W7.62mm_Socket | U6 |
| 2 | AS6C4008 | DIP-32_W15.24mm_Socket | U7, U8 |
| 1 | AT28C256 | DIP-28_W15.24mm_Socket | U9 |
| 1 | 74AC74 | DIP-14_W7.62mm_Socket | U10 |
| 1 | 74AC138 | DIP-16_W7.62mm_Socket | U11 |
| 1 | SC16C752 | LQFP-48_7x7mm_P0.5mm | U12 |
| 1 | W65C22S | DIP-40_W15.24mm_Socket | U13 |
| 1 | DS1813-5+ | TO-92_Inline | U14 |
| 2 | MXO45HS | Oscillator_DIP-8 | X1, X2 |
| 2 | Oscillator_SMD_IDT_JU6-6_7.0x5.0mm_P2.54mm | Oscillator_SMD_IDT_JU6-6_7.0x5.0mm_P2.54mm | X1_ALT, X2_ALT |
| 1 | EXT_LED_PWR | PinHeader_1x02_P2.54mm_Vertical | J1 |
| 1 | EXT_SW_RES | PinHeader_1x02_P2.54mm_Vertical | J2 |
| 1 | Power | JST_XH_B2B-XH-A_1x02_P2.50mm_Vertical | J3 |
| 1 | UART_A | PinHeader_2x06_P2.54mm_Vertical | J4 |
| 1 | UART_B | PinHeader_2x06_P2.54mm_Vertical | J5 |
Show 32 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | Port_A | PinHeader_2x06_P2.54mm_Vertical | J6 |
| 1 | Port_B | PinHeader_2x06_P2.54mm_Vertical | J7 |
| 4 | Conn_01x08 | PinHeader_1x08_P2.54mm_Vertical | J8, J9, J10, J12 |
| 2 | Conn_01x04 | PinHeader_1x04_P2.54mm_Vertical | J11, J17 |
| 3 | Conn_01x06 | PinHeader_1x06_P2.54mm_Vertical | J13, J14, J16 |
| 1 | Conn_01x03 | PinHeader_1x03_P2.54mm_Vertical | J15 |
| 1 | Conn_01x07 | PinSocket_1x07_P2.54mm_Vertical | J18 |
| 1 | Conn_02x06 | PinHeader_2x03_P2.54mm_Vertical | J19 |
| 1 | Conn_01x02 | PinHeader_1x02_P2.54mm_Vertical | J20 |
| 1 | Speaker_Enable | PinHeader_1x02_P2.54mm_Vertical | JP1 |
| 1 | CLK_SEL | PinHeader_1x03_P2.54mm_Vertical | JP2 |
| 2 | Jumper_2_Bridged | PinHeader_1x02_P2.54mm_Vertical | JP3, JP4 |
| 1 | SolderJumper_2_Open | SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP5 |
| 1 | Speaker | Buzzer_TDK_PS1240P02BT_D12.2mm_H6.5mm | LS1 |
| 1 | SW_RES | SW_TH_Tactile_Omron_B3F-10xx | SW1 |
| 1 | SW_DIP_x02 | SW_DIP_SPSTx02_Slide_6.7x6.64mm_W8.61mm_P2.54mm_LowProfile | SW2 |
| 1 | CLK | TestPoint_Keystone_5005-5009_Compact | TP1 |
| 1 | X2_OUT | TestPoint_Keystone_5005-5009_Compact | TP2 |
| 1 | ~{RES} | TestPoint_Keystone_5005-5009_Compact | TP4 |
| 1 | ~{IRQ} | TestPoint_Keystone_5005-5009_Compact | TP5 |
| 1 | ~{NMI} | TestPoint_Keystone_5005-5009_Compact | TP6 |
| 4 | GND | TestPoint_Keystone_5005-5009_Compact | TP7, TP8, TP9, TP10 |
| 1 | X1_OUT | TestPoint_Keystone_5005-5009_Compact | TP11 |
| 1 | RES | LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D1 |
| 1 | PWR | LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D2 |
| 1 | EMU | LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D3 |
| 14 | 0.1 µF | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1, C2, C3, C4, C5, C6, C7, C8 +6 |
| 1 | 100 µF | CP_Radial_D6.3mm_P2.50mm | C15 |
| 1 | 4.7 µF | CP_Radial_D4.0mm_P1.50mm | C16 |
| 3 | 3.3 k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R2, R3 |
| 4 | 1 k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R4, R5, R6, R17 |
| 10 | 10 k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R7, R8, R9, R10, R11, R12, R13, R14 +2 |
65816-computer design files
The KiCad project lives in the mike42/65816-computer repository on GitHub; these links point at the commit this page was built from.
65816-computer: common questions
How big is the 65816-computer PCB?
The 65816-computer measures 169.7 × 99.8 mm, has 4 copper layers and is 4.69 mm thick.
How many components are on the 65816-computer?
92 components, from 52 distinct parts. The full bill of materials is listed on this page.
Where can I download the 65816-computer design files?
From the mike42/65816-computer repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the 65816-computer design in my own project?
The repository has no license, so all rights stay with mike42. Use it as a reference, and ask the author before reusing the design.
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