2 layers248.9 × 139.7 mm
6809 Plus EPROM Version
roberto314/GIMIX_reproduction
Reproducing SS-50 and SS-30 cards and GIMIX Ghost Case and Mainboard
167 parts1BSD-2-Clause
2 layers118.1 × 73.7 mm
6502 computer
sebobialy/6502_computerSimple 6502 DIY computer for peripherial prototyping
- Size
- 118.1 × 73.7 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 57
- Nets
- 92
- Pads
- 374
- Tracks, vias
- 1,904, 116
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 6 Apr 2024
- Updated
- 26 Oct 2024
Overview
6502 computer is an open-source printed circuit board by sebobialy, from the sebobialy/6502_computer repository on GitHub, published under the MIT licence. It is a 2-layer board of 118.1 × 73.7 mm with 57 parts on 92 nets, routed with 1,904 tracks and 116 vias.
It is built around the CH340N, 74LS00SC and 74LS139PC, with the 74LS93SC, DS1813-5+ and MC6840CP among its other parts. Its parts include 12 resistors, 11 capacitors, 11 ICs, 7 connectors and 3 switches. It belongs with the retro computing and games boards of this library.
Main components
7
CH340N
SOP-8-20℃~+70℃ 1 2Mbps 3.3V、5V USB 2.0 USB to serial SOP-8 USB Converters ROHSWCH (Nanjing Qinheng Microelectronics)USB Converters
74LS00SC
-0℃~+70℃ 15ns@5V,50pF 2 2.7V 2V 4 4.75V~5.25V 400uA 500mV 74LS 800mV 8mA NAND Gate - Logic Gates ROHSTexas InstrumentsLogic Gates
74LS139PC
PDIP-1622ns 74LS 8mA Decoder Single Supply PDIP-16 Signal Switches, Multiplexers, DecodersonsemiSignal Switches, Multiplexers, Decoders74LS93SC
-- Counters, DividersTexas InstrumentsCounters, DividersDS1813-5+
TO-92-3-40℃~+85℃@(Ta) 1 1.2V~5.5V 150ms 4.75V Active Low No Open Drain Voltage Monitor Yes TO-92-3 Supervisor and Reset ICs ROHSAnalog DevicesSupervisor And Reset ICs
MC6840CP
-- Timers / Counters ROHSRochester Electronics, LLCTimers / Counters
BC817
SOT-231 NPN 100nA 150MHz 300mW 40 45V 500mA 5V 700mV NPN SOT-23 Bipolar (BJT) ROHSShikuesBipolar (BJT)
README
README.md6502_computer
Simple 6502 DIY computer for peripheral prototyping
This is a work in progress. Do not try to manufacture yet.
Features
- 65C02 with selectable speed
- 6551 UART/ACIA with optional USB support via CH340N
- 6840 clock chip (with buzzer attached)
- CPU bus accessible, with several selection signals for various parts of memory
- SyMon III directly working through UART/USB
- Simple emulator
- PCB with all possible markings, memory map, and values
- Compact form, retro look&feel
Parts
57| Qty | Value | Footprint | References |
|---|---|---|---|
| 9 | 100n | Capacitor_SMD:C_0805_2012Metric | C2, C3, C4, C5, C6, C7, C8, C9, C10 |
| 6 | 10k | Resistor_SMD:R_0805_2012Metric | R7, R8, R9, R10, R11, R12 |
| 4 | MountingHole | MountingHole:MountingHole_3.2mm_M3 | H1, H2, H3, H4 |
| 3 | SW_Push | Button_Switch_THT:SW_PUSH_6mm_H4.3mm | SW1, SW2, SW3 |
| 2 | 1k | Resistor_SMD:R_0805_2012Metric | R4, R6 |
| 2 | 3.3k | Resistor_SMD:R_0805_2012Metric | R2, R3 |
| 2 | Conn_01x05 | Connector_Molex:Molex_KK-254_AE-6410-05A_1x05_P2.54mm_Vertical | J5, J6 |
| 2 | TestPoint | Connector_PinHeader_2.54mm:PinHeader_1x01_P2.54mm_Vertical | TP1, TP2 |
| 1 | 1.8432MHz | Crystal:Crystal_HC18-U_Horizontal | Y1 |
| 1 | 10nF | Capacitor_SMD:C_0805_2012Metric | C11 |
| 1 | 1M | Resistor_SMD:R_0805_2012Metric | R1 |
| 1 | 220 | Resistor_SMD:R_0805_2012Metric | R5 |
| 1 | 27C64 | Package_DIP:DIP-28_W15.24mm_LongPads | U11 |
| 1 | 30p | Capacitor_SMD:C_0805_2012Metric | C1 |
| 1 | 5.6V | Diode_SMD:D_SOD-123 | D1 |
| 1 | 6502 | Package_DIP:DIP-40_W15.24mm_LongPads | U1 |
| 1 | 6551 | Package_DIP:DIP-28_W15.24mm_LongPads | U2 |
| 1 | 74LS00 | Package_DIP:DIP-14_W7.62mm_LongPads | U4 |
| 1 | 74LS138 | Package_DIP:DIP-16_W7.62mm_LongPads | U5 |
| 1 | 74LS139 | Package_DIP:DIP-16_W7.62mm_LongPads | U6 |
| 1 | 74LS93 | Package_DIP:DIP-14_W7.62mm_LongPads | U7 |
| 1 | ACO-xxxMHz | Oscillator:Oscillator_DIP-14 | X1 |
| 1 | BC817 | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | Buzzer | Buzzer_Beeper:MagneticBuzzer_Kingstate_KCG0601 | BZ1 |
| 1 | CH340N | Package_SO:SOP-8_3.9x4.9mm_P1.27mm | U8 |
| 1 | CY62256-70PC | Package_DIP:DIP-28_W15.24mm_LongPads | U9 |
| 1 | Conn_01x02 | Connector_Molex:Molex_KK-254_AE-6410-02A_1x02_P2.54mm_Vertical | J4 |
| 1 | Conn_01x04 | Connector_Molex:Molex_KK-254_AE-6410-04A_1x04_P2.54mm_Vertical | J1 |
| 1 | Conn_02x04_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x04_P2.54mm_Vertical | J2 |
| 1 | Conn_02x20_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x20_P2.54mm_Vertical | J7 |
| 1 | DS1813-5+ | Package_TO_SOT_THT:TO-92 | U3 |
| 1 | LED | Diode_SMD:D_0805_2012Metric | D2 |
| 1 | MC6840 | Package_DIP:DIP-28_W15.24mm_LongPads | U10 |
| 1 | Polyfuse | Fuse:Fuse_0805_2012Metric | F1 |
| 1 | USB_B | Connector_USB:USB_B_Lumberg_2411_02_Horizontal | J3 |
Questions
How big is the 6502 computer PCB?
It measures 118.1 × 73.7 mm and has 2 copper layers, 1.6 mm thick.
What parts does the 6502 computer use?
57 parts, built around the CH340N, 74LS00SC, 74LS139PC and 74LS93SC. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the 6502 computer KiCad files?
From the sebobialy/6502_computer repository on GitHub, at the commit this page was made from: the board is pcb/6502_computer/6502_computer.kicad_pcb and its schematic pcb/6502_computer/6502_computer.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the 6502 computer design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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