HardLabs

RISKYMSX

arkadiuszmakarenko·RISKYMSX·board/RISKYMSXCart.kicad_pcb

RISKYMSX PCB layout, top view — open source RISC-V board by arkadiuszmakarenko
Simulate this board

About the RISKYMSX PCB

RISKYMSX is an open source RISC-V PCB design by arkadiuszmakarenko, published on GitHub. It is a 4-layer board measuring 71.9 × 55.5 mm, with 37 components from 21 distinct parts.

Its main chip is the CH32V307VCT6, from the RISC-V family. Other key parts include the LM1117MPX-3.3 and MCP6001-OT. By type, the board carries 18 capacitors, 7 resistors, 5 connectors, 3 ICs, 2 diodes and 1 fuse.

It belongs with the retro computing and audio designs in this gallery.

From the project

RISKY MSX Cartridge based on WCH CH32V303V chip. It is 256KB cart programmed using USB Fat32 flash drive

The RISKYMSX cartridge by Arkadiusz Makarenko is a compact MSX flash ROM cartridge based on the inexpensive CH32V30xVCT6 RISC-V MCU which can be easily programmed from a MSX computer using a FAT formatted USB pen drive containing ROM files.

[](images/RISKYMSXCart-Rev2.1-front-populated-1024px.png)

Support for up to 256KB ROMs SCC emulation Firmware updates using a USB-A cable (or alternatively a WCH-LinkE programmer) ROM Flashing: No external flash programmer is needed A ROM can be flashed in-system using a MSX computer and a FAT-formatted USB pen drive ROM Flashing Mode is activated by…

RISKYMSX, from the project README
From the project README

Main components on the RISKYMSX

LM1117MPX-3.3CH32V307VCT6MCP6001-OT

RISKYMSX bill of materials (BOM)

37 components, 21 distinct parts.

QtyPartRefs
1
LM1117MPX-3.3
IC8
1
CH32V307VCT6
U1
1
MCP6001-OT
U2
1
MSX_CART
CN1
3
Conn_01x02
J1, J2, J8
1
USB_1
J7
1
—
@HOLE1
1
0.5A
F2
1
LED
D1
1
PWR
D5
1
100nF
C1
9
100nF
C2, C4, C5, C6, C8, C9, C10, C11 +1
1
10uF
C3
1
100nF
C7
2
4.7uF
C12, C20
1
1uF
C13
2
1nF
C14, C17
1
1uF
C18
5
10K
R1, R2, R4, R9, R10
1
220
R3
Show 1 more
QtyPartRefs
1
220
R5

RISKYMSX design files

The KiCad project lives in the arkadiuszmakarenko/RISKYMSX repository on GitHub; these links point at the commit this page was built from.

RISKYMSX: common questions

What microcontroller does the RISKYMSX use?

The RISKYMSX is built around the CH32V307VCT6, from the RISC-V family.

How big is the RISKYMSX PCB?

The RISKYMSX measures 71.9 × 55.5 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the RISKYMSX?

37 components, from 21 distinct parts. The full bill of materials is listed on this page.

Where can I download the RISKYMSX design files?

From the arkadiuszmakarenko/RISKYMSX repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the RISKYMSX design in my own project?

The repository has no license, so all rights stay with arkadiuszmakarenko. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the RISKYMSX without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RISC-V firmware against it before you order a PCB.

Similar boards