RISKYMSX

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.

Main Features

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 pressing GRAPH key during MSX boot
- Automatic flashing of ROMs from USB can be achieved via specially named ROM archives
- Manually flashing of ROMs from USB is done using a simple interactive menu
- FAT long filenames are supported
Supported mappers:
- Standard 16KB ROMs
- Standard 32KB ROMs
- Standard 48KB /64KB ROMs
- KONAMI without SSC
- KONAMI with SSC (EN - SCC emulation enabled)
- KONAMI with SSC (DIS - SCC emulation disabled)
- ASCII 8K
- ASCII 16K
- Neo 8k
- Neo 16k

Hardware

The RISKYMSX cartridge is made up of a 4-layer PCB with a reduced set of SMD components and through-hole connectors:

A WCH CH32V303VCT6 MCU (or alternatively a CH32V307VCT6)
Two LEDs, one to indicate power on state, and one lit during ROM Flashing Mode
A LM1117 voltage regulator to provide +3V3 to the MCU from the +5V rail of the MSX cartridge slot
A MCP6001 operational amplifier to enhance the SCC audio signal fed into the MSX cartridge SOUNDIN pin
Three headers:
- B0: open by default, closed only while programming the MCU using the WCHISPTool_CMD tool
- DAT/CLK: unconnected by default, used to program the MCU using the WCH-LinkE programmer via SWDIO/SWCLK
- RX/TX: unconnected by default, serial debug console
One USB Type-A female connector
Several passives required for proper operation of the above components

Revisions

There are several hardware revisions of the cartridge. The main ones are listed here in reverse chronological order.

Rev 2.1 (current)

This version introduces the following changes:

the flash button is removed, as the flashing interface can be accessed by pressing the GRAPH key on the MSX keyboard during boot
unnecessary leds are removed, leaving just the Flash and Power leds
the audio amplifier circuit is enhanced with a low pass filter

See the Bill Of Materials (BoM) generated from the KiCad files for information about the specific components used.

Have a look at the schematic and PCB using KiCanvas.

Rev 2 (obsolete)

This version introduces the following changes:

the LM1117 voltage regulator and related passives are moved to the back of the PCB
the B1 header is removed as it has no practical use
a simple audio amplifier circuit is added for SCC sound


RISKYMSX Rev 2 front render	RISKYMSX Rev 2 rear render

Rev 1 (obsolete)

This is the initial revision of the RISKYMSX cartridge.


RISKYMSX Rev 1 front render	RISKYMSX Rev 1 rear render

Firmware

The firmware implements two different modes of operation for the RISKYMSX cartridge:

Normal Mode. In this mode a ROM cartridge is emulated according to the last ROM flashed using the ROM Flashing Mode.
ROM Flashing Mode. In this mode a ROM can be flashed manually or automatically into the cartridge by using a FAT formatted USB pen drive.

Building a RISKYMSX cartridge

You will need good soldering skills and specific equipment to build a RISKYMSX cartridge. As you probably saw on the Bill Of Materials, there are quite small SMD components like 0603 passives and a LQFP-100 package with 0.5mm pitch that need to be soldered.

Warning

If you are building new boards, please use the current available board revision.

PCB

The PCB can be fabricated by your favorite PCB manufacturer from the supplied gerber files.

Suggested tools

These are example tools used during the manual building of the RISKYMSX cartridge:

silicone heat-resistant mat (TE-616 400x290mm), to avoid burning your precious desk
electronic microscope with 2 LEDs (KKmoon 3" LCD 10X-300X 3.0MP 1080P HDMI electronic digital video microscope), to be able to solder those small 0.5mm pitch pins
temperature controlled soldering station (Yihua 908D), to make good soldering joints
T-1C "horseshoe", T-I and T-1.6D soldering tips (900M series), use the best fitting one for each soldering job
copper sponge, for soldering head cleaning
flux (Mechanic UV80 flux paste), to help keep components in place and achieve good soldering joints
solder (0.5mm, for hobby projects you may use 60% Sn / 40% Pb Flux 2% at your own risk)
desoldering wick (2.5mm is fine), for correcting mistakes if you are human)

Component shopping list

Warning

Aliexpress links may not work, as sellers come and go.

ref	component	req_pcs	item_description	item_option	pcs_per_item	req_items	link
C2, C4, C5, C6, C7, C8, C9, C10, C11, C19	0603 100nF	10	100pcs 0603 SMD Chip Multilayer Ceramic Capacitor 0.5pF - 22uF 10pF 22pF 100pF 1nF 10nF 15nF 100nF 0.1uF 1uF 2.2uF 4.7uF 10uF	0603 100nF 50V	100	1	aliexpress
C18	0603 1uF	1	100pcs 0603 SMD Chip Multilayer Ceramic Capacitor 0.5pF - 22uF 10pF 22pF 100pF 1nF 10nF 15nF 100nF 0.1uF 1uF 2.2uF 4.7uF 10uF	0603 1uF 25V	100	1	aliexpress
C12, C20	0603 4.7uF	2	100pcs 0603 SMD Chip Multilayer Ceramic Capacitor 0.5pF - 22uF 10pF 22pF 100pF 1nF 10nF 15nF 100nF 0.1uF 1uF 2.2uF 4.7uF 10uF	0603 4.7uF 10V	100	1	aliexpress
C3	0603 10uF	1	100pcs 0603 SMD Chip Multilayer Ceramic Capacitor 0.5pF - 22uF 10pF 22pF 100pF 1nF 10nF 15nF 100nF 0.1uF 1uF 2.2uF 4.7uF 10uF	0603 10uF 10V	100	1	aliexpress
C1	1206 100nF	1	100pcs 1206 SMD Chip Multilayer Ceramic Capacitor 0.5pF - 100uF 10pF 100pF 1nF 10nF 15nF 100nF 0.1uF 1uF 2.2uF 4.7uF 10uF 47uF	1206 100nF 50V	100	1	aliexpress
C13	1206 1uF	1	100pcs 1206 SMD Chip Multilayer Ceramic Capacitor 0.5pF - 100uF 10pF 100pF 1nF 10nF 15nF 100nF 0.1uF 1uF 2.2uF 4.7uF 10uF 47uF	1206 1uF 25V	100	1	aliexpress
R1, R2, R4, R9, R10	0603 10K	5	100PCS 0603 1% SMD resistor 0R ~ 10M 1/10W 0 1 10 100 150 220 330 470 ohm 1K 2.2K 10K 100K 1M 0R 1R 10R 100R 150R 220R 330R 470R	10K	100	1	aliexpress
R3, R5	0603 220	2	100PCS 0603 1% SMD resistor 0R ~ 10M 1/10W 0 1 10 100 150 220 330 470 ohm 1K 2.2K 10K 100K 1M 0R 1R 10R 100R 150R 220R 330R 470R	220R	100	1	aliexpress
D1	0805 green LED	1	5 colors x20pcs =100pcs SMD 0805 led kit Red/Green/Blue/Yellow/White LED Light Diode Free Shipping! KIT	n/a	20	1	aliexpress
D5	0805 red LED	1	5 colors x20pcs =100pcs SMD 0805 led kit Red/Green/Blue/Yellow/White LED Light Diode Free Shipping! KIT	n/a	20	0
U1	CH32V307VCT6	1	1-50Pcs New CH32V303VCT6 CH32V303 VCT6 CH32V LQFP-100 Microcontroller IC Chip In Stock Wholesale	2Pcs CH32V303VCT6	2	1	aliexpress
U2	MCP6001-OT	1	20PCS 100% New MCP6001T-I/OT SOT23-5 MCP6001T-I SOT23 MCP6001 SMD MCP6001T Chipset	n/a	20	1	aliexpress
F2	3216 0.5A	1	3216 1206 0.05A 0.1A 0.12A 0.16A 0.2A 0.25A 0.5A 0.75A 1.1A 2A SMD Resettable Fuse PPTC PolySwitch Self-Recovery Fuse	500MA, 1206, 20 Pcs	20	1	aliexpress
IC8	LM1117MPX-3.3	1	5PCs LM1117MPX-1.8 N12A LM1117MPX-2.5 N13A LM1117MPX-3.3 N05A/B LM1117MPX-5.0 N06A LM1117MPX-AJ N03A SOT-223 Linear Regulator	LM1117MPX-3.3	5	1	aliexpress
J1, J2, J8	Conn_01x02	1	10pcs 40 Pin 1x40 Single Row Male and Female 2.54 Breakable Pin Header PCB JST Connector Strip for arduino DIY Kit	Male Color 2pcs each	10	1	aliexpress
J7	USB_1	1	Hot Sale USB Type A Standard Port Female Solder Jacks Connector PCB Socket Type B 90 Degree Horizontal Straight Insertion Patch	10PCS USB-02	10	1	aliexpress

Beware of fake chips and components:

If you receive MCP6001 op-amps marked as SA10, they are probably MCP601 op-amps.
MCP6001 op-amps marked as AAYS should be fine.
LM1117MPX-3.3 voltage regulators marked as N05A should be fine.

Assembling the hardware

The central piece of the cartridge is the CH32V30xVCT6 MCU which is at the same time the most difficult element to solder.

You can solder components in the following suggested order, or do as you feel comfortable:

U1 CH32V30xVCT6
D1,D5 leds
F2 fuse
R3, R5 led resistors
R1 boot0 pull-down resistor
IC8 LM1117MPX-3.3
C3 10uF capacitor
C7 and C1 100nF capacitors
C13 1uF capacitor
C4, C2, C6, C8, C5, C11 and C10 100nF capacitors
R4 and C9 do not need to be populated (confirmation needed)
U2 MCP6001-OT op-amp
C12 and C20 capacitors
C19 capacitor
C18 capacitor
R10, R9 and R2 resistors
C14 and C17 capacitors

Warning

C5 is not marked on the PCB, it is the capacitor to the right of the C11 marking (C11 mark is closer to C5 than to C11)

C11 is the capacitor to the right of the C5 capacitor

Building the firmware on Linux

Note

These instructions have been validated using Ubuntu 24.04.2 LTS.

Cloning the RISKYMSX github repository

cd $HOME
git clone 'https://github.com/arkadiuszmakarenko/RISKYMSX.git'

This will clone the RISKYMSX github repository to the RISKYMSX directory under your home directory.

Installing the MounRiverStudio IDE

Download the MounRiverStudio package for Linux

http://www.mounriver.com/download

Choose the package in tar.xz format.

Uncompress the MounRiverStudio package into a known directory

For example this will uncompress the MounRiverStudio package into the IDE directory under your home directory.

export IDEDIR=$HOME/IDE
mkdir -p $IDEDIR && cd $IDEDIR
tar xJvf /path/to/MounRiverStudio_Linux_X64_V210.tar.xz

Once uncompressed, all package files are under the MRS2 directory.

Setup the MounRiverStudio

You can follow the instructions described on the README file. Alternatively, if you don't want to install library files system-wide you can follow these instructions:

Change to the MRS2/beforeinstall directory

cd MRS2/beforeinstall

Make a backup of the start.sh script file for reference

cp start.sh start.sh.orig

Modify the start.sh script file.

Comment out the lines that install libraries and the line that gives world write access to all files under the MRS-linux-x64 directory. Leave as is the code that copies the udev rules for the WCH programmers and reloads them into udevadm.

#! /bin/bash
#echo  -e "\nCopy Libs"
#sudo cp -P ./lib*    /usr/lib
#echo  -e "Register new Libs"
#sudo ldconfig
echo "copy rules"
sudo cp ./50-wch.rules /etc/udev/rules.d
sudo cp ./60-openocd.rules  /etc/udev/rules.d
echo "Reload rules"
sudo udevadm control  --reload-rules

#chmod -R 777 ../MRS-linux-x64
chmod -R 750 ../MRS-linux-x64

echo -e "DONE"

Run the modified start.sh script

chmod u+x start.sh
./start.sh

Make the chrome-sandbox executable suid to root by changing the ownership of the file to root and setting the SUID bit.

This is required as the MounRiverStudio IDE is an Electron-based application that uses a sandbox approach.

cd ../MRS-linux-x64
sudo chown root chrome-sandbox
sudo chmod 4755 chrome-sandbox

Launching the MounRiverStudio IDE

If you installed the MounRiverStudio IDE under $HOME/IDE, use the following complete command line whenever you need to launch MounRiverStudio IDE specifying where to find the extra libraries needed.

cd $HOME/IDE/MRS2/MRS-linux-x64
LD_LIBRARY_PATH=$(readlink -f ../beforeinstall/) ./mounriver-studio\ 2

Generating the firmware file

After launching the MounRiverStudio IDE, open the RISKYMSXCART project file

File | Open MounRiver Project

/path/to/your/RISKYMSX/firmware/RISKYMSXCART.wvproj

The project file is under the firmware directory on the cloned github repository.

Build the project

Project | Build Project

Programming the firmware

The firmware can be programmed into the RISKYMSX cartridge using the MounRiverStudio IDE and a WCH-LinkE programmer, or using the WCHISPTool_CMD and a USB Type A to Type A cable.

Note

It has been observed that the WCH-LinkE programmer method is more reliable than the WCHISPTool_CMD method when flashing a chip for the first time. It is recommended to use WCH-LinkE for initial firmware programming, there is a lot of reports that programming initial firmware over USB is very unreliable. Upgrading existing firmware using this method works well.

Choose the option that better suits you.

Programming the firmware using the WCH-LinkE programmer

Using the WCH-LinkE allows to program a .HEX firmware file to the CH32V30xVCT6.

Connect the WCH-LinkE programmer and RISKYMSX cartridge

Make sure the RISKYMSX cartridge is disconnected from the MSX.
Using two dupont wires, connect the WCH-LinkE programmer to the RISKYMSX cartridge.

You need to perform specifically the following connections:
- the SWCLK/TCK pin of the WCH-LinkE programmer to the CLK pin of the J8 header of the RISKYMSX cartridge
- the SWDIO/TMS pin of the WCH-LinkE programmer to the DAT pin of the J8 header of the RISKYMSX cartridge

Connect the USB port of the RISKYMSX cartridge to a free USB port of the computer running the MounRiverStudio software.

You will need a USB Type A end on the RISKYMSX cartridge and the appropriate USB end on your computer.

This USB connection will be used just to power the CH32V30xVCT6. After the connection is made, the RISKYMSX cartridge should lit the power led PWR on.

Connect the WCH-LinkE programmer to the computer running the MounRiverStudio IDE on a free USB Type A port.

Once connected, the WCH-LinkE should lit the red led on and the blue led off to indicate operation in RISC-V mode.

If the WCH-LinkE shows any other led combination, you should follow the WCH-LinkE manual to put your WCH-LinkE in RISC-V mode.

One simple way to switch to RISC-V mode is to press and hold the ModeS button while connecting the WCH-LinkE programmer. Note that on some WCH-LinkE programmers the plastic enclosure does not allow access to the ModeS button and you will need to either remove the enclosure to access the ModeS button or use the MounRiverStudio software to switch to RISC-V mode by software.

Launch the MounRiverStudio IDE and open the Download preferences to specify the memory assignment settings and location of the target file

Flash | Download Configuration

Download Settings

MCU Memory Assign: 288K ROM + 32K RAM

Target File : /path/to/your/RISKYMSX/firmware/obj/RISKYMSXCART.hex

Proceed with the firmware download to the RISKYMSX cartridge

Flash | Download

If you receive an error, try power cycling the RISKYMSX cartridge by disconnecting and reconnecting the USB cable from the RISKYMSX cartridge, and then retry the operation.

Programming the firmware using the WCHISPTool_CMD tool

Using the WCH-LinkE allows to program a .BIN firmware file to the CH32V30xVCT6.

If you haven't done it yet, download and uncompress the WCHISPTool_CMD archive

Download the WCHISPTool_CMD
Uncompress the WCHISPTool_CMD.ZIP archive

unzip WCHISPTool_CMD.ZIP

Once uncompressed all package files are under the WCHISPTool_CMD/ directory.

Make sure the WCHISPTool_CMD tool is executable

chmod u+x WCHISPTool_CMD/Linux/bin/x64/WCHISPTool_CMD

This will make the tool binary for x64 processors executable by the current user.

Build the required Linux kernel module

The mentioned Linux kernel mode is used to talk to the ISP interface of the CH32V30xVCT6 chip.

You will need to build the kernel module everytime you upgrade your kernel, otherwise the kernel module will not load because of the mismatch between kernel and module.

cd WCHISPTool_CMD/Linux/driver/
make clean
make

Note that you are not required to run make install to install the kernel module if you just want to use the tool sparingly.

Load the compiled kernel module into the running kernel

sudo insmod ch37x.ko

Close the B0 header pins using a 2.54" jumper.

By closing the B0 header, the CH32V30xVCT6 MCU will enter ISP programming mode once powered on.

Connect the RISKYMSX cartridge to your computer using a USB cable.

The required USB cable needs a Type A male termination on one side to connect to the RISKYMSX cartridge, and another USB male connector suitable for your computer on the other end. If your computer has USB Type A ports, a USB Type A to USB Type A cable should be fine.

Check that the device node for the CH32V30xVCT6 in ISP programming node appears on your system

ls -la /dev/ch3*

crw------- 1 root root 180, 2 Jun  3 15:58 /dev/ch37x2

Run the WCHISPTool_CMD tool to program the RISKYMSX cartridge firmware

The following command assumes that both the WCHISPTool_CMD and RISKYMSX github repository directories are available under the current working directory, and that the RISKYMSX firmware binary file has been copied to the current directory under the name RISKYMSXCART.bin.

sudo WCHISPTool_CMD/Linux/bin/x64/WCHISPTool_CMD -p /dev/ch37x2 -f RISKYMSXCART.bin -o program -c RISKYMSX/prog/CONFIG.INI -r 1

where:

/dev/ch37x2 is the device node for your CH32V30x as it appears on your system
RISKYMSXCART.bin is the firmware binary file provided in the github repository (or the one built by you if you rebuilt the project)
RISKYMSX/prog/CONFIG.INI is the configuration file for the WCHISPTool_CMD also provided in the github repository

When the programming completes successfully you will see an output similar to this one:

=====ISP_Command_Tool=====

TOOL VERSION:  V3.70

p:/dev/ch37x2
b:0
v:0
c:RISKYMSX/prog/CONFIG.INI
o:0
f:RISKYMSXCART.bin
r:1

{"Device":"/dev/ch37x2","Status":"Ready"}
{"Device":"/dev/ch37x2", "Status":"Programming", "Progress":100%} 
{"Device":/dev/ch37x2", "Status":"Finished", "Code":0,"Message":"Succeed"}

Building the firmware on Windows

TBE

Programming the firmware

You need WCHISPTool from https://wch-ic.com/ website.

USB A - USB A Cable or Serial adapter

Close jumper B0.
Connect RISKY MSX to PC using USB A to USB A cable or serial.
For USB A Cable Dnld Port should change to USB.
For serial select your serial device COM
Select Chip Series - CH32V30x
Chip Model : CH32V303VCT6
Select Object File1 and pick up firmware .bin.
Under Chip Config select Chip Memory Allocation RAMX 32KB + ROM 288KB
Click Deprotect
Click Download

Cartridge Operation

The RISKYMSX cartridge can operate in two different modes once programmed with the RISKYMSX firmware.

Make sure the MSX computer is powered off before inserting or removing the RISKYMSX cartridge or any other cartridge.

Warning

All cartridge headers (B0, DAT/CLK and RX/TX) must be unconnected for cartridge operation when inserted into a MSX computer.

Normal Mode

In Normal mode the RISKYMSX cartridge behaves as a ROM cartridge once a ROM has been flashed.

Just insert the RISKYMSX cartridge and enjoy the already flashed ROM.

ROM Flashing Mode

In ROM Flashing Mode a ROM file residing in a USB drive can be flashed to the RISKYMSX cartridge for later use in Normal Mode.

Make sure the MSX computer is powered off
Insert the RISKYMSX cartridge
Press and hold the GRAPH key on the MSX computer keyboard and power on the MSX computer.

You can release the GRAPH key once you see the Flash LED turn on.

If no USB drive is connected to the RISKYMSX cartridge, the "Insert USB" screen will appear.

You will need to connect a FAT-formatted USB drive to continue the ROM flashing procedure.

Once that is done, the RISKYMSX will try first to auto-flash a ROM before switching to manually flashing ROMs.

Auto-flashing ROMs

The RISKYMSX firmware will automatically flash the first file found on the root directory of the connected FAT-formatted USB drive matching one of the special filenames for ROM auto-flashing, according to the following table. A mapper will be automatically assigned based on the filename detected.

Mapper	filename
16KB ROM	cart.r16
32KB ROM	cart.r32
KONAMI without SSC	cart.ko4
KONAMI with SSC(EN)	cart.ko5
KONAMI with SSC(DIS)	cart.kd5
ASCII8k	cart.a8k
ASCII16k	cart.a16
NEO16	cart.n16
NEO8	cart.n8k

So for example, to automatically flash F1SPIRIT.ROM, which is a KONAMI with SCC game, the F1SPIRIT.ROM file can be copied to the root of the USB drive using the filename cart.ko5, and then follow the mentioned procedure.

After flashing the ROM file, the RISKYMSX will automatically reboot the MSX computer and the ROM will load.

Note that if several files matching the auto-flashing filenames are found on the USB drive, only the file that causes the first match in the above table order will be flashed.

Manually flashing ROMs

If the connected FAT-formatted USB drive contains no files matching the auto-flashing filenames, the RISKYMSX firmware will display the interactive ROM flashing menu.

Use the following keys to interact with the file menu screen:

Up, Down: move up or down the red arrow cursor across the available files in the current page
Right: go to the next page (if more files are available to list)
Left: go to the previous page (if any pagination was done before)
Return: select a file for flashing
Esc: go to the previous screen, or reload the file list on the root directory
1: show the current flashed ROM file and mapper type, and optionally change the mapper type
Backspace: go to the previous directory level on the file manu

Useful tips:

The bottom of the file menu screen shows the keys that are available to use at any moment
You can always hot-swap the USB drive while in the file menu, and once a new USB drive is connected you need to press Esc to refresh the file contents
DO NOT navigate or select files while you have disconnected a USB drive without pressing Esc first
If you flash a ROM with the wrong mapper type, you can change the mapper type easily, without reflashing the ROM again, by pressing 1

When a ROM file is selected by pressing the Return key the mapper selection screen shows up.

Select the correct mapper type for the selected ROM file and press Return to start flashing the ROM.

Once the flashing process finishes the RISKYMSX firmware will reboot the MSX computer and the flashed ROM will load.

General troubleshooting.

If no LEDS are on during power up, You have issues with power lines or shorts. If during power up and button pressed no LEDs are flashing your MPU doesn't start at all. If you can download ROM to cart but MSX doesn't load data from cart then you have issues wih soldering of ADDRESS, DATA or BUS lines.

Compatibility

The RISKYMSX cartridge has been tested on the following MSX computers:

Model	RISKYMSX
Sony MSX HB-101P	OK
Sony MSX HB-501F	OK
Toshiba MSX HX-10	OK
Philips MSX2 VG-8235	OK
Panasonic MSX2+ FS-A1WSX	OK
Omega MSX2+	OK
Tides Rider MSX2+	OK
TFMSX Rev 1 MSX2+	OK
TFMSX Rev 2 MSX2+	OK
MSXVR	`NOK`

Other MSX compatible computers will probably work too, but have not been specifically tested.

Enclosures

Acrylic Enclosure

You can complete your RISKYMSX cartridge with an acrylic enclosure suitable for all RISKYMSX cartridge board revisions.

3D Printed Enclosure

Another option for closing your RISKY MSX Cartridge is following project Enclosure

Acknowledgments

The following people contributed to this project and supported me with technical aspects of this project.

Terrible Fire
cnlohr
NYYRIKKI
Aoineko
BG Ollie
MadHacker

Testing team:

PhilC
Higgy
ahmsx
Hee-Bong An

Thank you very much for your support.

Name		Name	Last commit message	Last commit date
Latest commit History 106 Commits
MSXTerminal		MSXTerminal
board		board
firmware		firmware
images		images
prog		prog
wchisptool		wchisptool
.gitignore		.gitignore
README.md		README.md
RISKYMSXCART_v3.3.0.bin		RISKYMSXCART_v3.3.0.bin
RISKYMSXCart.csv		RISKYMSXCart.csv
RiskyMSXv21PCB.zip		RiskyMSXv21PCB.zip

arkadiuszmakarenko/RISKYMSX

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RISKYMSX

Main Features

Hardware

Revisions

Rev 2.1 (current)

Rev 2 (obsolete)

Rev 1 (obsolete)

Firmware

Building a RISKYMSX cartridge

PCB

Suggested tools

Component shopping list

Assembling the hardware

Building the firmware on Linux

Cloning the RISKYMSX github repository

Installing the MounRiverStudio IDE

Launching the MounRiverStudio IDE

Generating the firmware file

Programming the firmware

Programming the firmware using the WCH-LinkE programmer

Programming the firmware using the WCHISPTool_CMD tool

Building the firmware on Windows

Programming the firmware

USB A - USB A Cable or Serial adapter

Cartridge Operation

Normal Mode

ROM Flashing Mode

Auto-flashing ROMs

Manually flashing ROMs

General troubleshooting.

Compatibility

Enclosures

Acrylic Enclosure

3D Printed Enclosure

Acknowledgments

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