Analogue Duo User manual

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Analogue Duo
User Guide
analogue.co V1.0 Dec.2023

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Congratulations
on becoming an
Analogue Duo
owner.
A tribute to virtually the entire NEC video game
ecosystem.
Out of the box Duo is compatible with
TurboGrafx-16, PCE, SuperGrafx & CD-ROM²
game libraries. Including native support without
the need for any system cards and beyond.
Sync 8BitDo Bluetooth or 2.4g controllers directly
to Duo. In addition, Duo supports virtually all 1st
party controllers. Up to 5 player support (including
miniDIN or Multitap devices). You can connect
controllers directly via wired USB, too.
Update your Duo to the latest rmware at
analogue.co.
What’s in the box
— Analogue Duo
— USB-C Power Supply
— HDMI cable
— USB-C cable
— Quick-Start Guide

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VOLUME WHEEL
CONTROLLER LED
PAIRING BUTTON
MINIDIN
EJECT CD

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Getting Started
Connect the power supply to the USB-C cable and
the USB-C cable to Duo. Plug the power supply
into a standard AC outlet. A dedicated SD card is
required for game saves and full OS features.
Duo has two USB ports, which can connect and
charge controllers as well as a miniDIN connector
supporting original controllers and devices. Duo can
connect with up to four Bluetooth controllers, two
8BitDo 2.4G controllers or two USB controllers. Up
to four controllers can be connected simultaneously
using any combination of connections. A fth
controller can be connected via the miniDIN or by
using an original Multitap device.
When rst using Duo it will automatically search
for a wireless controller to pair with indicated by a
ashing white controller LED. Once a controller is
paired or connected you can remotely power on
Duo without having to press the Duo power button
by simply powering on the controller (typically with
the Start or Home button).
Use the included USB-C cable and Power Supply
Caution: Do not insert DVD, Blu-ray or damaged
discs into Duo. These are not supported and may
cause undesired behavior.
Upgrading Duo OS and Firmware
Update Duo OS by visiting
analogue.co/support/duo to get the most recent
release. You will see an update bar on your display
during the two stage update process. If the update
is interrupted, restart by powering o and powering
on Duo.
Power LED Status
— LED Solid White Power is On
— LED Blinking White CD Ejecting
— LED Breathing White CD Reading
— LED Solid Purple System Sleep
— LED Flashing Yellow Updating OS
Controller LED Status
— LED Blinking White Pairing Ready
— LED Solid White Connected
Ports and Indicators
Power Button
Press to power on or wake Duo. Hold for 2 seconds
to power o Duo.
Eject Button
Press to eject the CD.
Pairing Button
Press to pair a wireless controller.
Controller LEDs
Indicate whether Player 1 - 4 is connected or
pairing with Duo. There is no indication for original
controllers connected via the miniDIN.
HDMI Port
Output video and audio from Analogue Duo
to your display or receiver.
USB Ports x 2
Connect directly or charge your controllers.
Power Port
Insert the USB-C Cable and connect it to the
USB-C Power Supply to power Duo.
SD Card Slot
Used for updating Duo, game saves, Memories and
Library support (up to 1TB).
Headphone Jack
Connect headphones or external speakers via the
3.5mm stereo output jack.
Volume Wheel
Rotate to adjust the volume level for the headphone
jack.

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Compatible Media
— Ocial/Unlicensed/Homebrew NEC-
manufactured PCE HuCards and TurboChips
— Ocial SuperGrafx HuCards
— Ocial/Unlicensed/Homebrew PCE/
TurboGrafx/Duo CD-ROMs
— NEC System Cards & Games Express Green
& Blue Cards
— CD audio & CD+G playback with appropriate
System Card
Compatible Original Peripherals
— PCE 2-button & 6-button Controllers &
Multitaps
— TurboGrafx-16 Controllers & TurboTap with
DIN to mini-DIN Converter
— Memory Base 128
— PCE Mouse
— Coconuts Pachinko Controller
— Dempa XE-1AP Analog Controller with X-HE3
converter
Original Controllers and Peripherals
Duo supports original controllers via the miniDIN
connector. Additionally, an original Multitap device
can be connected here for up to ve player support
with original controllers. Duo does not support
USB hubs as well as mixing a Multitap device with
wireless or USB controllers. Some special models of
original controllers may require using “Passthrough
Mode,” which can be enabled via the OS menu
Settings>Duo>System>Input.
Wired Controllers
Plug any hardwired USB controller that Duo
supports into a USB port and it will instantly
connect to Duo. You can also use and charge
any supported wireless controller as a wired USB
controller by connecting it with a USB cable.
Game Saves and SD Cards
Duo natively supports features that were originally
only possible with an array of external hardware
and accessories (more details on page 8). Duo
requires a dedicated SD card (FAT32 or exFAT up to
1TB) for game saves and full feature support.
OS Menu
Play HuCard
Run a HuCard in the card slot (only appears if a
HuCard is inserted).
Play CD
Run a CD-ROM in the CD drive (only appears if a
CD is inserted).
Library (requires SD card)
View your game collection and time played.
Memories (requires SD card)
Access HuCard Save States (coming in a future OS
update) & Screenshots.
Controllers
Pair supported Bluetooth and 2.4g controllers,
change controller order, and reset pairings.
Settings
Adjust Duo and system specic settings.
About
View information about Duo including OS version
and the changelog.

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Settings – Duo – HDMI
Sync Mode
Buering modes on Duo support the conversion of
the system video signal to modern HDMI video.
Zero Delay (60Hz) – Provides lag-free HDMI output.
This mode will not work with 50Hz HDMI modes.
Fully Buered – Buers a full frame in order to
maintain sync with the display’s native refresh rate
(60Hz or 50Hz) and eliminates tearing.
Single Buered – Buers a portion of a frame with
reduced latency relative to Fully Buered mode, but
will show a mismatched frame retrace line (tearing)
visible once every several seconds.
Settings – Duo – Headphones
High Impedance – Enable if your headphone
impedance is rated in hundreds of ohms. Note that
this will noticeably increase the volume.
Settings – Duo – Eject CD
Ejects the CD. This option is unavailable if a CD is
not inserted.
Settings – Duo – Global Reset
Global Reset will restore factory settings and erase
all controller pairings from Duo if conrmed. Library
and Memories will not be aected.
Duo – System – Display Modes
Analogue TG16
Analogue pixel perfect display mode.
Sharpness – Set from 0-3 progressively increasing
sharpness with 3 providing razor-sharp pixels.
Size – Adjust the screen resolution as you like
from as low as 512×224 to 1920×1200. The default
provides a full screen 4:3 aspect ratio. Quickly set
a vertical integer scale and disable Y interpolation
(sharpness must be set to 3) by selecting 3x, 4x
or 5x and can be used in combination with Show
Overscan.
CRT Trinitron
A recreation of Sony’s line of aperture-grille-
based CRTs. This Original Display Mode is not
based on a hyper specic display model but on
the fundamental underlying technology of Sony’s
Trinitron line of CRTs.
Med vs. Fine Aperture Grille – Adjusts the
phosphor density simulating dierent TVL values.
Soft vs. Hard Edges – Adjusts scanline horizontal
transitions (slew rate) for a natural looking blending
of dithered art or a sharper appearance.
Heavy Scanlines – Enhances scanline depth.
Turbo Express
Recreates the original LCD screen of the Turbo
Express Handheld Console.
PC Engine LT
Recreates the original LCD screen of the PCE LT
Portable Console.
Duo – System – Video
Color Palettes
RGB – Native RGB color output pulled directly from
the PCE VDP.
Composite – Recreates the palette of an original
PCE composite output.
Show Overscan
When enabled the display format will show
graphics normally hidden by a CRT bezel.
Duo – System – Audio
HuCard Audio
Enables extra audio generated from a HuCard, such
as CD (stereo) and ADPCM, and to set its level
relative to the volume generated by Duo.
Duo – System – Region
By default Duo auto detects the game region.
Manually set the region by selecting USA or Japan.
Remember to set the region appropriate for the
game if using Manual selection.

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Duo – System – SuperGrafx
By default Duo auto detects SuperGrafx games and
enhancements. If set manually during game play,
restart the game for changes to take eect. Note
you can use this option to downgrade or upgrade
certain games with SuperGrafx support.
Duo – System – CD-ROM²
By default Duo auto detects appropriate versions of
CD-ROM² for each respective game. If set manually
during game play, restart the game for changes
to take eect. Note you may use this option to
enable Arcade CD-ROM² enhancements supported
by certain Super CD-ROM² games and some
peripherals may require disabling CD-ROM².
Duo – System – Input
By default Duo auto detects support for 2-button or
6-button controllers. Note most PCE games are not
compatible with 6-button controllers when set to
6-button mode.
Passthrough Mode
Required when using special original miniDIN
peripherals like the Memory Base 128, PCE Mouse,
Pachinko controller and the Micomsoft XE-1AP
analog stick. It is recommended for correct turbo
button behavior of some original PCE controllers.
After starting a game OS Menu can not be
accessed or used while using passthrough mode.
Duo – System – Reset to Defaults
Resets all System settings to their defaults. All
changes to these settings will be lost.
Settings – Analogue OS
Startup Action
OS Menu – Duo lands into Analogue OS menu
upon power-up.
HuCard/CD – Duo plays an inserted HuCard rst
on power-up, followed by an inserted CD if a
Hucard is not present.
CD/HuCard – Duo plays an inserted CD on
power-up, followed by an inserted HuCard if a CD
is not present.
Set Date/Time
Set the date and time used for Library and
Memories.
Settings – Library
Auto add to Library – Analogue OS adds games to
Library every time you play a new game.
Library Browser – View all games in archival detail.
Settings – Memories (coming in a future OS
update)
Enable Quick Load – Quick Load allows you to
easily load the most recently used Save State during
gameplay without opening the Menu. To use Quick
Load during gameplay hold Home then press Down
on the D-pad. With original controllers hold Down
on the D-pad then press Select.
Enable Quick Menu – Quick Menu allows you to
easily access your Memories list during gameplay
without navigating the Menu. To use Quick Menu
during gameplay hold Select or Home and Down on
the D-pad together for 1 second.
Thumbnail View – A thumbnail image of Save State
will be shown in the menu.
Sleep and Wake (coming in a future OS update)
Sleep – Quickly press Duo Power Button to
suspend HuCard game play and put Duo into sleep
mode. A purple Power LED indicates Duo is in Sleep
Mode.
Wake – Quickly press Duo Power Button to Wake
Duo and resume HuCard game play where you left
o.
Save States (coming in a future OS update)
Save States allow saving and loading virtually any
moment of HuCard game play even if Duo has
been powered o and on again. Past Save States
are ltered by the game currently running. Create
Save States by holding Home then pressing Up on
the D-pad. With original controllers hold Up on the
D-pad then press Select.

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Using Ten no Koe Bank (天の声バンク)
Originally, HuCard games could only save by
implementing passwords. The CD-ROM² upgrade
and later PCE Duo systems with a built in Super
CD-ROM² added a dedicated 2KiB RAM for saving
CD games and certain HuCard games. HuCard-only
systems could still save to this memory by attaching
a Ten no Koe 2 (天の声2) or Backup Booster backup
device.
Normally, games had to contend with other games
for storage space within this 2KiB RAM. Analogue
Duo provides an exclusive 2KiB to any game which
accesses this RAM and will save backups of this
RAM to SD card.
If you wish to use a Ten no Koe Bank (天の声バンク)
card to transfer backup RAM data from Analogue
Duo to an original system, follow this procedure:
1. Insert the Ten no Koe Bank card in Duo, then
Play Game followed by Quit Game.
2. Remove the SD Card from Duo, insert it into
a PC or Mac and navigate to \Saves.
3. Note the name given to the save le for the
Ten no Koe Bank card and delete the le.
4. Find the save le of the game of the game
you want to transfer to the Ten no Koe Bank card
and rename the le to the lename given for the
Ten no Koe Bank card.
5. Reinsert the SD card in Duo, play the Ten no
Koe Bank card again and copy the Backup RAM to
the Ten no Koe Bank card using the card’s built-in
copying program.
Note that Ten no Koe Bank cards contain battery
backed RAM and the original batteries may be
expired preventing normal function.
Using Memory Base 128
Alternatively, Memory Base 128 has user-
replaceable batteries, but unlike the Ten no Koe
Bank card requires Super CD-ROM² or Arcade
CD-ROM² enhanced systems on both ends of the
transfer. The Memory Base 128 can backup the
complete contents of the internal 2KiB save RAM.
The procedure is similar:
1. Find the name of the save le of the game
whose save content you wish to transfer (“game 1”).
2. Find the name of the save le of the game
which will perform the transfer (“game 2”).
3. Relocate the save le for game 2 temporarily
and rename the game save of game 1 to the name of
game 2.
4. Play game 2 and run its copying program.
Note that not all games may allow the transfer
of the entire internal 2K backup memory to the
Memory Base 128’s memory and may only allow
their own games to be transferred. Private eye dol is
one game which allows a full backup of the internal
memory to be made.
Using Original System Cards
Analogue Duo supports original NEC System Cards
as well as Games Express Green & Blue Cards.
Supported features include CD audio, CD+G
playback, and the original CD BIOS versions.
1. Insert the original System Card into the
HuCard slot. If recognized, the OS menu will
display “Using System Card”.
2. Insert and play the CD. The original System
Card will be used automatically.

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Supported Controllers – Duo OS v1.0
• Switch Pro (and variants) • 2.4g N30 • 8BitDo Pro 2 • 8BitDo N30 Pro
• Switch Joycon • 2.4g N30 (Noir) • 8BitDo Zero 2 • 8BitDo N30 Pro 2
• WiiU Pro • 2.4g SN30 • 8BitDo Lite • 8BitDo Arcade
• Wiimote • 2.4g SN30 Classic • 8BitDo Lite 2 (BT & USB only)
• Stadia • 2.4g SF30 • 8BitDo M30 • 8BitDo NeoGeo
• Xbox 360 & Xbox One • 2.4g M30 • 8BitDo SN30 • 8BitDo Micro
• PS3, PS4 & PS5 • 2.4g M30 Classic • 8BitDo SN30 Pro
• Turbo mini • 2.4g PCE • 8BitDo SN30 Pro+
• KingKong 2 Pro
Pairing controllers to Duo
1. Press the pairing button on the left side of Duo (required for 2.4g controllers) or select “Pair Controller”
from the OS menu. A Controller LED indicator will start to blink. Duo is now in Pairing mode.
2. Put your controller in pairing mode by holding the pairing button.
3. Your controller will pair to Duo. Controller LED indicator will become solid when a controller is paired
or wired controller connected to a USB port.
4. Pair additional controllers by repeating the above steps.
A 5th controller can be connected via the miniDIN or by using an original Multitap device. A controller
connected via the miniDIN will always be assigned to Player 1. Duo does not support USB hubs as well as
mixing a Multitap device with wireless or USB controllers.
8BitDo Bluetooth controllers need to be in X-Input mode before pairing.
8BitDo 2.4g controllers require specic rmware to work with Duo. This will disable compatibility with
included original and USB controller port receivers unless reverted. The rmware update can be reverted
by the same method indicated to update the rmware. Please visit support.8bitdo.com/analogue/Dock for
rmware and instructions.
Force Disc Eject
Method 1: Unplug USB power from Duo along with any connected USB devices then plug power back in.
Power on Duo while repeatedly pressing the CD eject button for 3-4 seconds to eject the disc.
Method 2: On the root of your SD card create a blank .txt le and name it “duo_eject.txt“ (case sensitive).
Unplug USB power from Duo along with any connected USB devices. Insert the SD card with the new le.
Plug in USB power and power on Duo to eject the disc automatically. If the disc does not eject on the rst
try please try again by repeating the above steps. Be sure to use the included USB-C cable and Power
Supply. Delete the newly created le from the SD card before continuing to use Duo.
Factory Resetting Duo
Resetting will restore factory settings and erase all controller pairings from the Duo. Library and Memories
will not be aected. Select and conrm “Global Reset” from OS menu Settings>Duo.
Manually Resetting Controller Pairings: Plug the USB-C power into Duo while holding the pairing button.
Wait until the Controller LEDs begin to ash green and release the pairing button before the green LEDs
turn o. If successful, all four Controller LEDs will ash red.

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Controller Mappings
Main system(s) default button mapping across compatible game controllers.
All 8BitDo Bluetooth controllers need to be in X-Input mode before pairing.
Menu I II RUN SE
8BitDo Controllers
Wireless 2.4g
N30 Home A B ST SE
N30 Noir Home A B ST SE
SN30 ↓ + SE A B ST SE
SN30 Classic ↓ + SE A B ST SE
SF30 ↓ + SE A B ST SE
M30 Heart B A ST -
M30 Classic Heart B A ST -
PCE Heart I II RN SE
Wireless Bluetooth
Pro 2 Heart A B ST SE
Zero 2 ↓ + SE A B ST SE
Lite Heart A B + -
Lite 2 Heart A B + -
M30 Heart B A ST -
SN30 ↓ + SE A B ST SE
SN30 Pro Heart A B ST SE
SN30 Pro+ Heart A B ST SE
N30 Pro Home A B ST SE
N30 Pro 2 Home A B ST SE
Arcade Stick Heart A B ST SE
NeoGeo Heart B A ST SE
Micro Heart A B + -
Menu I II RUN SE
Non 8BitDo Controllers
Wired
Xbox 360 Xbox B A ST BK
Turbo mini ↓ + SE I II RN SE
Wireless
Switch Pro Home A B + -
Switch Joycon Home X A + / - Joy in
WiiU Pro Home A B + -
Wiimote Home 2 1 + -
Stadia Stadia B A ≡...
PS3 PS O X ST SE
PS4 PS O X Opt. Share
PS5 PS O X Opt. Share
Xbox One Xbox B A Menu View
KingKing Pro 2 Home A B + -

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Analogue.
Duo.
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