Sat, 30 May 2026 18:52:03 +0000 <![CDATA[Populairste aanbiedingen van Serdashop]]> <![CDATA[DB15MIDI]]> This interface features :
  • DB15 connector to plug on your soundcard
  • 2 x MIDI OUT DIN connector for connecting MIDI modules

kaide79 designed a 3d print enclosure. You can download the STL files here.

DB15MIDI demo by Phil's Computerlab :

 ]]> Thu, 08 Aug 2024 10:56:33 +0000 <![CDATA[Waveblaster Trio Bundle]]> X2GS TE, S2 and McFly]]> Sun, 07 Sep 2025 04:30:17 +0000 <![CDATA[CVX4 Vogons Tuning Edition]]> Parallel port soundcard with high quality tuning options, compatible with Covox Speech Thing
Line out connection, intended to connect to amplified speakers

Optional Dual Color high quality enclosure.

No compromises, we wanted to make the best possible covox clone, and did not spare effort or expenses :
after building 3 prototype generations (CVX1, CVX2, CVX3), this is now the final version :
CVX4 uses very high precision 0.1% all same value resistors, and a reverse engineered schematic (based on a real original covox) for excellent 8 bit sound. Other DIY clones use 1% or 5% resistors, different schematic, ...you can compare... CVX4 sounds way better...

Added low pass tuning options to simulate speaker effect to your own taste.

Dip switch legend :
dips 1-5 : low pass filter
1: 1nF      : significant low pass filter
2: 4.7nF   : heavier low pass filter
3: 10 nF   : very heavy low pass filter
4 : 0.1nF  : very subtle low pass filter
5 : 0.47nF : subtle low pass filter
dip 6-7 : extra volume divider :
6 :    56k    (1/2R) : 
7 :    27k    (1/4R)
dip 8 
8 :    bypass coupling capacitor
 
Dip settings for authentic Covox' sound : dip 7 on, other dips off.

Example DIP switch settings :
DIP SWITCH Position :
(1-2-3-4-5-6-7-8)		 Result :
E-D-D-D-D-X-X-X low pass filter set medium
D-E-D-D-D-X-X-X low pass filter set heavy
D-D-E-D-D-X-X-X low pass filter set very heavy
D-D-D-E-D-X-X-X low pass filter set very low
D-D-D-D-E-X-X-X low pass filter set low
X-X-X-X-X-E-D-X extra volume divider set half
X-X-X-X-X-D-E-X extra volume divider set a quarter
X-X-X-X-X-X-X-E bypass decoupling capacitor
Legend:    E = (e)nabled or on; D = (d)isabled or off; X = doesn't matter


Review and detailed development history by Scali here : https://scalibq.wordpress.com/2017/11/28/the-covox-years/

CVX4 soundcloud demos here : https://soundcloud.com/user-919839499/sets/cvx4-mod-playback-with



Enclosure assembly tip :   The top and bottom are printed to tight tolerances, for a good fit. When assembling, don't use excessive force.
Assembly is easy, following these steps :
- put the top lid in front of you, so that you can read the 'CVX4' text
- tilt the lid, and fit the right side notch first.
- after this first, you can gently move the lid downwards, while pulling it to the right, and fit the other notches.



CVX4 playing a song using CVXPlay in DOS :



Fasttracker II through CVX4

CVX4 in games : Electro Man 


Review/Demo by Phil's computerlab:


Featured in this 8 bit guy demo :
 

CVX4 Modmaster Demo by FreddyV Retro Zone

 
Combining 2 x CVX4 for Stereo support - Retro Erik:
 

LPT devices comparison by Retro Erik:
]]> Thu, 08 Aug 2024 10:42:19 +0000 <![CDATA[MB-32 : MT-32 style music box]]> High quality 3D printed enclosure with custom limited edition music box mechanism :

Now with "MB-32 Manual Mode" display sticker !

2 song versions available :
- "Larry" : Leisure Suit Larry inspired song
- "Monkey" : Monkey Island inspired song

Dimensions of the MB-32 enclosure : 52.5mm (width) x 51mm (depth) x 25.5mm (height)

Dimensions of the Mechanism :
MB-32 mechanism drawing
 ]]> Thu, 08 Aug 2024 11:06:47 +0000 <![CDATA[Turbo Display - Triple McDigit edition]]> New ! Available now ! Thanks for supporting my project !

Draft version of turbo display user manual available here. (will be extended later)

Turbo display and control : Triple McDigit edition
  • 3.5" drive bay panel or 5.25" drive bay panel options, in normal (bright), 'dimmed green tape mod' and 'stealth' design. 
  • standard available in 'computer beige' and black panel color. ask me if you need specific tape/print color combo.
  • allows to switch between turbo and normal speed, on mainboard that have turbo connection
  • dip switch configurable speed display for both speeds, 3 digits, with dots
  • includes 40cm connection cable  (option to change to 60cm)
3.5 inch panel:



5.25" panel - 'normal bright' version : 

5.25" panel, 'green tape mod' option : (you can also mod yourself, it made is using this tape on the display)

5.25" stealth version :

5.25" black version (turned off) :




Connections : 

Dip switch configuration :

Dot configuration : 

Unboxing video by LGR :


Turbo display video by Retro Erik :

 ]]> Sun, 01 Jun 2025 15:11:19 +0000 <![CDATA[Tiny Waveblasters Bundle]]> - McFly Purple Fly Edition
- Red DreamBlaster S2
- Chill n Phil adapter, fully soldered and tested

 ]]> Thu, 08 Aug 2024 10:47:46 +0000 <![CDATA[4 x HDD Clicker with enclosure - LAN Party bundle]]> - HDD Clicker PCB
- HDD Clicker high quality 3d printed enclosure
- 30 cm HDD LED cable
- velcro mounting pads

Option to choose : 
- more silent version (sticker on buzzer)
- loud and clicky version (no sticker on buzzer) 

 ]]> Sun, 07 Sep 2025 04:38:25 +0000 <![CDATA[Dreamblaster S2 General MIDI Module Bundle]]> Limited Edition Kit :
Create your own general MIDI module.
Low cost, small size, low weight, low power. 
High quality stereo retro sound.
Very robust enclosure.

Follow these simple instructions to assemble your kit.
Bundle consists of :
  • DreamBlaster Synth S2 module
  • DreamFace Interface PCB
  • Corresponding Enclosure kit with Front and Rear Panel
No soldering required. Only 1 small screwdriver needed,
to assemble with 8 screws.

Dimensions (assembled) : 89mmx51mmx33mm
Weight :  70 g

External MIDI module :
  • Interfaces :
    • MIDI IN
    • Stereo Line Out (high end gold plated RCA connectors)
    • DC 9V barrel jack (+ inside)
  • 64-voice polyphony (without effects)
  • 38-voice polyphony + effects
  • General MIDI compatible effects
  • 4-band stereo equalizer
  • High quality, compact size
  • Low power consumption

 ]]> Thu, 08 Aug 2024 11:11:03 +0000 <![CDATA[picovox]]> picovox available now !!
picovox is a sound card for parallel port, that can emulate several sound devices :
  • Covox
  • Stereo-On-1
  • FTL Sound Adapter
  • Disney Sound Source
  • OPL2LPT
  • OPL3LPT
  • TNDLPT
  • CMSLPT
The picovox project is designed by Jan Samek. 
This serdaco version of the PCB is developed in special agreement with Jan Samek.

picovox PCB specs :
  • dimensions :  54mm x 47mm
  • parallel port connector
  • USB-C power connector
  • 3.5mm stereo line out 
  • optional 3d printed high quality enclosure
For up to date information, check out the pivocox open source project here

You can select the emulated device using pcvx.com

How do I use it?

You just need to plug your picovox into any LPT port of your computer, plug in the power to the USB-C connector and your favorite pair of speakers into the audio jack. In case of Covox/FTL/DSS/Stereo-On-1 you can use them right out of the box. In case of OPL2LPT, TNDLPT and CMSLPT, you can use them in the same way as the listed devices; either with games with native support, or load their drivers/patches. You can switch between modes via a tool for DOS called pcvx.com :

How to use PCVX.COM ?

You have to copy the pcvx.com file to your DOS computer.

You can download the latest version from RELEASES.

The usage is as follows:

PCVX [PORT] MODE [DEVICE]

PORT

You may specify the port by using LPT1, LPT2, or LPT3, depending on where your picovox is connected. If your picovox is connected to an LPT port at a non-standard address, you can use ADDR0x378 where you replace 0x378 with your base address (where data pins are set). The status register is base + 1, and the control register is base + 2.
 

MODE

Option Device Description
INIT ❌ Initializes the port for picovox use.
STATUS ❌ Prints the status of the picovox device.
SET ✅ Sets picovox to the specified emulated device.
HELP ❌ Prints available commands with descriptions and use examples.
LIST ❌ Prints all the supported devices you can use in DEVICE.

DEVICE

Mandatory argument for SET. Specifies the emulated device.

 
Option Description
COVOX Covox Speech Thing/Intersound MDO/Generic 8-bit DAC
OPL2 OPL2LPT, Adlib compatibility with ADLiPT/adpatch
OPL3 OPL3LPT, Adlib/SoundBlaster compatibility with ADLiPT/adpatch
CMS CMSLPT, GameBlaster compatibility with CMSLPT
TND TNDLPT, Tandy/PCjr compatibility with TNDLPT
DSS The Disney Sound Source
STEREO Stereo-on-1 by Mark J. Cox.
FTL FTL Sound Adapter supported by Dungeon Master.
SID SIDLPT, Innovation SSI-2001 support with patches. Not implemented yet
MP3 MP3 decoder using specialized program. Not implemented yet

Example usage

PCVX LPT1 SET COVOX – Sets picovox on LPT1 to Covox mode.

PCVX ADDR0x3E8 INIT – Initializes picovox on address 0x3E8.

PCVX STATUS – Shows current status of picovox.

PCVX HELP – Prints help.



 ]]> Sat, 30 May 2026 18:52:03 +0000 <![CDATA[Simmconn Bundle : Gold + Value]]>
  • SimmConn card Gold edition
  • SimmConn card Value edition
    • ]]>     Thu, 08 Aug 2024 10:25:36 +0000     <![CDATA[X3MB]]> This is a General MIDI Synthesizer module, with a special looking a 'brick compatible' Buran enclosure, for all you 80's loving geeks out there. It is also available in a 'classic' enclosure, for the more serious applications.
    And finally also as PCB only, for DIY purposes..

    This synthesizer features a new 50 mbyte soundbank, volume balanced to replace a Sound Canvas 55 in DOS games. 
    X3MB can be used for many applications : music production, connecting a midi keyboard, DOS gaming, ...

    Also check the hackaday page for more information : 
    https://hackaday.io/project/161817-buran-general-midi-synthesizer

    This synth is 100% compatible with DreamBlaster X2

    - Dream 5000 series synth chip with 81 voices polyphony, high quality effects engine
    - Super low latency <1ms
    - 64mbyte flash for soundbank data
    - USB MIDI in (Class compliant midi device, works on windows XP and higher, without drivers)
    - stereo line out using a high quality 24 bit DAC    
    - Preloaded with a high quality 16 megabyte Dream General MIDI soundbank , or optional different soundbank (depending on choice)
    - Advanced MIDI commands spec available.
    - DreamBlaster Preset editor / USB uploader tool for advanced customization/tweaking.

    Compatible with X2 and X3M tools and soundbanks :  http://serdaco.com/downloads/
    More unofficial soundbanks available here : https://www.vogons.org/viewtopic.php?f=62&t=65873
    Find information here on how to convert your soundbanks using Awave Studio.

    The Buran enclosure edition was launched on Nov 15th 2018, to commemorate the legendary Buran launch on nov 15th 1988.

    Review by Phils Computerlab :

    Buran review by DOS Nostalgia :

    Final Fantasy III - Forever Rachel on X3MB Buran (Tamás Kulik channel)
    ]]>     Sun, 19 Oct 2025 13:36:52 +0000     <![CDATA[5 x PS2TOSERIAL LAN Party Bundle]]> 5 x PS2TOSERIAL with cover]]> Thu, 08 Aug 2024 10:26:15 +0000 <![CDATA[5 x HDD Clicker PCB - LAN Party Bundle ]]> - HDD Clicker PCB
    - 30cm HDD LED cable

    Option to choose : 
    - more silent version (sticker on buzzer)
    - loud and clicky version (no sticker on buzzer) 

     ]]>     Sun, 07 Sep 2025 04:44:15 +0000     <![CDATA[CMSLPT]]> CMSLPT TSR to use this with some Creative Music System and Game Blaster games.
    New 2023 revision with improved filtering for even better sound.

    CMSLPT Test program and TSR can be found here 

    CMSLPT silpheed demo :

    CMSLPT demo by Retro Erik :


    LPT devices comparison by Retro Erik :

     ]]>     Thu, 08 Aug 2024 10:59:06 +0000     <![CDATA[X3MA : General MIDI module + USB Audio Interface]]>
    Midi + USB Sound Module : supports hardware wavetable synthesis + audio playback.
    - Dream MIDI synth (54 voices polyphonic, 64 mbyte flash, compatible with X2 banks)
    - 24 bit high quality DAC, configured at 48 Khz playback
    - USB audio playback, class compliant 
    - USB audio digital recording of MIDI+Wave output, class compliant --> for digital recording of game soundtracks
    - USB MIDI in, class compliant 
    - Real MIDI In (DIN connector) 

    Available as PCB and PCB + Enclosure kit

    2 types of enclosure available :
      - 'Classic' enclosure
      - 'Buran' 3d printed enclosure

    You can find the user manual here.

    Standard Soundbank instruments description : download here 
    More detailed MIDI specs, download here.

    Related downloads : soundbanks, preset editor and upload tool available at http://serdaco.com/downloads/

    Demonstration of digital recordings with the GUD soundbank on X3M :  https://soundcloud.com/dreamblaster/sets/x3m]]>     Tue, 27 Jun 2017 18:07:05 +0000