Retro Sound – 8Bit ISA SoundBlaster 2.0 (CT1350B)

Last Updated on 4 June 2026 by Suffocation

SoundBlaster 2.0 – A card without a hanging note. 8-bit ISA card with option for FM sound. True OPL2 sound from a Yamaha YM3812 chip.

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Facts

  • Mono Sound (With CMS Stereo)
  • However, Yamaha OPL2 Soundchip
  • Kate needs -5V, otherwise there's almost only noise.
  • Microphone amplifier
NameSound Blaster 2.0
ManufacturerCreative
TypeCT1350B
ChipCT1336, OPL2
Bus8-bit ISA
Sound VersionMono Sound (With CMS Stereo)
Windows3.1
Two3.31?, 5, 6.22
Plug and playNo – Jumper
Publication year
CompatibilityAdLib,
Soundblaster,
WavetableNo
OPL2/3OPL2
Special featuresVolume control
External connectionsOut/In/Mic
Internal Connectors
CD-ROM
GameportYes
System requirementsPC: XT, AT, 286 compatible
Fixed storage: At least two floppy disk drives
RAM: 640kB
Video: CGA. EGA. VGA

User manual

Source: RetroWeb

Driver

I found the drivers at Vogons and Archive.org:

https://www.vogonsdrivers.com/getfile.php?fileid=1002&menustate=52,0

https://archive.org/details/sound-blaster-drivers

Source for the drivers here, if possible, please use the source for the drivers for download.

Operating systemTwoWindowOtherPack/CD
DriverXWindows 3.11XX
Drivers for different operating systems

DOS/Win 3.11

It is important in DOS to set the Soundblaster variable so that programmes know how to address the sound card.

#Autoexec.bat
SET SOUND=C:\driver\sound\SB20
SET BLASTER=A220 I5 D1 T3
SET MIDI=SYNTH:1 MAP:E

#Config.sys
DEVICE=C:\DRIVER\SOUND\SB20\CTSB2.SYS /UNIT=0 /BLASTER=a220 I:5 D:1
DEVICE=C:\DRIVER\SOUND\SB20\CTMMSYS.SYS

Packages

Diskette set from Archive.org

Package from the Vogons

Sound problems

Windows no sound in DOS mode

  • Install/start DOS driver
  • Install SB16 Emulation

No music

  • Check settings, is the address correct?

No TFX sound

  • Check settings, SIMM, Address, IRQ, DMA...

IRQ Busy

  • BIOS IRQ Search Reset
  • Assign IRQ in BIOS
  • Use another slot (usually means another IRQ too)
  • Reserve IRQ for ISA (it will then not be available for PCI)

IRQ not suitable for DOS

  • Reserve IRQ for ISA (it will then not be available for PCI)
  • See IRQ Occupied

Choppy sound with interruptions

This can happen if the IRQ is doubly assigned. For this, please look at the solutions for „IRQ Occupied“.

Loud humming from the speakers

If a modern power supply is used, the -5V rail is very likely to be missing. Either an old power supply should be used or a device such as VoltageBlaster. This one uses the -12V and a voltage regulator to supply the mainboard with -5V.

Miscellaneous

Test report

PC Player 2023-2

Pages 16-18

PC Player German Magazine 1993-02 : PC Player : Free Download, Borrow, and Streaming : Internet Archive

Pages 20-21

CMS Update

Is there any on eBay for around €15-25? For that, you get 3 ICS 2x. Philips SAA1099P and a GAL IC.

Conclusion

123Besc,
description
Worth
Successfully InstalledYes – it wasn't a problem
Price ~85 €
FunctionOK
Is it worth itYes – because it’s a piece of 8-bit history.
No because the price is far too high.
Restrictions8-bit ISA for old PCs, mono sound, Adlib compatible, and the CMS Phillips chips can also be retrofitted, giving you stereo sound for effects.
Conclusion to the project

Related Posts

Sources

Driver

RetroWeb

Wikipedia – Sound Blaster

Drivers with the Vogons – https://www.vogonsdrivers.com/getfile.php?fileid=1002&menustate=52,0

Drivers at Archive.org – https://archive.org/details/sound-blaster-drivers

Good places to get sound drivers

Vogon Driver Page http://vogonsdrivers.com

Phillips Computer Lab – https://www.philscomputerlab.com

Archive.org https://archive.org

Log

DateDescription
23.09.2025Post created, images uploaded, text adjusted. Technical data entered into table.
13.04.2025Featured image changed (was the SB 16), looked for test reports from that time.
04.06.2026Post improved and finalised, images with FM chipset inserted.