Hsp56 Sound Card Driver 【QUICK ✰】

Based on your search term "hsp56 sound card driver", you are almost certainly looking for drivers for a modem/sound card combo device that was very popular in the late 90s and early 2000s.

Here is the "long post" breakdown of what you have, why it is difficult to find, and how to get it working.

Part 4: Step-by-Step Installation Guide (Windows XP)

Assuming you have downloaded a driver pack (e.g., Conexant_HSP56_XP_5.1.2.05.exe), follow this process:

1. Disable Automatic Driver Installation:

   • Go to System Properties → Hardware → Driver Installation Settings.
   • Choose "No, let me choose what to do."

2. Extract the driver: Do not run the EXE as a standard installer unless it is an OEM package. Instead, extract its contents using WinRAR or 7-Zip to a folder named C:\Drivers\HSP56.

3. Open Device Manager: Find the yellow "Multimedia Audio Controller."

4. Update Driver:

   • Right-click → Update Driver.
   • Select "Install from a list or specific location (Advanced)."
   • Don't search. I will choose the driver to install.
   • Click Have Disk.
   • Browse to C:\Drivers\HSP56 and look for an .inf file (e.g., hsp56.inf, cxaudio.inf).

5. Ignore warnings: Windows will warn "This driver is not digitally signed." Click Continue Anyway.

6. Reboot. After restart, you should see "Conexant HSP56 Audio Device" under Sound, Video, and Game Controllers.

3. Functionality provided

• Audio:
  • Playback and capture (likely up to 16-bit/44.1kHz if AC’97; older codecs less).
  • Mixer controls (volume, input selection, mic gain).
  • Possibly full-duplex operation (simultaneous play and record) but limited by hardware/bus bandwidth.
• Modem:
  • Dial, connect, handle V.90/V.92 protocols, fax classes (Class 1/2/2.0), caller ID, tone detection.
  • AT command interface accessible via a virtual COM port.
• Telephony integrations:
  • Possible TAPI (Telephony API) support for voice applications.

Problem: "The driver installation failed because no HSP56 device was found."

• Cause: Your card is not an HSP56; it's a different C-Media variant.
• Fix: Try the generic C-Media 8738 driver instead. The hardware IDs differ slightly (VEN_13F6&DEV_0111 vs 0100).

"Universal" HSP56 Driver (Community Built)

• HSP56 Unofficial Driver Pack v2.5 – Created by retro enthusiast "trevmint" in 2015. Combines C-Media and Avance Logic INF files into one. Works for Win98SE and WinME.

3. Installation on Windows XP

Windows XP has generic drivers for many of these chipsets. If the card isn't detected automatically: hsp56 sound card driver

1. Open Device Manager.
2. Locate the device (it may be listed under "Other Devices" with a yellow question mark).
3. Right-click and select Update Driver.
4. Choose "Install from a list or specific location" and point it to the folder where you extracted the downloaded driver files.

Method 2: PCI Vendor/Device IDs (For Windows or Linux)

If the card is already installed but without drivers:

1. Open Device Manager.
2. Right-click the unknown device → Properties → Details tab.
3. Select Hardware Ids. You will see something like PCI\VEN_13F6&DEV_0100.
   • VEN_13F6 = C-Media.
   • VEN_10EC = Realtek.
   • VEN_13F6&DEV_0100 = CMI8738.
4. Search the VEN/DEV string online.

Abstract (sample)

The HSP56 (e.g., HSP56 MicroModem or PCI Audio) is a legacy software-based audio and modem combo chipset from the late 1990s, relying heavily on host signal processing (HSP). Unlike hardware-accelerated sound cards, the HSP56 offloads mixing, sample rate conversion, and effects to the CPU via a proprietary Windows driver. This paper examines the driver’s architecture, its reliance on the Windows Driver Model (WDM), the lack of open-source support, and methods for reverse engineering to enable functionality on modern operating systems. We present a case study of driver extraction, disassembly, and partial reimplementation using Linux ALSA.