Asus CUSI-FX Motherboard C-Media CMI8738/C3DX Audio Driver V2.75a for Windows 95/98 Audio VxD Drivers

Motherboard » Asus

License: Freeware / Date Added: Apr 2008 / Operating Systems: Windows 9x / File Size: 1.57 MB / Publisher: Asus

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CMI8738 PCI Audio Windows 95/98 Drivers Release Note

Rev 4.06.1096 7/25/2001
1. VxD : release the limitation of digital share over S/PDIF input monitoring
2. VxD : set the default XGPBIO to 0
3. DRV : change the name "PC Speaker" to "Mono In"

Rev 4.06.1095d 6/21/2001
1. DRV, VxD : implement digital phone jack shared with analog on 039(or later)
2. CMSYNTH: fix problems that SoftMIDI mute from S1 wakeup (only on 037 chip)

Rev 4.06.1095c 5/21/2001
1. Vxd: fix the problem of "crashed in shutdown in Win95". The cause is when free memory of SoftMidi in dsTerminateDriver, some memory blocks are released more than twice. In Win98, it is not a problem; however, in Win95, it will cause system crashed.
2. DRV: add Disabe SPDIF in Mixer

Rev 4.06.1095b 4/12/2001
1. DRV: ac3 stream fail if disable SPDIF
2. VxD: don't touch AdcDacLen register bits

Rev 4.06.1095a 3/21/2001
1. Drv: 2 problems fixed
1). ADC2SPDIF is removed from drv
2). the SPDIF IN sampling rate 44k/48k select bit (18H, bit 24) is bad, must reference SPDIF OUT sampling rate 44k/48k select bit (2 incorrect places found in drv).
2. Vxd: ADC2SPDIF is added to vxd
3. Vxd: 3 problems fixed:
1). the category codes added in Construct_SPDIF_Frame are missed sometimes.
2). in 055 chip, when enable SPDIF OUT, we can't monitor SPDIF OUT, because ADC2SPDIF is enabled incorrectly.
3). the SPDIF IN sampling rate 44k/48k select bit (18H, bit 24) is bad, must reference SPDIF OUT sampling rate 44k/48k select bit (7 incorrect places found in vxd).

Rev 4.06.1095 2/8/2001
1. drv: add 055 chip version judgement
2. drv: lower master volume mechanism by registry (MasterVolAtten)
3. drv, vxd: software encoded SPDIF support 44K/48K category code
4. drv: support Adc to SPDIF mixer switch (Adc2SPDIF)
5. drv, vxd: hardware spdif ac3 raw data for 37/39 chip
6. Vxd: correct two bugs (in step4)
1). playing->enable SPDIFOUT->enable MDLP->disable SPDIFOUT->enable SPDIFOUT==>noise
2). enable SPDIFOUT->enable MDLP->play AudioRack MP3->press pause==>crash
7. Vxd: support hardware/software SPDIFOUT in DirectSound, when the format is 48k, 16 bit, stereo (a kind of DS_DAC_NO_SECONDARY) (in step5)

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