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 Service Hints & Tips | Document ID: JBAR-3T3L2U | 
IBM PC300GL (Type 6561, 6591) - Crystal Audio wavetable (MPU-401) upgrade available
Applicable to: World-Wide
TEXT:
The IBM PC300GL features an optional Crystal Audio Card that uses the 4237B Crystal audio chip with integrated SRS 3D Sound Technology. This card can accept a hardware based Wavetable Synthesis upgrade that enhances your audio output by providing full 32-note polyphony.  The base configuration of this card supports FM synthesis with the 28- pin PLCC socket NOT populated. Populating this 28-pin PLCC socket will allow an upgrade to support hardware Wavetable Synthesis.
Hardware Wavetable Description:
The hardware wavetable upgrade option is supported by the Cirrus Logic Single-Chip Wavetable Music Synthesizer, part number CS9236-CL.  This device when properly populated into the 28-pin PLCC socket on the Crystal audio card will allow the user to play MIDI files with enhanced musical attributes through the MPU-401 interface that is utilized by the hardware wavetable device.  This wavetable upgrade option can be purchased in small quantities (< 500) by contacting NuHorizons, a Cirrus Logic Distributor, at http://www.nuhorizons.com or at 1-888-747-NUHO for US domestic shipments and 973-882-4290 for international shipments.
In order to implement the wavetable functionality (MPU-401), the socket must be populated with the CS9236-CL.  For OS/2 and Windows NT users, separate device drivers are required to enable the wavetable (MPU-401).  These drivers may be found on the IBM e- support web page.
Click on the following link for the OS/2 Driver with wavetable support:-  
Click on the following link for Windows NT 4.0 installation instructions:- 
| Search Keywords |  | |
| Hint Category | Audio | |
| Date Created | 30-03-98 | |
| Last Updated | 18-06-98 | |
| Revision Date | 16-06-99 | |
| Brand | IBM PC | |
| Product Family | PC 300GL | |
| Machine Type | 6561, 6591 | |
| Model | various | |
| TypeModel |  | |
| Retain Tip (if applicable) |  | |
| Reverse Doclinks |