Chapter 4
Mixer Chip Programming
Three different mixer chips are used on Sound Blaster cards: CT1335, CT1345 and
CT1745. CT1335 is used on the Sound Blaster 2.0 CD Interface card, CT1345 is used
on the Sound Blaster Pro and CT1745 is used on the Sound Blaster 16.
This chapter discusses the essentials for programming the mixer chips. It covers the
following topics:
features of the mixer chips
programming sequence of the mixer chips
register functions of the mixer chips
In the following discussions, we will first present the sequence to access the mixer
chip. This sequence applies to all the mixer chips. Subsequently, the features and
register functions of each mixer chip will be presented.
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