Creative SB0060 User Guide - Page 86

Direct Memory Access (DMA) Channel A DMA channel is a data channel that a device uses to transfer data directly to and from the system memory. Table B-3: Possible default direct memory access (DMA) channel assignment. Usage Default DMA Channel First DMA channel 0, 1, 3 Second DMA channel 5, 6, 7 Understanding the Environment Variables CTSYN Environment Variable BLASTER Environment Variable Environment variables are used to pass hardware configuration information to the software in your system. For MS-DOS, your audio card includes the following: u CTSYN Environment Variable u BLASTER Environment Variable The CTSYN environment variable points to the location of the CTSYN.INI file, which usually resides in the Windows directory. The syntax for this variable is as follows: CTSYN=path where path is the location of the CTSYN.INI file. The BLASTER environment variable specifies the base I/O address, IRQ line, and DMA channels of the SB interface. Its syntax is: BLASTER=A220 I5 D1 H5 P330 T6 B-6 SB Emulation in MS-DOS/ Windows 95/98