Creative SB0100 User Guide - Page 53

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: ❑ CTSYN Environment Variable ❑ 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 The parameters in the command are as follows. This Parameter Axxx Ix Dx Hx Pxxx Tx Specifies SB interface's base I/O address. IRQ line used by the audio interface. First DMA channel used by the audio interface. Second DMA channel used by the audio interface. MPU-401 UART interface's base I/O address. Card type. x must be 6. SB Emulation in MS-DOS/ Windows 95/98/ME B-5