Environment 

Environment variables are used to pass hardware configuration information to the software in 

your system. For MS DOS, your audio card includes the following:

Variables

K

CTSYN Environment Variable

K

BLASTER Environment Variable

CTSYN Environment 

The CTSYN environment variable points to the location of the CTSYN.INI file, which usually 

Variable

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.

BLASTER Environment 

The BLASTER environment variable specifies the base I/O address, IRQ line, and DMA 

Variable

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

Specifies

A

xxx

SB interface's base I/O address.

I

x

IRQ line used by the audio interface.

D

x

First DMA channel used by the audio interface.

H

x

Second DMA channel used by the audio interface.

P

xxx

MPU 401 UART interface's base I/O address.

T

x

Card type. 

x

 must be 6.

SB Emulation in MS DOS/ Windows 95/98/ME B 5