B-4 SB16 Emulation in MS-DOS/ Windows 95/98
BLASTER Environment
Variable
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
Specifies
Axxx
SB interface’s base I/O
address.
Ix
IRQ line used by the audio
interface.
Dx
First DMA channel used by
the audio interface.
Hx
Second DMA channel used by
the audio interface.
Pxxx
MPU-401 UART interface’s
base I/O address.
Tx
Card type. x must be 6.
Determining Resources
To find the current SB Live! SB16
Emulation resources in Windows 95/98:
1. Click the Start button, point to Settings,
and then click Control Panel.
2. In the Control Panel window,
double-click the System icon.
3. In the System Properties dialog box, click
the Device Manager tab.
4. Double-click Creative Miscellaneous
Devices, and then double-click Creative
SB Live! SB16 Emulation.
5. Click the Resouces tab.
You can use the information in the resource
list to help you configure MS-DOS games for
use with the SB Live! card.
The resource list may show three entries of
“Input/Output Range” and two entries of
“Direct Memory Access”. They correspond to
the sequence of entries in Table B-1 and Table
B-3. If the number of entries do not match, a
good estimate of the identity of the device is
its I/O address or DMA channel.
To find the current SB Live! SB16
Emulation resources in MS-DOS mode:
1. Switch to your SB Live! DOS driver
directory, that is:
C:
\PROGRA~1\CREATIVE\SBLIVE\DOSDRV
2. Type SBECFG and then press <Enter>.
Some older games may have difficulty
detecting the SB Live! card at certain resource
settings. Typically, these games would expect
the card to be at a fixed set of resources and
would fail to load if those resources are not
detected. If you have older MS-DOS games
that do not work properly, try changing the SB
Live! SB16 Emulation configuration. Use the
following as a guide:
Problem: Sound Blaster emulation is not
recognized.
Resource: Try switching the SB Emulation
IRQ between 5 and 7, use DMA channel 1,
use SB interface port 220.
Problem: The MPU-401emulation is not
recognized.
Resource: Try using Port address 330.
Selecting the Best Audio
Options in a Game
Most MS-DOS–based games that provide
sound have some procedure for audio setup.
These procedures generally present you with a
list of popular audio cards or audio devices
from which to choose.
Note: The MS-DOS driver
SBEINIT.COM
must be running for
SBECFG.EXE
to work
properly.
Содержание Sound Blaster Live!
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