Creative AWE32 - Significance of Awe32 Numg Variable; Enable Real-Time Panning Using Awe32 Rtimepan Variable

SB AWE32 Developer's Information Pack PART II DOS Real/Protected Mode API •• 33
Copyright  Creative Technology Ltd., 1994-1996 Version 3.00
DATA Start int* __sbkload_code()
DATA End int* __sbkload_ecode()
WAVLOAD.OBJ CODE Start __wavload_code()
CODE End __wavload_ecode()
DATA Start int* __wavload_code()
DATA End int* __wavload_ecode()
NRPN.OBJ CODE Start __nrpn_code()
CODE End __nrpn_ecode()
DATA Start int* __nrpn_code()
DATA End int* __nrpn_ecode()
MIDIVAR.OBJ DATA Start __midivar_data
DATA End __midivar_edata
NRPNVAR.OBJ DATA Start __nrpnvar_data
DATA End __nrpnvar_edata
EMBED.OBJ DATA Start __embed_data
DATA End __embed_edata
For applications that require the starting and ending addresses of each file module, they can be obtained
as follows:
// midieng.obj
void* code_start = (void*) __midieng_code;
void* code_end = (void*) __midieng_ecode;
void* data_start = (void*) __midieng_code();
void* data_end = (void*) __midieng_ecode();
For users who are developing drivers that make use of hardware interrupts in protected mode, all
modules except HARDWARE.OBJ and SBKLOAD.OBJ and any additional preset buffers must be page
locked. If NRPN is not used, NRPN.OBJ and NRPNVAR.OBJ can be omitted.
Significance of awe32NumG variable
If you intend to use only the ROM (i.e., General MIDI) instruments, you can set
awe32NumG
to 32 and
you will be using the full 32 oscillators on the EMU8000 subsystem.
If you plan to use both ROM sound and DRAM instruments/sound effects, or instruments/sound effects
from DRAM only, you have to set
awe32NumG
to 30, i.e., using only 30 oscillators on the EMU8000
subsystem. The remaining 2 oscillators have to be used for DRAM memory refresh. Failure to do so may
result in the DRAM sound being playback incorrectly.
Enable real-time panning using awe32RTimePan variable
If you intend to use real-time panning, you could now enable it by setting
awe32RTimePan
to 1. The
option is disabled by default because of the limitation in the EMU8000 hardware. The left and right
volumes are not interpolated in real-time. As a result, if the pan positions are updated in real-time,