ref: 5f3987b8e5f4c1ce992e5f9caff744af822bcba2
dir: /src/ASCEMDEV.c/
/*
ASCEMDEV.c
Copyright (C) 2008 Paul C. Pratt
You can redistribute this file and/or modify it under the terms
of version 2 of the GNU General Public License as published by
the Free Software Foundation. You should have received a copy
of the license along with this file; see the file COPYING.
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
license for more details.
*/
/*
Apple Sound Chip EMulated DEVice
*/
#ifndef AllFiles
#include "SYSDEPNS.h"
#include "ENDIANAC.h"
#include "MYOSGLUE.h"
#include "EMCONFIG.h"
#include "GLOBGLUE.h"
#include "VIAEMDEV.h"
#endif
#include "ASCEMDEV.h"
/*
ReportAbnormalID unused 0x0F0E, 0x0F1E - 0x0FFF
*/
LOCALVAR ui3r SoundReg801 = 0;
LOCALVAR ui3r SoundReg802 = 0;
LOCALVAR ui3r SoundReg803 = 0;
LOCALVAR ui3r SoundReg804 = 0;
LOCALVAR ui3r SoundReg805 = 0;
LOCALVAR ui3r SoundReg_Volume = 0; /* 0x806 */
/* LOCALVAR ui3r SoundReg807 = 0; */
LOCALVAR ui3b ASC_SampBuff[0x800];
struct ASC_ChanR {
ui3b freq[4];
ui3b phase[4];
};
typedef struct ASC_ChanR ASC_ChanR;
LOCALVAR ASC_ChanR ASC_ChanA[4];
LOCALVAR ui4b ASC_FIFO_Out = 0;
LOCALVAR ui4b ASC_FIFO_InA = 0;
LOCALVAR ui4b ASC_FIFO_InB = 0;
LOCALVAR blnr ASC_Playing = falseblnr;
#define ASC_dolog (dbglog_HAVE && 0)
#ifdef ASC_interrupt_PulseNtfy
IMPORTPROC ASC_interrupt_PulseNtfy(void);
#endif
LOCALPROC ASC_RecalcStatus(void)
{
if ((1 == SoundReg801) && ASC_Playing) {
if (((ui4b)(ASC_FIFO_InA - ASC_FIFO_Out)) >= 0x200) {
SoundReg804 &= ~ 0x01;
} else {
SoundReg804 |= 0x01;
}
if (((ui4b)(ASC_FIFO_InA - ASC_FIFO_Out)) >= 0x400) {
SoundReg804 |= 0x02;
} else {
SoundReg804 &= ~ 0x02;
}
if (0 != (SoundReg802 & 2)) {
if (((ui4b)(ASC_FIFO_InB - ASC_FIFO_Out)) >= 0x200) {
SoundReg804 &= ~ 0x04;
} else {
SoundReg804 |= 0x04;
}
if (((ui4b)(ASC_FIFO_InB - ASC_FIFO_Out)) >= 0x400) {
SoundReg804 |= 0x08;
} else {
SoundReg804 &= ~ 0x08;
}
}
}
}
LOCALPROC ASC_ClearFIFO(void)
{
ASC_FIFO_Out = 0;
ASC_FIFO_InA = 0;
ASC_FIFO_InB = 0;
ASC_Playing = falseblnr;
ASC_RecalcStatus();
}
GLOBALFUNC ui5b ASC_Access(ui5b Data, blnr WriteMem, CPTR addr)
{
if (addr < 0x800) {
if (WriteMem) {
if (1 == SoundReg801) {
if (0 == (addr & 0x400)) {
if (((ui4b)(ASC_FIFO_InA - ASC_FIFO_Out)) >= 0x400)
{
#if 0 /* seems to happen in tetris */
ReportAbnormalID(0x0F01,
"ASC - Channel A Overflow");
#endif
SoundReg804 |= 0x02;
} else {
ASC_SampBuff[ASC_FIFO_InA & 0x3FF] = Data;
++ASC_FIFO_InA;
if (((ui4b)(ASC_FIFO_InA - ASC_FIFO_Out)) >= 0x200)
{
if (0 != (SoundReg804 & 0x01)) {
/* happens normally */
SoundReg804 &= ~ 0x01;
}
} else {
#if 0 /* doesn't seem to be necessary, but doesn't hurt either */
SoundReg804 |= 0x01;
#endif
}
if (((ui4b)(ASC_FIFO_InA - ASC_FIFO_Out)) >= 0x400)
{
SoundReg804 |= 0x02;
#if ASC_dolog
dbglog_WriteNote("ASC : setting full flag A");
#endif
} else {
if (0 != (SoundReg804 & 0x02)) {
ReportAbnormalID(0x0F02, "ASC_Access : "
"full flag A not already clear");
SoundReg804 &= ~ 0x02;
}
}
}
} else {
if (0 == (SoundReg802 & 2)) {
ReportAbnormalID(0x0F03,
"ASC - Channel B for Mono");
}
if (((ui4b)(ASC_FIFO_InB - ASC_FIFO_Out)) >= 0x400)
{
ReportAbnormalID(0x0F04,
"ASC - Channel B Overflow");
SoundReg804 |= 0x08;
} else {
ASC_SampBuff[0x400 + (ASC_FIFO_InB & 0x3FF)] = Data;
++ASC_FIFO_InB;
if (((ui4b)(ASC_FIFO_InB - ASC_FIFO_Out)) >= 0x200)
{
if (0 != (SoundReg804 & 0x04)) {
/* happens normally */
SoundReg804 &= ~ 0x04;
}
} else {
#if 0 /* doesn't seem to be necessary, but doesn't hurt either */
SoundReg804 |= 0x04;
#endif
}
if (((ui4b)(ASC_FIFO_InB - ASC_FIFO_Out)) >= 0x400)
{
SoundReg804 |= 0x08;
#if ASC_dolog
dbglog_WriteNote("ASC : setting full flag B");
#endif
} else {
if (0 != (SoundReg804 & 0x08)) {
ReportAbnormalID(0x0F05, "ASC_Access : "
"full flag B not already clear");
SoundReg804 &= ~ 0x08;
}
}
}
}
#if ASC_dolog && 0
dbglog_writeCStr("ASC_InputIndex =");
dbglog_writeNum(ASC_InputIndex);
dbglog_writeReturn();
#endif
} else {
ASC_SampBuff[addr] = Data;
}
} else {
Data = ASC_SampBuff[addr];
}
#if ASC_dolog && 1
#if 0
if (((addr & 0x1FF) >= 0x04)
&& ((addr & 0x1FF) < (0x200 - 0x04)))
{
/* don't report them all */
} else
#endif
{
dbglog_AddrAccess("ASC_Access SampBuff",
Data, WriteMem, addr);
}
#endif
} else if (addr < 0x810) {
switch (addr) {
case 0x800: /* VERSION */
if (WriteMem) {
ReportAbnormalID(0x0F06, "ASC - writing VERSION");
} else {
Data = 0;
}
#if ASC_dolog && 1
dbglog_AddrAccess("ASC_Access Control (VERSION)",
Data, WriteMem, addr);
#endif
break;
case 0x801: /* ENABLE */
if (WriteMem) {
if (1 == Data) {
if (1 != SoundReg801) {
ASC_ClearFIFO();
}
} else {
if (Data > 2) {
ReportAbnormalID(0x0F07,
"ASC - unexpected ENABLE");
}
}
SoundReg801 = Data;
} else {
Data = SoundReg801;
/* happens in LodeRunner */
}
#if ASC_dolog && 1
dbglog_AddrAccess("ASC_Access Control (ENABLE)",
Data, WriteMem, addr);
#endif
break;
case 0x802: /* CONTROL */
if (WriteMem) {
#if 1
if (0 != SoundReg801) {
if (SoundReg802 == Data) {
/*
this happens normally,
such as in Lunar Phantom
*/
} else {
if (1 == SoundReg801) {
/*
happens in dark castle, if play other sound first,
such as by changing beep sound in sound control panel.
*/
ASC_ClearFIFO();
}
#if 0
ReportAbnormalID(0x0F08,
"ASC - changing CONTROL while ENABLEd");
#endif
}
}
#endif
if (0 != (Data & ~ 2)) {
ReportAbnormalID(0x0F09,
"ASC - unexpected CONTROL value");
}
SoundReg802 = Data;
} else {
Data = SoundReg802;
ReportAbnormalID(0x0F0A,
"ASC - reading CONTROL value");
}
#if ASC_dolog && 1
dbglog_AddrAccess("ASC_Access Control (CONTROL)",
Data, WriteMem, addr);
#endif
break;
case 0x803:
if (WriteMem) {
if (0 != (Data & ~ 0x80)) {
ReportAbnormalID(0x0F0B,
"ASC - unexpected FIFO MODE");
}
if (0 != (Data & 0x80)) {
if (0 != (SoundReg803 & 0x80)) {
ReportAbnormalID(0x0F0C,
"ASC - set clear FIFO again");
} else
if (1 != SoundReg801) {
#if 0 /* happens in system 6, such as with Lunar Phantom */
ReportAbnormalID(0x0F0D,
"ASC - clear FIFO when not FIFO mode");
#endif
} else
{
ASC_ClearFIFO();
/*
ASC_interrupt_PulseNtfy();
Doesn't seem to be needed,
but doesn't hurt either.
*/
}
}
SoundReg803 = Data;
} else {
Data = SoundReg803;
}
#if ASC_dolog && 1
dbglog_AddrAccess("ASC_Access Control (FIFO MODE)",
Data, WriteMem, addr);
#endif
break;
case 0x804:
if (WriteMem) {
#if 0
if ((0 != SoundReg804) && (0 != Data)) {
ReportAbnormalID(0x0F0F,
"ASC - set FIFO IRQ STATUS when not 0");
}
#endif
SoundReg804 = Data;
if (0 != SoundReg804) {
ASC_interrupt_PulseNtfy();
/*
Generating this interrupt seems
to be the point of writing to
this register.
*/
}
#if ASC_dolog && 1
dbglog_AddrAccess(
"ASC_Access Control (FIFO IRQ STATUS)",
Data, WriteMem, addr);
#endif
} else {
Data = SoundReg804;
#if 0
if (1 != SoundReg801) {
/* no, ok, part of normal interrupt handling */
ReportAbnormalID(0x0F10,
"ASC - read STATUS when not FIFO");
}
#endif
/* SoundReg804 = 0; */
SoundReg804 &= ~ 0x01;
SoundReg804 &= ~ 0x04;
/*
In lunar phantom, observe checking
full flag before first write, but
status was read previous.
*/
#if ASC_dolog && 1
#if 0
if (0 != Data)
#endif
{
dbglog_AddrAccess(
"ASC_Access Control (FIFO IRQ STATUS)",
Data, WriteMem, addr);
}
#endif
}
break;
case 0x805:
if (WriteMem) {
SoundReg805 = Data;
/* cleared in LodeRunner */
} else {
Data = SoundReg805;
ReportAbnormalID(0x0F11,
"ASC - reading WAVE CONTROL register");
}
#if ASC_dolog && 1
dbglog_AddrAccess("ASC_Access Control (WAVE CONTROL)",
Data, WriteMem, addr);
#endif
break;
case 0x806: /* VOLUME */
if (WriteMem) {
SoundReg_Volume = Data >> 5;
if (0 != (Data & 0x1F)) {
ReportAbnormalID(0x0F12,
"ASC - unexpected volume value");
}
} else {
Data = SoundReg_Volume << 5;
ReportAbnormalID(0x0F13,
"ASC - reading volume register");
}
#if ASC_dolog && 1
dbglog_AddrAccess("ASC_Access Control (VOLUME)",
Data, WriteMem, addr);
#endif
break;
case 0x807: /* CLOCK RATE */
if (WriteMem) {
/* SoundReg807 = Data; */
if (0 != Data) {
ReportAbnormalID(0x0F14,
"ASC - nonstandard CLOCK RATE");
}
} else {
/* Data = SoundReg807; */
ReportAbnormalID(0x0F15,
"ASC - reading CLOCK RATE");
}
#if ASC_dolog && 1
dbglog_AddrAccess("ASC_Access Control (CLOCK RATE)",
Data, WriteMem, addr);
#endif
break;
case 0x808: /* CONTROL */
if (WriteMem) {
ReportAbnormalID(0x0F16, "ASC - write to 808");
} else {
/* happens on boot System 7.5.5 */
Data = 0;
}
#if ASC_dolog && 1
dbglog_AddrAccess("ASC_Access Control (CONTROL)",
Data, WriteMem, addr);
#endif
break;
case 0x80A: /* ? */
if (WriteMem) {
ReportAbnormalID(0x0F17, "ASC - write to 80A");
} else {
/*
happens in system 6, Lunar Phantom,
soon after new game.
*/
Data = 0;
}
#if ASC_dolog && 1
dbglog_AddrAccess("ASC_Access Control (80A)",
Data, WriteMem, addr);
#endif
break;
default:
if (WriteMem) {
} else {
Data = 0;
}
ReportAbnormalID(0x0F18, "ASC - unknown ASC reg");
#if ASC_dolog && 1
dbglog_AddrAccess("ASC_Access Control (?)",
Data, WriteMem, addr);
#endif
break;
}
} else if (addr < 0x830) {
ui3r b = addr & 3;
ui3r chan = ((addr - 0x810) >> 3) & 3;
if (0 != (addr & 4)) {
if (WriteMem) {
ASC_ChanA[chan].freq[b] = Data;
} else {
Data = ASC_ChanA[chan].freq[b];
}
#if ASC_dolog && 1
dbglog_AddrAccess("ASC_Access Control (frequency)",
Data, WriteMem, addr);
#endif
#if ASC_dolog && 0
dbglog_writeCStr("freq b=");
dbglog_writeNum(WriteMem);
dbglog_writeCStr(", chan=");
dbglog_writeNum(chan);
dbglog_writeReturn();
#endif
} else {
if (WriteMem) {
ASC_ChanA[chan].phase[b] = Data;
} else {
Data = ASC_ChanA[chan].phase[b];
}
#if ASC_dolog && 1
dbglog_AddrAccess("ASC_Access Control (phase)",
Data, WriteMem, addr);
#endif
}
} else if (addr < 0x838) {
#if ASC_dolog && 1
dbglog_AddrAccess("ASC_Access Control *** unknown reg",
Data, WriteMem, addr);
#endif
} else {
#if ASC_dolog && 1
dbglog_AddrAccess("ASC_Access Control ? *** unknown reg",
Data, WriteMem, addr);
#endif
ReportAbnormalID(0x0F19, "unknown ASC reg");
}
return Data;
}
/*
approximate volume levels of vMac, so:
x * vol_mult[SoundVolume] >> 16
+ vol_offset[SoundVolume]
= {approx} (x - kCenterSound) / (8 - SoundVolume) + kCenterSound;
*/
LOCALVAR const ui4b vol_mult[] = {
8192, 9362, 10922, 13107, 16384, 21845, 32768
};
LOCALVAR const trSoundSamp vol_offset[] = {
#if 3 == kLn2SoundSampSz
112, 110, 107, 103, 96, 86, 64, 0
#elif 4 == kLn2SoundSampSz
28672, 28087, 27307, 26215, 24576, 21846, 16384, 0
#else
#error "unsupported kLn2SoundSampSz"
#endif
};
LOCALVAR const ui3r SubTick_n[kNumSubTicks] = {
23, 23, 23, 23, 23, 23, 23, 24,
23, 23, 23, 23, 23, 23, 23, 24
};
GLOBALPROC ASC_SubTick(int SubTick)
{
ui4r actL;
#if MySoundEnabled
tpSoundSamp p;
#endif
ui4r i;
ui4r n = SubTick_n[SubTick];
#if MySoundEnabled
ui3b SoundVolume = SoundReg_Volume;
#endif
#if MySoundEnabled
label_retry:
p = MySound_BeginWrite(n, &actL);
#else
actL = n;
#endif
if (actL > 0) {
if (1 == SoundReg801) {
#if MySoundEnabled
ui3p addr;
#endif
if (0 != (SoundReg802 & 2)) {
if (! ASC_Playing) {
if (((ui4b)(ASC_FIFO_InA - ASC_FIFO_Out)) >= 0x200) {
if (((ui4b)(ASC_FIFO_InB - ASC_FIFO_Out)) >= 0x200)
{
SoundReg804 &= ~ 0x01;
SoundReg804 &= ~ 0x04;
ASC_Playing = trueblnr;
#if ASC_dolog
dbglog_WriteNote("ASC : start stereo playing");
#endif
} else {
if (((ui4b)(ASC_FIFO_InB - ASC_FIFO_Out)) == 0)
if (((ui4b)(ASC_FIFO_InA - ASC_FIFO_Out))
>= 370)
{
#if ASC_dolog
dbglog_WriteNote("ASC : switch to mono");
#endif
SoundReg802 &= ~ 2;
/*
cludge to get Tetris to work,
may not actually work on real machine.
*/
}
}
}
}
for (i = 0; i < actL; i++) {
if (((ui4b)(ASC_FIFO_InA - ASC_FIFO_Out)) == 0) {
ASC_Playing = falseblnr;
}
if (((ui4b)(ASC_FIFO_InB - ASC_FIFO_Out)) == 0) {
ASC_Playing = falseblnr;
}
if (! ASC_Playing) {
#if MySoundEnabled
*p++ = 0x80;
#endif
} else
{
#if MySoundEnabled
addr = ASC_SampBuff + (ASC_FIFO_Out & 0x3FF);
#if ASC_dolog && 1
dbglog_StartLine();
dbglog_writeCStr("out sound ");
dbglog_writeCStr("[");
dbglog_writeHex(ASC_FIFO_Out);
dbglog_writeCStr("]");
dbglog_writeCStr(" = ");
dbglog_writeHex(*addr);
dbglog_writeCStr(" , ");
dbglog_writeHex(addr[0x400]);
dbglog_writeReturn();
#endif
*p++ = ((addr[0] + addr[0x400])
#if 4 == kLn2SoundSampSz
<< 8
#endif
) >> 1;
#endif /* MySoundEnabled */
ASC_FIFO_Out += 1;
}
}
} else {
/* mono */
if (! ASC_Playing) {
if (((ui4b)(ASC_FIFO_InA - ASC_FIFO_Out)) >= 0x200)
{
SoundReg804 &= ~ 0x01;
ASC_Playing = trueblnr;
#if ASC_dolog
dbglog_WriteNote("ASC : start mono playing");
#endif
}
}
for (i = 0; i < actL; i++) {
if (((ui4b)(ASC_FIFO_InA - ASC_FIFO_Out)) == 0) {
ASC_Playing = falseblnr;
}
if (! ASC_Playing) {
#if MySoundEnabled
*p++ = 0x80;
#endif
} else
{
#if MySoundEnabled
addr = ASC_SampBuff + (ASC_FIFO_Out & 0x3FF);
#if ASC_dolog && 1
dbglog_StartLine();
dbglog_writeCStr("out sound ");
dbglog_writeCStr("[");
dbglog_writeHex(ASC_FIFO_Out);
dbglog_writeCStr("]");
dbglog_writeCStr(" = ");
dbglog_writeHex(*addr);
dbglog_writeCStr(", in buff: ");
dbglog_writeHex((ui4b)(ASC_FIFO_InA - ASC_FIFO_Out));
dbglog_writeReturn();
#endif
*p++ = (addr[0])
#if 4 == kLn2SoundSampSz
<< 8
#endif
;
#endif /* MySoundEnabled */
/* Move the address on */
/* *addr = 0x80; */
/* addr += 2; */
ASC_FIFO_Out += 1;
}
}
}
} else if (2 == SoundReg801) {
#if MySoundEnabled
ui4r v;
ui4r i0;
ui4r i1;
ui4r i2;
ui4r i3;
#endif
ui5r freq0 = do_get_mem_long(ASC_ChanA[0].freq);
ui5r freq1 = do_get_mem_long(ASC_ChanA[1].freq);
ui5r freq2 = do_get_mem_long(ASC_ChanA[2].freq);
ui5r freq3 = do_get_mem_long(ASC_ChanA[3].freq);
ui5r phase0 = do_get_mem_long(ASC_ChanA[0].phase);
ui5r phase1 = do_get_mem_long(ASC_ChanA[1].phase);
ui5r phase2 = do_get_mem_long(ASC_ChanA[2].phase);
ui5r phase3 = do_get_mem_long(ASC_ChanA[3].phase);
#if ASC_dolog && 1
dbglog_writeCStr("freq0=");
dbglog_writeNum(freq0);
dbglog_writeCStr(", freq1=");
dbglog_writeNum(freq1);
dbglog_writeCStr(", freq2=");
dbglog_writeNum(freq2);
dbglog_writeCStr(", freq3=");
dbglog_writeNum(freq3);
dbglog_writeReturn();
#endif
for (i = 0; i < actL; i++) {
phase0 += freq0;
phase1 += freq1;
phase2 += freq2;
phase3 += freq3;
#if MySoundEnabled
#if 1
i0 = ((phase0 + 0x4000) >> 15) & 0x1FF;
i1 = ((phase1 + 0x4000) >> 15) & 0x1FF;
i2 = ((phase2 + 0x4000) >> 15) & 0x1FF;
i3 = ((phase3 + 0x4000) >> 15) & 0x1FF;
#else
i0 = ((phase0 + 0x8000) >> 16) & 0x1FF;
i1 = ((phase1 + 0x8000) >> 16) & 0x1FF;
i2 = ((phase2 + 0x8000) >> 16) & 0x1FF;
i3 = ((phase3 + 0x8000) >> 16) & 0x1FF;
#endif
v = ASC_SampBuff[i0]
+ ASC_SampBuff[0x0200 + i1]
+ ASC_SampBuff[0x0400 + i2]
+ ASC_SampBuff[0x0600 + i3];
#if ASC_dolog && 1
dbglog_StartLine();
dbglog_writeCStr("i0=");
dbglog_writeNum(i0);
dbglog_writeCStr(", i1=");
dbglog_writeNum(i1);
dbglog_writeCStr(", i2=");
dbglog_writeNum(i2);
dbglog_writeCStr(", i3=");
dbglog_writeNum(i3);
dbglog_writeCStr(", output sound v=");
dbglog_writeNum(v);
dbglog_writeReturn();
#endif
*p++ = (v >> 2);
#endif /* MySoundEnabled */
}
do_put_mem_long(ASC_ChanA[0].phase, phase0);
do_put_mem_long(ASC_ChanA[1].phase, phase1);
do_put_mem_long(ASC_ChanA[2].phase, phase2);
do_put_mem_long(ASC_ChanA[3].phase, phase3);
} else {
#if MySoundEnabled
for (i = 0; i < actL; i++) {
*p++ = kCenterSound;
}
#endif
}
#if MySoundEnabled
if (SoundVolume < 7) {
/*
Usually have volume at 7, so this
is just for completeness.
*/
ui5b mult = (ui5b)vol_mult[SoundVolume];
trSoundSamp offset = vol_offset[SoundVolume];
p -= actL;
for (i = 0; i < actL; i++) {
*p = (trSoundSamp)((ui5b)(*p) * mult >> 16) + offset;
++p;
}
}
MySound_EndWrite(actL);
n -= actL;
if (n > 0) {
goto label_retry;
}
#endif
}
#if 1
if ((1 == SoundReg801) && ASC_Playing) {
if (((ui4b)(ASC_FIFO_InA - ASC_FIFO_Out)) >= 0x200) {
if (0 != (SoundReg804 & 0x01)) {
ReportAbnormalID(0x0F1A,
"half flag A not already clear");
SoundReg804 &= ~ 0x01;
}
} else {
if (0 != (SoundReg804 & 0x01)) {
/* happens in lode runner */
} else {
#if ASC_dolog
dbglog_WriteNote("setting half flag A");
#endif
ASC_interrupt_PulseNtfy();
SoundReg804 |= 0x01;
}
}
if (((ui4b)(ASC_FIFO_InA - ASC_FIFO_Out)) >= 0x400) {
if (0 == (SoundReg804 & 0x02)) {
ReportAbnormalID(0x0F1B, "full flag A not already set");
SoundReg804 |= 0x02;
}
} else {
if (0 != (SoundReg804 & 0x02)) {
/* ReportAbnormal("full flag A not already clear"); */
SoundReg804 &= ~ 0x02;
}
}
if (0 != (SoundReg802 & 2)) {
if (((ui4b)(ASC_FIFO_InB - ASC_FIFO_Out)) >= 0x200) {
if (0 != (SoundReg804 & 0x04)) {
ReportAbnormalID(0x0F1C,
"half flag B not already clear");
SoundReg804 &= ~ 0x04;
}
} else {
if (0 != (SoundReg804 & 0x04)) {
/* happens in Lunar Phantom */
} else {
#if ASC_dolog
dbglog_WriteNote("setting half flag B");
#endif
ASC_interrupt_PulseNtfy();
SoundReg804 |= 0x04;
}
}
if (((ui4b)(ASC_FIFO_InB - ASC_FIFO_Out)) >= 0x400) {
if (0 == (SoundReg804 & 0x08)) {
ReportAbnormalID(0x0F1D,
"full flag B not already set");
SoundReg804 |= 0x08;
}
} else {
if (0 != (SoundReg804 & 0x08)) {
/*
ReportAbnormal("full flag B not already clear");
*/
SoundReg804 &= ~ 0x08;
}
}
}
}
#endif
}