kmain() {
terminal_init();
setup_IDT_entry (&idt[0x08], 0x08, (dword)&_int_08_hand, ACS_INT, 0);
setup_IDT_entry (&idt[0x09], 0x08, (dword)&_int_09_hand, ACS_INT, 0);
setup_IDT_entry (&idt[0x74], 0x08, (dword)&_int_74_hand, ACS_INT, 0);
setup_IDT_entry (&idt[0x80], 0x08, (dword)&_int_80_hand, ACS_INT, 0);
/* IDTR Setting */
idtr.base = 0;
idtr.base +=(dword) &idt;
idtr.limit = sizeof(idt)-1;
_lidt(&idtr);
/* Interrupt unmasking */
_cli();
_maskPIC1(0xF8); /*0XF8*/
_maskPIC2(0xEF); /*0XEF*/
_sti();
video_init();
timertick_init();
rtc_init();
mouse_init();
shell_run();
}
PUBLIC void _expandStack() {
_cli();
PROCESS *proc = scheduler_getCurrentProcess();
proc->stack -= PAGE_SIZE;
proc->stacksize += PAGE_SIZE;
// FIXME: check for used pages.
get_page(proc->stack, true, current_directory);
log(L_DEBUG, "EXPANDED: %s starts at 0x%x to 0x%x", proc->name, proc->stack, proc->stack + proc->stacksize - 1);
printf("STACK EXPANDED: %s starts at 0x%x to 0x%x (esp: 0x%x)\n", proc->name, proc->stack, proc->stack + proc->stacksize - 1, proc->ESP);
}
static int soundblaster_stop_playback(soundcard_t sc) {
struct sndsb_ctx *card = soundblaster_get_sndsb_ctx(sc);
if (card == NULL) return -1;
if (!sc->wav_state.playing) return 0;
_cli();
soundblaster_update_wav_dma_position(sc,card);
soundblaster_update_wav_play_delay(sc,card);
_sti();
sndsb_stop_dsp_playback(card);
_cli();
sc->wav_state.playing = 0;
_sti();
return 0;
}
int probe_8259() {
unsigned char om,cm,c2;
unsigned int flags;
if (p8259_probed < 0)
return (int)p8259_probed;
/* don't let the BIOS fiddle with the mask during
the test. Fixes: Pentium machine where 1 out of
100 times programs fail with "cannot init PIC" */
flags = get_cpu_flags(); _cli();
om = p8259_read_mask(0);
p8259_write_mask(0,0xFF);
cm = p8259_read_mask(0);
p8259_write_mask(0,0x00);
c2 = p8259_read_mask(0);
p8259_write_mask(0,om);
set_cpu_flags(flags);
if (cm != 0xFF || c2 != 0x00)
return (p8259_probed=0);
/* is a slave present too? */
flags = get_cpu_flags(); _cli();
om = p8259_read_mask(8);
p8259_write_mask(8,0xFF);
cm = p8259_read_mask(8);
p8259_write_mask(8,0x00);
c2 = p8259_read_mask(8);
p8259_write_mask(8,om);
set_cpu_flags(flags);
if (cm == 0xFF && c2 == 0x00)
p8259_slave_present = 1;
return (p8259_probed=1);
}
void keDoSched()
{
uint32 i;
uint32 j;
_cli();
i=keSchedNextTask();
while(i==0xFFFFFFFF)
{
_sti();
_hlt();
_cli();
i=keSchedNextTask();
} // not any task can be sched
if(i==currentTaskId)
{
_sti();
return; // only the current task can be sched
}
j=currentTaskId;
currentTaskId=i;
_switch(&(tasks[i]->esp), &(tasks[j]->esp));
}
void _stdcall main(unsigned long p1, unsigned long p2, unsigned long p3)
{
uint32 *oldesp;
struct taskblock *task;
_cli();
cpuInit();
_ISRVECT[17]=(uint32)keDoSched;
_ISRVECT[32]=(uint32)keTimerIsr;
keKernelHeapInit();
keInitTaskSystem();
task=keNewTask("main", keEntryMain, 0, 8, 0x4000);
currentTaskId=0;
_switch(&(task->esp), &oldesp);
}
static int soundblaster_start_playback(soundcard_t sc) {
struct sndsb_ctx *card = soundblaster_get_sndsb_ctx(sc);
if (card == NULL) return -1;
if (!sc->wav_state.prepared) return -1;
if (sc->wav_state.playing) return 0;
if (!sndsb_begin_dsp_playback(card))
return -1;
_cli();
sc->wav_state.playing = 1;
_sti();
return 0;
}
void generalprotectintr(uint32 edi, uint32 esi, uint32 ebp, uint32 esp,
uint32 ebx, uint32 edx, uint32 ecx, uint32 eax,
uint32 code, uint32 eip, uint32 cs)
{
int i;
_cli();
printf("\nGeneral Protect Error\n");
printf("tid=%d\n", currentTaskId);
printf("eip=%08x ecs=%08x code=%08x\n", eip, cs, code);
printf("eax=%08x ebx=%08x ecx=%08x edx=%08x\n", eax, ebx, ecx, edx);
printf("esp=%08x ebp=%08x esi=%08x edi=%08x\n", esp, ebp, esi, edi);
printf("Dump Stack:\n");
for(i=0;i<16;i++)
printf("%08X ", ((uint32*)esp)[i+3]);
printf("Dump TCB:\n");
for(i=0;i<16;i++)
printf("%08X ", ((uint32*)tasks[currentTaskId])[i]);
while(1);
}
void direct_dac_test(void) {
unsigned long time,bytes;
unsigned char FAR *ptr;
unsigned int i,count;
unsigned int pc,c;
doubleprintf("Direct DAC playback test.\n");
/* FIXME: Why is the final rate SLOWER in DOSBox-X in 386 protected mode? */
sndsb_reset_dsp(sb_card);
sndsb_write_dsp(sb_card,0xD1); /* speaker on */
_cli();
time = 0;
bytes = 0;
c = read_8254(T8254_TIMER_INTERRUPT_TICK);
for (count=0;count < 3;count++) {
ptr = sb_dma->lin;
for (i=0;i < sb_dma->length;i++) {
sndsb_write_dsp(sb_card,SNDSB_DSPCMD_DIRECT_DAC_OUT); /* 0x10 */
sndsb_write_dsp(sb_card,*ptr++);
pc = c;
c = read_8254(T8254_TIMER_INTERRUPT_TICK);
time += (unsigned long)((pc - c) & 0xFFFFU); /* remember: it counts DOWN. assumes full 16-bit count */
}
bytes += sb_dma->length;
}
_sti();
if (time == 0UL) time = 1;
{
double t = (double)time / T8254_REF_CLOCK_HZ;
double rate = (double)bytes / t;
doubleprintf(" - %lu bytes played in %.3f seconds\n",(unsigned long)bytes,t);
doubleprintf(" - Sample rate is %.3fHz\n",rate);
}
}
void kernel_main(multiboot_info_t *mbi)
{
_cli();
init_video();
printk("=== Arcanum kernel ===\n");
printk("Chargement de la GDT... ");
gdt_init();
__pok();
printk("Chargement de l'IDT... ");
idt_init();
pic_init();
_clock = 0;
__pok();
printk("Activation des interruptions. \n");
_sti();
for(;;) {}
}
/* private */
static void soundblaster_update_wav_dma_position(soundcard_t sc,struct sndsb_ctx *card) {
_cli();
sc->wav_state.dma_position = sndsb_read_dma_buffer_position(card);
_sti();
}
int disableInts() {
int flags = gFlags();
/* Retorna si el I flag está on o no */
_cli();
return (flags & (0x1 << 9));
}
void pulse_width_test() {
int fd;
unsigned char cc;
unsigned int play;
unsigned char plan_b=0;
unsigned int patience = 10000;
_cli();
write_8254_system_timer(0xFFFF); /* BUGFIX: Personal experience tells me BIOSes would fail reading the floppy if the IRQ 0 timer isn't ticking along at 18Hz */
_sti();
fd = open("..\\test1_22.wav",O_RDONLY|O_BINARY);
if (fd < 0) fd = open("test1_22.wav",O_RDONLY|O_BINARY);
if (fd < 0) {
fprintf(stderr,"Cannot open test WAV\n");
return;
}
lseek(fd,44,SEEK_SET);
read(fd,tmp,sizeof(tmp));
for (play=0;play < sizeof(tmp);play++) tmp[play] = (((tmp[play]) * 53) / 255) + 1; /* add "noise" to dither */
close(fd);
/* set timer 0 to 54 ticks (1.191MHz / 54 ~ 22050Hz) */
_cli();
t8254_pc_speaker_set_gate(0);
write_8254_pc_speaker(1);
write_8254_system_timer(54);
_sti();
_cli();
{
outp(T8254_CONTROL_PORT,(0 << 6) | (0 << 4) | 0); /* latch counter N, counter latch read */
do {
if (--patience == 1) break;
cc = inp(T8254_TIMER_PORT(0));
inp(T8254_TIMER_PORT(0));
} while (cc < (54/2));
do {
if (--patience == 0) break;
cc = inp(T8254_TIMER_PORT(0));
inp(T8254_TIMER_PORT(0));
} while (cc >= (54/2));
if (patience <= 2) {
write_8254_system_timer(0xFFFF); /* BUGFIX: on very old slow machines, the 54-count tick can easily cause the printf() below to absolutely CRAWL... */
_sti();
fprintf(stderr,"Oops! Either your CPU is too fast or the timer countdown trick doesn't work.\n");
_cli();
write_8254_system_timer(54);
plan_b = 1;
}
}
_sti();
while (1) {
if (kbhit()) {
int c = getch();
if (c == 27) break;
}
if (plan_b) {
/* run with interrupts enabled, use IRQ0 to know when to tick */
_cli();
counter = 0;
t8254_pc_speaker_set_gate(3);
for (play=0;play < sizeof(tmp);) {
outp(T8254_CONTROL_PORT,(2 << 6) | (1 << 4) | (T8254_MODE_0_INT_ON_TERMINAL_COUNT << 1)); /* MODE 0, low byte only, counter 2 */
outp(T8254_TIMER_PORT(2),tmp[play]);
_sti();
while (counter == 0);
_cli();
play += counter;
counter = 0;
}
_sti();
}
else {
_cli();
t8254_pc_speaker_set_gate(3);
outp(T8254_CONTROL_PORT,(0 << 6) | (0 << 4) | 0); /* latch counter N, counter latch read */
for (play=0;play < sizeof(tmp);play++) {
outp(T8254_CONTROL_PORT,(2 << 6) | (1 << 4) | (T8254_MODE_0_INT_ON_TERMINAL_COUNT << 1)); /* MODE 0, low byte only, counter 2 */
outp(T8254_TIMER_PORT(2),tmp[play]);
do {
cc = inp(T8254_TIMER_PORT(0));
inp(T8254_TIMER_PORT(0));
} while (cc < (54/2));
do {
cc = inp(T8254_TIMER_PORT(0));
inp(T8254_TIMER_PORT(0));
} while (cc >= (54/2));
}
_sti();
}
}
t8254_pc_speaker_set_gate(0);
}
int main() {
struct t8254_readback_t readback;
t8254_time_t tick[3];
unsigned int i;
printf("8254 library test program\n");
if (!probe_8254()) {
printf("Chip not present. Your computer might be 2010-era hardware that dropped support for it.\n");
return 1;
}
if (!probe_8259()) {
printf("8259 interrupt controller not present. Your computer might be 2010-era hardware that dropped support for it.\n");
return 1;
}
printf("8254 base clock: %luHz\n",T8254_REF_CLOCK_HZ);
speaker_rate = T8254_REF_CLOCK_HZ / 400UL; /* 400Hz */
prev_irq0 = _dos_getvect(T8254_IRQ+0x08);
_dos_setvect(T8254_IRQ+0x8,irq0);
_cli();
write_8254_pc_speaker(speaker_rate);
write_8254_system_timer(max);
_sti();
#ifdef TARGET_PC98
/* PC-98 does not have IRQ0 running by default */
p8259_unmask(T8254_IRQ);
#endif
while (1) {
if (kbhit()) {
int c = getch();
if (c == 27)
break;
else if (c == '-') {
max -= 80;
if (max > (0xFFFF-80))
max = 0xFFFF;
_cli();
write_8254_system_timer(max);
_sti();
}
else if (c == '=') {
max += 110;
if (max < 110 || max > (0xFFFF-110))
max = 0xFFFF;
_cli();
write_8254_system_timer(max);
_sti();
}
/* play with timer 2 and the PC speaker gate */
else if (c == 'p') {
unsigned char on = (t8254_pc_speaker_read_gate() != 0) ? 1 : 0;
if (on) t8254_pc_speaker_set_gate(0);
else t8254_pc_speaker_set_gate(3);
}
else if (c == '1') {
#ifndef TARGET_PC98
unsigned char v = t8254_pc_speaker_read_gate();
t8254_pc_speaker_set_gate(v ^ PC_SPEAKER_OUTPUT_TTL_AND_GATE);
#endif
}
else if (c == '2') {
#ifndef TARGET_PC98
unsigned char v = t8254_pc_speaker_read_gate();
t8254_pc_speaker_set_gate(v ^ PC_SPEAKER_COUNTER_2_GATE);
#endif
}
else if (c == '[') {
speaker_rate += 110;
if (speaker_rate > (0xFFFF-110) || speaker_rate < 110)
speaker_rate = 0xFFFF;
write_8254_pc_speaker(speaker_rate);
}
else if (c == ']') {
speaker_rate -= 110;
if (speaker_rate > (0xFFFF-110))
speaker_rate = 0;
write_8254_pc_speaker(speaker_rate);
}
else if (c == 'w') {
printf("\n");
pulse_width_test();
_cli();
write_8254_system_timer(max);
_sti();
printf("\n");
}
else if (c == 'z') {
/* sleep-wait loop test */
unsigned long delay_ticks;
unsigned long z;
unsigned int c,cmax;
printf("\nDelay interval in us? ");
z = 1000000; scanf("%lu",&z);
delay_ticks = t8254_us2ticks(z);
printf(" %lu = %lu ticks\n",z,delay_ticks);
if (delay_ticks == 0UL) cmax = (unsigned int)(T8254_REF_CLOCK_HZ / 20UL);
else cmax = (unsigned int)(T8254_REF_CLOCK_HZ / 20UL / (unsigned long)delay_ticks);
if (cmax == 0) cmax = 1;
write_8254_pc_speaker(T8254_REF_CLOCK_HZ / 400UL); /* tick as fast as possible */
while (1) {
if (kbhit()) {
if (getch() == 27) break;
}
for (c=0;c < cmax;c++) {
t8254_pc_speaker_set_gate(3);
t8254_wait(delay_ticks);
t8254_pc_speaker_set_gate(0);
t8254_wait(delay_ticks);
}
}
}
else if (c == 'd') {
printf("\n \nDetail mode, hit 'd' again to exit: [WARNING: 8254 only]\n");
while (1) {
if (kbhit()) {
int c = getch();
if (c == 'd') {
break;
}
}
_cli();
readback_8254(T8254_READBACK_ALL,&readback);
_sti();
printf("\x0D");
for (i=0;i <= 2;i++) {
printf("[%u] stat=%02x count=%04x ",i,
readback.timer[i].status,
readback.timer[i].count);
}
fflush(stdout);
}
printf("\n");
}
}
for (i=0;i <= 2;i++) tick[i] = read_8254(i);
/* BUG: DOSBox/DOSBox-X appear to have a bug where the PC speaker readback toggles
* regardless of the GATE input to Counter 2. Bring GATE low (setting bit 1
* of port 61h to 0) is supposed to cause Counter 2 to stop. The AND gate
* after the output (bit 0 of port 61h) is not supposed to affect the readback. */
printf("\x0D %04x %04x %04x max=%04x count=%04x SPKR=%u",tick[0],tick[1],tick[2],
max,counter,read_8254_pc_speaker_output()!=0?1:0);
fflush(stdout);
}
printf("\n");
#ifdef TARGET_PC98
/* PC-98 does not have IRQ0 running by default */
p8259_mask(T8254_IRQ);
#endif
_cli();
write_8254_pc_speaker(0);
t8254_pc_speaker_set_gate(0);
_dos_setvect(T8254_IRQ+0x8,prev_irq0);
_sti();
write_8254_system_timer(0xFFFF); /* restore normal function to prevent BIOS from going crazy */
return 0;
}
/* this is used to probe for ports in standard locations, when we really don't know if it's there */
int probe_8250(uint16_t port) {
unsigned char ier,dlab1,dlab2,c,fcr;
struct info_8250 *inf;
if (already_got_8250_port(port))
return 0;
if (base_8250_full())
return 0;
inf = &info_8250_port[base_8250_ports];
inf->type = TYPE_8250_IS_8250;
inf->port = port;
inf->irq = -1;
if (windows_mode == WINDOWS_NONE || windows_mode == WINDOWS_REAL) {
/* in real-mode DOS we can play with the UART to our heart's content. so we play with the
* DLAB select and interrupt enable registers to detect the UART in a manner non-destructive
* to the hardware state. */
/* there's no way to autodetect the COM port's IRQ, we have to guess */
if (port == 0x3F8 || port == 0x3E8)
inf->irq = 4;
else if (port == 0x2F8 || port == 0x2E8)
inf->irq = 3;
/* switch registers 0+1 back to RX/TX and interrupt enable, and then test the Interrupt Enable register */
_cli();
outp(port+3,inp(port+3) & 0x7F);
if (inp(port+3) == 0xFF) { _sti(); return 0; }
ier = inp(port+1);
outp(port+1,0);
if (inp(port+1) == 0xFF) { _sti(); return 0; }
outp(port+1,ier);
if ((inp(port+1) & 0xF) != (ier & 0xF)) { _sti(); return 0; }
/* then switch 0+1 to DLAB (divisor registers) and see if values differ from what we read the first time */
outp(port+3,inp(port+3) | 0x80);
dlab1 = inp(port+0);
dlab2 = inp(port+1);
outp(port+0,ier ^ 0xAA);
outp(port+1,ier ^ 0x55);
if (inp(port+1) == ier || inp(port+0) != (ier ^ 0xAA) || inp(port+1) != (ier ^ 0x55)) {
outp(port+0,dlab1);
outp(port+1,dlab2);
outp(port+3,inp(port+3) & 0x7F);
_sti();
return 0;
}
outp(port+0,dlab1);
outp(port+1,dlab2);
outp(port+3,inp(port+3) & 0x7F);
/* now figure out what type */
fcr = inp(port+2);
outp(port+2,0xE7); /* write FCR */
c = inp(port+2); /* read IIR */
if (c & 0x40) { /* if FIFO */
if (c & 0x80) {
if (c & 0x20) inf->type = TYPE_8250_IS_16750;
else inf->type = TYPE_8250_IS_16550A;
}
else {
inf->type = TYPE_8250_IS_16550;
}
}
else {
unsigned char oscratch = inp(port+7);
/* no FIFO. try the scratch register */
outp(port+7,0x55);
if (inp(port+7) == 0x55) {
outp(port+7,0xAA);
if (inp(port+7) == 0xAA) {
outp(port+7,0x00);
if (inp(port+7) == 0x00) {
inf->type = TYPE_8250_IS_16450;
}
}
}
outp(port+7,oscratch);
}
outp(port+2,fcr);
_sti();
}
else {
unsigned int i;
/* if we were to actually do our self-test in a VM, Windows would mistakingly assume we
* were trying to use it and would allocate the port. we're just enumerating at this point.
* play it safe and assume it works if the port is listed as one of the BIOS ports.
* we also don't use interrupts. */
for (i=0;i < bios_8250_ports && port != get_8250_bios_port(i);) i++;
if (i >= bios_8250_ports) return 0;
}
base_8250_port[base_8250_ports++] = port;
return 1;
}
qword sys_addTimerEvent(qword timerEventFunc, qword interval, qword rcx, qword r8, qword r9){
_cli();
addTimerListener((timerEventT) timerEventFunc,interval);
_sti();
return 0;
}
void ess_sc_play_test(void) {
unsigned char bytespersample = wav_16bit ? 2 : 1;
unsigned long time,bytes,expect,tlen,timeout;
unsigned long count;
unsigned int pc,c;
unsigned long d;
uint32_t irqc;
if (!sb_card->ess_extensions || sb_card->ess_chipset == 0)
return;
doubleprintf("ESS688 single cycle DSP playback test (%u bit).\n",wav_16bit?16:8);
timeout = T8254_REF_CLOCK_HZ * 2UL;
for (count=0;count < 256;count++) {
if (count >= 128)
expect = 795500UL / (256 - count);
else
expect = 397700UL / (128 - count);
_cli();
if (sb_card->irq >= 8) {
p8259_OCW2(8,P8259_OCW2_SPECIFIC_EOI | (sb_card->irq & 7));
p8259_OCW2(0,P8259_OCW2_SPECIFIC_EOI | 2);
}
else if (sb_card->irq >= 0) {
p8259_OCW2(0,P8259_OCW2_SPECIFIC_EOI | sb_card->irq);
}
_sti();
tlen = expect; // 1 sec
if (tlen > (sb_card->buffer_size / (unsigned long)bytespersample)) tlen = sb_card->buffer_size / (unsigned long)bytespersample;
/* NTS: We ask the card to use demand ISA, 4 bytes at a time.
* Behavior observed on real hardware, is that if you set up
* DMA this way and then set up a non-auto-init DMA transfer
* that isn't a multiple of 4, the DMA will stop short of
* the full transfer and the IRQ will never fire. Therefore
* the transfer length must be a multiple of 4! */
tlen -= tlen & 3;
if (tlen == 0) tlen = 4;
sb_card->buffer_dma_started_length = tlen * (unsigned long)bytespersample;
sb_card->buffer_dma_started = 0;
sndsb_reset_dsp(sb_card);
sndsb_write_dsp(sb_card,0xD1); /* speaker on */
sndsb_ess_set_extended_mode(sb_card,1/*enable*/);
sndsb_setup_dma(sb_card);
irqc = sb_card->irq_counter;
{
/* ESS 688/1869 chipset specific DSP playback.
using this mode bypasses a lot of the Sound Blaster Pro emulation
and restrictions and allows us to run up to 48KHz 16-bit stereo */
unsigned short t16;
int b;
_cli();
/* clear IRQ */
sndsb_interrupt_ack(sb_card,3);
b = 0x00; /* DMA disable */
b |= 0x00; /* no auto-init */
b |= 0x00; /* [3]=DMA converter in ADC mode [1]=DMA read for ADC playback mode */
sndsb_ess_write_controller(sb_card,0xB8,b);
b = sndsb_ess_read_controller(sb_card,0xA8);
b &= ~0xB; /* clear mono/stereo and record monitor (bits 3, 1, and 0) */
b |= 2; /* mono 10=mono 01=stereo */
sndsb_ess_write_controller(sb_card,0xA8,b);
/* NTS: The meaning of bits 1:0 in register 0xB9
*
* 00 single DMA transfer mode
* 01 demand DMA transfer mode, 2 bytes/request
* 10 demand DMA transfer mode, 4 bytes/request
* 11 reserved
*
* NOTES on what happens if you set bits 1:0 (DMA transfer type) to the "reserved" 11 value:
*
* ESS 688 (Sharp laptop) Nothing, apparently. Treated the same as 4 bytes/request
*
* ESS 1887 (Compaq Presario) Triggers a hardware bug where the chip appears to fetch
* 3 bytes per demand transfer but then only handle 1 byte,
* which translates to audio playing at 3x the sample rate
* it should be. NOT because the DAC is running any faster,
* but because the chip is only playing back every 3rd sample!
* This play only 3rds behavior is consistent across 8/16-bit
* PCM and mono/stereo.
*/
b = 2; /* demand transfer DMA 4 bytes per request */
sndsb_ess_write_controller(sb_card,0xB9,b);
sndsb_ess_write_controller(sb_card,0xA1,count);
/* effectively disable the lowpass filter (NTS: 0xFF mutes the audio, apparently) */
sndsb_ess_write_controller(sb_card,0xA2,0xFE);
t16 = -(tlen * (uint16_t)bytespersample); /* DMA transfer count reload register value is 2's complement of length */
sndsb_ess_write_controller(sb_card,0xA4,t16); /* DMA transfer count low */
sndsb_ess_write_controller(sb_card,0xA5,t16>>8); /* DMA transfer count high */
b = sndsb_ess_read_controller(sb_card,0xB1);
b &= ~0xA0; /* clear compat game IRQ, fifo half-empty IRQs */
b |= 0x50; /* set overflow IRQ, and "no function" */
sndsb_ess_write_controller(sb_card,0xB1,b);
b = sndsb_ess_read_controller(sb_card,0xB2);
b &= ~0xA0; /* clear compat */
b |= 0x50; /* set DRQ/DACKB inputs for DMA */
sndsb_ess_write_controller(sb_card,0xB2,b);
b = 0x51; /* enable FIFO+DMA, reserved, load signal */
b |= wav_16bit ? 0x20 : 0x00; /* signed complement mode or not */
sndsb_ess_write_controller(sb_card,0xB7,b);
b = 0x90; /* enable FIFO+DMA, reserved, load signal */
b |= wav_16bit ? 0x20 : 0x00; /* signed complement mode or not */
b |= 0x40; /* [3]=stereo [6]=!stereo */
b |= wav_16bit ? 0x04 : 0x00; /* [2]=16bit */
sndsb_ess_write_controller(sb_card,0xB7,b);
b = sndsb_ess_read_controller(sb_card,0xB8);
sndsb_ess_write_controller(sb_card,0xB8,b | 1);
}
_cli();
c = read_8254(T8254_TIMER_INTERRUPT_TICK);
bytes = tlen;
time = 0;
_sti();
while (1) {
if (irqc != sb_card->irq_counter)
break;
_cli();
pc = c;
c = read_8254(T8254_TIMER_INTERRUPT_TICK);
time += (unsigned long)((pc - c) & 0xFFFFU); /* remember: it counts DOWN. assumes full 16-bit count */
_sti();
if (time >= timeout) goto x_timeout;
}
x_complete:
if (time == 0UL) time = 1;
{
int b;
b = sndsb_ess_read_controller(sb_card,0xB8);
if (b != -1) {
b &= ~0x01; /* stop DMA */
sndsb_ess_write_controller(sb_card,0xB8,b);
}
}
{
double t = (double)time / T8254_REF_CLOCK_HZ;
double rate = (double)bytes / t;
doubleprintf(" - TC 0x%02lX: expecting %luHz, %lu%c/%.3fs @ %.3fHz\n",count,expect,(unsigned long)bytes,wav_16bit?'w':'b',t,rate);
}
if (kbhit()) {
if (getch() == 27)
break;
}
continue;
x_timeout:
d = d8237_read_count(sb_card->dma8) / (unsigned long)bytespersample; /* counts DOWNWARD */
if (d > tlen) d = 0; /* terminal count */
d = tlen - d;
if (irqc == sb_card->irq_counter && d == 0) bytes = 0; /* nothing happened if no IRQ and counter never changed */
else if (bytes > d) bytes = d;
goto x_complete;
}
_cli();
if (sb_card->irq >= 8) {
p8259_OCW2(8,P8259_OCW2_SPECIFIC_EOI | (sb_card->irq & 7));
p8259_OCW2(0,P8259_OCW2_SPECIFIC_EOI | 2);
}
else if (sb_card->irq >= 0) {
p8259_OCW2(0,P8259_OCW2_SPECIFIC_EOI | sb_card->irq);
}
_sti();
sndsb_reset_dsp(sb_card);
}
void sb16_sc_play_test(void) {
unsigned char bytespersample = wav_16bit ? 2 : 1;
unsigned long time,bytes,expect,tlen,timeout;
unsigned long count;
unsigned int pc,c;
unsigned long d;
uint32_t irqc;
int dma;
if (wav_16bit && sb_card->dma16 >= 4)
dma = sb_card->dma16;
else
dma = sb_card->dma8;
if (sb_card->dsp_vmaj >= 4) /* Sound Blaster 16 */
{ }
else if (sb_card->is_gallant_sc6600) /* Reveal SC-4000 / Gallant SC-6600 */
{ }
else
return;
doubleprintf("SB16 4.x single cycle DSP playback test (%u bit).\n",wav_16bit?16:8);
timeout = T8254_REF_CLOCK_HZ * 2UL;
count = 0;
do {
expect = count;
_cli();
if (sb_card->irq >= 8) {
p8259_OCW2(8,P8259_OCW2_SPECIFIC_EOI | (sb_card->irq & 7));
p8259_OCW2(0,P8259_OCW2_SPECIFIC_EOI | 2);
}
else if (sb_card->irq >= 0) {
p8259_OCW2(0,P8259_OCW2_SPECIFIC_EOI | sb_card->irq);
}
_sti();
tlen = expect; // 1 sec
if (tlen < 4000UL) tlen = 4000UL;
if (tlen > (sb_card->buffer_size / (unsigned long)bytespersample)) tlen = sb_card->buffer_size / (unsigned long)bytespersample;
sb_card->buffer_dma_started_length = tlen * (unsigned long)bytespersample;
sb_card->buffer_dma_started = 0;
sndsb_reset_dsp(sb_card);
sndsb_write_dsp(sb_card,0xD1); /* speaker on */
sndsb_setup_dma(sb_card);
irqc = sb_card->irq_counter;
sndsb_write_dsp_outrate(sb_card,count);
_cli();
c = read_8254(T8254_TIMER_INTERRUPT_TICK);
bytes = tlen;
time = 0;
_sti();
{
unsigned int lv = (unsigned int)(tlen - 1UL);
/* NTS: Reveal SC-4000 (Gallant 6600) cards DO support SB16 but only specific commands.
* Command 0xC0 is not recognized, but command 0xC6 works. */
if (wav_16bit) {
if (sb_card->is_gallant_sc6600)
sndsb_write_dsp(sb_card,SNDSB_DSPCMD_SB16_AUTOINIT_DMA_DAC_OUT_16BIT); /* 0xB6 */
else
sndsb_write_dsp(sb_card,SNDSB_DSPCMD_SB16_DMA_DAC_OUT_16BIT); /* 0xB0 */
sndsb_write_dsp(sb_card,0x10); /* mode (16-bit signed PCM) */
}
else {
if (sb_card->is_gallant_sc6600)
sndsb_write_dsp(sb_card,SNDSB_DSPCMD_SB16_AUTOINIT_DMA_DAC_OUT_8BIT); /* 0xC6 */
else
sndsb_write_dsp(sb_card,SNDSB_DSPCMD_SB16_DMA_DAC_OUT_8BIT); /* 0xC0 */
sndsb_write_dsp(sb_card,0x00); /* mode (8-bit unsigned PCM) */
}
sndsb_write_dsp(sb_card,lv);
sndsb_write_dsp(sb_card,lv >> 8);
}
while (1) {
if (irqc != sb_card->irq_counter)
break;
_cli();
pc = c;
c = read_8254(T8254_TIMER_INTERRUPT_TICK);
time += (unsigned long)((pc - c) & 0xFFFFU); /* remember: it counts DOWN. assumes full 16-bit count */
_sti();
if (time >= timeout) goto x_timeout;
}
x_complete:
if (time == 0UL) time = 1;
{
double t = (double)time / T8254_REF_CLOCK_HZ;
double rate = (double)bytes / t;
doubleprintf(" - Rate 0x%04lX: expecting %luHz, %lu%c/%.3fs @ %.3fHz\n",count,expect,(unsigned long)bytes,wav_16bit?'w':'b',t,rate);
}
if (kbhit()) {
if (getch() == 27)
break;
}
count += 0x80; /* count by 128 because enumerating all would take too long */
if (count > 0xFFFFUL) break;
continue;
x_timeout:
d = d8237_read_count(dma) / (unsigned long)bytespersample; /* counts DOWNWARD */
if (d > tlen) d = 0; /* terminal count */
d = tlen - d;
if (irqc == sb_card->irq_counter && d == 0) bytes = 0; /* nothing happened if no IRQ and counter never changed */
else if (bytes > d) bytes = d;
goto x_complete;
} while (1);
_cli();
if (sb_card->irq >= 8) {
p8259_OCW2(8,P8259_OCW2_SPECIFIC_EOI | (sb_card->irq & 7));
p8259_OCW2(0,P8259_OCW2_SPECIFIC_EOI | 2);
}
else if (sb_card->irq >= 0) {
p8259_OCW2(0,P8259_OCW2_SPECIFIC_EOI | sb_card->irq);
}
_sti();
sndsb_reset_dsp(sb_card);
sndsb_write_dsp_outrate(sb_card,8000U);
}
int main(int argc,char *argv[],char *envp[]) {
rdtsc_t start,measure,ticks_per_sec;
unsigned char force = 0;
double t;
int c;
{
int i = 1;
char *a;
while (i < argc) {
a = argv[i++];
if (*a == '-') {
do { a++; } while (*a == '-');
if (!strcmp(a,"f") || !strcmp(a,"force"))
force = 1;
else
return 1;
}
else {
return 1;
}
}
}
cpu_probe();
printf("Your CPU is basically a %s or higher\n",cpu_basic_level_to_string(cpu_basic_level));
if (cpu_v86_active)
printf(" - Your CPU is currently running me in virtual 8086 mode\n");
if (force) {
printf(" - You're forcing me to use RDTSC. I may crash if your CPU doesn't\n");
printf(" support it or the environment doesn't enable it.\n");
printf(" OK! Here we go....!\n");
}
else {
if (!(cpu_flags & CPU_FLAG_CPUID)) {
printf(" - Your CPU doesn't support CPUID, how can it support RDTSC?\n");
return 1;
}
if (!(cpu_cpuid_features.a.raw[2] & 0x10)) {
printf(" - Your CPU does not support RDTSC\n");
return 1;
}
if (cpu_flags & CPU_FLAG_DONT_USE_RDTSC) {
printf(" - Your CPU does support RDTSC but it's not recommended in this environment.\n");
printf(" This is usually due to running a 16-bit build in pure DOS under EMM386.EXE.\n");
return 1;
}
}
#if defined(TARGET_OS2)
# if TARGET_MSDOS == 32
/* OS/2 32-bit: We can use DosQuerySysInfo() */
printf("Measuring CPU speed, using DosQuerySysInfo(), over 3 seconds\n");
{
ULONG startTick,tmp;
start = cpu_rdtsc();
startTick = GetMsCount();
do { tmp = GetMsCount();
} while ((tmp - startTick) < 3000); /* NTS: <- I know this rolls over in 49 days,
the math though should overflow the 32-bit integer and produce correct results anyway */
measure = cpu_rdtsc();
/* use the precise tick count to better compute ticks_per_sec */
ticks_per_sec = ((measure - start) * 1000ULL) / ((rdtsc_t)(tmp - startTick));
printf("Measurement: %lums = %lld ticks\n",tmp - startTick,(int64_t)ticks_per_sec);
printf(" From 0x%llX to 0x%llX\n",start,measure);
}
# else
/* OS/2 16-bit: There is no API (that I know of) to get tick count. Use system clock. */
printf("Measuring CPU speed, using system clock with 1-second resolution, across 3 seconds\n");
{
time_t startTick,tmp;
/* wait for the immediate start of a one-second tick, then record RDTSC and count until 3 seconds */
startTick = time(NULL);
do { tmp = time(NULL); } while (tmp == startTick);
start = cpu_rdtsc(); startTick = tmp;
/* NOW! Count 3 seconds and measure CPU ticks */
do { tmp = time(NULL);
} while ((tmp - startTick) < 3);
measure = cpu_rdtsc();
/* use the precise tick count to better compute ticks_per_sec */
ticks_per_sec = ((measure - start) * 1ULL) / ((rdtsc_t)(tmp - startTick));
printf("Measurement: %lu seconds = %lld ticks\n",tmp - startTick,(int64_t)ticks_per_sec);
printf(" From 0x%llX to 0x%llX\n",start,measure);
}
# endif
#elif defined(TARGET_WINDOWS)
# if TARGET_MSDOS == 16
/* Windows 2.x/3.0/3.1: Use GetTickCount() or
* Windows 3.1: Use TOOLHELP.DLL TimerCount() which is more accurate (really?) */
if (ToolHelpInit()) {
TIMERINFO ti;
ti.dwSize = sizeof(ti);
printf("Measuring CPU speed, using TOOLHELP TimerCount() over 1 second\n");
{
DWORD startTick,tmp;
start = cpu_rdtsc();
if (!__TimerCount(&ti)) {
printf("TimerCount() failed\n");
return 1;
}
startTick = ti.dwmsSinceStart;
do {
# if defined(WIN_STDOUT_CONSOLE)
_win_pump(); /* <- you MUST call this. The message pump must run, or else the timer won't advance and this loop will run forever.
The fact that GetTickCount() depends on a working message pump under Windows 3.1 seems to be a rather serious
oversight on Microsoft's part. Note that the problem described here does not apply to Windows 9x/ME. Also note
the Toolhelp function TimerCount() relies on GetTickCount() as a basic for time (though Toolhelp uses VxD services
or direct I/O port hackery to refine the timer count) */
# endif
if (!__TimerCount(&ti)) {
printf("TimerCount() failed\n");
return 1;
}
tmp = ti.dwmsSinceStart;
} while ((tmp - startTick) < 1000); /* NTS: <- I know this rolls over in 49 days,
the math though should overflow the 32-bit integer and produce correct results anyway */
measure = cpu_rdtsc();
/* use the precise tick count to better compute ticks_per_sec */
ticks_per_sec = ((measure - start) * 1000ULL) / ((rdtsc_t)(tmp - startTick));
printf("Measurement: %lums = %lld ticks\n",tmp - startTick,(int64_t)ticks_per_sec);
printf(" From 0x%llX to 0x%llX\n",start,measure);
}
}
else {
# else
{
# endif
printf("Measuring CPU speed, using GetTickCount() over 3 second\n");
{
DWORD startTick,tmp;
start = cpu_rdtsc();
startTick = GetTickCount();
/* NTS: Dunno yet about Windows 3.1, but Windows 95 seems to require we Yield(). If we don't, the GetTickCount() return
* value never updates and we're forever stuck in a loop. */
do {
# if defined(WIN_STDOUT_CONSOLE)
_win_pump(); /* <- you MUST call this. The message pump must run, or else the timer won't advance and this loop will run forever.
The fact that GetTickCount() depends on a working message pump under Windows 3.1 seems to be a rather serious
oversight on Microsoft's part. Note that the problem described here does not apply to Windows 9x/ME */
# endif
tmp = GetTickCount();
} while ((tmp - startTick) < 3000); /* NTS: <- I know this rolls over in 49 days,
the math though should overflow the 32-bit integer and produce correct results anyway */
measure = cpu_rdtsc();
/* use the precise tick count to better compute ticks_per_sec */
ticks_per_sec = ((measure - start) * 1000ULL) / ((rdtsc_t)(tmp - startTick));
printf("Measurement: %lums = %lld ticks\n",tmp - startTick,(int64_t)ticks_per_sec);
printf(" From 0x%llX to 0x%llX\n",start,measure);
}
}
#else
/* MS-DOS: Init the 8254 timer library for precise measurement */
if (!probe_8254()) {
printf("Cannot init 8254 timer\n");
return 1;
}
/* DOSBox-X and most motherboards leave the PIT in a mode that counts down by 2.
* Our code sets the counter and puts it in a mode that counts down by 1.
* We have to do this or our wait functions exit in half the time (which explains
* why testing this code in DOSBox-X often comes up with RDTSC running at 2x
* normal speed. */
write_8254_system_timer(0); /* 18.2 tick/sec on our terms (proper PIT mode) */
printf("Measuring CPU speed (relative to 8254 timer)\n");
_cli();
start = cpu_rdtsc();
t8254_wait(t8254_us2ticks(1000000));
measure = cpu_rdtsc();
_sti();
printf("Measurement: 1 sec = %lld ticks\n",(int64_t)(measure - start));
printf(" From 0x%llX to 0x%llX\n",start,measure);
ticks_per_sec = (measure - start);
#endif
if ((int64_t)ticks_per_sec < 0) {
printf("Cannot determine CPU cycle count\n");
ticks_per_sec = 100000ULL;
}
while (1) {
measure = cpu_rdtsc();
t = (double)((int64_t)(measure - start));
t /= ticks_per_sec;
printf("\x0D" "0x%llX = %.3f ",measure,t);
#if !defined(WINFCON_STOCK_WIN_MAIN)
fflush(stdout); /* FIXME: The fake console code should intercept fflush() too */
#endif
if (kbhit()) {
c = getch();
if (c == 0) c = getch() << 8;
if (c == 27)
break;
else if (c == 'r' || c == 'R') {
if (c == 'r' || (cpu_flags & CPU_FLAG_DONT_WRITE_RDTSC)) {
printf("\nI am not able to write the TSC register within this environment\nYou can force me by typing SHIFT+R, don't blame me when I crash...\n");
}
else {
printf("\nUsing MSR to reset TSC to 0\n");
/* demonstrating WRMSR to write the TSC (yes, you can!) */
cpu_rdtsc_write(start = 0ULL);
printf("Result: 0x%llX\n",cpu_rdtsc());
}
}
else if (c == 's') {
if (c == 's' && (cpu_flags & CPU_FLAG_DONT_WRITE_RDTSC)) {
printf("\nI am not able to write the TSC register within this environment\nYou can force me by typing SHIFT+S, don't blame me when I crash...\n");
}
else {
printf("\nUsing MSR to reset TSC to 0x123456789ABCDEF\n");
/* demonstrating WRMSR to write the TSC (yes, you can!) */
cpu_rdtsc_write(start = 0x123456789ABCDEFULL);
printf("Result: 0x%llX\n",cpu_rdtsc());
}
}
}
}
printf("\n");
return 0;
}
void sb1_sc_play_adpcm2_test(void) {
unsigned long time,bytes,expect,tlen,timeout;
unsigned int count;
unsigned int pc,c;
unsigned long d;
uint32_t irqc;
doubleprintf("SB 1.x ADPCM 2-bit single cycle DSP playback test.\n");
timeout = T8254_REF_CLOCK_HZ * 4UL;
for (count=0;count < 256;count++) {
expect = 1000000UL / (unsigned long)(256 - count);
_cli();
if (sb_card->irq >= 8) {
p8259_OCW2(8,P8259_OCW2_SPECIFIC_EOI | (sb_card->irq & 7));
p8259_OCW2(0,P8259_OCW2_SPECIFIC_EOI | 2);
}
else if (sb_card->irq >= 0) {
p8259_OCW2(0,P8259_OCW2_SPECIFIC_EOI | sb_card->irq);
}
_sti();
tlen = (expect / 4UL) + 1; // 1 sec
if (tlen > sb_card->buffer_size) tlen = sb_card->buffer_size;
sb_card->buffer_dma_started_length = tlen;
sb_card->buffer_dma_started = 0;
sndsb_reset_dsp(sb_card);
sndsb_write_dsp(sb_card,0xD1); /* speaker on */
sndsb_setup_dma(sb_card);
irqc = sb_card->irq_counter;
sndsb_write_dsp_timeconst(sb_card,count);
_cli();
c = read_8254(T8254_TIMER_INTERRUPT_TICK);
bytes = tlen;
time = 0;
_sti();
{
unsigned int lv = (unsigned int)(tlen - 1UL);
sndsb_write_dsp(sb_card,SNDSB_DSPCMD_DMA_DAC_OUT_ADPCM_2BIT_REF); /* 0x17 */
sndsb_write_dsp(sb_card,lv);
sndsb_write_dsp(sb_card,lv >> 8);
}
while (1) {
if (irqc != sb_card->irq_counter)
break;
_cli();
pc = c;
c = read_8254(T8254_TIMER_INTERRUPT_TICK);
time += (unsigned long)((pc - c) & 0xFFFFU); /* remember: it counts DOWN. assumes full 16-bit count */
_sti();
if (time >= timeout) goto x_timeout;
}
x_complete:
if (time == 0UL) time = 1;
{
double t = (double)time / T8254_REF_CLOCK_HZ;
double rate = (double)(((bytes - 1UL) * 4UL) + 1UL) / t; /* 4 samples/byte + 1 reference */
doubleprintf(" - TC 0x%02X: expecting %luHz, %lub/%.3fs @ %.3fHz\n",count,expect,(unsigned long)bytes,t,rate);
}
if (kbhit()) {
if (getch() == 27)
break;
}
continue;
x_timeout:
d = d8237_read_count(sb_card->dma8); /* counts DOWNWARD */
if (d > tlen) d = 0; /* terminal count */
d = tlen - d;
if (irqc == sb_card->irq_counter && d == 0) bytes = 0; /* nothing happened if no IRQ and counter never changed */
else if (bytes > d) bytes = d;
goto x_complete;
}
_cli();
if (sb_card->irq >= 8) {
p8259_OCW2(8,P8259_OCW2_SPECIFIC_EOI | (sb_card->irq & 7));
p8259_OCW2(0,P8259_OCW2_SPECIFIC_EOI | 2);
}
else if (sb_card->irq >= 0) {
p8259_OCW2(0,P8259_OCW2_SPECIFIC_EOI | sb_card->irq);
}
_sti();
sndsb_write_dsp_timeconst(sb_card,0x83); /* 8000Hz */
sndsb_reset_dsp(sb_card);
}
qword sys_removeTimerEvent(qword timerEventFunc, qword rdx, qword rcx, qword r8, qword r9) {
_cli();
deleteTimerListener((timerEventT) timerEventFunc);
_sti();
return 0;
}
