//
// Originally by David Raingeard
// GCC/SDL port by Niels Wagenaar (Linux/WIN32) and Carwin Jones (BeOS)
-// Cleanups/rewrites/fixes by James L. Hammons
+// Cleanups/rewrites/fixes by James Hammons
//
-// JLH = James L. Hammons
+// JLH = James Hammons <jlhamm@acm.org>
//
// WHO WHEN WHAT
// --- ---------- -----------------------------------------------------------
#include "jaguar.h"
#include "joystick.h"
#include "log.h"
-#include "m68k.h"
+#include "m68000/m68kinterface.h"
+#include "settings.h"
#include "tom.h"
//#include "memory.h"
#include "wavetable.h"
//Note that 44100 Hz requires samples every 22.675737 usec.
-#define NEW_TIMER_SYSTEM
//#define JERRY_DEBUG
-/*static*/ uint8 jerry_ram_8[0x10000];
+/*static*/ uint8_t jerry_ram_8[0x10000];
//#define JERRY_CONFIG 0x4002 // ??? What's this ???
-uint8 analog_x, analog_y;
+uint8_t analog_x, analog_y;
-static uint32 JERRYPIT1Prescaler;
-static uint32 JERRYPIT1Divider;
-static uint32 JERRYPIT2Prescaler;
-static uint32 JERRYPIT2Divider;
-static int32 jerry_timer_1_counter;
-static int32 jerry_timer_2_counter;
+static uint32_t JERRYPIT1Prescaler;
+static uint32_t JERRYPIT1Divider;
+static uint32_t JERRYPIT2Prescaler;
+static uint32_t JERRYPIT2Divider;
+static int32_t jerry_timer_1_counter;
+static int32_t jerry_timer_2_counter;
-uint32 JERRYI2SInterruptDivide = 8;
-int32 JERRYI2SInterruptTimer = -1;
-uint32 jerryI2SCycles;
-uint32 jerryIntPending;
+//uint32_t JERRYI2SInterruptDivide = 8;
+int32_t JERRYI2SInterruptTimer = -1;
+uint32_t jerryI2SCycles;
+uint32_t jerryIntPending;
+
+static uint16_t jerryInterruptMask = 0;
+static uint16_t jerryPendingInterrupt = 0;
-static uint16 jerryInterruptMask = 0;
-static uint16 jerryPendingInterrupt = 0;
// Private function prototypes
void JERRYResetPIT1(void);
void JERRYPIT2Callback(void);
void JERRYI2SCallback(void);
-//This approach is probably wrong, since the timer is continuously counting down, though
-//it might only be a problem if the # of interrupts generated is greater than 1--the M68K's
-//timeslice should be running during that phase... (The DSP needs to be aware of this!)
-
-//This is only used by the old system, so once the new timer system is working this
-//should be safe to nuke.
-void JERRYI2SExec(uint32 cycles)
-{
-#ifndef NEW_TIMER_SYSTEM
-#warning "externed var in source--should be in header file. !!! FIX !!!"
- extern uint16 serialMode; // From DAC.CPP
- if (serialMode & 0x01) // INTERNAL flag (JERRY is master)
- {
-
- // Why is it called this? Instead of SCLK? Shouldn't this be read from DAC.CPP???
-//Yes, it should. !!! FIX !!!
- JERRYI2SInterruptDivide &= 0xFF;
-
- if (JERRYI2SInterruptTimer == -1)
- {
- // We don't have to divide the RISC clock rate by this--the reason is a bit
- // convoluted. Will put explanation here later...
-// What's needed here is to find the ratio of the frequency to the number of clock cycles
-// in one second. For example, if the sample rate is 44100, we divide the clock rate by
-// this: 26590906 / 44100 = 602 cycles.
-// Which means, every 602 cycles that go by we have to generate an interrupt.
- jerryI2SCycles = 32 * (2 * (JERRYI2SInterruptDivide + 1));
- }
-
- JERYI2SInterruptTimer -= cycles;
- if (JERRYI2SInterruptTimer <= 0)
- {
-//This is probably wrong as well (i.e., need to check enable lines)... !!! FIX !!!
- DSPSetIRQLine(DSPIRQ_SSI, ASSERT_LINE);
- JERRYI2SInterruptTimer += jerryI2SCycles;
-#ifdef JERRY_DEBUG
- if (JERRYI2SInterruptTimer < 0)
- WriteLog("JERRY: Missed generating an interrupt (missed %u)!\n", (-JERRYI2SInterruptTimer / jerryI2SCycles) + 1);
-#endif
- }
- }
- else // JERRY is slave to external word clock
- {
- // This is just a temporary kludge to see if the CD bus mastering works
- // I.e., this is totally faked...!
-// The whole interrupt system is pretty much borked and is need of an overhaul.
-// What we need is a way of handling these interrupts when they happen instead of
-// scanline boundaries the way it is now.
- JERRYI2SInterruptTimer -= cycles;
- if (JERRYI2SInterruptTimer <= 0)
- {
-//This is probably wrong as well (i.e., need to check enable lines)... !!! FIX !!! [DONE]
- if (ButchIsReadyToSend())//Not sure this is right spot to check...
- {
-// return GetWordFromButchSSI(offset, who);
- SetSSIWordsXmittedFromButch();
- DSPSetIRQLine(DSPIRQ_SSI, ASSERT_LINE);
- }
- JERRYI2SInterruptTimer += 602;
- }
- }
-#else
- RemoveCallback(JERRYI2SCallback);
- JERRYI2SCallback();
-#endif
-}
-
-//NOTE: This is only used by the old execution core. Safe to nuke once it's stable.
-void JERRYExecPIT(uint32 cycles)
-{
-//This is wrong too: Counters are *always* spinning! !!! FIX !!! [DONE]
-// if (jerry_timer_1_counter)
- jerry_timer_1_counter -= cycles;
-
- if (jerry_timer_1_counter <= 0)
- {
-//Also, it can generate a CPU interrupt as well... !!! FIX !!! or does it? Maybe it goes Timer->GPU->CPU?
- DSPSetIRQLine(DSPIRQ_TIMER0, ASSERT_LINE); // This does the 'IRQ enabled' checking...
-// JERRYResetPIT1();
- jerry_timer_1_counter += (JERRYPIT1Prescaler + 1) * (JERRYPIT1Divider + 1);
- }
-
-//This is wrong too: Counters are *always* spinning! !!! FIX !!! [DONE]
-// if (jerry_timer_2_counter)
- jerry_timer_2_counter -= cycles;
-
- if (jerry_timer_2_counter <= 0)
- {
-//Also, it can generate a CPU interrupt as well... !!! FIX !!! or does it? Maybe it goes Timer->GPU->CPU?
- DSPSetIRQLine(DSPIRQ_TIMER1, ASSERT_LINE); // This does the 'IRQ enabled' checking...
-// JERRYResetPIT2();
- jerry_timer_2_counter += (JERRYPIT2Prescaler + 1) * (JERRYPIT2Divider + 1);
- }
-}
void JERRYResetI2S(void)
{
//WriteLog("i2s: reseting\n");
//This is really SCLK... !!! FIX !!!
- JERRYI2SInterruptDivide = 8;
+ sclk = 8;
JERRYI2SInterruptTimer = -1;
}
+
void JERRYResetPIT1(void)
{
-#ifndef NEW_TIMER_SYSTEM
-/* if (!JERRYPIT1Prescaler || !JERRYPIT1Divider)
- jerry_timer_1_counter = 0;
- else//*/
-//Small problem with this approach: Overflow if both are = $FFFF. !!! FIX !!!
- jerry_timer_1_counter = (JERRYPIT1Prescaler + 1) * (JERRYPIT1Divider + 1);
-
-// if (jerry_timer_1_counter)
-// WriteLog("jerry: reseting timer 1 to 0x%.8x (%i)\n",jerry_timer_1_counter,jerry_timer_1_counter);
-
-#else
RemoveCallback(JERRYPIT1Callback);
if (JERRYPIT1Prescaler | JERRYPIT1Divider)
{
double usecs = (float)(JERRYPIT1Prescaler + 1) * (float)(JERRYPIT1Divider + 1) * RISC_CYCLE_IN_USEC;
- SetCallbackTime(JERRYPIT1Callback, usecs);
+ SetCallbackTime(JERRYPIT1Callback, usecs, EVENT_JERRY);
}
-#endif
}
+
void JERRYResetPIT2(void)
{
-#ifndef NEW_TIMER_SYSTEM
-/* if (!JERRYPIT2Prescaler || !JERRYPIT2Divider)
- {
- jerry_timer_2_counter = 0;
- return;
- }
- else//*/
- jerry_timer_2_counter = (JERRYPIT2Prescaler + 1) * (JERRYPIT2Divider + 1);
-
-// if (jerry_timer_2_counter)
-// WriteLog("jerry: reseting timer 2 to 0x%.8x (%i)\n",jerry_timer_2_counter,jerry_timer_2_counter);
-
-#else
RemoveCallback(JERRYPIT2Callback);
if (JERRYPIT1Prescaler | JERRYPIT1Divider)
{
double usecs = (float)(JERRYPIT2Prescaler + 1) * (float)(JERRYPIT2Divider + 1) * RISC_CYCLE_IN_USEC;
- SetCallbackTime(JERRYPIT2Callback, usecs);
+ SetCallbackTime(JERRYPIT2Callback, usecs, EVENT_JERRY);
}
-#endif
}
+
// This is the cause of the regressions in Cybermorph and Missile Command 3D...
// Solution: Probably have to check the DSP enable bit before sending these thru.
//#define JERRY_NO_IRQS
JERRYResetPIT1();
}
+
void JERRYPIT2Callback(void)
{
#ifndef JERRY_NO_IRQS
JERRYResetPIT2();
}
+
void JERRYI2SCallback(void)
{
- // Why is it called this? Instead of SCLK? Shouldn't this be read from DAC.CPP???
-//Yes, it should. !!! FIX !!!
-#warning "Why is it called this? Instead of SCLK? Shouldn't this be read from DAC.CPP??? Yes, it should. !!! FIX !!!"
- JERRYI2SInterruptDivide &= 0xFF;
// We don't have to divide the RISC clock rate by this--the reason is a bit
// convoluted. Will put explanation here later...
// What's needed here is to find the ratio of the frequency to the number of clock cycles
// in one second. For example, if the sample rate is 44100, we divide the clock rate by
// this: 26590906 / 44100 = 602 cycles.
// Which means, every 602 cycles that go by we have to generate an interrupt.
- jerryI2SCycles = 32 * (2 * (JERRYI2SInterruptDivide + 1));
-
-//This should be in this file with an extern reference in the header file so that
-//DAC.CPP can see it... !!! FIX !!!
- extern uint16 serialMode; // From DAC.CPP
-
- if (serialMode & 0x01) // INTERNAL flag (JERRY is master)
- {
- DSPSetIRQLine(DSPIRQ_SSI, ASSERT_LINE); // This does the 'IRQ enabled' checking...
- double usecs = (float)jerryI2SCycles * RISC_CYCLE_IN_USEC;
- SetCallbackTime(JERRYI2SCallback, usecs);
+ jerryI2SCycles = 32 * (2 * (sclk + 1));
+//This makes audio faster, but not enough and the pitch is wrong besides
+// jerryI2SCycles = 32 * (2 * (sclk - 1));
+
+ // If INTERNAL flag is set, then JERRY's SCLK is master
+ if (smode & SMODE_INTERNAL)
+ {
+ // This does the 'IRQ enabled' checking...
+ DSPSetIRQLine(DSPIRQ_SSI, ASSERT_LINE);
+// double usecs = (float)jerryI2SCycles * RISC_CYCLE_IN_USEC;
+//this fix is almost enough to fix timings in tripper, but not quite enough...
+ double usecs = (float)jerryI2SCycles * (vjs.hardwareTypeNTSC ? RISC_CYCLE_IN_USEC : RISC_CYCLE_PAL_IN_USEC);
+ SetCallbackTime(JERRYI2SCallback, usecs, EVENT_JERRY);
}
- else // JERRY is slave to external word clock
+ else
{
+ // JERRY is slave to external word clock
+
//Note that 44100 Hz requires samples every 22.675737 usec.
//When JERRY is slave to the word clock, we need to do interrupts either at 44.1K
//sample rate or at a 88.2K sample rate (11.332... usec).
DSPSetIRQLine(DSPIRQ_SSI, ASSERT_LINE);
}
- SetCallbackTime(JERRYI2SCallback, 22.675737);
+ SetCallbackTime(JERRYI2SCallback, 22.675737, EVENT_JERRY);
}
}
void JERRYInit(void)
{
JoystickInit();
- DACInit();
memcpy(&jerry_ram_8[0xD000], waveTableROM, 0x1000);
JERRYPIT1Prescaler = 0xFFFF;
JERRYPIT2Divider = 0xFFFF;
jerryInterruptMask = 0x0000;
jerryPendingInterrupt = 0x0000;
+
+ DACInit();
}
+
void JERRYReset(void)
{
JoystickReset();
EepromReset();
JERRYResetI2S();
- DACReset();
memset(jerry_ram_8, 0x00, 0xD000); // Don't clear out the Wavetable ROM...!
JERRYPIT1Prescaler = 0xFFFF;
jerry_timer_2_counter = 0;
jerryInterruptMask = 0x0000;
jerryPendingInterrupt = 0x0000;
+
+ DACReset();
}
+
void JERRYDone(void)
{
WriteLog("JERRY: M68K Interrupt control ($F10020) = %04X\n", GET16(jerry_ram_8, 0x20));
EepromDone();
}
+
bool JERRYIRQEnabled(int irq)
{
// Read the word @ $F10020
return jerryInterruptMask & irq;
}
+
void JERRYSetPendingIRQ(int irq)
{
// This is the shadow of INT (it's a split RO/WO register)
jerryPendingInterrupt |= irq;
}
+
//
// JERRY byte access (read)
//
-uint8 JERRYReadByte(uint32 offset, uint32 who/*=UNKNOWN*/)
+uint8_t JERRYReadByte(uint32_t offset, uint32_t who/*=UNKNOWN*/)
{
#ifdef JERRY_DEBUG
WriteLog("JERRY: Reading byte at %06X\n", offset);
//under the new system... !!! FIX !!!
else if ((offset >= 0xF10036) && (offset <= 0xF1003D))
{
-#ifndef NEW_TIMER_SYSTEM
-// jerry_timer_1_counter = (JERRYPIT1Prescaler + 1) * (JERRYPIT1Divider + 1);
- uint32 counter1Hi = (jerry_timer_1_counter / (JERRYPIT1Divider + 1)) - 1;
- uint32 counter1Lo = (jerry_timer_1_counter % (JERRYPIT1Divider + 1)) - 1;
- uint32 counter2Hi = (jerry_timer_2_counter / (JERRYPIT2Divider + 1)) - 1;
- uint32 counter2Lo = (jerry_timer_2_counter % (JERRYPIT2Divider + 1)) - 1;
-
- switch(offset & 0x0F)
- {
- case 6:
-// return JERRYPIT1Prescaler >> 8;
- return counter1Hi >> 8;
- case 7:
-// return JERRYPIT1Prescaler & 0xFF;
- return counter1Hi & 0xFF;
- case 8:
-// return JERRYPIT1Divider >> 8;
- return counter1Lo >> 8;
- case 9:
-// return JERRYPIT1Divider & 0xFF;
- return counter1Lo & 0xFF;
- case 10:
-// return JERRYPIT2Prescaler >> 8;
- return counter2Hi >> 8;
- case 11:
-// return JERRYPIT2Prescaler & 0xFF;
- return counter2Hi & 0xFF;
- case 12:
-// return JERRYPIT2Divider >> 8;
- return counter2Lo >> 8;
- case 13:
-// return JERRYPIT2Divider & 0xFF;
- return counter2Lo & 0xFF;
- }
-#else
WriteLog("JERRY: Unhandled timer read (BYTE) at %08X...\n", offset);
-#endif
}
// else if (offset >= 0xF10010 && offset <= 0xF10015)
// return clock_byte_read(offset);
return jerry_ram_8[offset & 0xFFFF];
}
+
//
// JERRY word access (read)
//
-uint16 JERRYReadWord(uint32 offset, uint32 who/*=UNKNOWN*/)
+uint16_t JERRYReadWord(uint32_t offset, uint32_t who/*=UNKNOWN*/)
{
#ifdef JERRY_DEBUG
WriteLog("JERRY: Reading word at %06X\n", offset);
//in the jerry_timer_n_counter variables... !!! FIX !!! [DONE]
else if ((offset >= 0xF10036) && (offset <= 0xF1003D))
{
-#ifndef NEW_TIMER_SYSTEM
-// jerry_timer_1_counter = (JERRYPIT1Prescaler + 1) * (JERRYPIT1Divider + 1);
- uint32 counter1Hi = (jerry_timer_1_counter / (JERRYPIT1Divider + 1)) - 1;
- uint32 counter1Lo = (jerry_timer_1_counter % (JERRYPIT1Divider + 1)) - 1;
- uint32 counter2Hi = (jerry_timer_2_counter / (JERRYPIT2Divider + 1)) - 1;
- uint32 counter2Lo = (jerry_timer_2_counter % (JERRYPIT2Divider + 1)) - 1;
-
- switch(offset & 0x0F)
- {
- case 6:
-// return JERRYPIT1Prescaler;
- return counter1Hi;
- case 8:
-// return JERRYPIT1Divider;
- return counter1Lo;
- case 10:
-// return JERRYPIT2Prescaler;
- return counter2Hi;
- case 12:
-// return JERRYPIT2Divider;
- return counter2Lo;
- }
- // Unaligned word reads???
-#else
WriteLog("JERRY: Unhandled timer read (WORD) at %08X...\n", offset);
-#endif
}
// else if ((offset >= 0xF10010) && (offset <= 0xF10015))
// return clock_word_read(offset);
return EepromReadWord(offset);
/*if (offset >= 0xF1D000)
- WriteLog("JERRY: Reading word at %08X [%04X]...\n", offset, ((uint16)jerry_ram_8[(offset+0)&0xFFFF] << 8) | jerry_ram_8[(offset+1)&0xFFFF]);//*/
+ WriteLog("JERRY: Reading word at %08X [%04X]...\n", offset, ((uint16_t)jerry_ram_8[(offset+0)&0xFFFF] << 8) | jerry_ram_8[(offset+1)&0xFFFF]);//*/
offset &= 0xFFFF; // Prevent crashing...!
- return ((uint16)jerry_ram_8[offset+0] << 8) | jerry_ram_8[offset+1];
+ return ((uint16_t)jerry_ram_8[offset+0] << 8) | jerry_ram_8[offset+1];
}
+
//
// JERRY byte access (write)
//
-void JERRYWriteByte(uint32 offset, uint8 data, uint32 who/*=UNKNOWN*/)
+void JERRYWriteByte(uint32_t offset, uint8_t data, uint32_t who/*=UNKNOWN*/)
{
#ifdef JERRY_DEBUG
WriteLog("jerry: writing byte %.2x at 0x%.6x\n",data,offset);
}
// SCLK ($F1A150--8 bits wide)
//NOTE: This should be taken care of in DAC...
+#if 0
else if ((offset >= 0xF1A152) && (offset <= 0xF1A153))
{
+#if 0
// WriteLog("JERRY: Writing %02X to SCLK...\n", data);
if ((offset & 0x03) == 2)
- JERRYI2SInterruptDivide = (JERRYI2SInterruptDivide & 0x00FF) | ((uint32)data << 8);
+ sclk = (sclk & 0x00FF) | ((uint32_t)data << 8);
else
- JERRYI2SInterruptDivide = (JERRYI2SInterruptDivide & 0xFF00) | (uint32)data;
-
- JERRYI2SInterruptTimer = -1;
-#ifndef NEW_TIMER_SYSTEM
- jerry_i2s_exec(0);
+ sclk = (sclk & 0xFF00) | (uint32_t)data;
#else
+ sclk = data;
+#endif
+#warning "!!! SCLK should be handled in dac.cpp !!!"
+ JERRYI2SInterruptTimer = -1;
RemoveCallback(JERRYI2SCallback);
JERRYI2SCallback();
-#endif
// return;
}
+#endif
// LTXD/RTXD/SCLK/SMODE $F1A148/4C/50/54 (really 16-bit registers...)
else if (offset >= 0xF1A148 && offset <= 0xF1A157)
{
}
else if (offset >= 0xF10000 && offset <= 0xF10007)
{
-#ifndef NEW_TIMER_SYSTEM
- switch (offset & 0x07)
- {
- case 0:
- JERRYPIT1Prescaler = (JERRYPIT1Prescaler & 0x00FF) | (data << 8);
- JERRYResetPIT1();
- break;
- case 1:
- JERRYPIT1Prescaler = (JERRYPIT1Prescaler & 0xFF00) | data;
- JERRYResetPIT1();
- break;
- case 2:
- JERRYPIT1Divider = (JERRYPIT1Divider & 0x00FF) | (data << 8);
- JERRYResetPIT1();
- break;
- case 3:
- JERRYPIT1Divider = (JERRYPIT1Divider & 0xFF00) | data;
- JERRYResetPIT1();
- break;
- case 4:
- JERRYPIT2Prescaler = (JERRYPIT2Prescaler & 0x00FF) | (data << 8);
- JERRYResetPIT2();
- break;
- case 5:
- JERRYPIT2Prescaler = (JERRYPIT2Prescaler & 0xFF00) | data;
- JERRYResetPIT2();
- break;
- case 6:
- JERRYPIT2Divider = (JERRYPIT2Divider & 0x00FF) | (data << 8);
- JERRYResetPIT2();
- break;
- case 7:
- JERRYPIT2Divider = (JERRYPIT2Divider & 0xFF00) | data;
- JERRYResetPIT2();
- }
-#else
WriteLog("JERRY: Unhandled timer write (BYTE) at %08X...\n", offset);
-#endif
return;
}
/* else if ((offset >= 0xF10010) && (offset <= 0xF10015))
jerry_ram_8[offset & 0xFFFF] = data;
}
+
//
// JERRY word access (write)
//
-void JERRYWriteWord(uint32 offset, uint16 data, uint32 who/*=UNKNOWN*/)
+void JERRYWriteWord(uint32_t offset, uint16_t data, uint32_t who/*=UNKNOWN*/)
{
#ifdef JERRY_DEBUG
WriteLog( "JERRY: Writing word %04X at %06X\n", data, offset);
WriteLog("JERRY: CLK2 word written by %s: %u\n", whoName[who], data);
else if (offset == 0xF10014)
WriteLog("JERRY: CLK3 word written by %s: %u\n", whoName[who], data);
-//else if (offset == 0xF10020)
-// WriteLog("JERRY: JINTCTRL word written by %s: $%04X\n", whoName[who], data);
+//else if (offset == 0xF1A100)
+// WriteLog("JERRY: D_FLAGS word written by %s: %u\n", whoName[who], data);
+//else if (offset == 0xF1A102)
+// WriteLog("JERRY: D_FLAGS+2 word written by %s: %u\n", whoName[who], data);
+else if (offset == 0xF10020)
+ WriteLog("JERRY: JINTCTRL word written by %s: $%04X (%s%s%s%s%s%s)\n", whoName[who], data,
+ (data & 0x01 ? "Extrnl " : ""), (data & 0x02 ? "DSP " : ""),
+ (data & 0x04 ? "Timer0 " : ""), (data & 0x08 ? "Timer1 " : ""),
+ (data & 0x10 ? "ASI " : ""), (data & 0x20 ? "I2S " : ""));
#endif
if ((offset >= DSP_CONTROL_RAM_BASE) && (offset < DSP_CONTROL_RAM_BASE+0x20))
return;
}
//NOTE: This should be taken care of in DAC...
+#if 0
else if (offset == 0xF1A152) // Bottom half of SCLK ($F1A150)
{
- WriteLog("JERRY: Writing %04X to SCLK (by %s)...\n", data, whoName[who]);
+#warning "!!! SCLK should be handled in dac.cpp !!!"
+ WriteLog("JERRY: Writing $%X to SCLK (by %s)...\n", data, whoName[who]);
//This should *only* be enabled when SMODE has its INTERNAL bit set! !!! FIX !!!
- JERRYI2SInterruptDivide = (uint8)data;
- JERRYI2SInterruptTimer = -1;
-#ifndef NEW_TIMER_SYSTEM
- jerry_i2s_exec(0);
+#if 0
+ sclk = (uint8_t)data;
#else
+ sclk = data & 0xFF;
+#endif
+ JERRYI2SInterruptTimer = -1;
RemoveCallback(JERRYI2SCallback);
JERRYI2SCallback();
-#endif
DACWriteWord(offset, data, who);
return;
}
+#endif
// LTXD/RTXD/SCLK/SMODE $F1A148/4C/50/54 (really 16-bit registers...)
else if (offset >= 0xF1A148 && offset <= 0xF1A156)
{
}
else if (offset >= 0xF10000 && offset <= 0xF10007)
{
-//#ifndef NEW_TIMER_SYSTEM
-#if 1
switch(offset & 0x07)
{
case 0:
JERRYResetPIT2();
}
// Need to handle (unaligned) cases???
-#else
-WriteLog("JERRY: Unhandled timer write %04X (WORD) at %08X by %s...\n", data, offset, whoName[who]);
-#endif
+
return;
}
/* else if (offset >= 0xF10010 && offset < 0xF10016)
jerry_ram_8[(offset+0) & 0xFFFF] = (data >> 8) & 0xFF;
jerry_ram_8[(offset+1) & 0xFFFF] = data & 0xFF;
}
+
+
+int JERRYGetPIT1Frequency(void)
+{
+ int systemClockFrequency = (vjs.hardwareTypeNTSC ? RISC_CLOCK_RATE_NTSC : RISC_CLOCK_RATE_PAL);
+ return systemClockFrequency / ((JERRYPIT1Prescaler + 1) * (JERRYPIT1Divider + 1));
+}
+
+
+int JERRYGetPIT2Frequency(void)
+{
+ int systemClockFrequency = (vjs.hardwareTypeNTSC ? RISC_CLOCK_RATE_NTSC : RISC_CLOCK_RATE_PAL);
+ return systemClockFrequency / ((JERRYPIT2Prescaler + 1) * (JERRYPIT2Divider + 1));
+}
+
projects / virtualjaguar / blobdiff