Bugfixes that are too complex to explain in this small a space. ;-)

[virtualjaguar] / src / jerry.cpp

diff --git a/src/jerry.cpp b/src/jerry.cpp
index d569dad7b5a95faafe2f475386c8fb37d0a42dcf..bc1541f835c7bdf6a9b669e040b2a1df6d80bcd9 100644 (file)
--- a/src/jerry.cpp
+++ b/src/jerry.cpp
@@ -185,6 +185,9 @@ 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 jerry_i2s_exec(uint32 cycles)
 {
 #ifndef NEW_TIMER_SYSTEM
@@ -245,6 +248,7 @@ void jerry_i2s_exec(uint32 cycles)
 #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]
@@ -294,8 +298,12 @@ void JERRYResetPIT1(void)
 
 #else
        RemoveCallback(JERRYPIT1Callback);
-       double usecs = (float)(JERRYPIT1Prescaler + 1) * (float)(JERRYPIT1Divider + 1) * RISC_CYCLE_IN_USEC;
-       SetCallbackTime(JERRYPIT1Callback, usecs);
+
+       if (JERRYPIT1Prescaler | JERRYPIT1Divider)
+       {
+               double usecs = (float)(JERRYPIT1Prescaler + 1) * (float)(JERRYPIT1Divider + 1) * RISC_CYCLE_IN_USEC;
+               SetCallbackTime(JERRYPIT1Callback, usecs);
+       }
 #endif
 }
 
@@ -315,8 +323,12 @@ void JERRYResetPIT2(void)
 
 #else
        RemoveCallback(JERRYPIT2Callback);
-       double usecs = (float)(JERRYPIT2Prescaler + 1) * (float)(JERRYPIT2Divider + 1) * RISC_CYCLE_IN_USEC;
-       SetCallbackTime(JERRYPIT2Callback, usecs);
+
+       if (JERRYPIT1Prescaler | JERRYPIT1Divider)
+       {
+               double usecs = (float)(JERRYPIT2Prescaler + 1) * (float)(JERRYPIT2Divider + 1) * RISC_CYCLE_IN_USEC;
+               SetCallbackTime(JERRYPIT2Callback, usecs);
+       }
 #endif
 }
 
@@ -377,6 +389,15 @@ void JERRYI2SCallback(void)
                        }
                        jerry_i2s_interrupt_timer += 602;
                }*/
+
+               if (ButchIsReadyToSend())//Not sure this is right spot to check...
+               {
+//     return GetWordFromButchSSI(offset, who);
+                       SetSSIWordsXmittedFromButch();
+                       DSPSetIRQLine(DSPIRQ_SSI, ASSERT_LINE);
+               }
+
+               SetCallbackTime(JERRYI2SCallback, 22.675737);
        }
 }
 
@@ -502,6 +523,7 @@ uint8 JERRYReadByte(uint32 offset, uint32 who/*=UNKNOWN*/)
                        return counter2Lo & 0xFF;
                }
 #else
+WriteLog("JERRY: Unhandled timer read (BYTE) at %08X...\n", offset);
 #endif
        }
 //     else if (offset >= 0xF10010 && offset <= 0xF10015)
@@ -542,6 +564,7 @@ uint16 JERRYReadWord(uint32 offset, uint32 who/*=UNKNOWN*/)
 //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;
@@ -564,6 +587,9 @@ uint16 JERRYReadWord(uint32 offset, uint32 who/*=UNKNOWN*/)
                        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);
@@ -614,7 +640,12 @@ void JERRYWriteByte(uint32 offset, uint8 data, uint32 who/*=UNKNOWN*/)
                        jerry_i2s_interrupt_divide = (jerry_i2s_interrupt_divide & 0xFF00) | (uint32)data;
 
                jerry_i2s_interrupt_timer = -1;
+#ifndef NEW_TIMER_SYSTEM
                jerry_i2s_exec(0);
+#else
+               RemoveCallback(JERRYI2SCallback);
+               JERRYI2SCallback();
+#endif
 //             return;
        }
        // LTXD/RTXD/SCLK/SMODE $F1A148/4C/50/54 (really 16-bit registers...)
@@ -625,6 +656,7 @@ void JERRYWriteByte(uint32 offset, uint8 data, uint32 who/*=UNKNOWN*/)
        }
        else if (offset >= 0xF10000 && offset <= 0xF10007)
        {
+#ifndef NEW_TIMER_SYSTEM
                switch (offset & 0x07)
                {
                case 0:
@@ -659,6 +691,9 @@ void JERRYWriteByte(uint32 offset, uint8 data, uint32 who/*=UNKNOWN*/)
                        JERRYPIT2Divider = (JERRYPIT2Divider & 0xFF00) | data;
                        JERRYResetPIT2();
                }
+#else
+WriteLog("JERRY: Unhandled timer write (BYTE) at %08X...\n", offset);
+#endif
                return;
        }
 /*     else if ((offset >= 0xF10010) && (offset <= 0xF10015))
@@ -721,7 +756,12 @@ void JERRYWriteWord(uint32 offset, uint16 data, uint32 who/*=UNKNOWN*/)
 //This should *only* be enabled when SMODE has its INTERNAL bit set! !!! FIX !!!
                jerry_i2s_interrupt_divide = (uint8)data;
                jerry_i2s_interrupt_timer = -1;
+#ifndef NEW_TIMER_SYSTEM
                jerry_i2s_exec(0);
+#else
+               RemoveCallback(JERRYI2SCallback);
+               JERRYI2SCallback();
+#endif
 
                DACWriteWord(offset, data, who);
                return; 
@@ -734,6 +774,8 @@ void JERRYWriteWord(uint32 offset, uint16 data, uint32 who/*=UNKNOWN*/)
        }
        else if (offset >= 0xF10000 && offset <= 0xF10007)
        {
+//#ifndef NEW_TIMER_SYSTEM
+#if 1
                switch(offset & 0x07)
                {
                case 0:
@@ -753,6 +795,9 @@ void JERRYWriteWord(uint32 offset, uint16 data, uint32 who/*=UNKNOWN*/)
                        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)