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ekeeke31 2010-08-05 19:14:09 +00:00
parent 21e263dd25
commit c7e2dad7b4
2 changed files with 67 additions and 0 deletions
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1
HISTORY.txt
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@ -44,6 +44,7 @@ of samples per frame and keeping PSG & FM chips in sync.
* improved Z80 interrupt accuracy
* improved 68k accuracy (initial Reset timing + auto-vectored interrupts handling).
* improved 68k timing accuracy for DIVU/DVIS (thanks to Jorge Cwik) & MULU/MULS instructions.
* implemented 68k undocumented flags behavior for DIVU/DIVS instructions (Bloodshot / Battle Frenzy)
* improved Z80 & 68k cpu execution/synchronization accuracy by using Master Clock as common reference (now run exactly 3420 M-Cycles per line).
* modified Z80 & 68k cores to directly use external cycle count instead of intermediate counters.

66
source/m68k/m68kops.c
View File

@ -12652,8 +12652,11 @@ static void m68k_op_divs_16_d(void)
return;
}
FLAG_V = VFLAG_SET;
FLAG_N = NFLAG_SET; /* undocumented behavior (fixes Blood Shot on Genesis) */
FLAG_C = CFLAG_CLEAR;
return;
}
FLAG_C = CFLAG_CLEAR;
m68ki_exception_trap(EXCEPTION_ZERO_DIVIDE);
}
@ -12693,8 +12696,11 @@ static void m68k_op_divs_16_ai(void)
return;
}
FLAG_V = VFLAG_SET;
FLAG_N = NFLAG_SET; /* undocumented behavior (fixes Blood Shot on Genesis) */
FLAG_C = CFLAG_CLEAR;
return;
}
FLAG_C = CFLAG_CLEAR;
m68ki_exception_trap(EXCEPTION_ZERO_DIVIDE);
}
@ -12734,8 +12740,11 @@ static void m68k_op_divs_16_pi(void)
return;
}
FLAG_V = VFLAG_SET;
FLAG_N = NFLAG_SET; /* undocumented behavior (fixes Blood Shot on Genesis) */
FLAG_C = CFLAG_CLEAR;
return;
}
FLAG_C = CFLAG_CLEAR;
m68ki_exception_trap(EXCEPTION_ZERO_DIVIDE);
}
@ -12775,8 +12784,11 @@ static void m68k_op_divs_16_pd(void)
return;
}
FLAG_V = VFLAG_SET;
FLAG_N = NFLAG_SET; /* undocumented behavior (fixes Blood Shot on Genesis) */
FLAG_C = CFLAG_CLEAR;
return;
}
FLAG_C = CFLAG_CLEAR;
m68ki_exception_trap(EXCEPTION_ZERO_DIVIDE);
}
@ -12816,8 +12828,11 @@ static void m68k_op_divs_16_di(void)
return;
}
FLAG_V = VFLAG_SET;
FLAG_N = NFLAG_SET; /* undocumented behavior (fixes Blood Shot on Genesis) */
FLAG_C = CFLAG_CLEAR;
return;
}
FLAG_C = CFLAG_CLEAR;
m68ki_exception_trap(EXCEPTION_ZERO_DIVIDE);
}
@ -12857,8 +12872,11 @@ static void m68k_op_divs_16_ix(void)
return;
}
FLAG_V = VFLAG_SET;
FLAG_N = NFLAG_SET; /* undocumented behavior (fixes Blood Shot on Genesis) */
FLAG_C = CFLAG_CLEAR;
return;
}
FLAG_C = CFLAG_CLEAR;
m68ki_exception_trap(EXCEPTION_ZERO_DIVIDE);
}
@ -12898,8 +12916,11 @@ static void m68k_op_divs_16_aw(void)
return;
}
FLAG_V = VFLAG_SET;
FLAG_N = NFLAG_SET; /* undocumented behavior (fixes Blood Shot on Genesis) */
FLAG_C = CFLAG_CLEAR;
return;
}
FLAG_C = CFLAG_CLEAR;
m68ki_exception_trap(EXCEPTION_ZERO_DIVIDE);
}
@ -12939,8 +12960,11 @@ static void m68k_op_divs_16_al(void)
return;
}
FLAG_V = VFLAG_SET;
FLAG_N = NFLAG_SET; /* undocumented behavior (fixes Blood Shot on Genesis) */
FLAG_C = CFLAG_CLEAR;
return;
}
FLAG_C = CFLAG_CLEAR;
m68ki_exception_trap(EXCEPTION_ZERO_DIVIDE);
}
@ -12980,8 +13004,11 @@ static void m68k_op_divs_16_pcdi(void)
return;
}
FLAG_V = VFLAG_SET;
FLAG_N = NFLAG_SET; /* undocumented behavior (fixes Blood Shot on Genesis) */
FLAG_C = CFLAG_CLEAR;
return;
}
FLAG_C = CFLAG_CLEAR;
m68ki_exception_trap(EXCEPTION_ZERO_DIVIDE);
}
@ -13021,8 +13048,11 @@ static void m68k_op_divs_16_pcix(void)
return;
}
FLAG_V = VFLAG_SET;
FLAG_N = NFLAG_SET; /* undocumented behavior (fixes Blood Shot on Genesis) */
FLAG_C = CFLAG_CLEAR;
return;
}
FLAG_C = CFLAG_CLEAR;
m68ki_exception_trap(EXCEPTION_ZERO_DIVIDE);
}
@ -13062,8 +13092,11 @@ static void m68k_op_divs_16_i(void)
return;
}
FLAG_V = VFLAG_SET;
FLAG_N = NFLAG_SET; /* undocumented behavior (fixes Blood Shot on Genesis) */
FLAG_C = CFLAG_CLEAR;
return;
}
FLAG_C = CFLAG_CLEAR;
m68ki_exception_trap(EXCEPTION_ZERO_DIVIDE);
}
@ -13092,8 +13125,11 @@ static void m68k_op_divu_16_d(void)
}
USE_CYCLES(70);
FLAG_V = VFLAG_SET;
FLAG_N = NFLAG_SET; /* undocumented behavior (fixes Blood Shot on Genesis) */
FLAG_C = CFLAG_CLEAR;
return;
}
FLAG_C = CFLAG_CLEAR;
m68ki_exception_trap(EXCEPTION_ZERO_DIVIDE);
}
@ -13122,8 +13158,11 @@ static void m68k_op_divu_16_ai(void)
}
USE_CYCLES(70);
FLAG_V = VFLAG_SET;
FLAG_N = NFLAG_SET; /* undocumented behavior (fixes Blood Shot on Genesis) */
FLAG_C = CFLAG_CLEAR;
return;
}
FLAG_C = CFLAG_CLEAR;
m68ki_exception_trap(EXCEPTION_ZERO_DIVIDE);
}
@ -13152,8 +13191,11 @@ static void m68k_op_divu_16_pi(void)
}
USE_CYCLES(70);
FLAG_V = VFLAG_SET;
FLAG_N = NFLAG_SET; /* undocumented behavior (fixes Blood Shot on Genesis) */
FLAG_C = CFLAG_CLEAR;
return;
}
FLAG_C = CFLAG_CLEAR;
m68ki_exception_trap(EXCEPTION_ZERO_DIVIDE);
}
@ -13182,8 +13224,11 @@ static void m68k_op_divu_16_pd(void)
}
USE_CYCLES(70);
FLAG_V = VFLAG_SET;
FLAG_N = NFLAG_SET; /* undocumented behavior (fixes Blood Shot on Genesis) */
FLAG_C = CFLAG_CLEAR;
return;
}
FLAG_C = CFLAG_CLEAR;
m68ki_exception_trap(EXCEPTION_ZERO_DIVIDE);
}
@ -13212,8 +13257,11 @@ static void m68k_op_divu_16_di(void)
}
USE_CYCLES(70);
FLAG_V = VFLAG_SET;
FLAG_N = NFLAG_SET; /* undocumented behavior (fixes Blood Shot on Genesis) */
FLAG_C = CFLAG_CLEAR;
return;
}
FLAG_C = CFLAG_CLEAR;
m68ki_exception_trap(EXCEPTION_ZERO_DIVIDE);
}
@ -13242,8 +13290,11 @@ static void m68k_op_divu_16_ix(void)
}
USE_CYCLES(70);
FLAG_V = VFLAG_SET;
FLAG_N = NFLAG_SET; /* undocumented behavior (fixes Blood Shot on Genesis) */
FLAG_C = CFLAG_CLEAR;
return;
}
FLAG_C = CFLAG_CLEAR;
m68ki_exception_trap(EXCEPTION_ZERO_DIVIDE);
}
@ -13272,8 +13323,11 @@ static void m68k_op_divu_16_aw(void)
}
USE_CYCLES(70);
FLAG_V = VFLAG_SET;
FLAG_N = NFLAG_SET; /* undocumented behavior (fixes Blood Shot on Genesis) */
FLAG_C = CFLAG_CLEAR;
return;
}
FLAG_C = CFLAG_CLEAR;
m68ki_exception_trap(EXCEPTION_ZERO_DIVIDE);
}
@ -13302,8 +13356,11 @@ static void m68k_op_divu_16_al(void)
}
USE_CYCLES(70);
FLAG_V = VFLAG_SET;
FLAG_N = NFLAG_SET; /* undocumented behavior (fixes Blood Shot on Genesis) */
FLAG_C = CFLAG_CLEAR;
return;
}
FLAG_C = CFLAG_CLEAR;
m68ki_exception_trap(EXCEPTION_ZERO_DIVIDE);
}
@ -13332,8 +13389,11 @@ static void m68k_op_divu_16_pcdi(void)
}
USE_CYCLES(70);
FLAG_V = VFLAG_SET;
FLAG_N = NFLAG_SET; /* undocumented behavior (fixes Blood Shot on Genesis) */
FLAG_C = CFLAG_CLEAR;
return;
}
FLAG_C = CFLAG_CLEAR;
m68ki_exception_trap(EXCEPTION_ZERO_DIVIDE);
}
@ -13362,8 +13422,11 @@ static void m68k_op_divu_16_pcix(void)
}
USE_CYCLES(70);
FLAG_V = VFLAG_SET;
FLAG_N = NFLAG_SET; /* undocumented behavior (fixes Blood Shot on Genesis) */
FLAG_C = CFLAG_CLEAR;
return;
}
FLAG_C = CFLAG_CLEAR;
m68ki_exception_trap(EXCEPTION_ZERO_DIVIDE);
}
@ -13392,8 +13455,11 @@ static void m68k_op_divu_16_i(void)
}
USE_CYCLES(70);
FLAG_V = VFLAG_SET;
FLAG_N = NFLAG_SET; /* undocumented behavior (fixes Blood Shot on Genesis) */
FLAG_C = CFLAG_CLEAR;
return;
}
FLAG_C = CFLAG_CLEAR;
m68ki_exception_trap(EXCEPTION_ZERO_DIVIDE);
}