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m68k: set read/write bit properly in special status on MMU bus errors [R. Belmont]

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This commit is contained in:
R. Belmont 2011-07-15 03:34:55 +00:00
parent bd9843bfe8
commit d914de3b4b
1 changed files with 7 additions and 3 deletions
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10
src/emu/cpu/m68000/m68kcpu.h
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@ -80,7 +80,7 @@ typedef struct _m68ki_cpu_core m68ki_cpu_core;
#define CPU_TYPE_010 (0x00000004)
#define CPU_TYPE_EC020 (0x00000008)
#define CPU_TYPE_020 (0x00000010)
#define CPU_TYPE_EC030 (0x00000020)
#define CPU_TYPE_EC030 (0x00000020)
#define CPU_TYPE_030 (0x00000040)
#define CPU_TYPE_EC040 (0x00000080)
#define CPU_TYPE_LC040 (0x00000100)
@ -1566,6 +1566,8 @@ void m68ki_stack_frame_1000(m68ki_cpu_core *m68k, UINT32 pc, UINT32 sr, UINT32 v
*/
void m68ki_stack_frame_1010(m68ki_cpu_core *m68k, UINT32 sr, UINT32 vector, UINT32 pc, UINT32 fault_address)
{
int orig_rw = m68k->mmu_tmp_rw; // this gets splatted by the following pushes, so save it now
/* INTERNAL REGISTER */
m68ki_push_16(m68k, 0);
@ -1593,7 +1595,7 @@ void m68ki_stack_frame_1010(m68ki_cpu_core *m68k, UINT32 sr, UINT32 vector, UINT
/* SPECIAL STATUS REGISTER */
// set bit for: Rerun Faulted bus Cycle, or run pending prefetch
// set FC
m68ki_push_16(m68k, 0x0100 | m68k->mmu_tmp_fc );
m68ki_push_16(m68k, 0x0100 | m68k->mmu_tmp_fc | orig_rw<<6);
/* INTERNAL REGISTER */
m68ki_push_16(m68k, 0);
@ -1615,6 +1617,8 @@ void m68ki_stack_frame_1010(m68ki_cpu_core *m68k, UINT32 sr, UINT32 vector, UINT
*/
void m68ki_stack_frame_1011(m68ki_cpu_core *m68k, UINT32 sr, UINT32 vector, UINT32 pc, UINT32 fault_address)
{
int orig_rw = m68k->mmu_tmp_rw; // this gets splatted by the following pushes, so save it now
/* INTERNAL REGISTERS (18 words) */
m68ki_push_32(m68k, 0);
m68ki_push_32(m68k, 0);
@ -1665,7 +1669,7 @@ void m68ki_stack_frame_1011(m68ki_cpu_core *m68k, UINT32 sr, UINT32 vector, UINT
m68ki_push_16(m68k, 0);
/* SPECIAL STATUS REGISTER */
m68ki_push_16(m68k, 0x0100 | m68k->mmu_tmp_fc);
m68ki_push_16(m68k, 0x0100 | m68k->mmu_tmp_fc | orig_rw<<6);
/* INTERNAL REGISTER */
m68ki_push_16(m68k, 0);