diff options
Diffstat (limited to 'src/emu/cpu/m68000/m68k_in.c')
-rw-r--r-- | src/emu/cpu/m68000/m68k_in.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/src/emu/cpu/m68000/m68k_in.c b/src/emu/cpu/m68000/m68k_in.c index bad6dceafe6..af18f1a95f2 100644 --- a/src/emu/cpu/m68000/m68k_in.c +++ b/src/emu/cpu/m68000/m68k_in.c @@ -2660,7 +2660,8 @@ M68KMAKE_OP(bfexts, 32, ., .) } width = ((width-1) & 31) + 1; - data = (offset+width) < 16 ? (m68ki_read_16((mc68kcpu), ea) << 16) : m68ki_read_32((mc68kcpu), ea); + data = (offset+width) < 8 ? (m68ki_read_8((mc68kcpu), ea) << 24) : + (offset+width) < 16 ? (m68ki_read_16((mc68kcpu), ea) << 16) : m68ki_read_32((mc68kcpu), ea); data = MASK_OUT_ABOVE_32(data<<offset); @@ -2745,7 +2746,8 @@ M68KMAKE_OP(bfextu, 32, ., .) } width = ((width-1) & 31) + 1; - data = (offset+width) < 16 ? (m68ki_read_16((mc68kcpu), ea) << 16) : m68ki_read_32((mc68kcpu), ea); + data = (offset+width) < 8 ? (m68ki_read_8((mc68kcpu), ea) << 24) : + (offset+width) < 16 ? (m68ki_read_16((mc68kcpu), ea) << 16) : m68ki_read_32((mc68kcpu), ea); data = MASK_OUT_ABOVE_32(data<<offset); if((offset+width) > 32) @@ -2942,11 +2944,16 @@ M68KMAKE_OP(bfins, 32, ., .) (mc68kcpu)->not_z_flag = insert_base; insert_long = insert_base >> offset; - data_long = (offset+width) < 16 ? (m68ki_read_16((mc68kcpu), ea) << 16) : m68ki_read_32((mc68kcpu), ea); + data_long = (offset+width) < 8 ? (m68ki_read_8((mc68kcpu), ea) << 24) : + (offset+width) < 16 ? (m68ki_read_16((mc68kcpu), ea) << 16) : m68ki_read_32((mc68kcpu), ea); (mc68kcpu)->v_flag = VFLAG_CLEAR; (mc68kcpu)->c_flag = CFLAG_CLEAR; - if((width + offset) < 16) + if((width + offset) < 8) + { + m68ki_write_8((mc68kcpu), ea, ((data_long & ~mask_long) | insert_long) >> 24); + } + else if((width + offset) < 16) { m68ki_write_16((mc68kcpu), ea, ((data_long & ~mask_long) | insert_long) >> 16); } |