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author davidhay <davidhay@localhost>2009-03-21 19:33:39 +0000
committer davidhay <davidhay@localhost>2009-03-21 19:33:39 +0000
commit663bc8a8cd02b92da172ac53f03ed71f3ba082de (patch)
tree6e595524ffef0207e192c3cb688ac4a1d8450f39 /src/emu/cpu/sh4/sh4comn.c
parent6a0e1ddf098621ec8f5e6d41072f4152d780a3e5 (diff)
fatalerror if the SH4 mmu is turned on.
looks like quite a few NaomiGDs need it.. Ikaruga, Border Down, Senko etc. etc.
Diffstat (limited to 'src/emu/cpu/sh4/sh4comn.c')
-rw-r--r--src/emu/cpu/sh4/sh4comn.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/src/emu/cpu/sh4/sh4comn.c b/src/emu/cpu/sh4/sh4comn.c
index a1447684a12..75e0b0fae8f 100644
--- a/src/emu/cpu/sh4/sh4comn.c
+++ b/src/emu/cpu/sh4/sh4comn.c
@@ -641,6 +641,12 @@ WRITE32_HANDLER( sh4_internal_w )
switch( offset )
{
+ case MMUCR: // MMU Control
+ if (data & 1)
+ fatalerror("SH4: MMUCR write enables MMU\n");
+
+ break;
+
// Memory refresh
case RTCSR:
sh4->m[RTCSR] &= 255;