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-rw-r--r--src/emu/cpu/m37710/m37710.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/emu/cpu/m37710/m37710.c b/src/emu/cpu/m37710/m37710.c
index 2cea0d1d126..d8a18431d61 100644
--- a/src/emu/cpu/m37710/m37710.c
+++ b/src/emu/cpu/m37710/m37710.c
@@ -461,6 +461,9 @@ static UINT8 m37710_internal_r(m37710i_cpu_struct *cpustate, int offset)
case 0x35:
return 0xff; // UART control
+
+ case 0x70: // A/D IRQ control
+ return cpustate->m37710_regs[offset] | 8;
}
return cpustate->m37710_regs[offset];