diff --git a/qemu/saimaa.c b/qemu/saimaa.c
index c024b09..51bb914 100644
--- a/qemu/saimaa.c
+++ b/qemu/saimaa.c
@@ -108,9 +108,17 @@ static uint64_t saimaa_vec_read(void *opaque, hwaddr off, unsigned size)
         ARMCPU *cpu = ARM_CPU(current_cpu);
         uint64_t pc = cpu ? cpu->env.regs[15] : 0;
         int th = cpu ? cpu->env.thumb : 0;
+        uint32_t mb0 = 0, mb1 = 0;
+        if (saimaa_vec_n < 3) {
+            cpu_physical_memory_read(0x08062200, &mb0, 4);
+            cpu_physical_memory_read(0x08062204, &mb1, 4);
+        }
         fprintf(stderr, "saimaa-vec: %s off=0x%x pc=0x%lx",
                 size == 2 ? "fetch?" : "read",
                 (unsigned)off, (unsigned long)pc - (th ? 4 : 8));
+        if (saimaa_vec_n < 3) {
+            fprintf(stderr, " maze-mailbox: lr=0x%x sp=0x%x", mb0, mb1);
+        }
         if (cpu) {
             int b, r;
             fprintf(stderr, " regs=");