diff --git a/PDP11/pdp11_vh.c b/PDP11/pdp11_vh.c
index 5a2be23b..4d6e1375 100644
--- a/PDP11/pdp11_vh.c
+++ b/PDP11/pdp11_vh.c
@@ -507,19 +507,19 @@ static UNIT *vh_timer_unit;
 static UNIT *vh_poll_unit = &vh_unit[0];
 
 static const REG vh_reg[] = {
-    { BRDATAD (CSR,         vh_csr, DEV_RDX, 16, VH_MUXES, "control/status register, boards 0 to 3") },
-    { BRDATAD (TIMER,     vh_timer, DEV_RDX, 16, VH_MUXES, "controller timeout, boards 0 to 3") },
-    { BRDATAD (MCOUNT,   vh_mcount, DEV_RDX, 16, VH_MUXES, "count down timer, boards 0 to 3") },
-    { BRDATAD (TIMEO,     vh_timeo, DEV_RDX, 16, VH_MUXES, "control/status register, boards 0 to 3") },
-    { BRDATAD (OVRRUN,   vh_ovrrun, DEV_RDX, 16, VH_MUXES, "line overrun bits, boards 0 to 3") },
-    { BRDATAD (STALL,     vh_stall, DEV_RDX, 16, VH_MUXES, "XOFF'd channels 1 bit/channel, boards 0 to 3") },
-    { BRDATAD (LOOP,       vh_loop, DEV_RDX, 16, VH_MUXES, "loopback status, boards 0 to 3") },
-    { GRDATAD (RCVINT,      vh_rxi, DEV_RDX, 32, 0,        "rcv interrupts 1 bit/channel") },
-    { GRDATAD (TXINT,       vh_txi, DEV_RDX, 32, 0,        "xmt interrupts 1 bit/channel") },
-    { GRDATAD (FIFOCRIT,   vh_crit, DEV_RDX, 32, 0,        "FIFO.CRIT 1 bit/channel") },
-    { DRDATAD (TIME,       vh_wait, 24,                    "input polling adjustment"), PV_LEFT },
-    { GRDATA  (DEVADDR,  vh_dib.ba, DEV_RDX, 32, 0), REG_HRO },
-    { GRDATA  (DEVVEC,  vh_dib.vec, DEV_RDX, 16, 0), REG_HRO },
+    { BRDATADF (CSR,         vh_csr, DEV_RDX, 16, VH_MUXES, "control/status register, boards 0 to 3", vh_csr_bits) },
+    { BRDATAD  (TIMER,     vh_timer, DEV_RDX, 16, VH_MUXES, "controller timeout, boards 0 to 3") },
+    { BRDATAD  (MCOUNT,   vh_mcount, DEV_RDX, 16, VH_MUXES, "count down timer, boards 0 to 3") },
+    { BRDATAD  (TIMEO,     vh_timeo, DEV_RDX, 16, VH_MUXES, "control/status register, boards 0 to 3") },
+    { BRDATAD  (OVRRUN,   vh_ovrrun, DEV_RDX, 16, VH_MUXES, "line overrun bits, boards 0 to 3") },
+    { BRDATAD  (STALL,     vh_stall, DEV_RDX, 16, VH_MUXES, "XOFF'd channels 1 bit/channel, boards 0 to 3") },
+    { BRDATAD  (LOOP,       vh_loop, DEV_RDX, 16, VH_MUXES, "loopback status, boards 0 to 3") },
+    { GRDATAD  (RCVINT,      vh_rxi, DEV_RDX, 32, 0,        "rcv interrupts 1 bit/channel") },
+    { GRDATAD  (TXINT,       vh_txi, DEV_RDX, 32, 0,        "xmt interrupts 1 bit/channel") },
+    { GRDATAD  (FIFOCRIT,   vh_crit, DEV_RDX, 32, 0,        "FIFO.CRIT 1 bit/channel") },
+    { DRDATAD  (TIME,       vh_wait, 24,                    "input polling adjustment"), PV_LEFT },
+    { GRDATA   (DEVADDR,  vh_dib.ba, DEV_RDX, 32, 0), REG_HRO },
+    { GRDATA   (DEVVEC,  vh_dib.vec, DEV_RDX, 16, 0), REG_HRO },
     { NULL }
 };