diff --git a/sys/dev/ed/if_ed.c b/sys/dev/ed/if_ed.c
index d94a68842063..9b95e4fb8af5 100644
--- a/sys/dev/ed/if_ed.c
+++ b/sys/dev/ed/if_ed.c
@@ -87,8 +87,6 @@ static __inline void ed_rint(struct ed_softc *);
 static __inline void ed_xmit(struct ed_softc *);
 static __inline void ed_ring_copy(struct ed_softc *, bus_size_t, char *,
     u_short);
-static u_short	ed_pio_write_mbufs(struct ed_softc *, struct mbuf *,
-    bus_size_t);
 
 static void	ed_setrcr(struct ed_softc *);
 
@@ -276,7 +274,11 @@ ed_attach(device_t dev)
 			sc->readmem = ed_pio_readmem;
 		}
 	}
-	
+	if (sc->sc_write_mbufs == NULL) {
+		device_printf(dev, "No write mbufs routine set\n");
+		return (ENXIO);
+	}
+
 	callout_init_mtx(&sc->tick_ch, ED_MUTEX(sc), 0);
 	/*
 	 * Set interface to stopped condition (reset)
@@ -711,77 +713,10 @@ outloop:
 	/* txb_new points to next open buffer slot */
 	buffer = sc->mem_start + (sc->txb_new * ED_TXBUF_SIZE * ED_PAGE_SIZE);
 
-	if (sc->mem_shared) {
-		/*
-		 * Special case setup for 16 bit boards...
-		 */
-		if (sc->isa16bit) {
-			switch (sc->vendor) {
-#ifdef ED_3C503
-				/*
-				 * For 16bit 3Com boards (which have 16k of
-				 * memory), we have the xmit buffers in a
-				 * different page of memory ('page 0') - so
-				 * change pages.
-				 */
-			case ED_VENDOR_3COM:
-				ed_asic_outb(sc, ED_3COM_GACFR,
-					     ED_3COM_GACFR_RSEL);
-				break;
-#endif
-				/*
-				 * Enable 16bit access to shared memory on
-				 * WD/SMC boards.
-				 *
-				 * XXX - same as ed_enable_16bit_access()
-				 */
-			case ED_VENDOR_WD_SMC:
-				ed_asic_outb(sc, ED_WD_LAAR,
-				    sc->wd_laar_proto | ED_WD_LAAR_M16EN);
-				if (sc->chip_type == ED_CHIP_TYPE_WD790)
-					ed_asic_outb(sc, ED_WD_MSR, ED_WD_MSR_MENB);
-				break;
-			}
-		}
-		for (len = 0; m != 0; m = m->m_next) {
-			if (sc->isa16bit)
-				bus_space_write_region_2(sc->mem_bst,
-				    sc->mem_bsh, buffer,
-				    mtod(m, uint16_t *), (m->m_len + 1)/ 2);
-			else
-				bus_space_write_region_1(sc->mem_bst,
-				    sc->mem_bsh, buffer,
-				    mtod(m, uint8_t *), m->m_len);
-			buffer += m->m_len;
-			len += m->m_len;
-		}
-
-		/*
-		 * Restore previous shared memory access
-		 */
-		if (sc->isa16bit) {
-			switch (sc->vendor) {
-#ifdef ED_3C503
-			case ED_VENDOR_3COM:
-				ed_asic_outb(sc, ED_3COM_GACFR,
-				    ED_3COM_GACFR_RSEL | ED_3COM_GACFR_MBS0);
-				break;
-#endif
-			case ED_VENDOR_WD_SMC:
-				/* XXX - same as ed_disable_16bit_access() */
-				if (sc->chip_type == ED_CHIP_TYPE_WD790)
-					ed_asic_outb(sc, ED_WD_MSR, 0x00);
-				ed_asic_outb(sc, ED_WD_LAAR,
-				    sc->wd_laar_proto & ~ED_WD_LAAR_M16EN);
-				break;
-			}
-		}
-	} else {
-		len = ed_pio_write_mbufs(sc, m, buffer);
-		if (len == 0) {
-			m_freem(m0);
-			goto outloop;
-		}
+	len = sc->sc_write_mbufs(sc, m, buffer);
+	if (len == 0) {
+		m_freem(m0);
+		goto outloop;
 	}
 
 	sc->txb_len[sc->txb_new] = max(len, (ETHER_MIN_LEN-ETHER_CRC_LEN));
@@ -1457,7 +1392,7 @@ ed_pio_writemem(struct ed_softc *sc, uint8_t *src, uint16_t dst, uint16_t len)
  * Write an mbuf chain to the destination NIC memory address using
  *	programmed I/O.
  */
-static u_short
+u_short
 ed_pio_write_mbufs(struct ed_softc *sc, struct mbuf *m, bus_size_t dst)
 {
 	struct ifnet *ifp = sc->ifp;
@@ -1467,12 +1402,6 @@ ed_pio_write_mbufs(struct ed_softc *sc, struct mbuf *m, bus_size_t dst)
 
 	ED_ASSERT_LOCKED(sc);
 
-#ifdef ED_HPP
-	/* HP PC Lan+ cards need special handling */
-	if (sc->vendor == ED_VENDOR_HP && sc->type == ED_TYPE_HP_PCLANPLUS)
-		return ed_hpp_write_mbufs(sc, m, dst);
-#endif
-
 	/* Regular Novell cards */
 	/* First, count up the total number of bytes to copy */
 	for (total_len = 0, mp = m; mp; mp = mp->m_next)
@@ -1708,3 +1637,74 @@ ed_clear_memory(device_t dev)
 	}
 	return (0);
 }
+	    
+u_short
+ed_shmem_write_mbufs(struct ed_softc *sc, struct mbuf *m, bus_size_t dst)
+{
+	u_short len;
+
+	/*
+	 * Special case setup for 16 bit boards...
+	 */
+	if (sc->isa16bit) {
+		switch (sc->vendor) {
+#ifdef ED_3C503
+			/*
+			 * For 16bit 3Com boards (which have 16k of
+			 * memory), we have the xmit buffers in a
+			 * different page of memory ('page 0') - so
+			 * change pages.
+			 */
+		case ED_VENDOR_3COM:
+			ed_asic_outb(sc, ED_3COM_GACFR, ED_3COM_GACFR_RSEL);
+			break;
+#endif
+			/*
+			 * Enable 16bit access to shared memory on
+			 * WD/SMC boards.
+			 *
+			 * XXX - same as ed_enable_16bit_access()
+			 */
+		case ED_VENDOR_WD_SMC:
+			ed_asic_outb(sc, ED_WD_LAAR,
+			    sc->wd_laar_proto | ED_WD_LAAR_M16EN);
+			if (sc->chip_type == ED_CHIP_TYPE_WD790)
+				ed_asic_outb(sc, ED_WD_MSR, ED_WD_MSR_MENB);
+			break;
+		}
+	}
+	for (len = 0; m != 0; m = m->m_next) {
+		if (sc->isa16bit)
+			bus_space_write_region_2(sc->mem_bst,
+			    sc->mem_bsh, dst,
+			    mtod(m, uint16_t *), (m->m_len + 1)/ 2);
+		else
+			bus_space_write_region_1(sc->mem_bst,
+			    sc->mem_bsh, dst,
+			    mtod(m, uint8_t *), m->m_len);
+		dst += m->m_len;
+		len += m->m_len;
+	}
+
+	/*
+	 * Restore previous shared memory access
+	 */
+	if (sc->isa16bit) {
+		switch (sc->vendor) {
+#ifdef ED_3C503
+		case ED_VENDOR_3COM:
+			ed_asic_outb(sc, ED_3COM_GACFR,
+			    ED_3COM_GACFR_RSEL | ED_3COM_GACFR_MBS0);
+			break;
+#endif
+		case ED_VENDOR_WD_SMC:
+			/* XXX - same as ed_disable_16bit_access() */
+			if (sc->chip_type == ED_CHIP_TYPE_WD790)
+				ed_asic_outb(sc, ED_WD_MSR, 0x00);
+			ed_asic_outb(sc, ED_WD_LAAR,
+			    sc->wd_laar_proto & ~ED_WD_LAAR_M16EN);
+			break;
+		}
+	}
+	return (len);
+}
diff --git a/sys/dev/ed/if_ed_3c503.c b/sys/dev/ed/if_ed_3c503.c
index 55b7046a84f2..152b863698a7 100644
--- a/sys/dev/ed/if_ed_3c503.c
+++ b/sys/dev/ed/if_ed_3c503.c
@@ -325,7 +325,7 @@ ed_probe_3Com(device_t dev, int port_rid, int flags)
 	 * mem.
 	 */
 	ed_asic_outb(sc, ED_3COM_GACFR, ED_3COM_GACFR_RSEL |
-	     ED_3COM_GACFR_MBS0);
+	    ED_3COM_GACFR_MBS0);
 
 	/*
 	 * Initialize "Vector Pointer" registers. These gawd-awful things are
@@ -338,8 +338,10 @@ ed_probe_3Com(device_t dev, int port_rid, int flags)
 	ed_asic_outb(sc, ED_3COM_VPTR0, 0x00);
 
 	error = ed_clear_memory(dev);
-	if (error == 0)
+	if (error == 0) {
 		sc->sc_mediachg = ed_3c503_mediachg;
+		sc->sc_write_mbufs = ed_shmem_write_mbufs;
+	}
 	return (error);
 }
 
diff --git a/sys/dev/ed/if_ed_cbus.c b/sys/dev/ed/if_ed_cbus.c
index d5bdfdcbe7e0..5de878a96ea9 100644
--- a/sys/dev/ed/if_ed_cbus.c
+++ b/sys/dev/ed/if_ed_cbus.c
@@ -54,13 +54,13 @@
 static int ed98_alloc_port(device_t, int);
 static int ed98_alloc_memory(device_t, int);
 static int ed_pio_testmem(struct ed_softc *, int, int, int);
-static int ed_probe_SIC98(device_t, int, int);
 static int ed_probe_CNET98(device_t, int, int);
 static int ed_probe_CNET98EL(device_t, int, int);
+static int ed_probe_EZ98(device_t, int, int);
 static int ed_probe_NEC77(device_t, int, int);
 static int ed_probe_NW98X(device_t, int, int);
 static int ed_probe_SB98(device_t, int, int);
-static int ed_probe_EZ98(device_t, int, int);
+static int ed_probe_SIC98(device_t, int, int);
 static int ed98_probe_Novell(device_t, int, int);
 static int ed98_probe_generic8390(struct ed_softc *);
 static void ed_reset_CNET98(struct ed_softc *, int);
@@ -788,6 +788,7 @@ ed98_probe_Novell(device_t dev, int port_rid, int flags)
 	/* clear any pending interrupts that might have occurred above */
 	ed_nic_outb(sc, ED_P0_ISR, 0xff);
 
+	sc->sc_write_mbufs = ed_pio_write_mbufs;
 	return (0);
 }
 
@@ -888,6 +889,7 @@ ed_probe_SIC98(device_t dev, int port_rid, int flags)
 
 	sc->mem_ring = sc->mem_start + sc->txb_cnt * ED_PAGE_SIZE * ED_TXBUF_SIZE;
 
+	sc->sc_write_mbufs = ed_shmem_write_mbufs;
 	return (0);
 }
 
@@ -1137,6 +1139,7 @@ ed_probe_CNET98(device_t dev, int port_rid, int flags)
 	ed_asic_outb(sc, ED_CNET98_INT_MASK, 0x7e);
 	DELAY(1000);
 
+	sc->sc_write_mbufs = ed_shmem_write_mbufs;
 	return (0);
 }
 
@@ -1231,6 +1234,7 @@ ed_probe_CNET98EL(device_t dev, int port_rid, int flags)
 	/* clear any pending interrupts that might have occurred above */
 	ed_nic_outb(sc, ED_P0_ISR, 0xff);
 
+	sc->sc_write_mbufs = ed_pio_write_mbufs;
 	return (0);
 }
 
@@ -1498,9 +1502,8 @@ ed_probe_SB98(device_t dev, int port_rid, int flags)
 
 	/* Test memory via PIO */
 	sc->cr_proto = ED_CR_RD2;
-	if (!ed_pio_testmem(sc, 16384, 1, flags)) {
+	if (!ed_pio_testmem(sc, 16384, 1, flags))
 		return (ENXIO);
-	}
 
 	/* This looks like an SB9801 board. */
 	sc->type_str = "SB9801";
@@ -1511,6 +1514,7 @@ ed_probe_SB98(device_t dev, int port_rid, int flags)
 	/* clear any pending interrupts that might have occurred above */
 	ed_nic_outb(sc, ED_P0_ISR, 0xff);
 
+	sc->sc_write_mbufs = ed_pio_write_mbufs;
 	return (0);
 }
 
diff --git a/sys/dev/ed/if_ed_hpp.c b/sys/dev/ed/if_ed_hpp.c
index c54170502cb3..12b59c372c1c 100644
--- a/sys/dev/ed/if_ed_hpp.c
+++ b/sys/dev/ed/if_ed_hpp.c
@@ -60,9 +60,13 @@ __FBSDID("$FreeBSD$");
 #include <dev/ed/if_edreg.h>
 #include <dev/ed/if_edvar.h>
 
+static void	ed_hpp_readmem(struct ed_softc *, bus_size_t, uint8_t *,
+		    uint16_t);
 static void	ed_hpp_writemem(struct ed_softc *, uint8_t *, uint16_t,
 		    uint16_t);
 static void	ed_hpp_set_physical_link(struct ed_softc *sc);
+static u_short	ed_hpp_write_mbufs(struct ed_softc *, struct mbuf *,
+		    bus_size_t);
 
 /*
  * Interrupt conversion table for the HP PC LAN+
@@ -357,6 +361,8 @@ ed_probe_HP_pclanp(device_t dev, int port_rid, int flags)
 	}
 
 	sc->sc_mediachg = ed_hpp_set_physical_link;
+	sc->sc_write_mbufs = ed_hpp_write_mbufs;
+	sc->readmem = ed_hpp_readmem;
 	return (0);
 }
 
@@ -411,7 +417,7 @@ ed_hpp_set_physical_link(struct ed_softc *sc)
  * IO.
  */
 
-void
+static void
 ed_hpp_readmem(struct ed_softc *sc, bus_size_t src, uint8_t *dst,
     uint16_t amount)
 {
@@ -547,8 +553,8 @@ ed_hpp_writemem(struct ed_softc *sc, uint8_t *src, uint16_t dst, uint16_t len)
  * allows it.
  */
 
-u_short
-ed_hpp_write_mbufs(struct ed_softc *sc, struct mbuf *m, int dst)
+static u_short
+ed_hpp_write_mbufs(struct ed_softc *sc, struct mbuf *m, bus_size_t dst)
 {
 	int len, wantbyte;
 	unsigned short total_len;
diff --git a/sys/dev/ed/if_ed_isa.c b/sys/dev/ed/if_ed_isa.c
index 620369e5c59b..c0cd7ff46af5 100644
--- a/sys/dev/ed/if_ed_isa.c
+++ b/sys/dev/ed/if_ed_isa.c
@@ -82,6 +82,7 @@ ed_isa_probe_Novell(device_t dev)
 	/*
 	 * Final sanity check for Gateway Ethernet cards before
 	 * believing that they really are Gateway AT.
+	 * XXX I think this is stale.
 	 */
 	if ((ED_FLAGS_GETTYPE(flags) == ED_FLAGS_GWETHER) &&
 	    (sc->enaddr[2] == 0x86)) {
@@ -175,10 +176,6 @@ ed_isa_attach(device_t dev)
 		return (error);
 	}
 
-#ifdef ED_HPP
-	if (sc->vendor == ED_VENDOR_HP && sc->type == ED_TYPE_HP_PCLANPLUS)
-		sc->readmem = ed_hpp_readmem;
-#endif
 	return ed_attach(dev);
 }
 
diff --git a/sys/dev/ed/if_ed_novell.c b/sys/dev/ed/if_ed_novell.c
index 032dc572d748..52d77302c7c0 100644
--- a/sys/dev/ed/if_ed_novell.c
+++ b/sys/dev/ed/if_ed_novell.c
@@ -192,6 +192,7 @@ ed_probe_Novell_generic(device_t dev, int flags)
 	/* clear any pending interrupts that might have occurred above */
 	ed_nic_outb(sc, ED_P0_ISR, 0xff);
 
+	sc->sc_write_mbufs = ed_pio_write_mbufs;
 	return (0);
 }
 
diff --git a/sys/dev/ed/if_ed_sic.c b/sys/dev/ed/if_ed_sic.c
index 627202b88e98..d9c67120fd75 100644
--- a/sys/dev/ed/if_ed_sic.c
+++ b/sys/dev/ed/if_ed_sic.c
@@ -150,6 +150,7 @@ ed_probe_SIC(device_t dev, int port_rid, int flags)
 
 	sc->mem_ring = sc->mem_start + sc->txb_cnt * ED_PAGE_SIZE * ED_TXBUF_SIZE;
 
+	sc->sc_write_mbufs = ed_shmem_write_mbufs;
 	return (0);
 }
 
diff --git a/sys/dev/ed/if_ed_wd80x3.c b/sys/dev/ed/if_ed_wd80x3.c
index 348fe8ebdfc9..b3cb439c0fec 100644
--- a/sys/dev/ed/if_ed_wd80x3.c
+++ b/sys/dev/ed/if_ed_wd80x3.c
@@ -428,6 +428,7 @@ ed_probe_WD80x3_generic(device_t dev, int flags, uint16_t *intr_vals[])
 	 */
 	error = ed_clear_memory(dev);
 	ed_disable_16bit_access(sc);
+	sc->sc_write_mbufs = ed_shmem_write_mbufs;
 	return (error);
 }
 
diff --git a/sys/dev/ed/if_edvar.h b/sys/dev/ed/if_edvar.h
index 66ca79b7dc51..d7d3a8e0ae63 100644
--- a/sys/dev/ed/if_edvar.h
+++ b/sys/dev/ed/if_edvar.h
@@ -71,6 +71,7 @@ struct ed_softc {
         void	(*sc_tick)(void *);
 	void (*readmem)(struct ed_softc *sc, bus_size_t src, uint8_t *dst,
 	    uint16_t amount);
+	u_short	(*sc_write_mbufs)(struct ed_softc *, struct mbuf *, bus_size_t);
 
 	int	nic_offset;	/* NIC (DS8390) I/O bus address offset */
 	int	asic_offset;	/* ASIC I/O bus address offset */
@@ -215,14 +216,10 @@ int	ed_isa_mem_ok(device_t, u_long, u_int); /* XXX isa specific */
 void	ed_stop(struct ed_softc *);
 void	ed_shmem_readmem16(struct ed_softc *, bus_size_t, uint8_t *, uint16_t);
 void	ed_shmem_readmem8(struct ed_softc *, bus_size_t, uint8_t *, uint16_t);
+u_short	ed_shmem_write_mbufs(struct ed_softc *, struct mbuf *, bus_size_t);
 void	ed_pio_readmem(struct ed_softc *, bus_size_t, uint8_t *, uint16_t);
 void	ed_pio_writemem(struct ed_softc *, uint8_t *, uint16_t, uint16_t);
-
-/* The following is unsatisfying XXX */
-#ifdef ED_HPP
-void	ed_hpp_readmem(struct ed_softc *, bus_size_t, uint8_t *, uint16_t);
-u_short	ed_hpp_write_mbufs(struct ed_softc *, struct mbuf *, int);
-#endif
+u_short	ed_pio_write_mbufs(struct ed_softc *, struct mbuf *, bus_size_t);
 
 void	ed_disable_16bit_access(struct ed_softc *);
 void	ed_enable_16bit_access(struct ed_softc *);