diff --git a/VERSION b/VERSION
index 26eb25c..b68ffee 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.0.577
+1.0.578
diff --git a/sky130/custom/sky130_fd_io/cdl/sky130_ef_io.cdl b/sky130/custom/sky130_fd_io/cdl/sky130_ef_io.cdl
index c0f0d2a..599753e 100644
--- a/sky130/custom/sky130_fd_io/cdl/sky130_ef_io.cdl
+++ b/sky130/custom/sky130_fd_io/cdl/sky130_ef_io.cdl
@@ -606,19 +606,20 @@
 *----------------------------------------------------------
 * sky130_ef_io__top_power_hvc
 * Power pad instantiates top_power_hvc_wpadv2 unchanged
-* except for tripling the amount of metal at the core
-* connection, for high-current supply applications.
+* except for tripling the amount of metal at the core con-
+* nection, for high-current supply applications.  This pad
+* has an equivalent netlist to sky130_ef_io__vccd_hvc_pad.
 *----------------------------------------------------------
 
 .SUBCKT sky130_ef_io__top_power_hvc
-+ AMUXBUS_A AMUXBUS_B DRN_HVC P_CORE P_PAD
++ AMUXBUS_A AMUXBUS_B DRN_HVC
 + SRC_BDY_HVC VCCD_PAD VSSA VDDA VSWITCH VDDIO_Q VCCHIB
 + VDDIO VCCD VSSIO VSSD VSSIO_Q
 
 * Instantiate the underlying power pad (connects P_PAD to VCCD)
 Xsky130_fd_io__top_power_hvc_base
 + AMUXBUS_A AMUXBUS_B DRN_HVC VDDIO PADISOL PADISOR
-+ P_CORE P_PAD SRC_BDY_HVC VCCD VCCHIB VDDA VDDIO VDDIO_Q
++ VCCD VCCD_PAD SRC_BDY_HVC VCCD VCCHIB VDDA VDDIO VDDIO_Q
 + VSSA VSSD VSSIO VSSIO_Q VSWITCH
 + sky130_fd_io__top_power_hvc_wpadv2