diff --git a/src/disk/hdc_ide_rz1000.c b/src/disk/hdc_ide_rz1000.c
index 8e664dd92..6b7aa68e8 100644
--- a/src/disk/hdc_ide_rz1000.c
+++ b/src/disk/hdc_ide_rz1000.c
@@ -208,6 +208,15 @@ rz1000_reset(void *priv)
     dev->regs[0x0a] = 0x01;       /* IDE controller */
     dev->regs[0x0b] = 0x01;       /* Mass storage controller */
 
+    dev->regs[0x10] = 0xf1;
+    dev->regs[0x11] = 0x01;
+    dev->regs[0x14] = 0xf5;
+    dev->regs[0x15] = 0x03;
+    dev->regs[0x18] = 0x71;
+    dev->regs[0x19] = 0x01;
+    dev->regs[0x1c] = 0x75;
+    dev->regs[0x1d] = 0x03;
+
     dev->irq_mode[0] = dev->irq_mode[1] = 0;
     dev->irq_pin                        = PCI_INTA;
     dev->irq_line                       = 14;
diff --git a/src/machine/machine_table.c b/src/machine/machine_table.c
index aacc69d59..eb899506a 100644
--- a/src/machine/machine_table.c
+++ b/src/machine/machine_table.c
@@ -11390,7 +11390,7 @@ const machine_t machines[] = {
         .default_jumpered_ecp_dma = 3,
         .kbc_device = &kbc_at_device,
         .kbc_params = KBC_VEN_PHOENIX | 0x00012900,
-        .kbc_p1 = 0x00000cf0,
+        .kbc_p1 = 0x00001cf0,
         .gpio = 0xffffffff,
         .gpio_acpi = 0xffffffff,
         .device = &batman_device,
@@ -11976,7 +11976,7 @@ const machine_t machines[] = {
         .default_jumpered_ecp_dma = 3,
         .kbc_device = &kbc_at_device,
         .kbc_params = KBC_VEN_PHOENIX | 0x00012900,
-        .kbc_p1 = 0x00000cf0,
+        .kbc_p1 = 0x00001cf0,
         .gpio = 0xffffffff,
         .gpio_acpi = 0xffffffff,
         .device = &plato_device,