diff --git a/src/include/86box/nvr.h b/src/include/86box/nvr.h
index 9485c7dcb..4d187b785 100644
--- a/src/include/86box/nvr.h
+++ b/src/include/86box/nvr.h
@@ -95,6 +95,7 @@ extern const device_t ami_1992_nvr_device;
 extern const device_t ami_1994_nvr_device;
 extern const device_t ami_1995_nvr_device;
 extern const device_t via_nvr_device;
+extern const device_t piix4_ami_1995_nvr_device;
 extern const device_t p6rp4_nvr_device;
 extern const device_t martin_nvr_device;
 extern const device_t elt_nvr_device;
diff --git a/src/nvr_at.c b/src/nvr_at.c
index 38a97560b..c25c482d8 100644
--- a/src/nvr_at.c
+++ b/src/nvr_at.c
@@ -1173,8 +1173,15 @@ nvr_at_init(const device_t *info)
             local->cent = RTC_CENTURY_VIA;
             break;
         case 8: /* Epson Equity LT */
-            nvr->irq    = -1;
-            local->cent = RTC_CENTURY_ELT;
+            if ((info->local & 0x1f) == 0x18) {
+                local->flags |= (FLAG_PIIX4 | FLAG_AMI_1995_HACK);
+                local->def = 0x00;
+                nvr->irq    = 8;
+                local->cent = RTC_CENTURY_AT;
+            } else {
+                nvr->irq    = -1;
+                local->cent = RTC_CENTURY_ELT;
+            }
             break;
 
         default:
@@ -1445,6 +1452,20 @@ const device_t via_nvr_device = {
     .config        = NULL
 };
 
+const device_t piix4_ami_1995_nvr_device = {
+    .name          = "Intel PIIX4 AMI WinBIOS 1995 PC/AT NVRAM",
+    .internal_name = "piix4_ami_1995_nvr",
+    .flags         = DEVICE_ISA16,
+    .local         = 0x10 | 8,
+    .init          = nvr_at_init,
+    .close         = nvr_at_close,
+    .reset         = nvr_at_reset,
+    .available     = NULL,
+    .speed_changed = nvr_at_speed_changed,
+    .force_redraw  = NULL,
+    .config        = NULL
+};
+
 const device_t p6rp4_nvr_device = {
     .name          = "ASUS P/I-P6RP4 PC/AT NVRAM",
     .internal_name = "p6rp4_nvr",