diff --git a/src/chipset/CMakeLists.txt b/src/chipset/CMakeLists.txt
index 6018dd045..94ef408f6 100644
--- a/src/chipset/CMakeLists.txt
+++ b/src/chipset/CMakeLists.txt
@@ -39,6 +39,7 @@ add_library(chipset OBJECT
     intel_i450kx.c
     intel_sio.c
     intel_piix.c
+    isa486c.c
     ../ioapic.c
     neat.c
     opti283.c
diff --git a/src/device/postcard.c b/src/device/postcard.c
index 9e2c629c1..b91d8b402 100644
--- a/src/device/postcard.c
+++ b/src/device/postcard.c
@@ -158,6 +158,8 @@ postcard_init(UNUSED(const device_t *info))
         postcard_port = 0x84; /* ISA Compaq machines */
     else if (strstr(machines[machine].name, "Olivetti"))
         postcard_port = 0x378; /* Olivetti machines */
+    else if (!strcmp(machines[machine].internal_name, "isa486c"))
+        postcard_port = 0x5080; /* ASUS ISA-486C */
     else
         postcard_port = 0x80; /* AT and clone machines */
     postcard_log("POST card initializing on port %04Xh\n", postcard_port);
diff --git a/src/include/86box/chipset.h b/src/include/86box/chipset.h
index 3a65bbce9..fe088b209 100644
--- a/src/include/86box/chipset.h
+++ b/src/include/86box/chipset.h
@@ -37,6 +37,9 @@ extern const device_t ali6117d_device;
 /* AMD */
 extern const device_t amd640_device;
 
+/* ASUS */
+extern const device_t isa486c_device;
+
 /* Compaq */
 extern const device_t compaq_386_device;
 extern const device_t compaq_genoa_device;
diff --git a/src/include/86box/machine.h b/src/include/86box/machine.h
index d8c213d53..996f2bf5f 100644
--- a/src/include/86box/machine.h
+++ b/src/include/86box/machine.h
@@ -508,6 +508,7 @@ extern int machine_at_pc916sx_init(const machine_t *);
    sure this appear here (and in the .c file) in the order and position
    in which they appear in the machine table. */
 extern int machine_at_dataexpert386wb_init(const machine_t *);
+extern int machine_at_isa486c_init(const machine_t *);
 extern int machine_at_genoa486_init(const machine_t *);
 extern int machine_at_ga486l_init(const machine_t *);
 extern int machine_at_cougar_init(const machine_t *);
diff --git a/src/machine/m_at_386dx_486.c b/src/machine/m_at_386dx_486.c
index ed8f75a84..f50e8af42 100644
--- a/src/machine/m_at_386dx_486.c
+++ b/src/machine/m_at_386dx_486.c
@@ -2445,6 +2445,35 @@ machine_at_dataexpert386wb_init(const machine_t *model)
     return ret;
 }
 
+int
+machine_at_isa486c_init(const machine_t *model)
+{
+    int ret;
+
+#if 0
+    ret = bios_load_linear("roms/machines/isa486c/asus-isa-486c-401a0-040591-657e2c17a0218417632602.bin",
+                           0x000f0000, 65536, 0);
+#else
+    ret = bios_load_linear("roms/machines/isa486c/128k.bin",
+                           0x000e0000, 131072, 0);
+#endif
+
+    if (bios_only || !ret)
+        return ret;
+
+    machine_at_common_init(model);
+
+    device_add(&isa486c_device);
+    device_add(&port_92_key_device);
+
+    device_add(&keyboard_at_ami_device);
+
+    if (fdc_current[0] == FDC_INTERNAL)
+        device_add(&fdc_at_device);
+
+    return ret;
+}
+
 int
 machine_at_genoa486_init(const machine_t *model)
 {
diff --git a/src/machine/machine_table.c b/src/machine/machine_table.c
index 7e0ae8d64..adf132a5d 100644
--- a/src/machine/machine_table.c
+++ b/src/machine/machine_table.c
@@ -5998,6 +5998,46 @@ const machine_t machines[] = {
     },
 
     /* 486 machines - Socket 1 */
+    /* Has Award KBC firmware. */
+    {
+        .name = "[ZyMOS Poach] ASUS ISA-486C",
+        .internal_name = "isa486c",
+        .type = MACHINE_TYPE_486,
+        .chipset = MACHINE_CHIPSET_ZYMOS_POACH,
+        .init = machine_at_isa486c_init,
+        .p1_handler = NULL,
+        .gpio_handler = NULL,
+        .available_flag = MACHINE_AVAILABLE,
+        .gpio_acpi_handler = NULL,
+        .cpu = {
+            .package = CPU_PKG_SOCKET1,
+            .block = CPU_BLOCK_NONE,
+            .min_bus = 0,
+            .max_bus = 0,
+            .min_voltage = 0,
+            .max_voltage = 0,
+            .min_multi = 0,
+            .max_multi = 0
+        },
+        .bus_flags = MACHINE_AT,
+        .flags = MACHINE_APM,
+        .ram = {
+            .min = 1024,
+            .max = 16384,
+            .step = 1024
+        },
+        .nvrmask = 127,
+        .kbc_device = NULL,
+        .kbc_p1 = 0xff,
+        .gpio = 0xffffffff,
+        .gpio_acpi = 0xffffffff,
+        .device = NULL,
+        .fdc_device = NULL,
+        .sio_device = NULL,
+        .vid_device = NULL,
+        .snd_device = NULL,
+        .net_device = NULL
+    },
     /* Has AMI KF KBC firmware. */
     {
         .name = "[ZyMOS Poach] Genoa Unknown 486",