From de1a3da5a7fe7f8beed0b1808419ae97caf5629c Mon Sep 17 00:00:00 2001
From: toggo9 <121191375+toggo9@users.noreply.github.com>
Date: Tue, 24 Jun 2025 23:30:45 +0200
Subject: [PATCH 1/4] Add Alaris Cobalt LPX machine code.

---
 src/machine/m_at_386dx_486.c | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/src/machine/m_at_386dx_486.c b/src/machine/m_at_386dx_486.c
index 0c0582c3c..333bcfd92 100644
--- a/src/machine/m_at_386dx_486.c
+++ b/src/machine/m_at_386dx_486.c
@@ -2869,6 +2869,35 @@ machine_at_ga486l_init(const machine_t *model)
     return ret;
 }
 
+int
+machine_at_cobalt_init(const machine_t *model)
+{
+    int ret;
+
+    ret = bios_load_linear("roms/machines/cobalt/Cobalt_2.3.BIN",
+                           0x000e0000, 131072, 0);
+
+    if (bios_only || !ret)
+        return ret;
+	
+	machine_at_common_init(model);
+
+    device_add(&opti499_device);
+	device_add(&ide_opti611_vlb_device);
+	device_add(&ide_isa_sec_device);
+	device_add(&fdc37c665_device);
+	
+    device_add(&keyboard_ps2_ami_device);
+	
+	if (gfxcard[0] == VID_INTERNAL)
+        device_add(machine_get_vid_device(machine));
+
+    if (fdc_current[0] == FDC_INTERNAL)
+        device_add(&fdc_at_device);
+
+    return ret;
+}
+
 int
 machine_at_cougar_init(const machine_t *model)
 {

From 066e7cc5eea6dbf9bb7fc58623b562b7a0759978 Mon Sep 17 00:00:00 2001
From: toggo9 <121191375+toggo9@users.noreply.github.com>
Date: Tue, 24 Jun 2025 23:31:23 +0200
Subject: [PATCH 2/4] Add Alaris Cobalt LPX machine table entry.

---
 src/machine/machine_table.c | 39 +++++++++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)

diff --git a/src/machine/machine_table.c b/src/machine/machine_table.c
index 3f324f4d6..2b7da7494 100644
--- a/src/machine/machine_table.c
+++ b/src/machine/machine_table.c
@@ -7179,6 +7179,45 @@ const machine_t machines[] = {
         .snd_device = NULL,
         .net_device = NULL
     },
+    {
+        .name = "[OPTi 499] Alaris Cobalt LPX",
+        .internal_name = "cobalt",
+        .type = MACHINE_TYPE_486_S2,
+        .chipset = MACHINE_CHIPSET_OPTI_499,
+        .init = machine_at_cobalt_init,
+        .p1_handler = NULL,
+        .gpio_handler = NULL,
+        .available_flag = MACHINE_AVAILABLE,
+        .gpio_acpi_handler = NULL,
+        .cpu = {
+            .package = CPU_PKG_SOCKET3 | CPU_PKG_486BL,
+            .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_PS2_VLB,
+        .flags = MACHINE_APM | MACHINE_VIDEO | MACHINE_IDE_DUAL,
+        .ram = {
+            .min = 1024,
+            .max = 65536,
+            .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 = &gd5428_vlb_onboard_device,
+        .snd_device = NULL,
+        .net_device = NULL
+    },
     /* Has AMIKey-2 'H' KBC firmware. */
     {
         .name = "[OPTi 499] Alaris COUGAR 486BL",

From ca1390f3bb25e4bf67671fbc2efa98beaac4ca07 Mon Sep 17 00:00:00 2001
From: toggo9 <121191375+toggo9@users.noreply.github.com>
Date: Tue, 24 Jun 2025 23:32:05 +0200
Subject: [PATCH 3/4] Add Alaris Cobalt LPX machine definition.

---
 src/include/86box/machine.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/include/86box/machine.h b/src/include/86box/machine.h
index 90b596ae8..39fb1a933 100644
--- a/src/include/86box/machine.h
+++ b/src/include/86box/machine.h
@@ -517,6 +517,7 @@ 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_cobalt_init(const machine_t *);
 extern int machine_at_cougar_init(const machine_t *);
 
 extern int machine_at_acc386_init(const machine_t *);

From 6e695512f7a21a90464d9921326320e10c419abc Mon Sep 17 00:00:00 2001
From: toggo9 <121191375+toggo9@users.noreply.github.com>
Date: Tue, 24 Jun 2025 23:49:29 +0200
Subject: [PATCH 4/4] Block usage of Pentium OverDrive on the Alaris Cobalt
 LPX.

It won't post with it.
---
 src/machine/machine_table.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/machine/machine_table.c b/src/machine/machine_table.c
index 2b7da7494..e779eb753 100644
--- a/src/machine/machine_table.c
+++ b/src/machine/machine_table.c
@@ -7191,7 +7191,7 @@ const machine_t machines[] = {
         .gpio_acpi_handler = NULL,
         .cpu = {
             .package = CPU_PKG_SOCKET3 | CPU_PKG_486BL,
-            .block = CPU_BLOCK_NONE,
+            .block = CPU_BLOCK(CPU_P24T),
             .min_bus = 0,
             .max_bus = 0,
             .min_voltage = 0,