From 9a5ec04ec51407204de62e2693f90b6c15813e4f Mon Sep 17 00:00:00 2001
From: win2kgamer <47463859+win2kgamer@users.noreply.github.com>
Date: Mon, 16 Feb 2026 22:00:19 -0600
Subject: [PATCH] Tandy Sensation II: After further research the Tandy 3100 and
 MMPC series have a different BIOS and some board differences so rename the
 machine to reflect this

Also add a new Cirrus 5428 device with a fixed 1MB VRAM config for this machine
---
 src/include/86box/video.h   |  1 +
 src/machine/machine_table.c |  4 ++--
 src/video/vid_cl54xx.c      | 18 +++++++++++++++++-
 3 files changed, 20 insertions(+), 3 deletions(-)

diff --git a/src/include/86box/video.h b/src/include/86box/video.h
index 32e1ace03..d7369af28 100644
--- a/src/include/86box/video.h
+++ b/src/include/86box/video.h
@@ -387,6 +387,7 @@ extern const device_t gd5426_vlb_device;
 extern const device_t gd5426_onboard_device;
 extern const device_t gd5428_isa_device;
 extern const device_t gd5428_vlb_onboard_device;
+extern const device_t gd5428_vlb_onboard_tandy_device;
 extern const device_t gd5428_vlb_device;
 extern const device_t gd5428_diamond_speedstar_pro_b1_vlb_device;
 extern const device_t gd5428_boca_isa_device;
diff --git a/src/machine/machine_table.c b/src/machine/machine_table.c
index 654934e6c..f1006ffb4 100644
--- a/src/machine/machine_table.c
+++ b/src/machine/machine_table.c
@@ -8670,7 +8670,7 @@ const machine_t machines[] = {
     },
     /* Has a VLSI VL82C113A SCAMP Combination I/O which holds the KBC. */
     {
-        .name              = "[VLSI 82C486] Tandy Sensation! II (25-1651)/3100/MMPC",
+        .name              = "[VLSI 82C486] Tandy Sensation! II (25-1651)",
         .internal_name     = "sensation2",
         .type              = MACHINE_TYPE_486_S2,
         .chipset           = MACHINE_CHIPSET_VLSI_VL82C486,
@@ -8708,7 +8708,7 @@ const machine_t machines[] = {
         .kbd_device               = NULL,
         .fdc_device               = NULL,
         .sio_device               = NULL,
-        .vid_device               = &gd5428_onboard_vlb_device,
+        .vid_device               = &gd5428_vlb_onboard_tandy_device,
         .snd_device               = NULL,
         .net_device               = NULL
     },
diff --git a/src/video/vid_cl54xx.c b/src/video/vid_cl54xx.c
index 4445def97..c02f5191a 100644
--- a/src/video/vid_cl54xx.c
+++ b/src/video/vid_cl54xx.c
@@ -4442,7 +4442,9 @@ gd54xx_init(const device_t *info)
         gd54xx->vram_size = vram << 10;
     } else {
         if (id <= CIRRUS_ID_CLGD5428) {
-            if ((id == CIRRUS_ID_CLGD5426) && (info->local & 0x200))
+            if ((id == CIRRUS_ID_CLGD5428) && (info->local & 0x200) && (info->local & 0x1000))
+                vram = 1024;
+            else if ((id == CIRRUS_ID_CLGD5426) && (info->local & 0x200))
                 vram = 1024;
             else if (id == CIRRUS_ID_CLGD5401)
                 vram = 256;
@@ -5332,6 +5334,20 @@ const device_t gd5428_onboard_vlb_device = {
     .config        = gd542x_config
 };
 
+const device_t gd5428_vlb_onboard_tandy_device = {
+    .name          = "Cirrus Logic GD5428 (VLB) (On-Board) (Tandy)",
+    .internal_name = "cl_gd5428_vlb_onboard_tandy",
+    .flags         = DEVICE_VLB,
+    .local         = CIRRUS_ID_CLGD5428 | 0x200 | 0x1000,
+    .init          = gd54xx_init,
+    .close         = gd54xx_close,
+    .reset         = gd54xx_reset,
+    .available     = NULL,
+    .speed_changed = gd54xx_speed_changed,
+    .force_redraw  = gd54xx_force_redraw,
+    .config        = NULL
+};
+
 const device_t gd5429_isa_device = {
     .name          = "Cirrus Logic GD5429 (ISA)",
     .internal_name = "cl_gd5429_isa",