diff --git a/src/chipset/opti283.c b/src/chipset/opti283.c
new file mode 100644
index 000000000..a4dad3d29
--- /dev/null
+++ b/src/chipset/opti283.c
@@ -0,0 +1,175 @@
+/*
+ * 86Box	A hypervisor and IBM PC system emulator that specializes in
+ *		running old operating systems and software designed for IBM
+ *		PC systems and compatibles from 1981 through fairly recent
+ *		system designs based on the PCI bus.
+ *
+ *		This file is part of the 86Box distribution.
+ *
+ *		Implementation of the OPTi 82C283 chipset.
+ *
+ *
+ *
+ *      Authors: Tiseno100
+ *
+ *		Copyright 2020 Tiseno100
+ *
+ */
+
+#include <stdarg.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <wchar.h>
+#define HAVE_STDARG_H
+#include <86box/86box.h>
+#include "cpu.h"
+#include <86box/timer.h>
+#include <86box/io.h>
+#include <86box/device.h>
+#include <86box/keyboard.h>
+#include <86box/mem.h>
+#include <86box/fdd.h>
+#include <86box/fdc.h>
+#include <86box/port_92.h>
+#include <86box/chipset.h>
+
+typedef struct
+{
+    uint8_t	index,
+	regs[256];
+} opti283_t;
+
+static void opti283_shadow_recalc(opti283_t *dev)
+{
+uint32_t base;
+uint32_t shflags, i = 0;
+
+shadowbios = 0;
+shadowbios_write = 0;
+
+    /* F0000 - FFFFF segmentation */
+if(!(dev->regs[0x11] & 0x80)){
+        shadowbios = 1;
+        shadowbios_write = 0;
+        mem_set_mem_state(0xf0000, 0x10000, MEM_READ_INTERNAL | MEM_WRITE_DISABLED);
+} else {
+        shadowbios = 0;
+        shadowbios_write = 1;
+        mem_set_mem_state(0xf0000, 0x10000, MEM_READ_EXTANY | MEM_WRITE_INTERNAL);
+}
+
+    /* C0000 - CFFFF segmentation */
+for(i = 4; i < 8; i++){
+    base = 0xc0000 + ((i-4) << 14);
+
+    if((dev->regs[0x13] & (1 << i)) & (dev->regs[0x11] & 0x10)){
+        shflags = MEM_READ_INTERNAL;
+        shflags |= (!(dev->regs[0x11] & 0x01)) ? MEM_WRITE_INTERNAL : MEM_WRITE_DISABLED;
+        mem_set_mem_state_both(base, 0x4000, shflags);
+    } else {
+        mem_set_mem_state_both(base, 0x4000, MEM_READ_EXTANY | MEM_WRITE_EXTANY);
+}
+}
+
+    /* D0000 - DFFFF segmentation */
+for(i = 0; i < 4; i++){
+    base = 0xd0000 + (i << 14);
+    if((dev->regs[0x12] & (1 << i)) & (dev->regs[0x11] & 0x20)){
+        shflags = MEM_READ_INTERNAL;
+        shflags |= (!(dev->regs[0x11] & 0x02)) ? MEM_WRITE_INTERNAL : MEM_WRITE_DISABLED;
+        mem_set_mem_state(base, 0x4000, shflags);
+    } else mem_set_mem_state(base, 0x4000, MEM_READ_EXTANY | MEM_WRITE_EXTANY);
+}
+
+    /* E0000 - EFFFF segmentation */
+for(i = 4; i < 8; i++){
+    base = 0xe0000 + ((i-4) << 14);
+    if((dev->regs[0x12] & (1 << i)) & (dev->regs[0x11] & 0x40)){
+        shflags = MEM_READ_INTERNAL;
+        shflags |= (!(dev->regs[0x11] & 0x04)) ? MEM_WRITE_INTERNAL : MEM_WRITE_DISABLED;
+        mem_set_mem_state(base, 0x4000, shflags);
+    } else mem_set_mem_state(base, 0x4000, MEM_READ_EXTANY | MEM_WRITE_EXTANY);
+}
+
+}
+
+static void
+opti283_write(uint16_t addr, uint8_t val, void *priv)
+{
+    opti283_t *dev = (opti283_t *) priv;
+
+    switch (addr) {
+	case 0x22:
+		dev->index = val;
+		break;
+	case 0x24:
+        /*pclog("OPTi 283: dev->regs[%02x] = %02x\n", dev->index, val);*/
+		dev->regs[dev->index] = val;
+
+        switch(dev->index){
+            case 0x10:
+            cpu_update_waitstates();
+
+            case 0x11:
+            case 0x12:
+            case 0x13:
+            opti283_shadow_recalc(dev);
+            break;
+        }
+		break;
+    }
+}
+
+
+static uint8_t
+opti283_read(uint16_t addr, void *priv)
+{
+    uint8_t ret = 0xff;
+    opti283_t *dev = (opti283_t *) priv;
+
+    switch (addr) {
+	case 0x24:
+		ret = dev->regs[dev->index];
+		break;
+    }
+
+    return ret;
+}
+
+
+static void
+opti283_close(void *priv)
+{
+    opti283_t *dev = (opti283_t *) priv;
+
+    free(dev);
+}
+
+
+static void *
+opti283_init(const device_t *info)
+{
+    opti283_t *dev = (opti283_t *) malloc(sizeof(opti283_t));
+    memset(dev, 0, sizeof(opti283_t));
+
+    io_sethandler(0x022, 0x0001, opti283_read, NULL, NULL, opti283_write, NULL, NULL, dev);
+    io_sethandler(0x024, 0x0001, opti283_read, NULL, NULL, opti283_write, NULL, NULL, dev);
+
+    dev->regs[0x10] = 0x3f;
+    dev->regs[0x11] = 0xf0;
+    opti283_shadow_recalc(dev);
+    
+    return dev;
+}
+
+
+const device_t opti283_device = {
+    "OPTi 82C283",
+    0,
+    0,
+    opti283_init, opti283_close, NULL,
+    NULL, NULL, NULL,
+    NULL
+};
diff --git a/src/chipset/opti291.c b/src/chipset/opti291.c
new file mode 100644
index 000000000..cad4341a9
--- /dev/null
+++ b/src/chipset/opti291.c
@@ -0,0 +1,145 @@
+/*
+ * 86Box	A hypervisor and IBM PC system emulator that specializes in
+ *		running old operating systems and software designed for IBM
+ *		PC systems and compatibles from 1981 through fairly recent
+ *		system designs based on the PCI bus.
+ *
+ *		This file is part of the 86Box distribution.
+ *
+ *		Implementation of the OPTi 82C291 chipset.
+ 
+ * Authors:	plant/nerd73
+ *
+ *              Copyright 2020 plant/nerd73.
+ */
+#include <stdarg.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <wchar.h>
+#define HAVE_STDARG_H
+#include <86box/86box.h>
+#include "cpu.h"
+#include <86box/timer.h>
+#include <86box/io.h>
+#include <86box/device.h>
+#include <86box/keyboard.h>
+#include <86box/mem.h>
+#include <86box/fdd.h>
+#include <86box/fdc.h>
+#include <86box/port_92.h>
+#include <86box/chipset.h>
+
+typedef struct
+{
+    uint8_t	index,
+	regs[256];
+} opti291_t;
+
+static void opti291_recalc(opti291_t *dev)
+{
+	uint32_t base;
+	uint32_t i, shflags, write = 0;
+		
+	for (i = 0; i < 4; i++) {
+	base = 0xe0000 + (i << 14);
+	shflags = (dev->regs[0x24] & (1 << (i+4))) ? MEM_READ_INTERNAL : MEM_READ_EXTANY;
+	shflags |= (dev->regs[0x24] & (1 << (i))) ? write : MEM_WRITE_EXTANY;
+	write = (dev->regs[0x27] & 0x40) ? MEM_WRITE_DISABLED : MEM_WRITE_INTERNAL;
+	mem_set_mem_state(base, 0x4000, shflags);
+	}
+	for (i = 0; i < 4; i++) {
+	base = 0xd0000 + (i << 14);
+	shflags = (dev->regs[0x25] & (1 << (i+4))) ? MEM_READ_INTERNAL : MEM_READ_EXTANY;
+	shflags |= (dev->regs[0x25] & (1 << (i))) ? write : MEM_WRITE_EXTANY;
+	write = (dev->regs[0x27] & 0x20) ? MEM_WRITE_DISABLED : MEM_WRITE_INTERNAL;
+	mem_set_mem_state(base, 0x4000, shflags);
+	}
+	
+	for (i = 0; i < 4; i++) {
+	base = 0xc0000 + (i << 14);
+	shflags = (dev->regs[0x26] & (1 << (i+4))) ? MEM_READ_INTERNAL : MEM_READ_EXTANY;
+	shflags |= (dev->regs[0x26] & (1 << i)) ? write : MEM_WRITE_EXTANY;
+	write = (dev->regs[0x27] & 0x10) ? MEM_WRITE_DISABLED : MEM_WRITE_INTERNAL;
+	mem_set_mem_state(base, 0x4000, shflags);
+	}
+    flushmmucache();	
+}	
+static void
+opti291_write(uint16_t addr, uint8_t val, void *priv)
+{
+    opti291_t *dev = (opti291_t *) priv;
+
+    switch (addr) {
+	case 0x22:
+		dev->index = val;
+		break;
+	case 0x24:
+        pclog("OPTi 291: dev->regs[%02x] = %02x\n", dev->index, val);
+		dev->regs[dev->index] = val;
+
+        switch(dev->index){
+				case 0x21:
+					cpu_update_waitstates();
+					break;
+				case 0x24:
+				case 0x25:
+				case 0x26:
+				case 0x27:				
+					opti291_recalc(dev);
+					break;
+        }
+		break;
+    }
+}
+
+
+static uint8_t
+opti291_read(uint16_t addr, void *priv)
+{
+    uint8_t ret = 0xff;
+    opti291_t *dev = (opti291_t *) priv;
+
+    switch (addr) {
+	case 0x24:
+		ret = dev->regs[dev->index];
+		break;
+    }
+
+    return ret;
+}
+
+
+static void
+opti291_close(void *priv)
+{
+    opti291_t *dev = (opti291_t *) priv;
+
+    free(dev);
+}
+
+
+static void *
+opti291_init(const device_t *info)
+{
+    opti291_t *dev = (opti291_t *) malloc(sizeof(opti291_t));
+    memset(dev, 0, sizeof(opti291_t));
+
+    io_sethandler(0x022, 0x0001, opti291_read, NULL, NULL, opti291_write, NULL, NULL, dev);
+    io_sethandler(0x024, 0x0001, opti291_read, NULL, NULL, opti291_write, NULL, NULL, dev);
+
+    opti291_recalc(dev);
+    
+    return dev;
+}
+
+
+const device_t opti291_device = {
+    "OPTi 82C291",
+    0,
+    0,
+    opti291_init, opti291_close, NULL,
+    NULL, NULL, NULL,
+    NULL
+};
diff --git a/src/codegen_new/codegen_backend_x86.c b/src/codegen_new/codegen_backend_x86.c
index 1e22caa2e..036e8a621 100644
--- a/src/codegen_new/codegen_backend_x86.c
+++ b/src/codegen_new/codegen_backend_x86.c
@@ -304,12 +304,20 @@ void codegen_backend_init()
         block_write_data = NULL;
 
         cpu_state.old_fp_control = 0;
+#ifndef _MSC_VER
         asm(
                 "fstcw %0\n"
                 "stmxcsr %1\n"
                 : "=m" (cpu_state.old_fp_control2),
                   "=m" (cpu_state.old_fp_control)
         );
+#else
+        __asm
+        {
+                fstcw cpu_state.old_fp_control2
+                stmxcsr cpu_state.old_fp_control
+        }
+#endif
         cpu_state.trunc_fp_control = cpu_state.old_fp_control | 0x6000;
 }
 
diff --git a/src/cpu/cpu.c b/src/cpu/cpu.c
index efeb4b94c..26e90490a 100644
--- a/src/cpu/cpu.c
+++ b/src/cpu/cpu.c
@@ -369,8 +369,8 @@ cpu_set(void)
         is8086       = (cpu_s->cpu_type > CPU_8088);
         is286        = (cpu_s->cpu_type >= CPU_286);
         is386        = (cpu_s->cpu_type >= CPU_386SX);
-	israpidcad   = (cpu_s->cpu_type == CPU_RAPIDCAD);
-	isibm486     = (cpu_s->cpu_type == CPU_IBM486SLC) || (cpu_s->cpu_type == CPU_IBM486BL);
+        israpidcad   = (cpu_s->cpu_type == CPU_RAPIDCAD);
+        isibm486     = (cpu_s->cpu_type == CPU_IBM386SLC) || (cpu_s->cpu_type == CPU_IBM486SLC) || (cpu_s->cpu_type == CPU_IBM486BL);
         is486        = (cpu_s->cpu_type >= CPU_i486SX) || (cpu_s->cpu_type == CPU_486SLC || cpu_s->cpu_type == CPU_486DLC || cpu_s->cpu_type == CPU_RAPIDCAD);
         is486sx      = (cpu_s->cpu_type >= CPU_i486SX) && (cpu_s->cpu_type < CPU_i486SX2);
         is486sx2     = (cpu_s->cpu_type >= CPU_i486SX2) && (cpu_s->cpu_type < CPU_i486DX);
@@ -627,7 +627,8 @@ cpu_set(void)
                 x86_setopcodes(ops_386, ops_ibm486_0f, dynarec_ops_386, dynarec_ops_ibm486_0f);
 #else
                 x86_setopcodes(ops_386, ops_ibm486_0f);
-#endif		
+#endif
+                cpu_features = CPU_FEATURE_MSR;		
                 case CPU_386SX:
                 timing_rr  = 2;   /*register dest - register src*/
                 timing_rm  = 6;   /*register dest - memory src*/
@@ -665,6 +666,7 @@ cpu_set(void)
 #else
                 x86_setopcodes(ops_386, ops_ibm486_0f);
 #endif
+                cpu_features = CPU_FEATURE_MSR;
                 case CPU_386DX:
                 if (fpu_type == FPU_287) /*In case we get Deskpro 386 emulation*/
                 {
diff --git a/src/cpu/cpu.h b/src/cpu/cpu.h
index b761a6c66..cc5e1e50f 100644
--- a/src/cpu/cpu.h
+++ b/src/cpu/cpu.h
@@ -296,10 +296,10 @@ typedef struct {
 
 #ifdef USE_NEW_DYNAREC
     uint32_t	old_fp_control, new_fp_control;
-#if defined i386 || defined __i386 || defined __i386__ || defined _X86_
+#if defined i386 || defined __i386 || defined __i386__ || defined _X86_ || defined _M_IX86
     uint16_t	old_fp_control2, new_fp_control2;
 #endif
-#if defined i386 || defined __i386 || defined __i386__ || defined _X86_ || defined __amd64__
+#if defined i386 || defined __i386 || defined __i386__ || defined _X86_ || defined _M_IX86 || defined __amd64__ || defined _M_X64
     uint32_t	trunc_fp_control;
 #endif
 #endif
diff --git a/src/include/86box/chipset.h b/src/include/86box/chipset.h
index b25c37fe4..0368fe301 100644
--- a/src/include/86box/chipset.h
+++ b/src/include/86box/chipset.h
@@ -60,6 +60,8 @@ extern const device_t	slc90e66_device;
 extern const device_t	ioapic_device;
 
 /* OPTi */
+extern const device_t	opti283_device;
+extern const device_t	opti291_device;
 extern const device_t	opti493_device;
 extern const device_t	opti495_device;
 extern const device_t	opti802g_device;
diff --git a/src/include/86box/machine.h b/src/include/86box/machine.h
index e1bbf77d0..3848e7762 100644
--- a/src/include/86box/machine.h
+++ b/src/include/86box/machine.h
@@ -240,6 +240,8 @@ extern int	machine_at_adi386sx_init(const machine_t *);
 extern int	machine_at_commodore_sl386sx_init(const machine_t *);
 extern int	machine_at_wd76c10_init(const machine_t *);
 
+extern int  machine_at_awardsx_init(const machine_t *);
+
 #ifdef EMU_DEVICE_H
 extern const device_t	*at_ama932j_get_device(void);
 extern const device_t	*at_commodore_sl386sx_get_device(void);
@@ -252,6 +254,8 @@ extern int	machine_at_asus386_init(const machine_t *);
 extern int  machine_at_ecs386_init(const machine_t *);
 extern int	machine_at_micronics386_init(const machine_t *);
 
+extern int	machine_at_rycleopardlx_init(const machine_t *);
+
 extern int	machine_at_pb410a_init(const machine_t *);
 
 extern int	machine_at_acera1g_init(const machine_t *);
diff --git a/src/machine/m_at_286_386sx.c b/src/machine/m_at_286_386sx.c
index b0a707ce8..9f53c8b28 100644
--- a/src/machine/m_at_286_386sx.c
+++ b/src/machine/m_at_286_386sx.c
@@ -515,3 +515,21 @@ machine_at_commodore_sl386sx_init(const machine_t *model)
 
     return ret;
 }
+int
+machine_at_awardsx_init(const machine_t *model)
+{
+    int ret;
+
+    ret = bios_load_linear(L"roms/machines/awardsx/Unknown 386SX OPTi291 - Award (original).BIN",
+			   0x000f0000, 65536, 0);
+
+    if (bios_only || !ret)
+	return ret;
+
+    machine_at_init(model);
+
+    device_add(&opti291_device);
+    device_add(&fdc_at_device);
+
+    return ret;
+}
diff --git a/src/machine/m_at_386dx_486.c b/src/machine/m_at_386dx_486.c
index 5398a16b1..a1f9e9ce4 100644
--- a/src/machine/m_at_386dx_486.c
+++ b/src/machine/m_at_386dx_486.c
@@ -102,6 +102,25 @@ machine_at_ecs386_init(const machine_t *model)
     return ret;
 }
 
+int
+machine_at_rycleopardlx_init(const machine_t *model)
+{
+    int ret;
+
+    ret = bios_load_linear(L"roms/machines/rycleopardlx/486-RYC-Leopard-LX.BIN",
+			   0x000f0000, 65536, 0);
+
+    if (bios_only || !ret)
+	return ret;
+
+    machine_at_common_init(model);
+
+    device_add(&opti283_device);
+    device_add(&keyboard_at_ami_device);
+    device_add(&fdc_at_device);
+
+    return ret;
+}
 
 int
 machine_at_pb410a_init(const machine_t *model)
diff --git a/src/machine/machine_table.c b/src/machine/machine_table.c
index a8a32e640..cb08e555a 100644
--- a/src/machine/machine_table.c
+++ b/src/machine/machine_table.c
@@ -173,7 +173,8 @@ const machine_t machines[] = {
     { "[SCAT] KMX-C-02",			"kmxc02",		MACHINE_TYPE_386SX,		{{"Intel", cpus_i386SX},      {"AMD", cpus_Am386SX}, {"Cyrix", cpus_486SLC}, {"",      NULL},     {"",      NULL}}, MACHINE_ISA | MACHINE_AT,										512,16384, 512, 127,	       machine_at_kmxc02_init, NULL			},
     { "[Intel 82335] Shuttle 386SX",		"shuttle386sx",		MACHINE_TYPE_386SX,		{{"Intel", cpus_i386SX},      {"AMD", cpus_Am386SX}, {"Cyrix", cpus_486SLC}, {"",      NULL},     {"",      NULL}}, MACHINE_ISA | MACHINE_AT,										512, 8192, 128, 127,	 machine_at_shuttle386sx_init, NULL			},
     { "[Intel 82335] ADI 386SX",		"adi386sx",		MACHINE_TYPE_386SX,		{{"Intel", cpus_i386SX},      {"AMD", cpus_Am386SX}, {"Cyrix", cpus_486SLC}, {"",      NULL},     {"",      NULL}}, MACHINE_ISA | MACHINE_AT,										512, 8192, 128, 127,	     machine_at_adi386sx_init, NULL			},
-
+    { "[OPTi 291] DTK Award 386SX",		"awardsx",		MACHINE_TYPE_386SX,		{{"Intel", cpus_i386SX},      {"AMD", cpus_Am386SX}, {"Cyrix", cpus_486SLC}, {"",      NULL},     {"",      NULL}}, MACHINE_ISA | MACHINE_AT | MACHINE_HDC,								512, 8192, 128, 127,		 machine_at_awardsx_init, NULL			},
+    
     /* 386SX machines which utilize the MCA bus */
     { "[MCA] IBM PS/2 model 55SX",		"ibmps2_m55sx",		MACHINE_TYPE_386SX,		{{"Intel", cpus_i386SX},      {"AMD", cpus_Am386SX}, {"Cyrix", cpus_486SLC}, {"IBM",cpus_IBM486SLC},{"",    NULL}}, MACHINE_MCA | MACHINE_AT | MACHINE_PS2 | MACHINE_VIDEO,						  1,    8,   1,  63,	  machine_ps2_model_55sx_init, NULL			},
 
@@ -197,7 +198,8 @@ const machine_t machines[] = {
     { "[ACC 2168] Packard Bell PB410A",		"pb410a",		MACHINE_TYPE_486,		{{"Intel", cpus_i486},        {"AMD", cpus_Am486},   {"Cyrix", cpus_Cx486},  {"",      NULL},     {"",      NULL}}, MACHINE_ISA | MACHINE_AT | MACHINE_PS2 | MACHINE_HDC | MACHINE_VIDEO,			  	  4,   36,   1, 127,	       machine_at_pb410a_init, NULL			},
 
     /* 486 machines */
-    { "[OPTi 495] Award 486 clone",		"award486",		MACHINE_TYPE_486,		{{"Intel", cpus_i486S1},      {"AMD", cpus_Am486S1}, {"Cyrix", cpus_Cx486S1},{"",      NULL},     {"",      NULL}}, MACHINE_ISA | MACHINE_VLB | MACHINE_AT | MACHINE_HDC,						  1,   32,   1, 127,	      machine_at_opti495_init, NULL			},    
+    { "[OPTi 283] RYC Leopard LX",		"rycleopardlx",		MACHINE_TYPE_486,		{{"IBM", cpus_IBM486SLC},     {"",      NULL},       {"",      NULL},        {"",      NULL},     {"",      NULL}}, MACHINE_ISA | MACHINE_AT | MACHINE_HDC,								  1,   16,   1, 127,     machine_at_rycleopardlx_init, NULL			},
+    { "[OPTi 495] Award 486 clone",		"award486",		MACHINE_TYPE_486,		{{"Intel", cpus_i486S1},      {"AMD", cpus_Am486S1}, {"Cyrix", cpus_Cx486S1},{"",      NULL},     {"",      NULL}}, MACHINE_ISA | MACHINE_VLB | MACHINE_AT | MACHINE_HDC,						  1,   32,   1, 127,	      machine_at_opti495_init, NULL			},
     { "[OPTi 495] MR 486 clone",		"mr486",		MACHINE_TYPE_486,		{{"Intel", cpus_i486},        {"AMD", cpus_Am486},   {"Cyrix", cpus_Cx486},  {"",      NULL},     {"",      NULL}}, MACHINE_ISA | MACHINE_VLB | MACHINE_AT | MACHINE_HDC,						  1,   32,   1, 127,	   machine_at_opti495_mr_init, NULL			},
     { "[OPTi 495] Dataexpert SX495 (486)",	"ami486",		MACHINE_TYPE_486,		{{"Intel", cpus_i486S1},      {"AMD", cpus_Am486S1}, {"Cyrix", cpus_Cx486S1},{"",      NULL},     {"",      NULL}}, MACHINE_ISA | MACHINE_VLB | MACHINE_AT | MACHINE_HDC,						  1,   32,   1, 127,	  machine_at_opti495_ami_init, NULL			},
     { "[OPTi 895] Jetway J-403TG",		"403tg",		MACHINE_TYPE_486,		{{"Intel", cpus_i486},        {"AMD", cpus_Am486},   {"Cyrix", cpus_Cx486},  {"",      NULL},     {"",      NULL}}, MACHINE_ISA | MACHINE_VLB | MACHINE_AT,								  1,   64,   1, 127,	        machine_at_403tg_init, NULL			},
diff --git a/src/video/vid_cl54xx.c b/src/video/vid_cl54xx.c
index c169253b0..478edd8f4 100644
--- a/src/video/vid_cl54xx.c
+++ b/src/video/vid_cl54xx.c
@@ -702,7 +702,7 @@ gd54xx_in(uint16_t addr, void *p)
 				case 0x17:
 					ret = svga->gdcreg[0x17] & ~(7 << 3);
 					if (svga->crtc[0x27] <= CIRRUS_ID_CLGD5429) {
-						if (svga->crtc[0x27] == CIRRUS_ID_CLGD5428) {
+						if ((svga->crtc[0x27] == CIRRUS_ID_CLGD5428) || (svga->crtc[0x27] == CIRRUS_ID_CLGD5426)) {
 							if (gd54xx->vlb)
 								ret |= (CL_GD5428_SYSTEM_BUS_VESA << 3);
 							else if (gd54xx->mca)
@@ -3023,9 +3023,9 @@ static void
 #endif
 
 	case CIRRUS_ID_CLGD5426:
-		if (info->local & 0x200) {
+		if (info->local & 0x200)
 			romfn = NULL;
-		} else		
+		else		
 			romfn = BIOS_GD5426_PATH;
 		break;
 
@@ -3082,15 +3082,18 @@ static void
 	vram = 1;
 	gd54xx->vram_size = 1 << 20;
     } else {
-	if (id >= CIRRUS_ID_CLGD5420)
-	    vram = device_get_config_int("memory");
-	else
-	    vram = 0;
-    
+	if (id >= CIRRUS_ID_CLGD5420) {
+		if ((id == CIRRUS_ID_CLGD5426) && (info->local & 0x200))
+			vram = 1;
+		else
+			vram = device_get_config_int("memory");
+	} else
+		vram = 0;
+
 	if (vram)
-	    gd54xx->vram_size = vram << 20;	
+		gd54xx->vram_size = vram << 20;	
 	else
-	    gd54xx->vram_size = 1 << 19;
+		gd54xx->vram_size = 1 << 19;
     }
 
     gd54xx->vram_mask = gd54xx->vram_size - 1;
@@ -3556,7 +3559,7 @@ const device_t gd5426_onboard_device =
     NULL,
     gd54xx_speed_changed,
     gd54xx_force_redraw,
-    gd5428_config
+    NULL
 };
 
 const device_t gd5428_isa_device =
diff --git a/src/video/vid_paradise.c b/src/video/vid_paradise.c
index 3b6f3acab..48e86544a 100644
--- a/src/video/vid_paradise.c
+++ b/src/video/vid_paradise.c
@@ -122,6 +122,7 @@ void paradise_out(uint16_t addr, uint8_t val, void *p)
                 {
                         svga->gdcreg[0xe] = val;
                         paradise_remap(paradise);
+			svga_recalctimings(svga);
                         return;
                 }
                 break;
@@ -251,9 +252,11 @@ void paradise_recalctimings(svga_t *svga)
 	if (paradise->type == WD90C30)
 		svga->interlace = (svga->crtc[0x2d] & 0x20);
 
-        svga->lowres = !(svga->gdcreg[0xe] & 0x01);
-        if (svga->bpp == 8 && !svga->lowres)
+	if (svga->gdcreg[0xe] & 0x01) {
+		svga->bpp = 8;
+		svga->lowres = 0;
                 svga->render = svga_render_8bpp_highres;
+	}
 }
 
 static void paradise_write(uint32_t addr, uint8_t val, void *p)
@@ -299,7 +302,7 @@ void *paradise_init(const device_t *info, uint32_t memsize)
 	switch(info->local) {
 		case PVGA1A:
 			svga_init(info, &paradise->svga, paradise, memsize, /*256kb*/
-				   NULL,
+				   paradise_recalctimings,
 				   paradise_in, paradise_out,
 				   NULL,
 				   NULL);
diff --git a/src/win/Makefile.mingw b/src/win/Makefile.mingw
index 4ba50ffb0..42554d5fa 100644
--- a/src/win/Makefile.mingw
+++ b/src/win/Makefile.mingw
@@ -583,7 +583,7 @@ CPUOBJ		:= cpu.o cpu_table.o \
 CHIPSETOBJ	:= acc2168.o cs8230.o ali1429.o headland.o i82335.o \
 		    intel_420ex.o intel_4x0.o intel_sio.o intel_piix.o ioapic.o \
 		    neat.o opti495.o opti895.o opti5x7.o scamp.o scat.o \
-		    sis_85c310.o sis_85c471.o sis_85c496.o $(STPCOBJ) \
+		    sis_85c310.o sis_85c471.o sis_85c496.o opti283.o opti291.o $(STPCOBJ) \
 		    via_apollo.o via_vpx.o via_vt82c586b.o via_vt82c596b.o wd76c10.o vl82c480.o \
 			amd640.o