diff --git a/src/codegen_new/codegen_allocator.c b/src/codegen_new/codegen_allocator.c
index 157c3cc0b..c3fca66b7 100644
--- a/src/codegen_new/codegen_allocator.c
+++ b/src/codegen_new/codegen_allocator.c
@@ -192,11 +192,7 @@ codegen_allocator_clean_blocks(UNUSED(struct mem_block_t *block))
 {
 #if defined __ARM_EABI__ || defined __aarch64__ || defined _M_ARM64
     while (1) {
-#    ifndef _MSC_VER
         __clear_cache(&mem_block_alloc[block->offset], &mem_block_alloc[block->offset + MEM_BLOCK_SIZE]);
-#    else
-        FlushInstructionCache(GetCurrentProcess(), &mem_block_alloc[block->offset], MEM_BLOCK_SIZE);
-#    endif
         if (block->next)
             block = &mem_blocks[block->next - 1];
         else
diff --git a/src/cpu/cpu.h b/src/cpu/cpu.h
index 25564082b..865e76ffb 100644
--- a/src/cpu/cpu.h
+++ b/src/cpu/cpu.h
@@ -446,16 +446,14 @@ typedef struct {
 #    define CPU_STATUS_MASK      0xffff0000
 #endif
 
-#ifdef _MSC_VER
-#    define COMPILE_TIME_ASSERT(expr) /*nada*/
+
+#ifdef EXTREME_DEBUG
+#   define COMPILE_TIME_ASSERT(expr) typedef char COMP_TIME_ASSERT[(expr) ? 1 : 0];
 #else
-#    ifdef EXTREME_DEBUG
-#        define COMPILE_TIME_ASSERT(expr) typedef char COMP_TIME_ASSERT[(expr) ? 1 : 0];
-#    else
-#        define COMPILE_TIME_ASSERT(expr) /*nada*/
-#    endif
+#   define COMPILE_TIME_ASSERT(expr) /*nada*/
 #endif
 
+
 COMPILE_TIME_ASSERT(sizeof(cpu_state_t) <= 128)
 
 #define cpu_state_offset(MEMBER) ((uint8_t) ((uintptr_t) &cpu_state.MEMBER - (uintptr_t) &cpu_state - 128))
diff --git a/src/cpu/x87_ops.h b/src/cpu/x87_ops.h
index e581652d4..4d099885a 100644
--- a/src/cpu/x87_ops.h
+++ b/src/cpu/x87_ops.h
@@ -33,9 +33,6 @@
 #endif
 
 #include "x87_timings.h"
-#ifdef _MSC_VER
-#    include <intrin.h>
-#endif
 #include "x87_ops_conv.h"
 
 #ifdef ENABLE_FPU_LOG
@@ -390,8 +387,7 @@ x87_compare(double a, double b)
     if ((fpu_type < FPU_287XL) && !(cpu_state.npxc & 0x1000) && ((a == INFINITY) || (a == -INFINITY)) && ((b == INFINITY) || (b == -INFINITY)))
         eb = ea;
 
-#    if !defined(_MSC_VER) || defined(__clang__)
-    /* Memory barrier, to force GCC to write to the input parameters
+        /* Memory barrier, to force GCC to write to the input parameters
      * before the compare rather than after */
     __asm volatile(""
                    :
@@ -406,17 +402,7 @@ x87_compare(double a, double b)
         "fnstsw %0\n"
         : "=m"(result)
         : "m"(ea), "m"(eb));
-#    else
-    _ReadWriteBarrier();
-    _asm
-    {
-                fld eb
-                fld ea
-                fclex
-                fcompp
-                fnstsw result
-    }
-#    endif
+
 
     return result & (FPU_SW_C0 | FPU_SW_C2 | FPU_SW_C3);
 #else
@@ -451,7 +437,6 @@ x87_ucompare(double a, double b)
 #ifdef X87_INLINE_ASM
     uint32_t result;
 
-#    if !defined(_MSC_VER) || defined(__clang__)
     /* Memory barrier, to force GCC to write to the input parameters
      * before the compare rather than after */
     __asm volatile(""
@@ -467,17 +452,6 @@ x87_ucompare(double a, double b)
         "fnstsw %0\n"
         : "=m"(result)
         : "m"(a), "m"(b));
-#    else
-    _ReadWriteBarrier();
-    _asm
-    {
-                fld b
-                fld a
-                fclex
-                fcompp
-                fnstsw result
-    }
-#    endif
 
     return result & (FPU_SW_C0 | FPU_SW_C2 | FPU_SW_C3);
 #else
diff --git a/src/floppy/fdd_pcjs.c b/src/floppy/fdd_pcjs.c
index 2193048c6..b1494cd38 100644
--- a/src/floppy/fdd_pcjs.c
+++ b/src/floppy/fdd_pcjs.c
@@ -18,11 +18,7 @@
 #include <string.h>
 #include <stdlib.h>
 #include <wchar.h>
-#ifndef _MSC_VER
 #include <unistd.h>
-#else
-#include <io.h>
-#endif
 #define HAVE_STDARG_H
 #include <86box/86box.h>
 #include <86box/timer.h>
diff --git a/src/include/86box/plat.h b/src/include/86box/plat.h
index 7b2f0c12f..2d28ec9bc 100644
--- a/src/include/86box/plat.h
+++ b/src/include/86box/plat.h
@@ -69,19 +69,10 @@ extern int strnicmp(const char *s1, const char *s2, size_t n);
 #    define fseeko64 fseeko
 #    define ftello64 ftello
 #    define off64_t  off_t
-#elif defined(_MSC_VER)
-// # define fopen64  fopen
-#    define fseeko64 _fseeki64
-#    define ftello64 _ftelli64
-#    define off64_t  off_t
 #endif
 
-#ifdef _MSC_VER
-#    define UNUSED(arg) arg
-#else
 /* A hack (GCC-specific?) to allow us to ignore unused parameters. */
 #    define UNUSED(arg) __attribute__((unused)) arg
-#endif
 
 /* Return the size (in wchar's) of a wchar_t array. */
 #define sizeof_w(x) (sizeof((x)) / sizeof(wchar_t))
@@ -97,17 +88,14 @@ extern "C" {
 #    define atomic_flag_t atomic_flag
 #    define atomic_bool_t atomic_bool
 
-#ifdef _MSC_VER
-# define fallthrough do {} while (0) /* fallthrough */
+
+#if __has_attribute(fallthrough)
+# define fallthrough __attribute__((fallthrough))
 #else
-# if __has_attribute(fallthrough)
-#  define fallthrough __attribute__((fallthrough))
-# else
-#  if __has_attribute(__fallthrough__)
-#   define fallthrough __attribute__((__fallthrough__))
-#  endif
-#  define fallthrough do {} while (0) /* fallthrough */
+# if __has_attribute(__fallthrough__)
+#  define fallthrough __attribute__((__fallthrough__))
 # endif
+# define fallthrough do {} while (0) /* fallthrough */
 #endif
 
 #endif
diff --git a/src/include/86box/plat_fallthrough.h b/src/include/86box/plat_fallthrough.h
index 2ba000848..1221f03fa 100644
--- a/src/include/86box/plat_fallthrough.h
+++ b/src/include/86box/plat_fallthrough.h
@@ -16,18 +16,16 @@
 #define EMU_PLAT_FALLTHROUGH_H
 
 #ifndef EMU_PLAT_H
-#ifdef _MSC_VER
-# define fallthrough do {} while (0) /* fallthrough */
+
+#if __has_attribute(fallthrough)
+# define fallthrough __attribute__((fallthrough))
 #else
-# if __has_attribute(fallthrough)
-#  define fallthrough __attribute__((fallthrough))
-# else
-#  if __has_attribute(__fallthrough__)
-#   define fallthrough __attribute__((__fallthrough__))
-#  endif
-#  define fallthrough do {} while (0) /* fallthrough */
+# if __has_attribute(__fallthrough__)
+#  define fallthrough __attribute__((__fallthrough__))
 # endif
+# define fallthrough do {} while (0) /* fallthrough */
 #endif
+
 #endif
 
 #endif /*EMU_PLAT_FALLTHROUGH_H*/
diff --git a/src/include/86box/plat_unused.h b/src/include/86box/plat_unused.h
index 4688a615b..4090f3358 100644
--- a/src/include/86box/plat_unused.h
+++ b/src/include/86box/plat_unused.h
@@ -19,12 +19,9 @@
 #define EMU_PLAT_UNUSED_H
 
 #ifndef EMU_PLAT_H
-#ifdef _MSC_VER
-#    define UNUSED(arg) arg
-#else
 /* A hack (GCC-specific?) to allow us to ignore unused parameters. */
+
 #    define UNUSED(arg) __attribute__((unused)) arg
-#endif
-#endif
+#endif 
 
 #endif /*EMU_PLAT_UNUSED_H*/
diff --git a/src/include/86box/vid_voodoo_codegen_x86-64.h b/src/include/86box/vid_voodoo_codegen_x86-64.h
index 8b1413ad4..0e43c15bd 100644
--- a/src/include/86box/vid_voodoo_codegen_x86-64.h
+++ b/src/include/86box/vid_voodoo_codegen_x86-64.h
@@ -8,11 +8,7 @@
 #ifndef VIDEO_VOODOO_CODEGEN_X86_64_H
 #define VIDEO_VOODOO_CODEGEN_X86_64_H
 
-#ifdef _MSC_VER
-#    include <intrin.h>
-#else
-#    include <xmmintrin.h>
-#endif
+#include <xmmintrin.h>
 
 #define BLOCK_NUM  8
 #define BLOCK_MASK (BLOCK_NUM - 1)
diff --git a/src/include/86box/vid_voodoo_codegen_x86.h b/src/include/86box/vid_voodoo_codegen_x86.h
index 996bd28f1..f479a5413 100644
--- a/src/include/86box/vid_voodoo_codegen_x86.h
+++ b/src/include/86box/vid_voodoo_codegen_x86.h
@@ -8,11 +8,7 @@
 #ifndef VIDEO_VOODOO_CODEGEN_X86_H
 #define VIDEO_VOODOO_CODEGEN_X86_H
 
-#ifdef _MSC_VER
-#    include <intrin.h>
-#else
-#    include <xmmintrin.h>
-#endif
+#include <xmmintrin.h>
 
 #define BLOCK_NUM  8
 #define BLOCK_MASK (BLOCK_NUM - 1)
diff --git a/src/network/network.c b/src/network/network.c
index 3f854f356..8680d6c64 100644
--- a/src/network/network.c
+++ b/src/network/network.c
@@ -52,9 +52,7 @@
 #include <stdlib.h>
 #include <wchar.h>
 #include <time.h>
-#ifndef _MSC_VER
 #include <sys/time.h>
-#endif
 #include <stdbool.h>
 #define HAVE_STDARG_H
 #include <86box/86box.h>
diff --git a/src/utils/random.c b/src/utils/random.c
index 6ed6c1d0c..5658bc3fb 100644
--- a/src/utils/random.c
+++ b/src/utils/random.c
@@ -51,16 +51,10 @@ rdtsc(void)
 #if defined(__x86_64__)
     unsigned int hi;
     unsigned int lo;
-#    ifdef _MSC_VER
-    __asm {
-        rdtsc
-        mov hi, edx ; EDX:EAX is already standard return!!
-        mov lo, eax
-    }
-#    else
+
     __asm__ __volatile__("rdtsc"
                          : "=a"(lo), "=d"(hi));
-#    endif
+                         
     return ((unsigned long long) lo) | (((unsigned long long) hi) << 32);
 #else
     return time(NULL);