diff --git a/kernel/globals.h b/kernel/globals.h
index bc4eaf3..9c877cd 100644
--- a/kernel/globals.h
+++ b/kernel/globals.h
@@ -160,14 +160,7 @@ extern struct dhdr FAR ASM clk_dev; /* Clock device driver                  */
 extern struct dhdr FAR ASM con_dev; /* Console device driver                */
 extern struct dhdr FAR ASM prn_dev; /* Generic printer device driver        */
 extern struct dhdr FAR ASM aux_dev; /* Generic aux device driver            */
-#ifndef __GNUC__
 extern struct dhdr FAR ASM blk_dev; /* Block device (Disk) driver           */
-#else
-extern struct dhdr ASM blk_dev;
-#define DosTextSeg 0x70
-#define DOSTEXT(x) (*(typeof(x) FAR *)MK_FP(DosTextSeg, (size_t)&(x)))
-#define blk_dev DOSTEXT(blk_dev)
-#endif
 extern COUNT *error_tos,        /* error stack                          */
   disk_api_tos,                 /* API handler stack - disk fns         */
   char_api_tos;                 /* API handler stack - char fns         */
diff --git a/kernel/init-dat.h b/kernel/init-dat.h
index 7d91716..126dc46 100644
--- a/kernel/init-dat.h
+++ b/kernel/init-dat.h
@@ -1,7 +1,5 @@
 #undef DOSFAR
 #undef DOSTEXTFAR
-#define DOSDATA(x) (x)
-#define DOSTEXT(x) (x)
 
 /* Included by initialisation functions */
 
@@ -27,13 +25,8 @@ extern __segment DosTextSeg;
 
 #elif defined(__GNUC__)
 
-#define DosTextSeg 0x70
 #define DOSFAR FAR
 #define DOSTEXTFAR FAR
-#undef DOSDATA
-#undef DOSTEXT
-#define DOSDATA(x) (*(typeof(x) FAR *)MK_FP(DosDataSeg, (size_t)&(x)))
-#define DOSTEXT(x) (*(typeof(x) FAR *)MK_FP(DosTextSeg, (size_t)&(x)))
 
 #elif !defined(I86)
 
diff --git a/kernel/init-mod.h b/kernel/init-mod.h
index 16739b9..2b9868d 100644
--- a/kernel/init-mod.h
+++ b/kernel/init-mod.h
@@ -218,9 +218,6 @@ VOID ASMCFUNC FAR int2a_handler(void);
 VOID ASMCFUNC FAR int2f_handler(void);
 VOID ASMCFUNC FAR cpm_entry(void);
 
-#define cpm_entry DOSDATA(cpm_entry)
-#define int29_handler DOSTEXT(int29_handler)
-
 /* kernel.asm */
 #ifdef __GNUC__
 VOID ASMCFUNC init_call_p_0(struct config FAR *Config) FAR __attribute__((noreturn));
@@ -240,7 +237,6 @@ int VA_CDECL init_sprintf(char * buff, CONST char * fmt, ...);
 
 /* procsupt.asm */
 VOID ASMCFUNC FAR got_cbreak(void);
-#define got_cbreak DOSTEXT(got_cbreak)
 
 /* initclk.c */
 extern void Init_clk_driver(void);
@@ -248,12 +244,7 @@ extern void Init_clk_driver(void);
 extern UWORD HMAFree;            /* first byte in HMA not yet used      */
 
 extern unsigned CurrentKernelSegment;
-#ifdef __GNUC__
-extern struct _KernelConfig ASM LowKernelConfig;
-#define LowKernelConfig *(typeof(LowKernelConfig) FAR *)MK_FP(DOS_PSP, &LowKernelConfig)
-#else
 extern struct _KernelConfig FAR ASM LowKernelConfig;
-#endif
 extern WORD days[2][13];
 extern BYTE FAR *lpTop;
 extern BYTE ASM _ib_start[], ASM _ib_end[], ASM _init_end[];
diff --git a/kernel/inithma.c b/kernel/inithma.c
index fe15a58..7838a3b 100644
--- a/kernel/inithma.c
+++ b/kernel/inithma.c
@@ -312,14 +312,7 @@ void MoveKernel(unsigned NewKernelSegment)
   unsigned jmpseg = CurrentKernelSegment;
  
   if (CurrentKernelSegment == 0)
-#ifdef __GNUC__
-    {
-      extern char TGROUP[] asm("TGROUP");
-      CurrentKernelSegment = (unsigned)TGROUP;
-    }
-#else
     CurrentKernelSegment = FP_SEG(_HMATextEnd);
-#endif
 
   if (CurrentKernelSegment == 0xffff)
     return;
diff --git a/kernel/main.c b/kernel/main.c
index 1d2ec22..32cbc9d 100644
--- a/kernel/main.c
+++ b/kernel/main.c
@@ -263,10 +263,10 @@ STATIC void setup_int_vectors(void)
   for (plvec = intvec_table; plvec < intvec_table + 5; plvec++)
     plvec->isv = getvec(plvec->intno);
   for (i = 0x23; i <= 0x3f; i++)
-    setvec(i, DOSDATA(empty_handler));
+    setvec(i, empty_handler);
   HaltCpuWhileIdle = 0;
   for (pvec = vectors; pvec < vectors + (sizeof vectors/sizeof *pvec); pvec++)
-    setvec(pvec->intno, (intvec)MK_FP(FP_SEG(DOSDATA(empty_handler)), pvec->handleroff));
+    setvec(pvec->intno, (intvec)MK_FP(FP_SEG(empty_handler), pvec->handleroff));
   pokeb(0, 0x30 * 4, 0xea);
   pokel(0, 0x30 * 4 + 1, (ULONG)cpm_entry);