diff --git a/mmixlib/customizegdb.vcproj b/mmixlib/customizegdb.vcproj
new file mode 100644
index 0000000000000000000000000000000000000000..166cbe196fbc3fe533adeeebe9349198b3b5a379
--- /dev/null
+++ b/mmixlib/customizegdb.vcproj
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diff --git a/mmixlib/libconfig.gdb b/mmixlib/libconfig.gdb
new file mode 100644
index 0000000000000000000000000000000000000000..dccb1a589acd839e316b6230b1d0168429ad2e22
--- /dev/null
+++ b/mmixlib/libconfig.gdb
@@ -0,0 +1,100 @@
+#ifndef LIBCONFIG_H
+#define LIBCONFIG_H
+
+/* This this the libconfig.h file for MMIXGDB rename to libconfig.h */
+
+#ifdef WIN32
+#pragma warning(disable : 4996)
+#endif
+
+/* define this if you need a local copy of mem_tetra ll */
+#define MMIX_LOCAL_LL /* mem_tetra *ll; current place in the simulated memory */
+
+#define MMIX_STO(val,addr) store_data(8,val,addr)
+#define MMIX_STT(val,addr) store_data(4,val,addr)
+#define MMIX_STW(val,addr) store_data(2,val,addr)
+#define MMIX_STB(val,addr) store_data(1,val,addr)
+
+#define MMIX_LDO(val,addr) load_data(8,&(val),addr,0)
+#define MMIX_LDT(val,addr) load_data(4,&(val),addr,0)
+#define MMIX_LDW(val,addr) load_data(2,&(val),addr,0)
+#define MMIX_LDB(val,addr) load_data(1,&(val),addr,0)
+
+#define MMIX_STO_UNCACHED(val,addr) store_data_uncached(8,val,addr)
+#define MMIX_LDO_UNCACHED(val,addr) load_data_uncached(8,&(val),addr,0)
+
+
+#define MMIX_FETCH(inst,loc) load_instruction(&inst,loc)
+#define MMIX_STORE_IVTC(virt,phys) store_exec_translation(&(virt),&(phys))
+#define MMIX_STORE_DVTC(virt,phys) store_data_translation(&(virt),&(phys))
+
+#ifdef WIN32
+#define MMIX_DELAY(ms,d) ((d) = wait_time(ms))
+#else
+#define MMIX_DELAY(ms,d) (usleep(1000*(ms)), d=(ms))
+#endif
+
+/* define this to check for external asynchronous interrupts*/
+#define MMIX_GET_INTERRUPT get_interrupt(&new_Q)
+
+/* this code is executed when MMIX enters the handler for Ctrl-C */
+#define MMIX_CTRL_HANDLER (cancel_wait(), show_operating_system=true)
+
+/* this code defines additional command line options */
+#define MMIX_OPTIONS \
+ case 'B': \
+ { char *p; \
+ p = strchr(arg+1,':'); \
+ if (p==NULL) \
+ { host=localhost; \
+ port = atoi(arg+1); \
+ } \
+ else \
+ { port = atoi(p+1); \
+ host = malloc(p+1-arg+1); \
+ if (host==NULL) panic("No room for hostname"); \
+ strncpy(host,arg+1,p-arg-1); \
+ host[p-arg-1]=0; \
+ } \
+ } \
+ return; \
+
+
+/* if MMIX_BOOT is defined, mmix-sim will boot from addres #8000...0000
+ otherwise it will resume at Main */
+#define MMIX_BOOT
+
+/* if MMIX_PRINT is defined the mmixoutput is redirected from stdin or stderr */
+#undef MMIX_PRINT
+
+/* this action is executed when there is no mmo file on the command line */
+#define MMIX_NO_FILE
+
+/* define this to get the real TRAP implementation not the MMIXWARE fake TRAPS */
+#define MMIX_TRAP
+
+/* this is the error display function */
+#define MMIX_ERROR(f,m) fprintf(stderr,f,m)
+
+/* define this if you need the tetra inside the mem_node */
+#undef MMIX_MEM_TET /* tetra tet; the tetrabyte of simulated memory */
+
+/* these are the functions for the instructions not implemented in the basic mmix simulator */
+#define MMIX_WRITE_DCACHE() write_all_data_cache()
+#define MMIX_CLEAR_ICACHE() clear_all_instruction_cache()
+#define MMIX_CLEAR_DCACHE() clear_all_data_cache()
+#define MMIX_UPDATE_VTC(w) update_vtc(w)
+#define MMIX_CLEAR_DVTC() clear_all_data_vtc()
+#define MMIX_CLEAR_IVTC() clear_all_instruction_vtc()
+#define MMIX_PRELOAD_DCACHE(w,xx) preload_data_cache(w,xx)
+#define MMIX_PRELOAD_ICACHE(w,xx) prego_instruction(w,xx)
+#define MMIX_STORE_DCACHE(w,xx) write_data(w,xx)
+#define MMIX_DELETE_DCACHE(w,xx) delete_data(w,xx)
+#define MMIX_DELETE_ICACHE(w,xx) delete_instruction(w,xx)
+
+#define MMXIAL_LINE_TRUNCATED fprintf(stderr,"(say `-b ' to increase the length of my input buffer)\n");
+
+/* define this to record file line and location associations while assembling */
+#define MMIXAL_LINE_LOC(file_no,line_no,cur_loc)
+
+#endif
diff --git a/mmixlib/libimport.gdb b/mmixlib/libimport.gdb
new file mode 100644
index 0000000000000000000000000000000000000000..c9e69d3f283e24b0ff1401f56aa82b13edfcfa8f
--- /dev/null
+++ b/mmixlib/libimport.gdb
@@ -0,0 +1,4 @@
+/* This this the libimport.h file for MMIXGDB rename to libimport.h */
+
+#include "../../vmbmmixlib/address.h"
+#include "../../vmbmmixlib/mmix-bus.h"