diff --git a/scp.c b/scp.c
index 6036040cb..80a911a85 100644
--- a/scp.c
+++ b/scp.c
@@ -2878,10 +2878,6 @@ t_bool device_unit_tests = FALSE;
 t_stat stat = SCPE_OK;
 CTAB *docmdp = NULL;
 
-#if defined (__MWERKS__) && defined (macintosh)
-argc = ccommand (&argv);
-#endif
-
 /* Make sure that argv has at least 10 elements and that it ends in a NULL pointer */
 targv = (char **)calloc (1+MAX(10, argc), sizeof(*targv));
 for (i=0; i<argc; i++)
diff --git a/sim_console.c b/sim_console.c
index 28876d9c0..60ffacc0d 100644
--- a/sim_console.c
+++ b/sim_console.c
@@ -181,7 +181,7 @@ int32 sim_dbg_int_char = 0;                             /* SIGINT char under deb
 static t_bool sigint_message_issued = FALSE;
 int32 sim_brk_char = 000;                               /* break character */
 int32 sim_tt_pchar = 0x00002780;
-#if defined (_WIN32) || defined (__OS2__) || (defined (__MWERKS__) && defined (macintosh))
+#if defined (_WIN32)
 int32 sim_del_char = '\b';                              /* delete character */
 #else
 int32 sim_del_char = 0177;
@@ -3690,288 +3690,6 @@ if (program[0] != '\0') {
 return sim_messagef (SCPE_NOFNC, "Can't find a telnet program to connect to the console in a window\n");
 }
 
-/* OS/2 routines, from Bruce Ray and Holger Veit */
-
-#elif defined (__OS2__)
-
-#include <conio.h>
-
-static t_stat sim_os_ttinit (void)
-{
-return SCPE_OK;
-}
-
-static t_stat sim_os_ttrun (void)
-{
-return SCPE_OK;
-}
-
-static t_stat sim_os_ttcmd (void)
-{
-return SCPE_OK;
-}
-
-static t_stat sim_os_ttclose (void)
-{
-return SCPE_OK;
-}
-
-static t_bool sim_os_fd_isatty (int fd)
-{
-return 1;
-}
-
-static t_stat sim_os_poll_kbd (void)
-{
-int c;
-
-sim_debug (DBG_TRC, &sim_con_telnet, "sim_os_poll_kbd()\n");
-
-#if defined (__EMX__)
-switch (c = _read_kbd(0,0,0)) {                         /* EMX has _read_kbd */
-
-    case -1:                                            /* no char*/
-        return SCPE_OK;
-
-    case 0:                                             /* char pending */
-        c = _read_kbd(0,1,0);
-        break;
-
-    default:                                            /* got char */
-        break;
-        }
-#else
-if (!kbhit ())
-    return SCPE_OK;
-c = getch();
-#endif
-if ((c & 0177) == sim_del_char)
-    c = 0177;
-if ((c & 0177) == sim_int_char)
-    return SCPE_STOP;
-if (sim_brk_char && ((c & 0177) == sim_brk_char))
-    return SCPE_BREAK;
-return c | SCPE_KFLAG;
-}
-
-static t_bool sim_os_poll_kbd_ready (int ms_timeout)   /* Don't know how to do this on this platform */
-{
-sim_os_ms_sleep (MIN(20,ms_timeout));           /* Wait a little */
-return TRUE;                                    /* force a poll */
-}
-
-static t_stat sim_os_putchar (int32 c)
-{
-if (c != 0177) {
-#if defined (__EMX__)
-    putchar (c);
-#else
-    putch (c);
-#endif
-    fflush (stdout);
-    }
-return SCPE_OK;
-}
-
-/* Metrowerks CodeWarrior Macintosh routines, from Louis Chretien and
-   Peter Schorn */
-
-#elif defined (__MWERKS__) && defined (macintosh)
-
-#include <console.h>
-#include <Mactypes.h>
-#include <string.h>
-#include <sioux.h>
-#include <unistd.h>
-#include <siouxglobals.h>
-#include <Traps.h>
-#include <LowMem.h>
-
-/* function prototypes */
-
-Boolean SIOUXIsAppWindow(WindowPtr window);
-void SIOUXDoMenuChoice(long menuValue);
-void SIOUXUpdateMenuItems(void);
-void SIOUXUpdateScrollbar(void);
-int ps_kbhit(void);
-int ps_getch(void);
-
-extern pSIOUXWin SIOUXTextWindow;
-static CursHandle iBeamCursorH = NULL;                  /* contains the iBeamCursor */
-
-static void updateCursor(void) {
-    WindowPtr window;
-    window = FrontWindow();
-    if (SIOUXIsAppWindow(window)) {
-        GrafPtr savePort;
-        Point localMouse;
-        GetPort(&savePort);
-        SetPort(window);
-#if TARGET_API_MAC_CARBON
-        GetGlobalMouse(&localMouse);
-#else
-        localMouse = LMGetMouseLocation();
-#endif
-        GlobalToLocal(&localMouse);
-        if (PtInRect(localMouse, &(*SIOUXTextWindow->edit)->viewRect) && iBeamCursorH) {
-            SetCursor(*iBeamCursorH);
-        }
-        else {
-            SetCursor(&qd.arrow);
-        }
-        TEIdle(SIOUXTextWindow->edit);
-        SetPort(savePort);
-    }
-    else {
-        SetCursor(&qd.arrow);
-        TEIdle(SIOUXTextWindow->edit);
-    }
-    return;
-}
-
-int ps_kbhit(void) {
-    EventRecord event;
-    int c;
-    updateCursor();
-    SIOUXUpdateScrollbar();
-    while (GetNextEvent(updateMask | osMask | mDownMask | mUpMask | activMask |
-             highLevelEventMask | diskEvt, &event)) {
-        SIOUXHandleOneEvent(&event);
-    }
-    if (SIOUXQuitting) {
-        exit(1);
-    }
-    if (EventAvail(keyDownMask,&event)) {
-        c = event.message&charCodeMask;
-        if ((event.modifiers & cmdKey) && (c > 0x20)) {
-            GetNextEvent(keyDownMask, &event);
-            SIOUXHandleOneEvent(&event);
-            if (SIOUXQuitting) {
-                exit(1);
-            }
-            return false;
-        }
-        return true;
-    }
-    else {
-        return false;
-    }
-}
-
-int ps_getch(void) {
-    int c;
-    EventRecord event;
-    fflush(stdout);
-    updateCursor();
-    while(!GetNextEvent(keyDownMask,&event)) {
-        if (GetNextEvent(updateMask | osMask | mDownMask | mUpMask | activMask |
-             highLevelEventMask | diskEvt, &event)) {
-            SIOUXUpdateScrollbar();
-            SIOUXHandleOneEvent(&event);
-        }
-    }
-    if (SIOUXQuitting) {
-        exit(1);
-    }
-    c = event.message&charCodeMask;
-    if ((event.modifiers & cmdKey) && (c > 0x20)) {
-        SIOUXUpdateMenuItems();
-        SIOUXDoMenuChoice(MenuKey(c));
-    }
-    if (SIOUXQuitting) {
-        exit(1);
-    }
-   return c;
-}
-
-/* Note that this only works if the call to sim_ttinit comes before any output to the console */
-
-static t_stat sim_os_ttinit (void) 
-{
-    int i;
-
-    sim_debug (DBG_TRC, &sim_con_telnet, "sim_os_ttinit()\n");
-
-    /* this blank will later be replaced by the number of characters */
-    char title[50] = " ";
-    unsigned char ptitle[50];
-    SIOUXSettings.autocloseonquit       = TRUE;
-    SIOUXSettings.asktosaveonclose = FALSE;
-    SIOUXSettings.showstatusline = FALSE;
-    SIOUXSettings.columns = 80;
-    SIOUXSettings.rows = 40;
-    SIOUXSettings.toppixel = 42;
-    SIOUXSettings.leftpixel     = 6;
-    iBeamCursorH = GetCursor(iBeamCursor);
-    strlcat(title, sim_name, sizeof(title));
-    strlcat(title, " Simulator", sizeof(title));
-    title[0] = strlen(title) - 1;                       /* Pascal string done */
-    for (i = 0; i <= title[0]; i++) {                   /* copy to unsigned char */
-        ptitle[i] = title[i];
-        }
-    SIOUXSetTitle(ptitle);
-    return SCPE_OK;
-}
-
-static t_stat sim_os_ttrun (void)
-{
-return SCPE_OK;
-}
-
-static t_stat sim_os_ttcmd (void)
-{
-return SCPE_OK;
-}
-
-static t_stat sim_os_ttclose (void)
-{
-return SCPE_OK;
-}
-
-static t_bool sim_os_fd_isatty (int fd)
-{
-return 1;
-}
-
-static t_stat sim_os_poll_kbd (void)
-{
-int c;
-
-sim_debug (DBG_TRC, &sim_con_telnet, "sim_os_poll_kbd()\n");
-
-if (!ps_kbhit ())
-    return SCPE_OK;
-c = ps_getch();
-if ((c & 0177) == sim_del_char)
-    c = 0177;
-if ((c & 0177) == sim_int_char)
-    return SCPE_STOP;
-if (sim_brk_char && ((c & 0177) == sim_brk_char))
-    return SCPE_BREAK;
-return c | SCPE_KFLAG;
-}
-
-static t_bool sim_os_poll_kbd_ready (int ms_timeout)   /* Don't know how to do this on this platform */
-{
-sim_os_ms_sleep (MIN(20,ms_timeout));           /* Wait a little */
-return TRUE;                                    /* force a poll */
-}
-
-static t_stat sim_os_putchar (int32 c)
-{
-if (c != 0177) {
-    putchar (c);
-    fflush (stdout);
-    }
-return SCPE_OK;
-}
-
-static t_stat sim_os_connect_telnet (int port)
-{
-return SCPE_NOFNC;
-}
-
-
 /* BSD UNIX routines */
 
 #elif defined (BSDTTY)
diff --git a/sim_sock.c b/sim_sock.c
index 908c4ef6a..a8f2b0070 100644
--- a/sim_sock.c
+++ b/sim_sock.c
@@ -83,49 +83,6 @@ extern "C" {
    sim_setnonblock      set socket non-blocking
 */
 
-/* First, all the non-implemented versions */
-
-#if defined (__OS2__) && !defined (__EMX__)
-
-void sim_init_sock (void)
-{
-}
-
-void sim_cleanup_sock (void)
-{
-}
-
-SOCKET sim_master_sock_ex (const char *hostport, int *parse_status, int opt_flags)
-{
-return INVALID_SOCKET;
-}
-
-SOCKET sim_connect_sock_ex (const char *sourcehostport, const char *hostport, const char *default_host, const char *default_port, int opt_flags)
-{
-return INVALID_SOCKET;
-}
-
-SOCKET sim_accept_conn (SOCKET master, char **connectaddr);
-{
-return INVALID_SOCKET;
-}
-
-int sim_read_sock (SOCKET sock, char *buf, int nbytes)
-{
-return -1;
-}
-
-int sim_write_sock (SOCKET sock, char *msg, int nbytes)
-{
-return 0;
-}
-
-void sim_close_sock (SOCKET sock)
-{
-return;
-}
-
-#else                                                   /* endif unimpl */
 
 /* UNIX, Win32, Macintosh, VMS, OS2 (Berkeley socket) routines */
 
@@ -1416,8 +1373,6 @@ shutdown(sock, SD_BOTH);
 closesocket (sock);
 }
 
-#endif                                                  /* end else !implemented */
-
 #ifdef  __cplusplus
 }
 #endif
diff --git a/sim_sock.h b/sim_sock.h
index af56c1b8b..f88d68634 100644
--- a/sim_sock.h
+++ b/sim_sock.h
@@ -71,7 +71,7 @@ extern "C" {
 #pragma pop_macro ("PURE")
 #pragma pop_macro ("INT_PTR")
 
-#elif !defined (__OS2__) || defined (__EMX__)           /* VMS, Mac, Unix, OS/2 EMX */
+#else                                                   /* VMS, Mac, Unix */
 #include <sys/types.h>                                  /* for fcntl, getpid */
 #include <sys/socket.h>                                 /* for sockets */
 #include <string.h>
diff --git a/sim_timer.c b/sim_timer.c
index 1e6a00026..991bf55be 100644
--- a/sim_timer.c
+++ b/sim_timer.c
@@ -552,92 +552,6 @@ return 0;
 }
 #endif
 
-#elif defined (__OS2__)
-
-/* OS/2 routines, from Bruce Ray */
-
-const t_bool rtc_avail = FALSE;
-
-static uint32 _sim_os_msec (void)
-{
-return 0;
-}
-
-void sim_os_sleep (unsigned int sec)
-{
-}
-
-uint32 sim_os_ms_sleep_init (void)
-{
-return 0;
-}
-
-uint32 sim_os_ms_sleep (unsigned int msec)
-{
-return 0;
-}
-
-/* Metrowerks CodeWarrior Macintosh routines, from Ben Supnik */
-
-#elif defined (__MWERKS__) && defined (macintosh)
-
-#include <Timer.h>
-#include <Mactypes.h>
-#include <sioux.h>
-#include <unistd.h>
-#include <siouxglobals.h>
-#define NANOS_PER_MILLI     1000000
-#define MILLIS_PER_SEC      1000
-
-const t_bool rtc_avail = TRUE;
-
-static uint32 _sim_os_msec (void)
-{
-unsigned long long micros;
-UnsignedWide macMicros;
-unsigned long millis;
-
-Microseconds (&macMicros);
-micros = *((unsigned long long *) &macMicros);
-millis = micros / 1000LL;
-return (uint32) millis;
-}
-
-void sim_os_sleep (unsigned int sec)
-{
-sleep (sec);
-}
-
-uint32 sim_os_ms_sleep_init (void)
-{
-return _compute_minimum_sleep ();
-}
-
-uint32 sim_os_ms_sleep (unsigned int milliseconds)
-{
-uint32 stime = sim_os_msec ();
-struct timespec treq;
-
-treq.tv_sec = milliseconds / MILLIS_PER_SEC;
-treq.tv_nsec = (milliseconds % MILLIS_PER_SEC) * NANOS_PER_MILLI;
-(void) nanosleep (&treq, NULL);
-return sim_os_msec () - stime;
-}
-
-#if defined(NEED_CLOCK_GETTIME)
-int clock_gettime(int clk_id, struct timespec *tp)
-{
-struct timeval cur;
-
-if (clk_id != CLOCK_REALTIME)
-  return -1;
-gettimeofday (&cur, NULL);
-tp->tv_sec = cur.tv_sec;
-tp->tv_nsec = cur.tv_usec*1000;
-return 0;
-}
-#endif
-
 #else
 
 /* UNIX routines */