diff --git a/src/cpu/x86_ops_mov_ctrl.h b/src/cpu/x86_ops_mov_ctrl.h
index b4f0c498a..253dc059e 100644
--- a/src/cpu/x86_ops_mov_ctrl.h
+++ b/src/cpu/x86_ops_mov_ctrl.h
@@ -184,7 +184,7 @@ opMOV_CRx_r_a16(uint32_t fetchdat)
     fetch_ea_16(fetchdat);
     switch (cpu_reg) {
         case 0:
-            if ((cpu_state.regs[cpu_rm].l ^ cr0) & (0x00000001 | WP_FLAG))
+            if ((cpu_state.regs[cpu_rm].l ^ cr0) & 0x00000001)
                 flushmmucache();
             else if ((cpu_state.regs[cpu_rm].l ^ cr0) & 0x80000000) {
                 if (is_p6 || cpu_use_dynarec)
@@ -193,7 +193,8 @@ opMOV_CRx_r_a16(uint32_t fetchdat)
                     flushmmucache_nopc();
                     cpu_flush_pending = 1;
                 }
-            }
+            } else if ((cpu_state.regs[cpu_rm].l ^ cr0) & WP_FLAG)
+                flushmmucache_write();
             /* Make sure CPL = 0 when switching from real mode to protected mode. */
             if ((cpu_state.regs[cpu_rm].l & 0x01) && !(cr0 & 0x01))
                 cpu_state.seg_cs.access &= 0x9f;
@@ -249,7 +250,7 @@ opMOV_CRx_r_a32(uint32_t fetchdat)
     fetch_ea_32(fetchdat);
     switch (cpu_reg) {
         case 0:
-            if ((cpu_state.regs[cpu_rm].l ^ cr0) & (0x00000001 | WP_FLAG))
+            if ((cpu_state.regs[cpu_rm].l ^ cr0) & 0x00000001)
                 flushmmucache();
             else if ((cpu_state.regs[cpu_rm].l ^ cr0) & 0x80000000) {
                 if (is_p6 || cpu_use_dynarec)
@@ -258,7 +259,8 @@ opMOV_CRx_r_a32(uint32_t fetchdat)
                     flushmmucache_nopc();
                     cpu_flush_pending = 1;
                 }
-            }
+            } else if ((cpu_state.regs[cpu_rm].l ^ cr0) & WP_FLAG)
+                flushmmucache_write();
             /* Make sure CPL = 0 when switching from real mode to protected mode. */
             if ((cpu_state.regs[cpu_rm].l & 0x01) && !(cr0 & 0x01))
                 cpu_state.seg_cs.access &= 0x9f;
diff --git a/src/cpu/x86_ops_mov_ctrl_2386.h b/src/cpu/x86_ops_mov_ctrl_2386.h
index 13e08a145..8827d29b2 100644
--- a/src/cpu/x86_ops_mov_ctrl_2386.h
+++ b/src/cpu/x86_ops_mov_ctrl_2386.h
@@ -180,12 +180,13 @@ opMOV_CRx_r_a16(uint32_t fetchdat)
     fetch_ea_16(fetchdat);
     switch (cpu_reg) {
         case 0:
-            if ((cpu_state.regs[cpu_rm].l ^ cr0) & (0x00000001 | WP_FLAG))
+            if ((cpu_state.regs[cpu_rm].l ^ cr0) & 0x00000001)
                 flushmmucache();
             else if ((cpu_state.regs[cpu_rm].l ^ cr0) & 0x80000000) {
                 flushmmucache_nopc();
                 cpu_flush_pending = 1;
-            }
+            } else if ((cpu_state.regs[cpu_rm].l ^ cr0) & WP_FLAG)
+                flushmmucache_write();
             /* Make sure CPL = 0 when switching from real mode to protected mode. */
             if ((cpu_state.regs[cpu_rm].l & 0x01) && !(cr0 & 0x01))
                 cpu_state.seg_cs.access &= 0x9f;
@@ -241,12 +242,13 @@ opMOV_CRx_r_a32(uint32_t fetchdat)
     fetch_ea_32(fetchdat);
     switch (cpu_reg) {
         case 0:
-            if ((cpu_state.regs[cpu_rm].l ^ cr0) & (0x00000001 | WP_FLAG))
+            if ((cpu_state.regs[cpu_rm].l ^ cr0) & 0x00000001)
                 flushmmucache();
             else if ((cpu_state.regs[cpu_rm].l ^ cr0) & 0x80000000) {
                 flushmmucache_nopc();
                 cpu_flush_pending = 1;
-            }
+            } else if ((cpu_state.regs[cpu_rm].l ^ cr0) & WP_FLAG)
+                flushmmucache_write();
             /* Make sure CPL = 0 when switching from real mode to protected mode. */
             if ((cpu_state.regs[cpu_rm].l & 0x01) && !(cr0 & 0x01))
                 cpu_state.seg_cs.access &= 0x9f;
diff --git a/src/include/86box/mem.h b/src/include/86box/mem.h
index 19a331925..81b46b2fa 100644
--- a/src/include/86box/mem.h
+++ b/src/include/86box/mem.h
@@ -448,6 +448,7 @@ extern void mem_flush_write_page(uint32_t addr, uint32_t virt);
 extern void mem_reset_page_blocks(void);
 
 extern void flushmmucache(void);
+extern void flushmmucache_write(void);
 extern void flushmmucache_pc(void);
 extern void flushmmucache_nopc(void);
 
diff --git a/src/include/86box/vid_ega.h b/src/include/86box/vid_ega.h
index 79375a2ae..5ac5c24e3 100644
--- a/src/include/86box/vid_ega.h
+++ b/src/include/86box/vid_ega.h
@@ -53,7 +53,6 @@ typedef struct ega_t {
     uint8_t seqregs[64];
     uint8_t egapal[16];
     uint8_t regs[256];
-
     uint8_t *vram;
 
     uint16_t light_pen;
@@ -73,6 +72,7 @@ typedef struct ega_t {
     int oddeven_page;
     int oddeven_chain;
     int vc;
+    int real_vc;
     int sc;
     int dispon;
     int hdisp_on;
@@ -113,6 +113,9 @@ typedef struct ega_t {
     int remap_required;
     int actual_type;
     int chipset;
+    int mono_display;
+
+    int mdacols[256][2][2];
 
     uint32_t charseta;
     uint32_t charsetb;
diff --git a/src/mem/mem.c b/src/mem/mem.c
index d85b20581..94c4ab788 100644
--- a/src/mem/mem.c
+++ b/src/mem/mem.c
@@ -225,6 +225,21 @@ flushmmucache(void)
 #endif
 }
 
+void
+flushmmucache_write(void)
+{
+    for (uint16_t c = 0; c < 256; c++) {
+        if (writelookup[c] != (int) 0xffffffff) {
+            page_lookup[writelookup[c]]  = NULL;
+            page_lookupp[writelookup[c]] = 4;
+            writelookup2[writelookup[c]] = LOOKUP_INV;
+            writelookupp[writelookup[c]] = 4;
+            writelookup[c]               = 0xffffffff;
+        }
+    }
+    mmuflush++;
+}
+
 void
 flushmmucache_pc(void)
 {
diff --git a/src/network/net_modem.c b/src/network/net_modem.c
index a8eab4290..af97a16db 100644
--- a/src/network/net_modem.c
+++ b/src/network/net_modem.c
@@ -1177,9 +1177,15 @@ modem_process_telnet(modem_t *modem, uint8_t *data, uint32_t size)
         uint8_t c = data[i];
         if (modem->telClient.inIAC) {
             if (modem->telClient.recCommand) {
+                modem_log("modem_process_telnet: received command %i, option %i\n", modem->telClient.command, c);
+
                 if ((c != 0) && (c != 1) && (c != 3)) {
-                    if (modem->telClient.command > 250) {
-                        /* Reject anything we don't recognize */
+                    /* Reject anything we don't recognize */
+                    if (modem->telClient.command == 251 || modem->telClient.command == 252) {
+                        modem_data_mode_process_byte(modem, 0xff);
+                        modem_data_mode_process_byte(modem, 254);
+                        modem_data_mode_process_byte(modem, c); /* Don't do crap! */
+                    } else if (modem->telClient.command == 253 || modem->telClient.command == 254) {
                         modem_data_mode_process_byte(modem, 0xff);
                         modem_data_mode_process_byte(modem, 252);
                         modem_data_mode_process_byte(modem, c); /* We won't do crap! */
diff --git a/src/video/vid_cga.c b/src/video/vid_cga.c
index f439cb1d8..a24162019 100644
--- a/src/video/vid_cga.c
+++ b/src/video/vid_cga.c
@@ -442,7 +442,7 @@ cga_interpolate_linear(uint8_t co1, uint8_t co2, double fraction)
     r2 = pow((r1 >= 0.0) ? r1 : -r1, 1.0 / 2.19921875);
     if (r1 <= 0.0)
         r2 = -r2;
-    ret = (uint8_t) (r2 * 255.0);
+    ret = (uint8_t) round(r2 * 255.0);
 
     return ret;
 }
diff --git a/src/video/vid_ega.c b/src/video/vid_ega.c
index 17fea7b81..438d5c98d 100644
--- a/src/video/vid_ega.c
+++ b/src/video/vid_ega.c
@@ -620,11 +620,15 @@ ega_recalctimings(ega_t *ega)
         ega->y_add >>= 1;
 
     if (ega->seqregs[1] & 8) {
-        disptime    = (double) ((ega->crtc[0] + 2) << 1);
-        _dispontime = (double) ((ega->crtc[1] + 1) << 1);
+        disptime     = (double) ((ega->crtc[0] + 2) << 1);
+        _dispontime  = (double) ((ega->crtc[1] + 1) << 1);
     } else {
-        disptime    = (double) (ega->crtc[0] + 2);
-        _dispontime = (double) (ega->crtc[1] + 1);
+        disptime     = (double) (ega->crtc[0] + 2);
+        _dispontime  = (double) (ega->crtc[1] + 1);
+    }
+    if ((ega->actual_type == EGA_SUPEREGA) && (ega->crtc[0xf9] & 0x01)) {
+        disptime    *= 2.0;
+        _dispontime *= 2.0;
     }
     _dispofftime = disptime - _dispontime;
     _dispontime *= crtcconst;
@@ -852,7 +856,10 @@ ega_poll(void *priv)
                 ega->cca = ega->maback;
             }
         }
-        ega->vc++;
+        ega->real_vc++;
+        if ((ega->actual_type != EGA_SUPEREGA) || !(ega->crtc[0xf9] & 0x02) ||
+            !(ega->real_vc & 1))
+            ega->vc++;
         if (ega->chipset) {
             if (ega->hdisp > 640)
                 ega->vc &= 1023;
@@ -905,9 +912,13 @@ ega_poll(void *priv)
 
             if (ega->vres) {
                 wy = (ega->lastline - ega->firstline) << 1;
+                if ((ega->actual_type == EGA_SUPEREGA) && (ega->crtc[0xf9] & 0x02))
+                    wy >>= 1;
                 ega_doblit(wx, wy, ega);
             } else {
                 wy = ega->lastline - ega->firstline;
+                if ((ega->actual_type == EGA_SUPEREGA) && (ega->crtc[0xf9] & 0x02))
+                    wy >>= 1;
                 ega_doblit(wx, wy, ega);
             }
 
@@ -1436,6 +1447,26 @@ ega_init(ega_t *ega, int monitor_type, int is_mono)
 
     ega->pallook = pallook16;
 
+    for (uint16_t c = 0; c < 256; c++) {
+        ega->mdacols[c][0][0] = ega->mdacols[c][1][0] = ega->mdacols[c][1][1] = 16;
+        if (c & 8)
+            ega->mdacols[c][0][1] = 15 + 16;
+        else
+            ega->mdacols[c][0][1] = 7 + 16;
+    }
+    ega->mdacols[0x70][0][1] = 16;
+    ega->mdacols[0x70][0][0] = ega->mdacols[0x70][1][0] = ega->mdacols[0x70][1][1] = 16 + 15;
+    ega->mdacols[0xF0][0][1]                                                       = 16;
+    ega->mdacols[0xF0][0][0] = ega->mdacols[0xF0][1][0] = ega->mdacols[0xF0][1][1] = 16 + 15;
+    ega->mdacols[0x78][0][1]                                                       = 16 + 7;
+    ega->mdacols[0x78][0][0] = ega->mdacols[0x78][1][0] = ega->mdacols[0x78][1][1] = 16 + 15;
+    ega->mdacols[0xF8][0][1]                                                       = 16 + 7;
+    ega->mdacols[0xF8][0][0] = ega->mdacols[0xF8][1][0] = ega->mdacols[0xF8][1][1] = 16 + 15;
+    ega->mdacols[0x00][0][1] = ega->mdacols[0x00][1][1] = 16;
+    ega->mdacols[0x08][0][1] = ega->mdacols[0x08][1][1] = 16;
+    ega->mdacols[0x80][0][1] = ega->mdacols[0x80][1][1] = 16;
+    ega->mdacols[0x88][0][1] = ega->mdacols[0x88][1][1] = 16;
+
     egaswitches = monitor_type & 0xf;
 
     ega->vram_limit = 256 * 1024;
diff --git a/src/video/vid_ega_render.c b/src/video/vid_ega_render.c
index fe2632574..dd393e4b6 100644
--- a/src/video/vid_ega_render.c
+++ b/src/video/vid_ega_render.c
@@ -118,6 +118,7 @@ ega_render_text(ega_t *ega)
         const bool doublewidth   = ((ega->seqregs[1] & 8) != 0);
         const bool attrblink     = ((ega->attrregs[0x10] & 8) != 0);
         const bool attrlinechars = (ega->attrregs[0x10] & 4);
+        const bool monoattrs     = (ega->attrregs[0x10] & 2);
         const bool crtcreset     = ((ega->crtc[0x17] & 0x80) == 0);
         const bool seq9dot       = ((ega->seqregs[1] & 1) == 0);
         const int  dwshift       = doublewidth ? 1 : 0;
@@ -174,13 +175,23 @@ ega_render_text(ega_t *ega)
             if ((chr & ~0x1F) == 0xC0 && attrlinechars)
                 dat |= (dat >> 1) & 1;
 
-            for (int xx = 0; xx < charwidth; xx++)
-                p[xx] = (dat & (0x100 >> (xx >> dwshift))) ? fg : bg;
+            for (int xx = 0; xx < charwidth; xx++) {
+                if (monoattrs) {
+                    if ((ega->sc == ega->crtc[0x14]) && ((attr & 7) == 1))
+                        p[xx] = ega->mdacols[attr][attrblink][1];
+                    else
+                        p[xx] = ega->mdacols[attr][attrblink][dat & (0x100 >> (xx >> dwshift))];
+                } else
+                    p[xx] = (dat & (0x100 >> (xx >> dwshift))) ? fg : bg;
+            }
 
             ega->ma += 4;
             p += charwidth;
         }
         ega->ma &= 0x3ffff;
+
+        if (monoattrs)
+            video_process_8(ega->hdisp + ega->scrollcache, ega->displine);
     }
 }