diff --git a/src/machine/m_at_286_386sx.c b/src/machine/m_at_286_386sx.c
index 7da687c16..eb5394ba4 100644
--- a/src/machine/m_at_286_386sx.c
+++ b/src/machine/m_at_286_386sx.c
@@ -227,8 +227,6 @@ machine_at_pbl300sx_init(const machine_t *model)
     device_add(&acc2036_device);
 
     device_add(&keyboard_ps2_phoenix_device);
-
-    device_add(&ide_isa_device);
     device_add(&um82c862f_ide_device);
 
     if (gfxcard[0] == VID_INTERNAL)
diff --git a/src/machine/m_at_386dx_486.c b/src/machine/m_at_386dx_486.c
index 6de17101c..0c0582c3c 100644
--- a/src/machine/m_at_386dx_486.c
+++ b/src/machine/m_at_386dx_486.c
@@ -758,8 +758,6 @@ machine_at_c747_init(const machine_t *model)
        desired behavior: command A9 does absolutely nothing.
      */
     device_add(&keyboard_at_siemens_device);
-
-    device_add(&ide_isa_device);
     device_add(&um82c862f_ide_device);
 
     return ret;
@@ -1057,8 +1055,6 @@ machine_at_advantage40xxd_init(const machine_t *model)
         device_add(machine_get_vid_device(machine));
 
     device_add(&keyboard_ps2_phoenix_device);
-
-    device_add(&ide_vlb_device);
     device_add(&um82c863f_ide_device);
 
     device_add(&intel_flash_bxt_device);
diff --git a/src/video/vid_ega.c b/src/video/vid_ega.c
index 1cfea782c..21671f4b3 100644
--- a/src/video/vid_ega.c
+++ b/src/video/vid_ega.c
@@ -158,9 +158,11 @@ ega_out(uint16_t addr, uint8_t val, void *priv)
             if (ega->alt_addr == 1)
                 base_addr = 0x02a0;
 #endif
-            io_removehandler(base_addr, 0x0020, ega_in, NULL, NULL, ega_out, NULL, NULL, ega);
-            if (!(val & 1))
-                io_sethandler(base_addr, 0x0020, ega_in, NULL, NULL, ega_out, NULL, NULL, ega);
+            if (ega->priv_parent == NULL) {
+                io_removehandler(base_addr, 0x0020, ega_in, NULL, NULL, ega_out, NULL, NULL, ega);
+                if (!(val & 1))
+                    io_sethandler(base_addr, 0x0020, ega_in, NULL, NULL, ega_out, NULL, NULL, ega);
+            }
             ega_recalctimings(ega);
             if ((type == EGA_TYPE_COMPAQ) && !(val & 0x02))
                 mem_mapping_disable(&ega->mapping);
diff --git a/src/video/vid_jega.c b/src/video/vid_jega.c
index 257acfff0..f49c92e64 100644
--- a/src/video/vid_jega.c
+++ b/src/video/vid_jega.c
@@ -151,6 +151,8 @@ extern uint32_t        pallook64[256];
 static bool is_SJIS_1(uint8_t chr) { return (chr >= 0x81 && chr <= 0x9f) || (chr >= 0xe0 && chr <= 0xfc); }
 static bool is_SJIS_2(uint8_t chr) { return (chr >= 0x40 && chr <= 0x7e) || (chr >= 0x80 && chr <= 0xfc); }
 
+static uint8_t         jega_in(uint16_t addr, void *priv);
+
 static uint16_t
 SJIS_to_SEQ(uint16_t sjis)
 {
@@ -422,7 +424,10 @@ jega_out(uint16_t addr, uint8_t val, void *priv)
             if (!jega->attrff) {
                 jega->attraddr = val & 31;
                 if ((val & 0x20) != jega->attr_palette_enable) {
-                    jega->ega.fullchange      = 3;
+                    if (jega->is_vga)
+                        jega->vga.svga.fullchange = 3;
+                    else
+                        jega->ega.fullchange      = 3;
                     jega->attr_palette_enable = val & 0x20;
                     jega_recalctimings(jega);
                 }
@@ -449,6 +454,13 @@ jega_out(uint16_t addr, uint8_t val, void *priv)
             }
             jega->attrff ^= 1;
             break;
+        case 0x3c2:
+            if (jega->regs[RMOD1] & 0x0c) {
+                io_removehandler(0x03a0, 0x0020, jega_in, NULL, NULL, jega_out, NULL, NULL, jega);
+                if (!(val & 1))
+                    io_sethandler(0x03a0, 0x0020, jega_in, NULL, NULL, jega_out, NULL, NULL, jega);
+            }
+            break;
         case 0x3b4:
         case 0x3d4:
             /* Index 0x00-0x1F (write only), 0xB8-0xDF (write and read) */
@@ -742,9 +754,19 @@ jega_commoninit(const device_t *info, void *priv, int vga)
     jega->is_vga = vga;
     if (vga) {
         video_inform(VIDEO_FLAG_TYPE_SPECIAL, &timing_vga);
-        vga_init(info, &jega->vga, 1);
+        svga_init(info, &jega->vga.svga, &jega->vga, 1 << 18, /*256kb*/
+                  NULL,
+                  jega_in, jega_out,
+                  NULL,
+                  NULL);
+
+        jega->vga.svga.bpp     = 8;
+        jega->vga.svga.miscout = 1;
+
+        jega->vga.svga.vga_enabled = 0;
         jega->vga.svga.priv_parent = jega;
         jega->pallook = jega->vga.svga.pallook;
+        io_sethandler(0x03c0, 0x0020, jega_in, NULL, NULL, jega_out, NULL, NULL, jega);
     } else {
         for (int c = 0; c < 256; c++) {
             pallook64[c] = makecol32(((c >> 2) & 1) * 0xaa, ((c >> 1) & 1) * 0xaa, (c & 1) * 0xaa);
@@ -758,9 +780,11 @@ jega_commoninit(const device_t *info, void *priv, int vga)
         mem_mapping_add(&jega->ega.mapping, 0xa0000, 0x20000,
                         ega_read, NULL, NULL, ega_write, NULL, NULL,
                         NULL, MEM_MAPPING_EXTERNAL, &jega->ega);
+        /* I/O 3DD and 3DE are used by Oki if386 */
+        io_sethandler(0x03c0, 0x001c, jega_in, NULL, NULL, jega_out, NULL, NULL, jega);
     }
     /* I/O 3DD and 3DE are used by Oki if386 */
-    io_sethandler(0x03b0, 0x002c, jega_in, NULL, NULL, jega_out, NULL, NULL, jega);
+    // io_sethandler(0x03b0, 0x002c, jega_in, NULL, NULL, jega_out, NULL, NULL, jega);
     jega->regs[RMOD1] = 0x48;
 }
 
diff --git a/src/video/vid_svga.c b/src/video/vid_svga.c
index 449a7bd43..f9d7bc4a0 100644
--- a/src/video/vid_svga.c
+++ b/src/video/vid_svga.c
@@ -280,9 +280,11 @@ svga_out(uint16_t addr, uint8_t val, void *priv)
         case 0x3c2:
             svga->miscout  = val;
             svga->vidclock = val & 4;
-            io_removehandler(0x03a0, 0x0020, svga->video_in, NULL, NULL, svga->video_out, NULL, NULL, svga->priv);
-            if (!(val & 1))
-                io_sethandler(0x03a0, 0x0020, svga->video_in, NULL, NULL, svga->video_out, NULL, NULL, svga->priv);
+            if (svga->priv_parent == NULL) {
+                io_removehandler(0x03a0, 0x0020, svga->video_in, NULL, NULL, svga->video_out, NULL, NULL, svga->priv);
+                if (!(val & 1))
+                    io_sethandler(0x03a0, 0x0020, svga->video_in, NULL, NULL, svga->video_out, NULL, NULL, svga->priv);
+            }
             svga_recalctimings(svga);
             break;
         case 0x3c3: