diff --git a/src/disk/hdc_ide.c b/src/disk/hdc_ide.c
index 56548766a..8b955c315 100644
--- a/src/disk/hdc_ide.c
+++ b/src/disk/hdc_ide.c
@@ -2610,8 +2610,8 @@ ide_callback(void *priv)
                 err = ABRT_ERR;
             else {
                 /* Only accept after RESET or DIAG. */
-                if (ide->params_specified) {
-                    ide->cfg_spt = ide->tf->secount;
+                if (!ide->params_specified) {
+                    ide->cfg_spt = (ide->tf->secount == 0) ? 256 : ide->tf->secount;
                     ide->cfg_hpc = ide->tf->head + 1;
 
                     ide->params_specified = 1;
diff --git a/src/machine/m_at_socket1.c b/src/machine/m_at_socket1.c
index 7d16e1381..ac836e05f 100644
--- a/src/machine/m_at_socket1.c
+++ b/src/machine/m_at_socket1.c
@@ -396,6 +396,8 @@ machine_at_tuliptc38_init(const machine_t *model)
     device_add(&ide_isa_device);
     device_add_params(&fdc37c6xx_device, (void *) (FDC37C651 | FDC37C6XX_IDE_PRI));
 
+    video_reset(gfxcard[0]);
+
     if (gfxcard[0] == VID_INTERNAL) {
         bios_load_aux_linear("roms/machines/tuliptc38/VBIOS.BIN",
                              0x000c0000, 32768, 0);
diff --git a/src/machine/m_at_socket2.c b/src/machine/m_at_socket2.c
index d8fdd79f1..5ec4039b2 100644
--- a/src/machine/m_at_socket2.c
+++ b/src/machine/m_at_socket2.c
@@ -311,6 +311,8 @@ machine_at_dell466np_init(const machine_t *model)
     machine_at_common_init(model);
     device_add(&sis_85c461_device);
 
+    video_reset(gfxcard[0]);
+
     if (gfxcard[0] == VID_INTERNAL)
         device_add(machine_get_vid_device(machine));
     else {
@@ -354,6 +356,8 @@ machine_at_valuepoint433_init(const machine_t *model) // hangs without the PS/2
     if (fdc_current[0] == FDC_INTERNAL)
         device_add(&fdc_at_device);
 
+    video_reset(gfxcard[0]);
+
     if (gfxcard[0] != VID_INTERNAL) {
         for (uint16_t i = 0; i < 32768; i++)
             rom[i] = mem_readb_phys(0x000c0000 + i);
diff --git a/src/machine/m_at_socket3.c b/src/machine/m_at_socket3.c
index bd044d65c..7c8c801f6 100644
--- a/src/machine/m_at_socket3.c
+++ b/src/machine/m_at_socket3.c
@@ -490,6 +490,8 @@ machine_at_tg486g_init(const machine_t *model)
 
     device_add_params(machine_get_kbc_device(machine), (void *) model->kbc_params);
 
+    video_reset(gfxcard[0]);
+
     if (gfxcard[0] != VID_INTERNAL) {
         for (uint16_t i = 0; i < 32768; i++)
             rom[i] = mem_readb_phys(0x000c0000 + i);