diff --git a/.gitignore b/.gitignore
index 84e7a0787..1ca279d74 100644
--- a/.gitignore
+++ b/.gitignore
@@ -80,3 +80,12 @@ dev/sdcards6/
 dev/sdcards5/sdcard_timings5.png
 ezeptocore.uf2
 .codex
+dev/sdcards7/gigastone32gb_1.txt
+dev/sdcards7/kexing16gb_1.txt
+dev/sdcards7/kexing16gb_2.txt
+dev/sdcards7/kexing16gb_3.txt
+dev/sdcards7/kexing16gb_4.txt
+dev/sdcards7/kootion16gb_1.txt
+dev/sdcards7/kootion16gb_2.txt
+dev/sdcards7/kootion16gb_4.txt
+dev/analyze_sdcards7.py
diff --git a/docs/content/combos/jump_page_lock.md b/docs/content/combos/jump_page_lock.md
new file mode 100644
index 000000000..3c70a0c2b
--- /dev/null
+++ b/docs/content/combos/jump_page_lock.md
@@ -0,0 +1,13 @@
++++
+title = 'Jump page lock'
+date = 2024-02-01T12:33:06-08:00
+short = 'Lock jump buttons to a slice page'
+buttons = ['D']
+weight = 11
+mode = 'jump'
+icon = 'lock'
++++
+
+In `JUMP` mode, press **D** by itself to cycle where the **1-16** jump buttons point: current page, first page, second page, third page.
+
+The top **C** and **D** lights show the lock: both off follows the current page, **C** is first page, **D** is second page, and both lit is third page. Locked pages wrap around if the sample has fewer slices.
diff --git a/lib/button_handler.h b/lib/button_handler.h
index 169b4f00a..194cb873d 100644
--- a/lib/button_handler.h
+++ b/lib/button_handler.h
@@ -21,9 +21,21 @@ int16_t key_on_buttons_last[BUTTONMATRIX_BUTTONS_MAX];
 bool key_did_go_off[BUTTONMATRIX_BUTTONS_MAX];
 uint16_t key_num_presses;
 bool KEY_C_sample_select = false;
+bool jump_page_lock_d_alone_candidate = false;
 
 bool button_is_pressed(uint8_t key) { return key_on_buttons[key] > 0; }
 
+void maybe_toggle_jump_page_lock_on_d_release(uint8_t key) {
+  if (key != KEY_D) {
+    return;
+  }
+  if (jump_page_lock_d_alone_candidate && mode_buttons16 == MODE_JUMP) {
+    jump_page_lock = (jump_page_lock + 1) % 4;
+    printf("[button_handler] jump_page_lock: %d\n", jump_page_lock);
+  }
+  jump_page_lock_d_alone_candidate = false;
+}
+
 int8_t single_step_pressed() {
   uint8_t pressed = 0;
   int8_t val = -1;
@@ -258,7 +270,7 @@ void button_key_on_single(uint8_t key) {
       // 1-16 (jump mode)
       // do jump
       debounce_quantize = 2;
-      key_do_jump(key - 4);
+      key_do_physical_jump(key - 4);
       dub_step_break = 0;
       dub_step_divider = 0;
       dub_step_beat = beat_current;
@@ -849,6 +861,7 @@ bool button_handler(ButtonMatrix *bm) {
     if (bm->off[i] == KEY_A || bm->off[i] == KEY_D) {
       cued_sound_selector = false;
     }
+    maybe_toggle_jump_page_lock_on_d_release(bm->off[i]);
     // printf("turned off %d\n", bm->off[i]);
     if (key_held_on && (bm->off[i] == key_held_num)) {
       button_key_off_held(bm->off[i]);
@@ -894,6 +907,12 @@ bool button_handler(ButtonMatrix *bm) {
     if (key_total_pressed == 1) {
       key_timer_on = 0;
     }
+    if (bm->on[i] == KEY_D) {
+      jump_page_lock_d_alone_candidate =
+          mode_buttons16 == MODE_JUMP && key_total_pressed == 1;
+    } else if (key_on_buttons[KEY_D] > 0) {
+      jump_page_lock_d_alone_candidate = false;
+    }
     if (!key_held_on) {
       key_held_on = true;
       key_held_num = bm->on[i];
@@ -1329,8 +1348,12 @@ bool button_handler(ButtonMatrix *bm) {
     } else if (mode_buttons16 == MODE_JUMP) {
       LEDS_set(leds, 0, LED_BRIGHT);
       LEDS_set(leds, 1, LED_BLINK);
-      LEDS_set(leds, 2, 0);
-      LEDS_set(leds, 3, 0);
+      LEDS_set(leds, 2,
+               (jump_page_lock & JUMP_PAGE_LOCK_FIRST) ? LED_BRIGHT
+                                                        : LED_NONE);
+      LEDS_set(leds, 3,
+               (jump_page_lock & JUMP_PAGE_LOCK_SECOND) ? LED_BRIGHT
+                                                         : LED_NONE);
     } else if (mode_buttons16 == MODE_BASS) {
       LEDS_set(leds, 0, LED_BRIGHT);
       LEDS_set(leds, 1, 0);
diff --git a/lib/globals.h b/lib/globals.h
index 3325c5f1e..4b187b734 100644
--- a/lib/globals.h
+++ b/lib/globals.h
@@ -130,6 +130,13 @@ void regenerate_random_sequence_arr() {
 // mode toggles
 //   mode  ==0  ==1
 uint8_t mode_buttons16 = 0;
+#ifdef INCLUDE_ZEPTOCORE
+#define JUMP_PAGE_LOCK_DEFAULT 0
+#define JUMP_PAGE_LOCK_FIRST 1
+#define JUMP_PAGE_LOCK_SECOND 2
+#define JUMP_PAGE_LOCK_THIRD 3
+uint8_t jump_page_lock = JUMP_PAGE_LOCK_DEFAULT;
+#endif
 bool mode_mute = 0;
 bool mode_play = 0;
 bool mute_because_of_playback_type = false;
@@ -632,46 +639,61 @@ void do_update_phase_from_beat_current() {
   jump_precedence = false;
 }
 
-void key_do_jump(uint8_t beat) {
-  if (beat >= 0 && beat < 16) {
+void key_do_jump_to_slice(int32_t slice, uint8_t sequencer_beat) {
 #ifdef INCLUDE_ZEPTOCORE
-    if (clock_in_do && clock_input_absent_zeptocore &&
-        clock_in_activator >= 3) {
-      // reset beats
-      bpm_timer_counter = 0;
-      beat_total = 0;
-      key_jump_debounce = 0;
-      dub_step_break = -1;
-      retrig_beat_num = 0;
-      beat_current = 0;
-      playback_stopped = false;
-      clock_in_ready = false;
-      clock_in_activator = 0;
-      clock_in_do = false;
-    }
+  if (clock_in_do && clock_input_absent_zeptocore && clock_in_activator >= 3) {
+    // reset beats
+    bpm_timer_counter = 0;
+    beat_total = 0;
+    key_jump_debounce = 0;
+    dub_step_break = -1;
+    retrig_beat_num = 0;
+    beat_current = 0;
+    playback_stopped = false;
+    clock_in_ready = false;
+    clock_in_activator = 0;
+    clock_in_do = false;
+  }
 #endif
-    // printf("key_do_jump %d\n", beat);
-    // TODO: [0] should be which sequencer it is on
-    if (sequencerhandler[0].recording) {
-      Sequencer_add(sf->sequencers[0][sf->sequence_sel[0]], beat,
-                    bpm_timer_counter);
+  // TODO: [0] should be which sequencer it is on
+  if (sequencerhandler[0].recording) {
+    Sequencer_add(sf->sequencers[0][sf->sequence_sel[0]], sequencer_beat,
+                  bpm_timer_counter);
+  }
+  key_jump_debounce = 1;
+  beat_current = slice;
+  retrig_pitch = PITCH_VAL_MID;
+  // reset filter
+  if (global_filter_index != retrig_filter_original &&
+      retrig_filter_original > 0) {
+    global_filter_index = retrig_filter_original;
+    for (uint8_t channel = 0; channel < 2; channel++) {
+      ResonantFilter_setFc(resFilter[channel], global_filter_index);
     }
-    key_jump_debounce = 1;
-    beat_current = floor(beat_current / 16) * 16 + beat;
-    retrig_pitch = PITCH_VAL_MID;
-    // reset filter
-    if (global_filter_index != retrig_filter_original &&
-        retrig_filter_original > 0) {
-      global_filter_index = retrig_filter_original;
-      for (uint8_t channel = 0; channel < 2; channel++) {
-        ResonantFilter_setFc(resFilter[channel], global_filter_index);
-      }
-      retrig_filter_original = 0;
+    retrig_filter_original = 0;
+  }
+  jump_precedence = true;
+  do_update_phase_from_beat_current();
+}
+
+void key_do_jump(uint8_t beat) {
+  if (beat < 16) {
+    // printf("key_do_jump %d\n", beat);
+    key_do_jump_to_slice(floor(beat_current / 16) * 16 + beat, beat);
+  }
+}
+
+#ifdef INCLUDE_ZEPTOCORE
+void key_do_physical_jump(uint8_t beat) {
+  if (beat < 16) {
+    int32_t slice = floor(beat_current / 16) * 16 + beat;
+    if (jump_page_lock > JUMP_PAGE_LOCK_DEFAULT) {
+      slice = (jump_page_lock - 1) * 16 + beat;
     }
-    jump_precedence = true;
-    do_update_phase_from_beat_current();
+    key_do_jump_to_slice(slice, beat);
   }
 }
+#endif
 
 void step_sequencer_emit(uint8_t key) {
 #ifdef INCLUDE_MIDI