1 files changed, 87 insertions, 0 deletions
diff --git a/home/unknown.asm b/home/unknown.asm
index e2046e3..c216f62 100644
--- a/home/unknown.asm
+++ b/home/unknown.asm
@@ -1,6 +1,10 @@
 INCLUDE "constants.asm"
 
+if DEBUG
 SECTION "Empty function", ROM0[$2F97]
+else
+SECTION "Empty function", ROM0[$2F5B]
+endc
 
 InexplicablyEmptyFunction:: ; 2f97
 REPT 16
@@ -34,3 +38,86 @@ _2007:: ; 2007
     ld [wce5f], a
     call CloseSRAM
     ret
+
+SECTION "Unknown functions 2", ROM0[$2075]
+
+_2075:: ; 2075
+; Prepares a buffer for the clock display, which in the Debug ROM is displayed on the bottom of the screen.
+; This function is called every frame, and loads special tiles into the $66-$7a space.
+    ld hl, wcbd2
+    ld bc, $14
+    ld a, "　"
+    call ByteFill
+
+if DEBUG
+    ld hl, $d153
+    bit 0, [hl]
+    jr z, ._209e
+    ld hl, $d65b
+    ld de, wcbd2 + 4
+    ld c, $01
+    call _20CD
+    ld hl, $d65a
+    ld de, wcbd2 + 8
+    ld c, $01
+    call _20CD
+    ret
+._209e:
+endc
+
+    ld hl, hHours
+    ld de, wcbd2
+    call _20DC
+    ld hl, hMinutes
+    ld de, wcbd2 + 3
+    call _20DC
+    ldh a, [hDays]
+    and 7
+    add $71 ; Sunday
+    ld [wcbd2 + 6], a
+    ld a, $78 ; power
+    ld [wcbd2 + 9], a
+    inc a ; mobile
+    ld [wcbd2 + 11], a
+    ldh a, [hSeconds]
+    and 1
+    ret z
+    ld a, $70 ; :
+    ld [wcbd2 + 2], a
+    ret
+
+_20CD:: ; 20cd
+; PrintAsHex
+    ld a, [hli]
+    ld b, a
+    swap a
+    call _20F1
+    ld a, b
+    call _20F1
+    dec c
+    jr nz, _20CD
+    ret
+
+_20DC:: ; 20dc
+; PrintAsDec
+    ld a, [hli]
+    ld b, 0
+._20df:
+    inc b
+    sub 10
+    jr nc, ._20df
+    dec b
+    add 10
+    push af
+    ld a, b
+    call _20F1
+    pop af
+    call _20F1
+    ret
+
+_20F1:: ; 20f1
+    and %1111
+    add $66 ; digit 0
+    ld [de], a
+    inc de
+    ret