PHONE_DISPLAY_HEIGHT is 4, the number of visible phone entries

engine/battle/core.asm

@@ -6998,7 +6998,7 @@ GiveExperiencePoints:
 	ld a, [wCurPartyMon]
 	ld c, a
 	ld b, CHECK_FLAG
-	ld d, FALSE
+	ld d, 0
 	predef SmallFarFlagAction
 	ld a, c
 	and a

engine/pokegear/pokegear.asm

@@ -6,6 +6,8 @@
 	const POKEGEARCARD_RADIO ; 3
 NUM_POKEGEAR_CARDS EQU const_value
 
+PHONE_DISPLAY_HEIGHT EQU 4
+
 ; PokegearJumptable.Jumptable indexes
 	const_def
 	const POKEGEARSTATE_CLOCKINIT       ; 0
@@ -878,7 +880,7 @@ PokegearPhone_Joypad:
 	ld [wPokegearPhoneSelectedPerson], a
 	hlcoord 1, 4
 	ld a, [wPokegearPhoneCursorPosition]
-	ld bc, 20 * 2
+	ld bc, SCREEN_WIDTH * 2
 	call AddNTimes
 	ld [hl], "▷"
 	call PokegearPhoneContactSubmenu
@@ -982,7 +984,7 @@ PokegearPhone_GetDPad:
 .down
 	ld hl, wPokegearPhoneCursorPosition
 	ld a, [hl]
-	cp 3
+	cp PHONE_DISPLAY_HEIGHT - 1
 	jr nc, .scroll_page_down
 	inc [hl]
 	jr .done_joypad_same_page
@@ -990,7 +992,7 @@ PokegearPhone_GetDPad:
 .scroll_page_down
 	ld hl, wPokegearPhoneScrollPosition
 	ld a, [hl]
-	cp 6
+	cp CONTACT_LIST_SIZE - PHONE_DISPLAY_HEIGHT
 	ret nc
 	inc [hl]
 	jr .done_joypad_update_page
@@ -1011,14 +1013,12 @@ PokegearPhone_GetDPad:
 
 PokegearPhone_UpdateCursor:
 	ld a, " "
-	hlcoord 1, 4
-	ld [hl], a
-	hlcoord 1, 6
-	ld [hl], a
-	hlcoord 1, 8
-	ld [hl], a
-	hlcoord 1, 10
+x = 4
+rept PHONE_DISPLAY_HEIGHT
+	hlcoord 1, x
 	ld [hl], a
+x = x + 2
+endr
 	hlcoord 1, 4
 	ld a, [wPokegearPhoneCursorPosition]
 	ld bc, 2 * SCREEN_WIDTH
@@ -1028,10 +1028,10 @@ PokegearPhone_UpdateCursor:
 
 PokegearPhone_UpdateDisplayList:
 	hlcoord 1, 3
-	ld b, 9
+	ld b, PHONE_DISPLAY_HEIGHT * 2 + 1
 	ld a, " "
 .row
-	ld c, 18
+	ld c, SCREEN_WIDTH - 2
 .col
 	ld [hli], a
 	dec c
@@ -1042,7 +1042,7 @@ PokegearPhone_UpdateDisplayList:
 	jr nz, .row
 	ld a, [wPokegearPhoneScrollPosition]
 	ld e, a
-	ld d, $0
+	ld d, 0
 	ld hl, wPhoneList
 	add hl, de
 	xor a
@@ -1064,7 +1064,7 @@ PokegearPhone_UpdateDisplayList:
 	ld a, [wPokegearPhoneLoadNameBuffer]
 	inc a
 	ld [wPokegearPhoneLoadNameBuffer], a
-	cp 4
+	cp PHONE_DISPLAY_HEIGHT
 	jr c, .loop
 	call PokegearPhone_UpdateCursor
 	ret
@@ -1463,15 +1463,15 @@ RadioChannels:
 ; entries correspond to constants/radio_constants.asm
 
 ; frequency value given here = 4 × ingame_frequency − 2
-	dbw 16, .PKMNTalkAndPokedexShow
-	dbw 28, .PokemonMusic
-	dbw 32, .LuckyChannel
-	dbw 40, .BuenasPassword
-	dbw 52, .RuinsOfAlphRadio
-	dbw 64, .PlacesAndPeople
-	dbw 72, .LetsAllSing
-	dbw 78, .PokeFluteRadio
-	dbw 80, .EvolutionRadio
+	dbw 16, .PKMNTalkAndPokedexShow ; 04.5
+	dbw 28, .PokemonMusic           ; 07.5
+	dbw 32, .LuckyChannel           ; 08.5
+	dbw 40, .BuenasPassword         ; 10.5
+	dbw 52, .RuinsOfAlphRadio       ; 13.5
+	dbw 64, .PlacesAndPeople        ; 16.5
+	dbw 72, .LetsAllSing            ; 18.5
+	dbw 78, .PokeFluteRadio         ; 20.0
+	dbw 80, .EvolutionRadio         ; 20.5
 	db -1
 
 .PKMNTalkAndPokedexShow:

engine/smallflag.asm

@@ -33,9 +33,10 @@ SmallFarFlagAction:
 
 ; What are we doing to this flag?
 	dec b
-	jr z, .set ; 1
+	jr z, .set ; 1 = SET_FLAG
 	dec b
-	jr z, .check ; 2
+	jr z, .check ; 2 = CHECK_FLAG
+; 0 = RESET_FLAG
 
 .reset
 	ld a, c