Use BANK for hardcoded WRAM banks (except where bankswitches appear unnecessary).

engine/events/heal_machine_anim.asm

@@ -198,7 +198,7 @@ INCBIN "gfx/overworld/heal_machine.2bpp"
 .go
 	ld a, [rSVBK]
 	push af
-	ld a, $5
+	ld a, BANK(wOBPals2)
 	ld [rSVBK], a
 
 	ld hl, wOBPals2 palette PAL_OW_TREE

engine/events/magnet_train.asm

@@ -16,7 +16,7 @@ Special_MagnetTrain: ; 8cc04
 	ld h, a
 	ld a, [rSVBK]
 	push af
-	ld a, $5
+	ld a, BANK(wMagnetTrain)
 	ld [rSVBK], a
 
 	ld a, h
@@ -129,7 +129,7 @@ MagntTrain_LoadGFX_PlayMusic: ; 8ccc9
 	ld [hSCY], a
 	ld a, [rSVBK]
 	push af
-	ld a, $1
+	ld a, BANK(wPlayerGender)
 	ld [rSVBK], a
 	farcall GetPlayerIcon
 	pop af
@@ -325,7 +325,7 @@ MagnetTrain_Jumptable: ; 8cdf7
 	ld b, SPRITE_ANIM_INDEX_MAGNET_TRAIN_RED
 	ld a, [rSVBK]
 	push af
-	ld a, $1
+	ld a, BANK(wPlayerGender)
 	ld [rSVBK], a
 	ld a, [wPlayerGender]
 	bit 0, a
@@ -429,7 +429,7 @@ MagnetTrain_Jumptable_FirstRunThrough: ; 8ceae
 	call DelayFrame
 	ld a, [rSVBK]
 	push af
-	ld a, $1
+	ld a, BANK(wEnvironment)
 	ld [rSVBK], a
 	ld a, [TimeOfDayPal]
 	push af

engine/events/poisonstep_pals.asm

@@ -26,7 +26,7 @@ LoadPoisonBGPals: ; cbcdd
 .cgb
 	ld a, [rSVBK]
 	push af
-	ld a, $5
+	ld a, BANK(wBGPals2)
 	ld [rSVBK], a
 	ld hl, wBGPals2
 	ld c, 4 palettes

engine/events/print_unown.asm

@@ -154,7 +154,7 @@ UnownPrinter: ; 16be4
 .Load2bppToSRAM: ; 16cff
 	ld a, [rSVBK]
 	push af
-	ld a, $6
+	ld a, BANK(wDecompressScratch)
 	ld [rSVBK], a
 
 	ld a, BANK(sScratch)