Sync some files with pokegold

engine/printer/printer.asm

@@ -71,7 +71,7 @@ PrintDexEntry:
 	ld hl, hVBlank
 	ld a, [hl]
 	push af
-	ld [hl], 4
+	ld [hl], 4 ; vblank mode that calls AskSerial
 
 	ld a, 8 ; 16 rows
 	ld [wPrinterQueueLength], a
@@ -146,7 +146,7 @@ PrintPCBox:
 	ld hl, hVBlank
 	ld a, [hl]
 	push af
-	ld [hl], $4
+	ld [hl], 4 ; vblank mode that calls AskSerial
 
 	xor a
 	ldh [hBGMapMode], a
@@ -212,19 +212,23 @@ Printer_ResetRegistersAndStartDataSend:
 PrintUnownStamp:
 	ld a, [wPrinterQueueLength]
 	push af
+
 	xor a
 	ldh [hPrinter], a
 	call Printer_PlayMusic
+
 	ldh a, [rIE]
 	push af
 	xor a
 	ldh [rIF], a
 	ld a, (1 << SERIAL) | (1 << VBLANK)
 	ldh [rIE], a
+
 	ld hl, hVBlank
 	ld a, [hl]
 	push af
-	ld [hl], $4
+	ld [hl], 4 ; vblank mode that calls AskSerial
+
 	xor a
 	ldh [hBGMapMode], a
 	call LoadTilemapToTempTilemap
@@ -233,6 +237,7 @@ PrintUnownStamp:
 	call Printer_PrepareTilemapForPrint
 	call SafeLoadTempTilemapToTilemap
 	call Printer_ResetJoypadRegisters
+
 	ld a, 18 / 2
 	ld [wPrinterQueueLength], a
 .loop
@@ -260,10 +265,12 @@ PrintUnownStamp:
 	ldh [hVBlank], a
 	call Printer_CleanUpAfterSend
 	call SafeLoadTempTilemapToTilemap
+
 	xor a
 	ldh [rIF], a
 	pop af
 	ldh [rIE], a
+
 	pop af
 	ld [wPrinterQueueLength], a
 	ret
@@ -295,7 +302,7 @@ PrintMail:
 	ld hl, hVBlank
 	ld a, [hl]
 	push af
-	ld [hl], $4
+	ld [hl], 4 ; vblank mode that calls AskSerial
 
 	ld a, 18 / 2
 	ld [wPrinterQueueLength], a
@@ -338,7 +345,7 @@ PrintPartymon:
 	ld hl, hVBlank
 	ld a, [hl]
 	push af
-	ld [hl], $4
+	ld [hl], 4 ; vblank mode that calls AskSerial
 
 	ld a, 16 / 2
 	ld [wPrinterQueueLength], a
@@ -396,7 +403,7 @@ _PrintDiploma:
 	ld hl, hVBlank
 	ld a, [hl]
 	push af
-	ld [hl], $4
+	ld [hl], 4 ; vblank mode that calls AskSerial
 
 	ln a, 1, 0 ; to be loaded to wPrinterMargins
 	call Printer_PrepareTilemapForPrint