From 32b02147925566bac93bf71b002860335583574c Mon Sep 17 00:00:00 2001
From: ElectroDeoxys <ElectroDeoxys@gmail.com>
Date: Thu, 9 Sep 2021 08:51:12 +0100
Subject: Split home bank

---
 src/home/memory.asm | 86 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 86 insertions(+)
 create mode 100644 src/home/memory.asm

(limited to 'src/home/memory.asm')

diff --git a/src/home/memory.asm b/src/home/memory.asm
new file mode 100644
index 0000000..b07ffd8
--- /dev/null
+++ b/src/home/memory.asm
@@ -0,0 +1,86 @@
+; decompresses data from a given bank
+; uses values initialized by InitDataDecompression
+; input:
+; bc = row width
+; de = buffer to place decompressed data
+DecompressDataFromBank: ; 3be4 (0:3be4)
+	ldh a, [hBankROM]
+	push af
+	ld a, [wTempPointerBank]
+	call BankswitchROM
+	call DecompressData
+	pop af
+	call BankswitchROM
+	ret
+
+; Copies bc bytes from [wTempPointer] to de
+CopyBankedDataToDE: ; 3bf5 (0:3bf5)
+	ldh a, [hBankROM]
+	push af
+	push hl
+	ld a, [wTempPointerBank]
+	call BankswitchROM
+	ld a, [wTempPointer]
+	ld l, a
+	ld a, [wTempPointer + 1]
+	ld h, a
+	call CopyDataHLtoDE_SaveRegisters
+	pop hl
+	pop af
+	call BankswitchROM
+	ret
+
+; fill bc bytes of data at hl with a
+FillMemoryWithA: ; 3c10 (0:3c10)
+	push hl
+	push de
+	push bc
+	ld e, a
+.loop
+	ld [hl], e
+	inc hl
+	dec bc
+	ld a, b
+	or c
+	jr nz, .loop
+	pop bc
+	pop de
+	pop hl
+	ret
+
+; fill 2*bc bytes of data at hl with d,e
+FillMemoryWithDE: ; 3c1f (0:3c1f)
+	push hl
+	push bc
+.loop
+	ld [hl], e
+	inc hl
+	ld [hl], d
+	inc hl
+	dec bc
+	ld a, b
+	or c
+	jr nz, .loop
+	pop bc
+	pop hl
+	ret
+
+; gets far byte a:hl, outputs value in a
+GetFarByte: ; 3c2d (0:3c2d)
+	push hl
+	push af
+	ldh a, [hBankROM]
+	push af
+	push hl
+	ld hl, sp+$05
+	ld a, [hl]
+	call BankswitchROM
+	pop hl
+	ld a, [hl]
+	ld hl, sp+$03
+	ld [hl], a
+	pop af
+	call BankswitchROM
+	pop af
+	pop hl
+	ret
-- 
cgit v1.2.3


From 0017fc2d171c87d7bab4c9be90e1069ae95a8071 Mon Sep 17 00:00:00 2001
From: ElectroDeoxys <ElectroDeoxys@gmail.com>
Date: Thu, 9 Sep 2021 08:54:29 +0100
Subject: Remove home bank address comments

---
 src/home/memory.asm | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

(limited to 'src/home/memory.asm')

diff --git a/src/home/memory.asm b/src/home/memory.asm
index b07ffd8..c5c3317 100644
--- a/src/home/memory.asm
+++ b/src/home/memory.asm
@@ -3,7 +3,7 @@
 ; input:
 ; bc = row width
 ; de = buffer to place decompressed data
-DecompressDataFromBank: ; 3be4 (0:3be4)
+DecompressDataFromBank:
 	ldh a, [hBankROM]
 	push af
 	ld a, [wTempPointerBank]
@@ -14,7 +14,7 @@ DecompressDataFromBank: ; 3be4 (0:3be4)
 	ret
 
 ; Copies bc bytes from [wTempPointer] to de
-CopyBankedDataToDE: ; 3bf5 (0:3bf5)
+CopyBankedDataToDE:
 	ldh a, [hBankROM]
 	push af
 	push hl
@@ -31,7 +31,7 @@ CopyBankedDataToDE: ; 3bf5 (0:3bf5)
 	ret
 
 ; fill bc bytes of data at hl with a
-FillMemoryWithA: ; 3c10 (0:3c10)
+FillMemoryWithA:
 	push hl
 	push de
 	push bc
@@ -49,7 +49,7 @@ FillMemoryWithA: ; 3c10 (0:3c10)
 	ret
 
 ; fill 2*bc bytes of data at hl with d,e
-FillMemoryWithDE: ; 3c1f (0:3c1f)
+FillMemoryWithDE:
 	push hl
 	push bc
 .loop
@@ -66,7 +66,7 @@ FillMemoryWithDE: ; 3c1f (0:3c1f)
 	ret
 
 ; gets far byte a:hl, outputs value in a
-GetFarByte: ; 3c2d (0:3c2d)
+GetFarByte:
 	push hl
 	push af
 	ldh a, [hBankROM]
-- 
cgit v1.2.3