diff --git a/Makefile b/Makefile
index c057f9452..6f8be4000 100644
--- a/Makefile
+++ b/Makefile
@@ -67,6 +67,7 @@ $(B_DIR)/lib/ultra/gu/ortho.o: LOOPUNROLL :=
 $(B_DIR)/lib/ultra/io/conteepread.o: LOOPUNROLL :=
 $(B_DIR)/lib/ultra/io/conteepwrite.o: LOOPUNROLL :=
 $(B_DIR)/lib/ultra/io/contpfs.o: LOOPUNROLL :=
+$(B_DIR)/lib/ultra/io/contramread.o: LOOPUNROLL :=
 $(B_DIR)/lib/ultra/io/pfschecker.o: LOOPUNROLL :=
 $(B_DIR)/lib/ultra/io/pfsgetstatus.o: LOOPUNROLL :=
 
diff --git a/src/include/PR/os_cont.h b/src/include/PR/os_cont.h
index 970110611..62d5a41c7 100644
--- a/src/include/PR/os_cont.h
+++ b/src/include/PR/os_cont.h
@@ -116,7 +116,8 @@ typedef struct
     /* 0x1 */ u8 txsize;
     /* 0x2 */ u8 rxsize;
     /* 0x3 */ u8 cmd;
-    /* 0x4 */ u16 address;
+    /* 0x4 */ u8 hi;
+    /* 0x4 */ u8 lo;
     /* 0x6 */ u8 data[BLOCKSIZE];
     /* 0x26 */ u8 datacrc;
 } __OSContRamReadFormat;
diff --git a/src/include/data.h b/src/include/data.h
index 3f27c52b4..011252cea 100644
--- a/src/include/data.h
+++ b/src/include/data.h
@@ -120,7 +120,7 @@ extern OSThread *__osRunningThread;
 extern OSThread *__osFaultedThread;
 extern u32 __osSiAccessQueueEnabled;
 extern u32 __osContInitialized;
-extern u32 var80060970;
+extern s32 __osPfsLastChannel;
 extern s32 g_PfsPrevChannel;
 extern u8 g_PfsPrevBank;
 extern u32 var80060990;
diff --git a/src/include/libultra_internal.h b/src/include/libultra_internal.h
index e7738f02e..ee65f7b01 100644
--- a/src/include/libultra_internal.h
+++ b/src/include/libultra_internal.h
@@ -65,5 +65,7 @@ s32 __osCheckPackId(OSPfs *pfs, __OSPackId *temp);
 s32 __osGetId(OSPfs *pfs);
 s32 __osCheckId(OSPfs *pfs);
 s32 __osPfsRWInode(OSPfs *pfs, __OSInode *inode, u8 flag, u8 bank);
+u8 __osContAddressCrc(u16 inaddr);
+u8 __osContDataCrc(u8 *data);
 
 #endif
diff --git a/src/lib/ultra/io/contramread.c b/src/lib/ultra/io/contramread.c
index 1470b86ff..b758ad7bb 100644
--- a/src/lib/ultra/io/contramread.c
+++ b/src/lib/ultra/io/contramread.c
@@ -1,156 +1,72 @@
 #include <libultra_internal.h>
+#include "bss.h"
 #include "data.h"
 
-u32 var80060970 = 0xffffffff;
+s32 __osPfsLastChannel = -1;
 
-GLOBAL_ASM(
-glabel __osContRamRead
-/*    4b860:	27bdffa0 */ 	addiu	$sp,$sp,-96
-/*    4b864:	afbf003c */ 	sw	$ra,0x3c($sp)
-/*    4b868:	afb60030 */ 	sw	$s6,0x30($sp)
-/*    4b86c:	afb5002c */ 	sw	$s5,0x2c($sp)
-/*    4b870:	afb1001c */ 	sw	$s1,0x1c($sp)
-/*    4b874:	00a08825 */ 	or	$s1,$a1,$zero
-/*    4b878:	0080b025 */ 	or	$s6,$a0,$zero
-/*    4b87c:	afbe0038 */ 	sw	$s8,0x38($sp)
-/*    4b880:	afb70034 */ 	sw	$s7,0x34($sp)
-/*    4b884:	afb40028 */ 	sw	$s4,0x28($sp)
-/*    4b888:	afb30024 */ 	sw	$s3,0x24($sp)
-/*    4b88c:	afb20020 */ 	sw	$s2,0x20($sp)
-/*    4b890:	afb00018 */ 	sw	$s0,0x18($sp)
-/*    4b894:	afa60068 */ 	sw	$a2,0x68($sp)
-/*    4b898:	afa7006c */ 	sw	$a3,0x6c($sp)
-/*    4b89c:	0c012a18 */ 	jal	__osSiGetAccess
-/*    4b8a0:	24150002 */ 	addiu	$s5,$zero,0x2
-/*    4b8a4:	97a5006a */ 	lhu	$a1,0x6a($sp)
-/*    4b8a8:	3c1e8006 */ 	lui	$s8,%hi(var80060970)
-/*    4b8ac:	3c17800a */ 	lui	$s7,%hi(__osContLastCmd)
-/*    4b8b0:	3c148009 */ 	lui	$s4,%hi(__osPfsPifRam)
-/*    4b8b4:	000570c3 */ 	sra	$t6,$a1,0x3
-/*    4b8b8:	00057940 */ 	sll	$t7,$a1,0x5
-/*    4b8bc:	afaf0040 */ 	sw	$t7,0x40($sp)
-/*    4b8c0:	afae0044 */ 	sw	$t6,0x44($sp)
-/*    4b8c4:	26940a20 */ 	addiu	$s4,$s4,%lo(__osPfsPifRam)
-/*    4b8c8:	26f7c820 */ 	addiu	$s7,$s7,%lo(__osContLastCmd)
-/*    4b8cc:	27de0970 */ 	addiu	$s8,$s8,%lo(var80060970)
-.L0004b8d0:
-/*    4b8d0:	92f80000 */ 	lbu	$t8,0x0($s7)
-/*    4b8d4:	24010002 */ 	addiu	$at,$zero,0x2
-/*    4b8d8:	97a5006a */ 	lhu	$a1,0x6a($sp)
-/*    4b8dc:	17010003 */ 	bne	$t8,$at,.L0004b8ec
-/*    4b8e0:	02808025 */ 	or	$s0,$s4,$zero
-/*    4b8e4:	8fd90000 */ 	lw	$t9,0x0($s8)
-/*    4b8e8:	12390023 */ 	beq	$s1,$t9,.L0004b978
-.L0004b8ec:
-/*    4b8ec:	24080002 */ 	addiu	$t0,$zero,0x2
-/*    4b8f0:	a2e80000 */ 	sb	$t0,0x0($s7)
-/*    4b8f4:	afd10000 */ 	sw	$s1,0x0($s8)
-/*    4b8f8:	1a200010 */ 	blez	$s1,.L0004b93c
-/*    4b8fc:	00001025 */ 	or	$v0,$zero,$zero
-/*    4b900:	32240003 */ 	andi	$a0,$s1,0x3
-/*    4b904:	10800006 */ 	beqz	$a0,.L0004b920
-/*    4b908:	00801825 */ 	or	$v1,$a0,$zero
-.L0004b90c:
-/*    4b90c:	24420001 */ 	addiu	$v0,$v0,0x1
-/*    4b910:	a2000000 */ 	sb	$zero,0x0($s0)
-/*    4b914:	1462fffd */ 	bne	$v1,$v0,.L0004b90c
-/*    4b918:	26100001 */ 	addiu	$s0,$s0,0x1
-/*    4b91c:	10510007 */ 	beq	$v0,$s1,.L0004b93c
-.L0004b920:
-/*    4b920:	24420004 */ 	addiu	$v0,$v0,0x4
-/*    4b924:	a2000000 */ 	sb	$zero,0x0($s0)
-/*    4b928:	a2000001 */ 	sb	$zero,0x1($s0)
-/*    4b92c:	a2000002 */ 	sb	$zero,0x2($s0)
-/*    4b930:	a2000003 */ 	sb	$zero,0x3($s0)
-/*    4b934:	1451fffa */ 	bne	$v0,$s1,.L0004b920
-/*    4b938:	26100004 */ 	addiu	$s0,$s0,0x4
-.L0004b93c:
-/*    4b93c:	24090001 */ 	addiu	$t1,$zero,0x1
-/*    4b940:	ae89003c */ 	sw	$t1,0x3c($s4)
-/*    4b944:	240a00ff */ 	addiu	$t2,$zero,0xff
-/*    4b948:	240b0003 */ 	addiu	$t3,$zero,0x3
-/*    4b94c:	240c0021 */ 	addiu	$t4,$zero,0x21
-/*    4b950:	240d0002 */ 	addiu	$t5,$zero,0x2
-/*    4b954:	240e00ff */ 	addiu	$t6,$zero,0xff
-/*    4b958:	240f00fe */ 	addiu	$t7,$zero,0xfe
-/*    4b95c:	a20a0000 */ 	sb	$t2,0x0($s0)
-/*    4b960:	a20b0001 */ 	sb	$t3,0x1($s0)
-/*    4b964:	a20c0002 */ 	sb	$t4,0x2($s0)
-/*    4b968:	a20d0003 */ 	sb	$t5,0x3($s0)
-/*    4b96c:	a20e0026 */ 	sb	$t6,0x26($s0)
-/*    4b970:	10000002 */ 	b	.L0004b97c
-/*    4b974:	a20f0027 */ 	sb	$t7,0x27($s0)
-.L0004b978:
-/*    4b978:	02918021 */ 	addu	$s0,$s4,$s1
-.L0004b97c:
-/*    4b97c:	8fb80044 */ 	lw	$t8,0x44($sp)
-/*    4b980:	30a4ffff */ 	andi	$a0,$a1,0xffff
-/*    4b984:	0c014754 */ 	jal	__osContAddressCrc
-/*    4b988:	a2180004 */ 	sb	$t8,0x4($s0)
-/*    4b98c:	8fb90040 */ 	lw	$t9,0x40($sp)
-/*    4b990:	24040001 */ 	addiu	$a0,$zero,0x1
-/*    4b994:	02802825 */ 	or	$a1,$s4,$zero
-/*    4b998:	00594025 */ 	or	$t0,$v0,$t9
-/*    4b99c:	0c012a34 */ 	jal	__osSiRawStartDma
-/*    4b9a0:	a2080005 */ 	sb	$t0,0x5($s0)
-/*    4b9a4:	02c02025 */ 	or	$a0,$s6,$zero
-/*    4b9a8:	00002825 */ 	or	$a1,$zero,$zero
-/*    4b9ac:	0c0121bc */ 	jal	osRecvMesg
-/*    4b9b0:	24060001 */ 	addiu	$a2,$zero,0x1
-/*    4b9b4:	00002025 */ 	or	$a0,$zero,$zero
-/*    4b9b8:	0c012a34 */ 	jal	__osSiRawStartDma
-/*    4b9bc:	02802825 */ 	or	$a1,$s4,$zero
-/*    4b9c0:	02c02025 */ 	or	$a0,$s6,$zero
-/*    4b9c4:	00002825 */ 	or	$a1,$zero,$zero
-/*    4b9c8:	0c0121bc */ 	jal	osRecvMesg
-/*    4b9cc:	24060001 */ 	addiu	$a2,$zero,0x1
-/*    4b9d0:	92130002 */ 	lbu	$s3,0x2($s0)
-/*    4b9d4:	26120006 */ 	addiu	$s2,$s0,0x6
-/*    4b9d8:	326900c0 */ 	andi	$t1,$s3,0xc0
-/*    4b9dc:	00099903 */ 	sra	$s3,$t1,0x4
-/*    4b9e0:	56600014 */ 	bnezl	$s3,.L0004ba34
-/*    4b9e4:	24130001 */ 	addiu	$s3,$zero,0x1
-/*    4b9e8:	0c014788 */ 	jal	__osContDataCrc
-/*    4b9ec:	02402025 */ 	or	$a0,$s2,$zero
-/*    4b9f0:	920b0026 */ 	lbu	$t3,0x26($s0)
-/*    4b9f4:	02402025 */ 	or	$a0,$s2,$zero
-/*    4b9f8:	8fa5006c */ 	lw	$a1,0x6c($sp)
-/*    4b9fc:	11620008 */ 	beq	$t3,$v0,.L0004ba20
-/*    4ba00:	00000000 */ 	nop
-/*    4ba04:	02c02025 */ 	or	$a0,$s6,$zero
-/*    4ba08:	0c012ea4 */ 	jal	__osPfsGetStatus
-/*    4ba0c:	02202825 */ 	or	$a1,$s1,$zero
-/*    4ba10:	1440000d */ 	bnez	$v0,.L0004ba48
-/*    4ba14:	00409825 */ 	or	$s3,$v0,$zero
-/*    4ba18:	10000006 */ 	b	.L0004ba34
-/*    4ba1c:	24130004 */ 	addiu	$s3,$zero,0x4
-.L0004ba20:
-/*    4ba20:	0c012c5c */ 	jal	bcopy
-/*    4ba24:	24060020 */ 	addiu	$a2,$zero,0x20
-/*    4ba28:	10000003 */ 	b	.L0004ba38
-/*    4ba2c:	24010004 */ 	addiu	$at,$zero,0x4
-/*    4ba30:	24130001 */ 	addiu	$s3,$zero,0x1
-.L0004ba34:
-/*    4ba34:	24010004 */ 	addiu	$at,$zero,0x4
-.L0004ba38:
-/*    4ba38:	16610003 */ 	bne	$s3,$at,.L0004ba48
-/*    4ba3c:	2aa20000 */ 	slti	$v0,$s5,0x0
-/*    4ba40:	1040ffa3 */ 	beqz	$v0,.L0004b8d0
-/*    4ba44:	26b5ffff */ 	addiu	$s5,$s5,-1
-.L0004ba48:
-/*    4ba48:	0c012a29 */ 	jal	__osSiRelAccess
-/*    4ba4c:	00000000 */ 	nop
-/*    4ba50:	8fbf003c */ 	lw	$ra,0x3c($sp)
-/*    4ba54:	02601025 */ 	or	$v0,$s3,$zero
-/*    4ba58:	8fb30024 */ 	lw	$s3,0x24($sp)
-/*    4ba5c:	8fb00018 */ 	lw	$s0,0x18($sp)
-/*    4ba60:	8fb1001c */ 	lw	$s1,0x1c($sp)
-/*    4ba64:	8fb20020 */ 	lw	$s2,0x20($sp)
-/*    4ba68:	8fb40028 */ 	lw	$s4,0x28($sp)
-/*    4ba6c:	8fb5002c */ 	lw	$s5,0x2c($sp)
-/*    4ba70:	8fb60030 */ 	lw	$s6,0x30($sp)
-/*    4ba74:	8fb70034 */ 	lw	$s7,0x34($sp)
-/*    4ba78:	8fbe0038 */ 	lw	$s8,0x38($sp)
-/*    4ba7c:	03e00008 */ 	jr	$ra
-/*    4ba80:	27bd0060 */ 	addiu	$sp,$sp,0x60
-);
+s32 __osContRamRead(OSMesgQueue* ctrlrqueue, s32 channel, u16 addr, u8* data)
+{
+	s32 ret;
+	s32 i;
+	u8* bufptr;
+	s32 retryCount = 2;
+
+	__osSiGetAccess();
+
+	do {
+		bufptr = (u8*)&__osPfsPifRam;
+
+		if ((__osContLastCmd != 2) || (__osPfsLastChannel != channel)) {
+			__osContLastCmd = 2;
+			__osPfsLastChannel = channel;
+
+			for (i = 0; i < channel; i++) { *bufptr++ = 0; }
+
+			__osPfsPifRam.pifstatus = 1;
+			((__OSContRamReadFormat*)bufptr)->dummy = 255;
+			((__OSContRamReadFormat*)bufptr)->txsize = 3;
+			((__OSContRamReadFormat*)bufptr)->rxsize = 33;
+			((__OSContRamReadFormat*)bufptr)->cmd = CONT_CMD_READ_MEMPACK;
+			((__OSContRamReadFormat*)bufptr)->datacrc = 0xff;
+
+			bufptr[sizeof(__OSContRamReadFormat)] = CONT_CMD_END;
+		} else {
+			bufptr += channel;
+		}
+
+		((__OSContRamReadFormat*)bufptr)->hi = addr >> 3;
+		((__OSContRamReadFormat*)bufptr)->lo = (s8)(__osContAddressCrc(addr) | (addr << 5));
+
+		__osSiRawStartDma(OS_WRITE, &__osPfsPifRam);
+		osRecvMesg(ctrlrqueue, NULL, OS_MESG_BLOCK);
+
+		__osSiRawStartDma(OS_READ, &__osPfsPifRam);
+		osRecvMesg(ctrlrqueue, NULL, OS_MESG_BLOCK);
+
+		ret = (((__OSContRamReadFormat*)bufptr)->rxsize & 0xC0) >> 4;
+
+		if (!ret) {
+			if (((__OSContRamReadFormat*)bufptr)->datacrc != __osContDataCrc(bufptr + 6)) {
+				ret = __osPfsGetStatus(ctrlrqueue, channel);
+
+				if (ret) {
+					break;
+				}
+
+				ret = 4; // Retry
+			} else {
+				bcopy(bufptr + 6, data, BLOCKSIZE);
+			}
+		} else {
+			ret = 1; // Error
+		}
+
+		if (ret != 4) {
+			break;
+		}
+	} while (0 <= retryCount--);
+
+	__osSiRelAccess();
+
+	return ret;
+}
diff --git a/src/lib/ultra/io/contramwrite.c b/src/lib/ultra/io/contramwrite.c
index 86c572999..90647e322 100644
--- a/src/lib/ultra/io/contramwrite.c
+++ b/src/lib/ultra/io/contramwrite.c
@@ -38,12 +38,12 @@ glabel __osContRamWrite
 /*    4b688:	a7a60072 */ 	sh	$a2,0x72($sp)
 /*    4b68c:	0010c0c3 */ 	sra	$t8,$s0,0x3
 /*    4b690:	0010c940 */ 	sll	$t9,$s0,0x5
-/*    4b694:	3c178006 */ 	lui	$s7,%hi(var80060970)
+/*    4b694:	3c178006 */ 	lui	$s7,%hi(__osPfsLastChannel)
 /*    4b698:	3c16800a */ 	lui	$s6,%hi(__osContLastCmd)
 /*    4b69c:	3c138009 */ 	lui	$s3,%hi(__osPfsPifRam)
 /*    4b6a0:	26730a20 */ 	addiu	$s3,$s3,%lo(__osPfsPifRam)
 /*    4b6a4:	26d6c820 */ 	addiu	$s6,$s6,%lo(__osContLastCmd)
-/*    4b6a8:	26f70970 */ 	addiu	$s7,$s7,%lo(var80060970)
+/*    4b6a8:	26f70970 */ 	addiu	$s7,$s7,%lo(__osPfsLastChannel)
 /*    4b6ac:	afb90040 */ 	sw	$t9,0x40($sp)
 /*    4b6b0:	afb80044 */ 	sw	$t8,0x44($sp)
 /*    4b6b4:	241e0003 */ 	addiu	$s8,$zero,0x3