diff --git a/second/bootinfo.c b/second/bootinfo.c
index e49a37a..8e65df5 100644
--- a/second/bootinfo.c
+++ b/second/bootinfo.c
@@ -221,7 +221,8 @@ void bootinfo_init(char* command_line,
 
 	boot_info.bi_mac.gmtbias = gmt_bias;
 
-	logical2physical(SCCRd, &boot_info.bi_mac.scc);
+	logical2physical(SCCRd, &boot_info.bi_mac.scc_read);
+	logical2physical(SCCWr, &boot_info.bi_mac.scc_write);
 	boot_info.bi_mac.timedbra = TimeDBRA;
 	boot_info.bi_mac.adbdelay = TimeVIADB;
 	boot_info.bi_mac.serialmf = 0;
@@ -487,8 +488,11 @@ set_kernel_bootinfo(char *dst)
 	l1 = boot_info.bi_mac.videological;
 	dst = add_v2_boot_record(dst, V2_BI_MAC_VLOGICAL, sizeof(l1), &l1);
 
-	l1 = boot_info.bi_mac.scc;
-	dst = add_v2_boot_record(dst, V2_BI_MAC_SCCBASE, sizeof(l1), &l1);
+	l1 = boot_info.bi_mac.scc_read;
+	dst = add_v2_boot_record(dst, V2_BI_MAC_SCCBASE_READ, sizeof(l1), &l1);
+
+	l1 = boot_info.bi_mac.scc_write;
+	dst = add_v2_boot_record(dst, V2_BI_MAC_SCCBASE_WRITE, sizeof(l1), &l1);
 
 	l1 = boot_info.bi_mac.boottime;
 	dst = add_v2_boot_record(dst, V2_BI_MAC_BTIME, sizeof(l1), &l1);
diff --git a/second/bootinfo.h b/second/bootinfo.h
index 25ec306..009bc17 100644
--- a/second/bootinfo.h
+++ b/second/bootinfo.h
@@ -37,7 +37,8 @@ struct bi_Macintosh
 	unsigned long gmtbias;
 	unsigned long bootver;
 	unsigned long videological;
-	unsigned long scc;
+	unsigned long scc_read;
+	unsigned long scc_write;
 	unsigned long id;
 	unsigned long memsize;
 	unsigned long serialmf;
@@ -279,12 +280,13 @@ struct bi2_record_list {
 #define V2_BI_MAC_VROW		0x8003	/* Mac video rowbytes */
 #define V2_BI_MAC_VDIM		0x8004	/* Mac video dimensions */
 #define V2_BI_MAC_VLOGICAL	0x8005	/* Mac video logical base */
-#define V2_BI_MAC_SCCBASE	0x8006	/* Mac SCC base address */
+#define V2_BI_MAC_SCCBASE_READ	0x8006	/* Mac SCC base address */
 #define V2_BI_MAC_BTIME		0x8007	/* Mac boot time */
 #define V2_BI_MAC_GMTBIAS	0x8008	/* Mac GMT timezone offset */
 #define V2_BI_MAC_MEMSIZE	0x8009	/* Mac RAM size (sanity check) */
 #define V2_BI_MAC_CPUID		0x800a	/* Mac CPU type (sanity check) */
 #define V2_BI_MAC_ROMBASE	0x800b	/* Mac system ROM base address */ 
+#define V2_BI_MAC_SCCBASE_WRITE	0x800c	/* Mac SCC base address */
 
     /*
      *  Macintosh hardware profile data - unused, see macintosh.h for 
diff --git a/second/lowmem.h b/second/lowmem.h
index f163157..25d2ba6 100644
--- a/second/lowmem.h
+++ b/second/lowmem.h
@@ -6,6 +6,7 @@
 
 #define VIA1Base	(*(unsigned long*)0x01D4)
 #define SCCRd		(*(unsigned long*)0x01d8)
+#define SCCWr		(*(unsigned long*)0x01dc)
 #define ROMBase		(*(short**)0x02ae)
 #define HWCfgFlags	(*(unsigned long*)0x0B22)
 #define SCSIBase	(*(unsigned long*)0x0C00)