diff --git a/cpu.c b/cpu.c
index 8c88959..c0e3877 100644
--- a/cpu.c
+++ b/cpu.c
@@ -206,18 +206,6 @@ asl(uint8_t arg)
 	STATUS_UPDATE_NEGATIVE(regs.a);
 }
 
-static void
-bbr(uint8_t arg)
-{
-/* TODO: complete this */
-}
-
-static void
-bbs(uint8_t arg)
-{
-/* TODO: complete this */
-}
-
 static void
 bcc(uint8_t arg)
 {
@@ -268,12 +256,6 @@ bpl(uint8_t arg)
 		regs.pc += arg;
 }
 
-static void
-bra(uint8_t arg)
-{
-/* TODO: complete this */
-}
-
 static void
 brk(void)
 {
@@ -527,12 +509,6 @@ ply(uint8_t arg)
 /* TODO: complete this */
 }
 
-static void
-rmb(uint8_t arg)
-{
-/* TODO: complete this */
-}
-
 static void
 rol(uint8_t arg)
 {
@@ -567,25 +543,19 @@ sbc(uint8_t arg)
 static void
 sec(uint8_t arg)
 {
-/* TODO: complete this */
+	regs.status.carry = 1;
 }
 
 static void
 sed(uint8_t arg)
 {
-/* TODO: complete this */
+	regs.status.decimal_mode = 1;
 }
 
 static void
 sei(uint8_t arg)
 {
-/* TODO: complete this */
-}
-
-static void
-smb(uint8_t arg)
-{
-/* TODO: complete this */
+	regs.status.interrupt_disable = 1;
 }
 
 static void
@@ -594,12 +564,6 @@ sta(uint8_t arg)
 /* TODO: complete this */
 }
 
-static void
-stp(uint8_t arg)
-{
-/* TODO: complete this */
-}
-
 static void
 stx(uint8_t arg)
 {
@@ -612,12 +576,6 @@ sty(uint8_t arg)
 /* TODO: complete this */
 }
 
-static void
-stz(uint8_t arg)
-{
-/* TODO: complete this */
-}
-
 static void
 tax(void)
 {
@@ -633,18 +591,6 @@ tay(uint8_t arg)
 /* TODO: complete this */
 }
 
-static void
-trb(uint8_t arg)
-{
-/* TODO: complete this */
-}
-
-static void
-tsb(uint8_t arg)
-{
-/* TODO: complete this */
-}
-
 static void
 tsx(uint8_t arg)
 {
@@ -669,18 +615,6 @@ tya(uint8_t arg)
 /* TODO: complete this */
 }
 
-static void
-wai(uint8_t arg)
-{
-/* TODO: complete this */
-}
-
-static void
-unp(uint8_t arg)
-{
-/* TODO: complete this */
-}
-
 static void
 interpret(void)
 {
@@ -784,70 +718,6 @@ interpret(void)
 			asl(opcode_arg(AM_ABS_X));
 			cycles += 6;
 			break;
-		case 0x0f:
-			bbr(opcode_arg(AM_REL));
-			cycles += 4;
-			break;
-		case 0x1f:
-			bbr(opcode_arg(AM_REL));
-			cycles += 4;
-			break;
-		case 0x2f:
-			bbr(opcode_arg(AM_REL));
-			cycles += 4;
-			break;
-		case 0x3f:
-			bbr(opcode_arg(AM_REL));
-			cycles += 4;
-			break;
-		case 0x4f:
-			bbr(opcode_arg(AM_REL));
-			cycles += 4;
-			break;
-		case 0x5f:
-			bbr(opcode_arg(AM_REL));
-			cycles += 4;
-			break;
-		case 0x6f:
-			bbr(opcode_arg(AM_REL));
-			cycles += 4;
-			break;
-		case 0x7f:
-			bbr(opcode_arg(AM_REL));
-			cycles += 4;
-			break;
-		case 0x8f:
-			bbs(opcode_arg(AM_REL));
-			cycles += 4;
-			break;
-		case 0x9f:
-			bbs(opcode_arg(AM_REL));
-			cycles += 4;
-			break;
-		case 0xaf:
-			bbs(opcode_arg(AM_REL));
-			cycles += 4;
-			break;
-		case 0xbf:
-			bbs(opcode_arg(AM_REL));
-			cycles += 4;
-			break;
-		case 0xcf:
-			bbs(opcode_arg(AM_REL));
-			cycles += 4;
-			break;
-		case 0xdf:
-			bbs(opcode_arg(AM_REL));
-			cycles += 4;
-			break;
-		case 0xef:
-			bbs(opcode_arg(AM_REL));
-			cycles += 4;
-			break;
-		case 0xff:
-			bbs(opcode_arg(AM_REL));
-			cycles += 4;
-			break;
 		case 0x90:
 			bcc(opcode_arg(AM_IMM));
 			cycles += 2;
@@ -892,10 +762,6 @@ interpret(void)
 			bpl(opcode_arg(AM_IMM));
 			cycles += 2;
 			break;
-		case 0x80:
-			bra(opcode_arg(AM_IMM));
-			cycles += 3;
-			break;
 		case 0x00:
 			brk();
 			cycles += 7;
@@ -1256,38 +1122,6 @@ interpret(void)
 			ply(opcode_arg(AM_ACC));
 			cycles += 4;
 			break;
-		case 0x07:
-			rmb(opcode_arg(AM_REL));
-			cycles += 5;
-			break;
-		case 0x17:
-			rmb(opcode_arg(AM_REL));
-			cycles += 5;
-			break;
-		case 0x27:
-			rmb(opcode_arg(AM_REL));
-			cycles += 5;
-			break;
-		case 0x37:
-			rmb(opcode_arg(AM_REL));
-			cycles += 5;
-			break;
-		case 0x47:
-			rmb(opcode_arg(AM_REL));
-			cycles += 5;
-			break;
-		case 0x57:
-			rmb(opcode_arg(AM_REL));
-			cycles += 5;
-			break;
-		case 0x67:
-			rmb(opcode_arg(AM_REL));
-			cycles += 5;
-			break;
-		case 0x77:
-			rmb(opcode_arg(AM_REL));
-			cycles += 5;
-			break;
 		case 0x2a:
 			rol(opcode_arg(AM_ACC));
 			cycles += 2;
@@ -1384,38 +1218,6 @@ interpret(void)
 			sei(opcode_arg(AM_ACC));
 			cycles += 2;
 			break;
-		case 0x87:
-			smb(opcode_arg(AM_REL));
-			cycles += 5;
-			break;
-		case 0x97:
-			smb(opcode_arg(AM_REL));
-			cycles += 5;
-			break;
-		case 0xa7:
-			smb(opcode_arg(AM_REL));
-			cycles += 5;
-			break;
-		case 0xb7:
-			smb(opcode_arg(AM_REL));
-			cycles += 5;
-			break;
-		case 0xc7:
-			smb(opcode_arg(AM_REL));
-			cycles += 5;
-			break;
-		case 0xd7:
-			smb(opcode_arg(AM_REL));
-			cycles += 5;
-			break;
-		case 0xe7:
-			smb(opcode_arg(AM_REL));
-			cycles += 5;
-			break;
-		case 0xf7:
-			smb(opcode_arg(AM_REL));
-			cycles += 5;
-			break;
 		case 0x85:
 			sta(opcode_arg(AM_ZP));
 			cycles += 4;
@@ -1448,10 +1250,6 @@ interpret(void)
 			sta(opcode_arg(AM_IND_Y));
 			cycles += 7;
 			break;
-		case 0xdb:
-			stp(opcode_arg(AM_ACC));
-			cycles += 2;
-			break;
 		case 0x86:
 			stx(opcode_arg(AM_ZP));
 			cycles += 4;
@@ -1476,22 +1274,6 @@ interpret(void)
 			sty(opcode_arg(AM_ABS));
 			cycles += 5;
 			break;
-		case 0x64:
-			stz(opcode_arg(AM_ZP));
-			cycles += 4;
-			break;
-		case 0x74:
-			stz(opcode_arg(AM_ZP_X));
-			cycles += 5;
-			break;
-		case 0x9c:
-			stz(opcode_arg(AM_ABS));
-			cycles += 5;
-			break;
-		case 0x9e:
-			stz(opcode_arg(AM_ABS_X));
-			cycles += 6;
-			break;
 		case 0xaa:
 			tax();
 			cycles += 2;
@@ -1500,22 +1282,6 @@ interpret(void)
 			tay(opcode_arg(AM_ACC));
 			cycles += 2;
 			break;
-		case 0x14:
-			trb(opcode_arg(AM_ZP));
-			cycles += 5;
-			break;
-		case 0x1c:
-			trb(opcode_arg(AM_ABS));
-			cycles += 6;
-			break;
-		case 0x04:
-			tsb(opcode_arg(AM_ZP));
-			cycles += 5;
-			break;
-		case 0x0c:
-			tsb(opcode_arg(AM_ABS));
-			cycles += 6;
-			break;
 		case 0xba:
 			tsx(opcode_arg(AM_ACC));
 			cycles += 2;
@@ -1532,186 +1298,6 @@ interpret(void)
 			tya(opcode_arg(AM_ACC));
 			cycles += 2;
 			break;
-		case 0xcb:
-			wai(opcode_arg(AM_ACC));
-			cycles += 5;
-			break;
-		case 0x03:
-			unp(opcode_arg(AM_ACC));
-			cycles += 1;
-			break;
-		case 0x0b:
-			unp(opcode_arg(AM_ACC));
-			cycles += 1;
-			break;
-		case 0x13:
-			unp(opcode_arg(AM_ACC));
-			cycles += 1;
-			break;
-		case 0x1b:
-			unp(opcode_arg(AM_ACC));
-			cycles += 1;
-			break;
-		case 0x23:
-			unp(opcode_arg(AM_ACC));
-			cycles += 1;
-			break;
-		case 0x2b:
-			unp(opcode_arg(AM_ACC));
-			cycles += 1;
-			break;
-		case 0x33:
-			unp(opcode_arg(AM_ACC));
-			cycles += 1;
-			break;
-		case 0x3b:
-			unp(opcode_arg(AM_ACC));
-			cycles += 1;
-			break;
-		case 0x43:
-			unp(opcode_arg(AM_ACC));
-			cycles += 1;
-			break;
-		case 0x4b:
-			unp(opcode_arg(AM_ACC));
-			cycles += 1;
-			break;
-		case 0x53:
-			unp(opcode_arg(AM_ACC));
-			cycles += 1;
-			break;
-		case 0x5b:
-			unp(opcode_arg(AM_ACC));
-			cycles += 1;
-			break;
-		case 0x63:
-			unp(opcode_arg(AM_ACC));
-			cycles += 1;
-			break;
-		case 0x6b:
-			unp(opcode_arg(AM_ACC));
-			cycles += 1;
-			break;
-		case 0x73:
-			unp(opcode_arg(AM_ACC));
-			cycles += 1;
-			break;
-		case 0x7b:
-			unp(opcode_arg(AM_ACC));
-			cycles += 1;
-			break;
-		case 0x83:
-			unp(opcode_arg(AM_ACC));
-			cycles += 1;
-			break;
-		case 0x8b:
-			unp(opcode_arg(AM_ACC));
-			cycles += 1;
-			break;
-		case 0x93:
-			unp(opcode_arg(AM_ACC));
-			cycles += 1;
-			break;
-		case 0x9b:
-			unp(opcode_arg(AM_ACC));
-			cycles += 1;
-			break;
-		case 0xa3:
-			unp(opcode_arg(AM_ACC));
-			cycles += 1;
-			break;
-		case 0xab:
-			unp(opcode_arg(AM_ACC));
-			cycles += 1;
-			break;
-		case 0xb3:
-			unp(opcode_arg(AM_ACC));
-			cycles += 1;
-			break;
-		case 0xbb:
-			unp(opcode_arg(AM_ACC));
-			cycles += 1;
-			break;
-		case 0xc3:
-			unp(opcode_arg(AM_ACC));
-			cycles += 1;
-			break;
-		case 0xd3:
-			unp(opcode_arg(AM_ACC));
-			cycles += 1;
-			break;
-		case 0xe3:
-			unp(opcode_arg(AM_ACC));
-			cycles += 1;
-			break;
-		case 0xeb:
-			unp(opcode_arg(AM_ACC));
-			cycles += 1;
-			break;
-		case 0xf3:
-			unp(opcode_arg(AM_ACC));
-			cycles += 1;
-			break;
-		case 0xfb:
-			unp(opcode_arg(AM_ACC));
-			cycles += 1;
-			break;
-		case 0x02:
-			unp(opcode_arg(AM_IMM));
-			cycles += 2;
-			break;
-		case 0x22:
-			unp(opcode_arg(AM_IMM));
-			cycles += 2;
-			break;
-		case 0x42:
-			unp(opcode_arg(AM_IMM));
-			cycles += 2;
-			break;
-		case 0x62:
-			unp(opcode_arg(AM_IMM));
-			cycles += 2;
-			break;
-		case 0x82:
-			unp(opcode_arg(AM_IMM));
-			cycles += 2;
-			break;
-		case 0xc2:
-			unp(opcode_arg(AM_IMM));
-			cycles += 2;
-			break;
-		case 0xe2:
-			unp(opcode_arg(AM_IMM));
-			cycles += 2;
-			break;
-		case 0x44:
-			unp(opcode_arg(AM_ZP));
-			cycles += 3;
-			break;
-		case 0x54:
-			unp(opcode_arg(AM_ZP_X));
-			cycles += 4;
-			break;
-		case 0xd4:
-			unp(opcode_arg(AM_ZP_X));
-			cycles += 4;
-			break;
-		case 0xf4:
-			unp(opcode_arg(AM_ZP_X));
-			cycles += 4;
-			break;
-		case 0x5c:
-			unp(opcode_arg(AM_ABS));
-			cycles += 8;
-			break;
-		case 0xdc:
-			unp(opcode_arg(AM_ABS_X));
-			cycles += 4;
-			break;
-		case 0xfc:
-			unp(opcode_arg(AM_ABS_X));
-			cycles += 4;
-			break;
 		default:
 			printf("opcode $%02X not implemented\n", opcode);
 			break;