diff --git a/blk/001 b/blk/001
index 202fd2b..a3fa89b 100644
--- a/blk/001
+++ b/blk/001
@@ -9,7 +9,7 @@ MASTER INDEX
 490 TRS-80 Recipe             520 Fonts
 550 TI-84+ Recipe             580 RC2014 Recipe
 620 Sega Master System Recipe
-
+650 AVR assembler
 
 
 
diff --git a/blk/650 b/blk/650
new file mode 100644
index 0000000..31f722d
--- /dev/null
+++ b/blk/650
@@ -0,0 +1 @@
+AVR assembler
diff --git a/blk/660 b/blk/660
new file mode 100644
index 0000000..a127da9
--- /dev/null
+++ b/blk/660
@@ -0,0 +1 @@
+1 5 LOADR+
diff --git a/blk/661 b/blk/661
new file mode 100644
index 0000000..18d4775
--- /dev/null
+++ b/blk/661
@@ -0,0 +1,8 @@
+VARIABLE ORG
+: SPLITB
+    256 /MOD SWAP
+;
+: PC H@ ORG @ ;
+( A, spits an assembled byte, A,, spits an assembled word
+  Both increase PC. To debug, change C, to .X )
+: A, C, ; : A,, SPLITB A, A, ;
diff --git a/blk/662 b/blk/662
new file mode 100644
index 0000000..32e32e6
--- /dev/null
+++ b/blk/662
@@ -0,0 +1,10 @@
+( 0000 000d dddd 0000 )
+: OPRd CREATE , DOES> @ SWAP 4 LSHIFT OR A,, ;
+0b1001010000000101 OPRd ASR,   0b1001010000000000 OPRd COM,
+0b1001010000001010 OPRd DEC,   0b1001010000000011 OPRd INC,
+0b1001001000000110 OPRd LAC,   0b1001001000000101 OPRd LAS,
+0b1001001000000111 OPRd LAT,
+0b1001010000000110 OPRd LSR,   0b1001010000000001 OPRd NEG,
+0b1001000000001111 OPRd POP,   0b1001001000001111 OPRd PUSH,
+0b1001010000000111 OPRd ROR,   0b1001010000000010 OPRd SWAP,
+0b1001001000000100 OPRd XCH,
diff --git a/blk/663 b/blk/663
new file mode 100644
index 0000000..5907a51
--- /dev/null
+++ b/blk/663
@@ -0,0 +1,10 @@
+( 0000 00rd dddd rrrr )
+: OPRdRr CREATE C, DOES> C@ ( rd rr op )
+    OVER 0x10 AND 3 RSHIFT OR ( rd rr op' )
+    2 PICK 0x10 AND 4 RSHIFT OR ( rd rr op' )
+    8 LSHIFT OR 0xff0f AND ( rd op' )
+    SWAP 0xf AND 4 LSHIFT OR A,, ;
+0x1c OPRdRr ADC,   0x0c OPRdRr ADD,    0x20 OPRdRr AND,
+0x14 OPRdRr CP,    0x04 OPRdRr CPC,    0x10 OPRdRr CPSE,
+0x24 OPRdRr EOR,   0x2c OPRdRr MOV,    0x9c OPRdRr MUL,
+0x28 OPRdRr OR,    0x08 OPRdRr SBC,    0x18 OPRdRr SUB,
diff --git a/blk/664 b/blk/664
new file mode 100644
index 0000000..ceda372
--- /dev/null
+++ b/blk/664
@@ -0,0 +1,7 @@
+( 0000 KKKK dddd KKKK )
+: OPRdK CREATE C, DOES> C@ ( rd K op )
+    OVER 0xf0 AND 4 RSHIFT OR ( rd K op' )
+    ROT 5 LSHIFT ROT 0x0f AND OR ( op' rdK ) A, A, ;
+0x70 OPRdK ANDI,   0x30 OPRdK CPI,     0x0e OPRdK LDI,
+0x60 OPRdK ORI,    0x40 OPRdK SBCI,    0x60 OPRdK SBR,
+0x50 OPRdK SUBI,
diff --git a/emul/avra.sh b/emul/avra.sh
new file mode 100755
index 0000000..fa3cb13
--- /dev/null
+++ b/emul/avra.sh
@@ -0,0 +1,2 @@
+#!/bin/sh
+echo -e "660 LOAD H@ 256 /MOD 2 PC! 2 PC! \n$(cat -)\nH@ 256 /MOD 2 PC! 2 PC! " | ./stage
diff --git a/emul/zasm.sh b/emul/zasm.sh
index 8a3903c..6ff130c 100755
--- a/emul/zasm.sh
+++ b/emul/zasm.sh
@@ -1,2 +1,2 @@
 #!/bin/sh
-echo "212 LOAD H@ 256 /MOD 2 PC! 2 PC! $(cat -) H@ 256 /MOD 2 PC! 2 PC!" | ./stage
+echo -e "212 LOAD\nH@ 256 /MOD 2 PC! 2 PC!\n$(cat -)\nH@ 256 /MOD 2 PC! 2 PC! " | ./stage