X-Git-Url: http://cloudbase.mooo.com/gitweb/avrcpm.git/blobdiff_plain/21c909d111de095a396f08de06b30d666f4ccf9f..28cf89bfbf775cb8cf82c545f9afa68a82259a09:/macros.inc

diff --git a/macros.inc b/macros.inc
index b109165..d1178b7 100644
--- a/macros.inc
+++ b/macros.inc
@@ -67,6 +67,14 @@
 	sbci    @0h, high(-@1)
 .endm
 
+;------------------------------------------------
+; sub 16 bit constant from register pair
+
+.macro	subiw
+	subi    @0l, low(@1)  
+	sbci    @0h, high(@1)
+.endm
+
 ;------------------------------------------------
 ; Move single bit between two registers
 ;
@@ -77,6 +85,21 @@
 	bld	@0,@1
 .endm
 
+;------------------------------------------------
+; 
+;
+;
+.macro  INTERRUPT
+  .set pos_ = PC
+  .org	@0			; vector address
+  .if abs(pos_ - PC) > 2048
+  	jmp     pos_
+  .else
+ 	rjmp    pos_		; jump to handler
+  .endif
+  .org	pos_			; restore PC
+.endm
+
 ;------------------------------------------------
 ; Print string.
 ;	printstring "String"