2 files changed, 5 insertions(+), 1 deletions(-)

M carrera/l.s
M pc/trap.c

@@ 807,6 807,8 @@ TEXT	uvst(SB), $-4		/* uvst(address, src) */
 TEXT	fwblock(SB), $-4	/* fwblock(void*port, void *block, csum) */
 	MOVW	4(FP), R2
 	MOVW	8(FP), R6
+	SLLV	$32, R6
+	SRLV	$32, R6		/* zero extend */
 
 	MOVW	$32, R4
 fwloop:


@@ 829,6 831,8 @@ fwloop:
 TEXT	frblock(SB), $-4	/* frblock(void*port, void *block, csum) */
 	MOVW	4(FP), R2
 	MOVW	8(FP), R6
+	SLLV	$32, R6
+	SRLV	$32, R6		/* zero extend */
 
 	MOVW	$32, R4
 frloop:

@@ 191,7 191,7 @@ trapinit(void)
 
 	/*
 	 *  Set up the second 8259 interrupt processor.
-	 *  Make 8259 interrupts start at CPU vector Int0vec.
+	 *  Make 8259 interrupts start at CPU vector Int1vec.
 	 *  Set the 8259 as master with level triggered
 	 *  input with fully nested interrupts.
 	 */