diff --git a/avr/usbload/main.c b/avr/usbload/main.c
index 9a2b3d2..d13088a 100644
--- a/avr/usbload/main.c
+++ b/avr/usbload/main.c
@@ -320,7 +320,8 @@ void test_crc(){
 int main(void)
 {
     uint8_t i;
-
+    uint8_t c;
+    
     uart_init();
     stdout = &uart_stdout;
 
@@ -404,6 +405,23 @@ int main(void)
 
         while (req_state != REQ_STATUS_AVR){
             usbPoll();
+            i = 20;
+            while (--i) {               /* fake USB disconnect for > 250 ms */
+                _delay_ms(100);
+            }
+            printf("Send IRQ\n");
+            snes_irq_lo();
+            snes_irq_on();
+
+            avr_bus_active();
+            c = sram_bulk_read();
+            snes_bus_active();
+            
+            snes_irq_off();
+            
+            sram_bulk_read_start(0x003000);
+            printf("Read 0x3000=%c\n",c);
+            
         }
     }
      
diff --git a/snes/irqtest/Makefile b/snes/irqtest/Makefile
index 5a8b43d..4a03b00 100644
--- a/snes/irqtest/Makefile
+++ b/snes/irqtest/Makefile
@@ -9,11 +9,15 @@ OBJS=irqtest.o
 APP=irqtest.smc
 GFX=
 
-all: clean $(APP)
+all: clean $(APP) check
 
 run:
 	zsnes $(APP)
 
+
+upload: smc
+	ucon64 --port=usb -xsnesram $(APP)
+
 linkfile:
 	echo "[objects]" > linkerfile.prj
 
@@ -21,8 +25,13 @@ linkfile:
 optixx.inc: optixx.pcx
 	wine tools/pcx2snes.exe optixx.pcx -b2 -nOptixx -ooptixx.inc
 
-check: 
+check:
 	ucon64 -chk $(APP)
+	rm -fv *.bak
+smc:
+	ucon64 -smc $(APP)
+	rm -fv *.bak
+
 
 %.o: %.asm
 	echo "$@" >> linkerfile.prj
diff --git a/snes/irqtest/header.inc b/snes/irqtest/header.inc
index 87e5874..769fa13 100644
--- a/snes/irqtest/header.inc
+++ b/snes/irqtest/header.inc
@@ -26,7 +26,7 @@
   LOROM
 
   CARTRIDGETYPE $00             ; $00 = ROM only, see WLA documentation for others
-  ROMSIZE $08                   ; $08 = 2 Mbits,  see WLA doc for more..
+  ROMSIZE $07                   ; $08 = 2 Mbits,  see WLA doc for more..
   SRAMSIZE $00                  ; No SRAM         see WLA doc for more..
   COUNTRY $02                   ; $01 = U.S.  $00 = Japan, that's all I know
   LICENSEECODE $00              ; Just use $00
diff --git a/snes/irqtest/irqtest.asm b/snes/irqtest/irqtest.asm
index dd23e82..c1aa9ee 100644
--- a/snes/irqtest/irqtest.asm
+++ b/snes/irqtest/irqtest.asm
@@ -47,8 +47,6 @@ Start_do:
    
     ; Setup Video modes and other stuff, then turn on the screen
     jsr SetupVideo
-
-    prints "Init done"
     
     lda #$81
     sta $4200
@@ -101,17 +99,13 @@ SetupVideo:
 ;.SECTION "IRQHandlers" 
 
 COPHandler:
-    prints "COPHandler"
     rti
 
 BRKHandler:
-    prints "BRKHandler"
     rti
 ABRTHandler:
-    prints "ABRTHandler"
     rti
 NMIHandler:
-    prints "NMIHandler"
     rti
 
 IRQHandler:
@@ -119,7 +113,13 @@ IRQHandler:
     lda PalNum
     sta $2122
     sta $2122
-    prints "IRQHandler"
+    
+    lda #65
+    sta $3000
+idle:    
+    lda $3001
+    
+    
     rti