diff --git a/spicode.s65 b/spicode.s65
index c759579..b43754c 100644
--- a/spicode.s65
+++ b/spicode.s65
@@ -133,8 +133,8 @@ kbinit:
 
 
 irq_on_shift_reg:
-    lda #'{'
-    jsr lcd::print_char
+    ; lda #'{'
+    ; jsr lcd::print_char
     lda kb::KB_IO + IO::SR
     sta key_read
     stz kb::KB_IO + IO::SR
@@ -147,7 +147,6 @@ irq_on_shift_reg:
     sta kb::KB_IO + IO::IER
     ; start timer
     lda #1
-    lda #$10 ; todo remove
     sta kb::KB_IO + IO::T2CH
     ; lda #'}'
     ; jsr lcd::print_char
@@ -184,31 +183,31 @@ irq_on_timer:
     rol  ; rotate carry into byte, rotate startbit into carry
     ; TODO byte is inverted, maybe consider wasting 256 bytes for a bit reverse lookup table?
     sta keycode
-    jsr lcd::print_char
-
     stz key_read
     stz key_read+1
 
-    lda #'>'
-    jsr lcd::print_char
+    Strf "kc:%x", out_str, keycode
+    PrintNC out_str
     rts
 
 key_read: .res 2
 keycode:  .res 1
 kb_irq1:
-    lda #'!'
-    jsr lcd::print_char
+    ; lda #'!'
+    ; jsr lcd::print_char
     jsr irq_on_shift_reg
-    lda #':'
-    jsr lcd::print_char
+    ; lda #':'
+    ; jsr lcd::print_char
     rts
 .byte '='
 kb_irq2:
-    lda #'?'
-    jsr lcd::print_char
+    ; lda #'?'
+    ; jsr lcd::print_char
     jsr irq_on_timer
     lda #';'
     jsr lcd::print_char
     rts
 .byte '@'
 
+out_str: .res 40
+
diff --git a/system/irq_handler.s65 b/system/irq_handler.s65
index 19d3831..005af9e 100644
--- a/system/irq_handler.s65
+++ b/system/irq_handler.s65
@@ -1,43 +1,43 @@
-.include "irq_handler.h65"
-.bss
+; .include "irq_handler.h65"
+; .bss
 
 
-.code
+; .code
 
-.proc register_via_handler
-.endproc
+; .proc register_via_handler
+; .endproc
 
-.proc remove_via_handler
-.endproc
+; .proc remove_via_handler
+; .endproc
 
-.proc main_handler
-    Print "Unknown IRQ"
-    rti
-.endproc
+; .proc main_handler
+;     Print "Unknown IRQ"
+;     rti
+; .endproc
 
-.zeropage
-tmp: .res 1
+; .zeropage
+; tmp: .res 1
 
-.macro VIAHandler via_addr, via_handlers_table
-    lda via_addr + IO::IFR
-    sta tmp
-    bbr7 tmp,@rts  ; irq
-    bbs0 tmp,@ca2
-    bbs1 tmp,@ca1
-    bbs2 tmp,@sr
-    bbs3 tmp,@cb2
-    bbs4 tmp,@cb1
-    bbs5 tmp,@t2
-    bbs6 tmp,@t1
-    ; TODO error, one should have been true
-    stp
-@rts:
-    rts
-@ca2:   jmp (via_handlers_table)
-@ca1:   jmp (via_handlers_table+2)
-@sr:    jmp (via_handlers_table+4)
-@cb2:   jmp (via_handlers_table+6)
-@cb1:   jmp (via_handlers_table+8)
-@t2:    jmp (via_handlers_table+10)
-@t1:    jmp (via_handlers_table+12)
-.endmacro
+; .macro VIAHandler via_addr, via_handlers_table
+;     lda via_addr + IO::IFR
+;     sta tmp
+;     bbr7 tmp,@rts  ; irq
+;     bbs0 tmp,@ca2
+;     bbs1 tmp,@ca1
+;     bbs2 tmp,@sr
+;     bbs3 tmp,@cb2
+;     bbs4 tmp,@cb1
+;     bbs5 tmp,@t2
+;     bbs6 tmp,@t1
+;     ; TODO error, one should have been true
+;     stp
+; @rts:
+;     rts
+; @ca2:   jmp (via_handlers_table)
+; @ca1:   jmp (via_handlers_table+2)
+; @sr:    jmp (via_handlers_table+4)
+; @cb2:   jmp (via_handlers_table+6)
+; @cb1:   jmp (via_handlers_table+8)
+; @t2:    jmp (via_handlers_table+10)
+; @t1:    jmp (via_handlers_table+12)
+; .endmacro