diff --git a/client/drivers/Makefile b/client/drivers/Makefile
index dc90cb4..adcdd32 100644
--- a/client/drivers/Makefile
+++ b/client/drivers/Makefile
@@ -24,19 +24,15 @@ all: $(DRIVERS)
 apple2prog.lib: a2print.o uthernet.o a2timer.o a2kernal.o a2input.o a2charconv.o cs8900a.o
 	ar65 a $@ $^
 
-c64rrnet.lib: c64print.o rr-net.o c64timer.o c64kernal.o c64inputs.o c64_disk_access.o c64charconv.o c64_vt100.o cs8900a.o
+c64rrnet.lib: c64print.o rr-net.o c64timer.o c64kernal.o c64inputs.o cbm_disk_access.o petscii_charconv.o c64_vt100.o cs8900a.o
 	ar65 a $@ $^
 
-c64wiznet.lib: w5100.o c64print.o c64timer.o  c64kernal.o c64inputs.o c64_disk_access.o c64charconv.o c64_vt100.o 
+c64wiznet.lib: w5100.o c64print.o c64timer.o  c64kernal.o c64inputs.o cbm_disk_access.o petscii_charconv.o c64_vt100.o 
 	ar65 a $@ $^
 
-vic20rrnet.lib: c64print.o vic20-rr-net.o vic20timer.o c64kernal.o c64inputs.o c64_disk_access.o c64charconv.o cs8900a.o
+vic20rrnet.lib: vic20print.o vic20-rr-net.o vic20timer.o cbm_disk_access.o petscii_charconv.o cs8900a.o
 	ar65 a $@ $^
 
-
-#	ar65 a $@ $^
-
-
 clean:
 	rm -f *.o
 	rm -f *.lib
diff --git a/client/drivers/c64timer.s b/client/drivers/c64timer.s
index b1919e4..cf3e4a3 100644
--- a/client/drivers/c64timer.s
+++ b/client/drivers/c64timer.s
@@ -7,7 +7,7 @@
 
 	.export timer_init
 	.export timer_read
-  
+  .export timer_seconds  ; this should return a single BCD byte (00..59) which is a count of seconds
 	.code
   
 ; initialize timers
@@ -28,8 +28,14 @@ timer_init:
 	lda #$c1		; timer B to count timer A underflows
 	sta $dd0f
 
+  lda #0
+  sta $dc08
+  sta $dc09
 	rts
 
+timer_seconds:
+  lda $dc09
+  rts
 
 ; return the current value
 timer_read:
diff --git a/client/drivers/c64timer_nb65.s b/client/drivers/c64timer_nb65.s
deleted file mode 100644
index 55f8751..0000000
--- a/client/drivers/c64timer_nb65.s
+++ /dev/null
@@ -1,76 +0,0 @@
-; timer routines
-;
-; the timer should be a 16-bit counter that's incremented by about
-; 1000 units per second. it doesn't have to be particularly accurate.
-; this C64 implementation requires the routine timer_vbl_handler be called 60 times per second
-; this is for use in the NB65 ROM, where we also install an IRQ handler
-; for normal userland programs where it is known what else is going on with the timer ,
-; use "c64timer.s" routines instead
-
-	.include "../inc/common.i"
-
-
-	.export timer_init
-	.export timer_read
-  .export timer_vbl_handler
-  
-	
-  .bss
-  current_time_value: .res 2
-  
-	.code
-
-;reset timer to 0
-;inputs: none
-;outputs: none
-timer_init:
-  ldax  #0
-  stax current_time_value
-	rts
-
-;read the current timer value 
-; inputs: none
-; outputs: AX = current timer value (roughly equal to number of milliseconds since the last call to 'timer_init')
-timer_read:
-  ldax  current_time_value
-  rts
-
-; tick over the current timer value - should be called 60 times per second
-; inputs: none
-; outputs: none (all registers preserved, by carry flag can be modified)
-timer_vbl_handler:
-  pha
-  lda $02A6   ;PAL/NTSC flag (0 = NTSC, 1 = PAL), 
-  beq @was_ntsc  
-  lda #$14  ;PAL = 50 HZ =~ 20 ms per 'tick'
-  bne :+
-@was_ntsc:  
-  lda #$11  ;NTSC = 60 HZ =~ 17 ms per 'tick' 
-: 
-  adc current_time_value
-  sta current_time_value
-  bcc :+
-  inc current_time_value+1
-:
-  pla
-  rts
-
-
-;-- LICENSE FOR c64timer_nb65.s --
-; The contents of this file are subject to the Mozilla Public License
-; Version 1.1 (the "License"); you may not use this file except in
-; compliance with the License. You may obtain a copy of the License at
-; http://www.mozilla.org/MPL/
-; 
-; Software distributed under the License is distributed on an "AS IS"
-; basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
-; License for the specific language governing rights and limitations
-; under the License.
-; 
-; The Original Code is ip65.
-; 
-; The Initial Developer of the Original Code is Jonno Downes,
-; jonno@jamtronix.com.
-; Portions created by the Initial Developer are Copyright (C) 2009
-; Jonno Downes. All Rights Reserved.  
-; -- LICENSE END --
diff --git a/client/drivers/c64_disk_access.s b/client/drivers/cbm_disk_access.s
similarity index 100%
rename from client/drivers/c64_disk_access.s
rename to client/drivers/cbm_disk_access.s
diff --git a/client/drivers/c64charconv.s b/client/drivers/petscii_charconv.s
similarity index 100%
rename from client/drivers/c64charconv.s
rename to client/drivers/petscii_charconv.s
diff --git a/client/drivers/vic20print.s b/client/drivers/vic20print.s
new file mode 100644
index 0000000..5578b49
--- /dev/null
+++ b/client/drivers/vic20print.s
@@ -0,0 +1,95 @@
+
+.export print_a
+.export print_cr
+.export cls
+.export beep
+.export print_a_inverse
+.import timer_read
+.exportzp screen_current_row
+.exportzp screen_current_col
+
+screen_current_row=$d6
+screen_current_col=$d3
+
+;use VIC 20 Kernel ROM function to print a character to the screen
+;inputs: A contains petscii value of character to print
+;outputs: none
+print_a = $ffd2
+
+.bss
+beep_timer: .res 1
+
+.code
+
+;use VIC 20 Kernel ROM function to move to a new line
+;inputs: none
+;outputs: none
+print_cr:
+  lda #13
+  jmp print_a
+
+;use VIC 20 Kernel ROM function to clear the screen
+;inputs: none
+;outputs: none
+cls:
+    lda #147  ; 'CLR/HOME'
+    jmp print_a
+
+;currently does nothing (should make a 'beep noise')
+;inputs: none
+;outputs: none
+beep:
+  lda $900e
+  ora #15
+  sta $900e	;set volume
+
+  ;turn on osc. 3
+  lda #$FF
+  sta $900c
+
+; pause for qtr second
+  jsr timer_read
+  stx beep_timer
+  inc beep_timer
+  inc beep_timer  
+:  
+  jsr timer_read
+  cpx beep_timer
+  bne :-
+
+  ;turn off osc. 3
+  lda #$00
+  sta $900c
+
+  rts
+
+  
+;print a single char in inverse text:
+print_a_inverse:
+  pha
+  lda #18 ;inverse mode on 
+  jsr print_a
+  pla
+  jsr print_a
+  lda #146 ;inverse mode off
+  jmp print_a
+
+
+
+; The contents of this file are subject to the Mozilla Public License
+; Version 1.1 (the "License"); you may not use this file except in
+; compliance with the License. You may obtain a copy of the License at
+; http://www.mozilla.org/MPL/
+; 
+; Software distributed under the License is distributed on an "AS IS"
+; basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
+; License for the specific language governing rights and limitations
+; under the License.
+; 
+; The Original Code is ip65.
+; 
+; The Initial Developer of the Original Code is Jonno Downes,
+; jonno@jamtronix.com.
+; Portions created by the Initial Developer are Copyright (C) 2009
+; Jonno Downes. All Rights Reserved.  
+; -- LICENSE END --
diff --git a/client/drivers/vic20timer.s b/client/drivers/vic20timer.s
index 34a24ed..87b397c 100644
--- a/client/drivers/vic20timer.s
+++ b/client/drivers/vic20timer.s
@@ -9,6 +9,7 @@
 
 	.export timer_init
 	.export timer_read
+  .export timer_seconds
   
   IRQ_VECTOR=$314
 
@@ -51,7 +52,6 @@ timer_read:
 timer_vbl_handler:
   pha
   lda #$11  ; 60 HZ =~ 17 ms per 'tick' 
-: 
   adc current_time_value
   sta current_time_value
   bcc :+
@@ -60,6 +60,9 @@ timer_vbl_handler:
   pla
   jmp jmp_old_handler
 
+timer_seconds:
+  lda #0
+  rts
 
 ;-- LICENSE FOR c64timer_nb65.s --
 ; The contents of this file are subject to the Mozilla Public License