diff --git a/Source/HBIOS/cfg_MASTER.asm b/Source/HBIOS/cfg_MASTER.asm
index 5eb061f9..af7e7694 100644
--- a/Source/HBIOS/cfg_MASTER.asm
+++ b/Source/HBIOS/cfg_MASTER.asm
@@ -513,3 +513,7 @@ CHNATIVEEZ80	.EQU	FALSE		; CH376: DELEGATE USB DRIVERS TO EZ80'S FIRMWARE
 _CH376_DATA_PORT	.EQU	$FF88	; CH376: DATA PORT
 _CH376_COMMAND_PORT	.EQU	$FF89	; CH376: COMMAND PORT
 _USB_MODULE_LEDS	.EQU	$FF8A	; CH376: LED CONTROL PORT
+
+_CH376_DAT_PORT_ADDR	.EQU	_CH376_DATA_PORT
+_CH376_CMD_PORT_ADDR	.EQU	_CH376_COMMAND_PORT
+_USB_MOD_LEDS_ADDR	.EQU	_USB_MODULE_LEDS
diff --git a/Source/HBIOS/ch376-native/base-drv/ch376_init.c.s b/Source/HBIOS/ch376-native/base-drv/ch376_init.c.s
index ba6515a2..09682ce4 100644
--- a/Source/HBIOS/ch376-native/base-drv/ch376_init.c.s
+++ b/Source/HBIOS/ch376-native/base-drv/ch376_init.c.s
@@ -112,7 +112,7 @@ ch376_init_str_1:
 	DEFB $08
 	DEFM "*$"
 	DEFB $00
-;source-doc/base-drv/ch376_init.c:25: static void _chnative_init(bool forced) {
+;source-doc/base-drv/ch376_init.c:33: static void _chnative_init(bool forced) {
 ; ---------------------------------
 ; Function _chnative_init
 ; ---------------------------------
@@ -121,7 +121,7 @@ __chnative_init:
 	ld	ix,0
 	add	ix,sp
 	dec	sp
-;source-doc/base-drv/ch376_init.c:28: const uint8_t loop_counter = forced ? 40 : 5;
+;source-doc/base-drv/ch376_init.c:36: const uint8_t loop_counter = forced ? 40 : 5;
 	bit	0,(ix+4)
 	jr	Z,l__chnative_init_00113
 	ld	a,$28
@@ -130,146 +130,172 @@ l__chnative_init_00113:
 	ld	a,$05
 l__chnative_init_00114:
 	ld	(ix-1),a
-;source-doc/base-drv/ch376_init.c:30: print_string("\r\nCH376: *$");
+;source-doc/base-drv/ch376_init.c:38: print_string("\r\nCH376: IO=0x$");
 	ld	hl,ch376_init_str_2
 	call	_print_string
-;source-doc/base-drv/ch376_init.c:32: r     = wait_for_state(loop_counter, state, 1);
+;source-doc/base-drv/ch376_init.c:39: print_hex((uint8_t)&CH376_DAT_PORT_ADDR);
+	ld	l, +((_CH376_DAT_PORT_ADDR) & $FF)
+	call	_print_hex
+;source-doc/base-drv/ch376_init.c:40: print_string(comma_0_x_dollar);
+	ld	hl,_comma_0_x_dollar
+	call	_print_string
+;source-doc/base-drv/ch376_init.c:41: print_hex((uint8_t)&CH376_CMD_PORT_ADDR);
+	ld	l, +((_CH376_CMD_PORT_ADDR) & $FF)
+	call	_print_hex
+;source-doc/base-drv/ch376_init.c:42: print_string(comma_0_x_dollar);
+	ld	hl,_comma_0_x_dollar
+	call	_print_string
+;source-doc/base-drv/ch376_init.c:43: print_hex((uint8_t)&USB_MOD_LEDS_ADDR);
+	ld	l, +((_USB_MOD_LEDS_ADDR) & $FF)
+	call	_print_hex
+;source-doc/base-drv/ch376_init.c:44: print_string(" *$");
+	ld	hl,ch376_init_str_3
+	call	_print_string
+;source-doc/base-drv/ch376_init.c:46: r     = wait_for_state(loop_counter, state, 1);
 	ld	a,$01
 	push	af
 	inc	sp
 	ld	l,$00
 	ld	a,(ix-1)
 	call	_wait_for_state
-;source-doc/base-drv/ch376_init.c:33: state = r & 255;
-;source-doc/base-drv/ch376_init.c:35: print_string("\bPRESENT (VER $");
+;source-doc/base-drv/ch376_init.c:47: state = r & 255;
+;source-doc/base-drv/ch376_init.c:49: print_string("\bPRESENT (VER $");
 	push	de
-	ld	hl,ch376_init_str_3
+	ld	hl,ch376_init_str_4
 	call	_print_string
 	pop	de
-;source-doc/base-drv/ch376_init.c:37: r     = usb_init(state);
+;source-doc/base-drv/ch376_init.c:51: r     = usb_init(state);
 	ld	l, e
 	call	_usb_init
 	ex	de, hl
-;source-doc/base-drv/ch376_init.c:38: state = r & 255;
+;source-doc/base-drv/ch376_init.c:52: state = r & 255;
 	ld	c, e
-;source-doc/base-drv/ch376_init.c:39: if (state != 2) {
+;source-doc/base-drv/ch376_init.c:53: if (state != 2) {
 	ld	a, c
 	sub	$02
 	jr	Z,l__chnative_init_00102
-;source-doc/base-drv/ch376_init.c:40: print_string("\rCH376: $");
-	ld	hl,ch376_init_str_4
-	call	_print_string
-;source-doc/base-drv/ch376_init.c:41: print_string("VERSION FAILURE\r\n$");
+;source-doc/base-drv/ch376_init.c:54: print_string("\rCH376: $");
 	ld	hl,ch376_init_str_5
 	call	_print_string
-;source-doc/base-drv/ch376_init.c:42: return;
+;source-doc/base-drv/ch376_init.c:55: print_string("VERSION FAILURE\r\n$");
+	ld	hl,ch376_init_str_6
+	call	_print_string
+;source-doc/base-drv/ch376_init.c:56: return;
 	jr	l__chnative_init_00111
 l__chnative_init_00102:
-;source-doc/base-drv/ch376_init.c:45: print_hex(r >> 8);
+;source-doc/base-drv/ch376_init.c:59: print_hex(r >> 8);
 	push	bc
 	ld	l, d
 	call	_print_hex
-;source-doc/base-drv/ch376_init.c:46: print_string(ch376_driver_version);
+;source-doc/base-drv/ch376_init.c:60: print_string(ch376_driver_version);
 	ld	hl,_ch376_driver_version
 	call	_print_string
-;source-doc/base-drv/ch376_init.c:48: print_string("USB: *$");
-	ld	hl,ch376_init_str_6
+;source-doc/base-drv/ch376_init.c:62: print_string("USB: *$");
+	ld	hl,ch376_init_str_7
 	call	_print_string
 	pop	bc
-;source-doc/base-drv/ch376_init.c:50: r     = wait_for_state(loop_counter, state, 3);
+;source-doc/base-drv/ch376_init.c:64: r     = wait_for_state(loop_counter, state, 3);
 	ld	a,$03
 	push	af
 	inc	sp
 	ld	l, c
 	ld	a,(ix-1)
 	call	_wait_for_state
-;source-doc/base-drv/ch376_init.c:51: state = r & 255;
-;source-doc/base-drv/ch376_init.c:53: if (state == 2) {
+;source-doc/base-drv/ch376_init.c:65: state = r & 255;
+;source-doc/base-drv/ch376_init.c:67: if (state == 2) {
 	ld	a, e
 	sub	$02
 	jr	NZ,l__chnative_init_00104
-;source-doc/base-drv/ch376_init.c:54: print_string("\bDISCONNECTED$");
-	ld	hl,ch376_init_str_7
+;source-doc/base-drv/ch376_init.c:68: print_string("\bDISCONNECTED$");
+	ld	hl,ch376_init_str_8
 	call	_print_string
-;source-doc/base-drv/ch376_init.c:55: return;
+;source-doc/base-drv/ch376_init.c:69: return;
 	jr	l__chnative_init_00111
 l__chnative_init_00104:
-;source-doc/base-drv/ch376_init.c:58: print_string("\bCONNECTED$");
+;source-doc/base-drv/ch376_init.c:72: print_string("\bCONNECTED$");
 	push	de
-	ld	hl,ch376_init_str_8
+	ld	hl,ch376_init_str_9
 	call	_print_string
 	pop	de
-;source-doc/base-drv/ch376_init.c:61: r     = usb_init(state);
+;source-doc/base-drv/ch376_init.c:75: r     = usb_init(state);
 	ld	l, e
 	call	_usb_init
 	ex	de, hl
-;source-doc/base-drv/ch376_init.c:62: state = r & 255;
+;source-doc/base-drv/ch376_init.c:76: state = r & 255;
 	ld	c, e
-;source-doc/base-drv/ch376_init.c:64: for (uint8_t i = 0; i < loop_counter; i++) {
+;source-doc/base-drv/ch376_init.c:78: for (uint8_t i = 0; i < loop_counter; i++) {
 	ld	b,$00
 l__chnative_init_00109:
 	ld	a, b
 	sub	(ix-1)
 	jr	NC,l__chnative_init_00111
-;source-doc/base-drv/ch376_init.c:65: if (r >> 8 != 0)
+;source-doc/base-drv/ch376_init.c:79: if (r >> 8 != 0)
 	ld	a,$00
 	or	d
 	jr	NZ,l__chnative_init_00111
-;source-doc/base-drv/ch376_init.c:68: print_string(".$");
+;source-doc/base-drv/ch376_init.c:82: print_string(".$");
 	push	bc
-	ld	hl,ch376_init_str_9
+	ld	hl,ch376_init_str_10
 	call	_print_string
 	pop	bc
-;source-doc/base-drv/ch376_init.c:69: r     = usb_init(state);
+;source-doc/base-drv/ch376_init.c:83: r     = usb_init(state);
 	push	bc
 	ld	l, c
 	call	_usb_init
 	ex	de, hl
 	pop	bc
-;source-doc/base-drv/ch376_init.c:70: state = r & 255;
+;source-doc/base-drv/ch376_init.c:84: state = r & 255;
 	ld	c, e
-;source-doc/base-drv/ch376_init.c:64: for (uint8_t i = 0; i < loop_counter; i++) {
+;source-doc/base-drv/ch376_init.c:78: for (uint8_t i = 0; i < loop_counter; i++) {
 	inc	b
 	jr	l__chnative_init_00109
 l__chnative_init_00111:
-;source-doc/base-drv/ch376_init.c:72: }
+;source-doc/base-drv/ch376_init.c:86: }
 	inc	sp
 	pop	ix
 	ret
+_comma_0_x_dollar:
+	DEFB +$20
+	DEFB +$30
+	DEFB +$78
+	DEFB +$24
 ch376_init_str_2:
 	DEFB $0d
 	DEFB $0a
-	DEFM "CH376: *$"
+	DEFM "CH376: IO=0x$"
 	DEFB $00
 ch376_init_str_3:
+	DEFM " *$"
+	DEFB $00
+ch376_init_str_4:
 	DEFB $08
 	DEFM "PRESENT (VER $"
 	DEFB $00
-ch376_init_str_4:
+ch376_init_str_5:
 	DEFB $0d
 	DEFM "CH376: $"
 	DEFB $00
-ch376_init_str_5:
+ch376_init_str_6:
 	DEFM "VERSION FAILURE"
 	DEFB $0d
 	DEFB $0a
 	DEFM "$"
 	DEFB $00
-ch376_init_str_6:
+ch376_init_str_7:
 	DEFM "USB: *$"
 	DEFB $00
-ch376_init_str_7:
+ch376_init_str_8:
 	DEFB $08
 	DEFM "DISCONNECTED$"
 	DEFB $00
-ch376_init_str_8:
+ch376_init_str_9:
 	DEFB $08
 	DEFM "CONNECTED$"
 	DEFB $00
-ch376_init_str_9:
+ch376_init_str_10:
 	DEFM ".$"
 	DEFB $00
-;source-doc/base-drv/ch376_init.c:74: void chnative_init_force(void) { _chnative_init(true); }
+;source-doc/base-drv/ch376_init.c:88: void chnative_init_force(void) { _chnative_init(true); }
 ; ---------------------------------
 ; Function chnative_init_force
 ; ---------------------------------
@@ -280,7 +306,7 @@ _chnative_init_force:
 	call	__chnative_init
 	inc	sp
 	ret
-;source-doc/base-drv/ch376_init.c:76: void chnative_init(void) { _chnative_init(false); }
+;source-doc/base-drv/ch376_init.c:90: void chnative_init(void) { _chnative_init(false); }
 ; ---------------------------------
 ; Function chnative_init
 ; ---------------------------------
diff --git a/Source/HBIOS/ch376-native/source-doc/base-drv/ch376_init.c b/Source/HBIOS/ch376-native/source-doc/base-drv/ch376_init.c
index 65cfc43d..4a3dc18c 100644
--- a/Source/HBIOS/ch376-native/source-doc/base-drv/ch376_init.c
+++ b/Source/HBIOS/ch376-native/source-doc/base-drv/ch376_init.c
@@ -22,12 +22,26 @@ static uint16_t wait_for_state(const uint8_t loop_counter, uint8_t state, const
 
 extern const char ch376_driver_version[];
 
+extern uint8_t CH376_DAT_PORT_ADDR;
+extern uint8_t CH376_CMD_PORT_ADDR;
+extern uint8_t USB_MOD_LEDS_ADDR;
+
+// there is a weird bug with the compilier - somtimes string literals containing
+// a dollar sign -- the dollar sign is ignored!
+const char comma_0_x_dollar[] = {' ', '0', 'x', '$'};
+
 static void _chnative_init(bool forced) {
   uint8_t       state = 0;
   uint16_t      r;
   const uint8_t loop_counter = forced ? 40 : 5;
 
-  print_string("\r\nCH376: *$");
+  print_string("\r\nCH376: IO=0x$");
+  print_hex((uint8_t)&CH376_DAT_PORT_ADDR);
+  print_string(comma_0_x_dollar);
+  print_hex((uint8_t)&CH376_CMD_PORT_ADDR);
+  print_string(comma_0_x_dollar);
+  print_hex((uint8_t)&USB_MOD_LEDS_ADDR);
+  print_string(" *$");
 
   r     = wait_for_state(loop_counter, state, 1);
   state = r & 255;