diff --git a/Source/HBIOS/ch376-native/base-drv.s b/Source/HBIOS/ch376-native/base-drv.s
index fb66e985..ed11de0a 100644
--- a/Source/HBIOS/ch376-native/base-drv.s
+++ b/Source/HBIOS/ch376-native/base-drv.s
@@ -1,5 +1,6 @@
 ; Generated File -- not to be modify directly
 #include "ch376-native/base-drv/ch376.c.s"
+#include "ch376-native/base-drv/ch376_init.c.s"
 #include "ch376-native/base-drv/class_hub.c.s"
 #include "ch376-native/base-drv/critical-section.c.s"
 #include "ch376-native/base-drv/dev_transfers.c.s"
@@ -9,6 +10,6 @@
 #include "ch376-native/base-drv/protocol.c.s"
 #include "ch376-native/base-drv/transfers.c.s"
 #include "ch376-native/base-drv/usb-base-drv.c.s"
-#include "ch376-native/base-drv/usb-init.c.s"
+#include "ch376-native/base-drv/usb_init.c.s"
 #include "ch376-native/base-drv/usb_state.c.s"
 #include "ch376-native/base-drv/work-area.c.s"
diff --git a/Source/HBIOS/ch376-native/base-drv/ch376_init.c.s b/Source/HBIOS/ch376-native/base-drv/ch376_init.c.s
new file mode 100644
index 00000000..2081c4db
--- /dev/null
+++ b/Source/HBIOS/ch376-native/base-drv/ch376_init.c.s
@@ -0,0 +1,302 @@
+;
+; Generated from source-doc/base-drv/ch376_init.c.asm -- not to be modify directly
+;
+; 
+;--------------------------------------------------------
+; File Created by SDCC : free open source ISO C Compiler
+; Version 4.5.0 #15248 (Linux)
+;--------------------------------------------------------
+; Processed by Z88DK
+;--------------------------------------------------------
+	
+
+;--------------------------------------------------------
+; Public variables in this module
+;--------------------------------------------------------
+;--------------------------------------------------------
+; Externals used
+;--------------------------------------------------------
+;--------------------------------------------------------
+; special function registers
+;--------------------------------------------------------
+;--------------------------------------------------------
+; ram data
+;--------------------------------------------------------
+;--------------------------------------------------------
+; ram data
+;--------------------------------------------------------
+	
+#IF 0
+	
+; .area _INITIALIZED removed by z88dk
+	
+	
+#ENDIF
+	
+;--------------------------------------------------------
+; absolute external ram data
+;--------------------------------------------------------
+;--------------------------------------------------------
+; global & static initialisations
+;--------------------------------------------------------
+;--------------------------------------------------------
+; Home
+;--------------------------------------------------------
+;--------------------------------------------------------
+; code
+;--------------------------------------------------------
+;source-doc/base-drv/ch376_init.c:4: static uint16_t wait_for_state(const uint8_t loop_counter, uint8_t state, const uint8_t desired_state) __sdcccall(1) {
+; ---------------------------------
+; Function wait_for_state
+; ---------------------------------
+_wait_for_state:
+	push	ix
+	ld	ix,0
+	add	ix,sp
+	dec	sp
+	ld	(ix-1),a
+	ld	b, l
+;source-doc/base-drv/ch376_init.c:5: uint16_t r = state;
+	ld	e, b
+;source-doc/base-drv/ch376_init.c:7: for (uint8_t i = 0; i < loop_counter; i++) {
+	ld	d,0x00
+	ld	c,d
+l_wait_for_state_00108:
+	ld	a, c
+	sub	(ix-1)
+	jr	NC,l_wait_for_state_00106
+;source-doc/base-drv/ch376_init.c:8: if (state == desired_state)
+	ld	a,(ix+4)
+	sub	b
+	jr	Z,l_wait_for_state_00106
+;source-doc/base-drv/ch376_init.c:11: if (i & 1)
+	bit	0, c
+	jr	Z,l_wait_for_state_00104
+;source-doc/base-drv/ch376_init.c:12: print_string("\b $");
+	push	bc
+	ld	hl,ch376_init_str_0
+	call	_print_string
+	pop	bc
+	jr	l_wait_for_state_00105
+l_wait_for_state_00104:
+;source-doc/base-drv/ch376_init.c:14: print_string("\b*$");
+	push	bc
+	ld	hl,ch376_init_str_1
+	call	_print_string
+	pop	bc
+l_wait_for_state_00105:
+;source-doc/base-drv/ch376_init.c:16: r     = usb_init(state);
+	push	bc
+	push	bc
+	inc	sp
+	call	_usb_init
+	inc	sp
+	ex	de, hl
+	pop	bc
+;source-doc/base-drv/ch376_init.c:17: state = r & 255;
+	ld	b, e
+;source-doc/base-drv/ch376_init.c:7: for (uint8_t i = 0; i < loop_counter; i++) {
+	inc	c
+	jr	l_wait_for_state_00108
+l_wait_for_state_00106:
+;source-doc/base-drv/ch376_init.c:20: return r;
+;source-doc/base-drv/ch376_init.c:21: }
+	inc	sp
+	pop	ix
+	pop	hl
+	inc	sp
+	jp	(hl)
+ch376_init_str_0:
+	DEFB 0x08
+	DEFM " $"
+	DEFB 0x00
+ch376_init_str_1:
+	DEFB 0x08
+	DEFM "*$"
+	DEFB 0x00
+;source-doc/base-drv/ch376_init.c:23: static void _chnative_init(bool forced) {
+; ---------------------------------
+; Function _chnative_init
+; ---------------------------------
+__chnative_init:
+	push	ix
+	ld	ix,0
+	add	ix,sp
+	dec	sp
+;source-doc/base-drv/ch376_init.c:26: const uint8_t loop_counter = forced ? 40 : 5;
+	bit	0,(ix+4)
+	jr	Z,l__chnative_init_00113
+	ld	a,0x28
+	jr	l__chnative_init_00114
+l__chnative_init_00113:
+	ld	a,0x05
+l__chnative_init_00114:
+	ld	(ix-1),a
+;source-doc/base-drv/ch376_init.c:28: print_string("\r\nCH376: *$");
+	ld	hl,ch376_init_str_2
+	call	_print_string
+;source-doc/base-drv/ch376_init.c:30: r     = wait_for_state(loop_counter, state, 1);
+	ld	a,0x01
+	push	af
+	inc	sp
+	ld	l,0x00
+	ld	a,(ix-1)
+	call	_wait_for_state
+	ld	b, e
+;source-doc/base-drv/ch376_init.c:31: state = r & 255;
+;source-doc/base-drv/ch376_init.c:33: print_string("\bPRESENT (VER $");
+	push	bc
+	ld	hl,ch376_init_str_3
+	call	_print_string
+;source-doc/base-drv/ch376_init.c:35: r     = usb_init(state);
+	inc	sp
+	call	_usb_init
+	inc	sp
+	ex	de, hl
+;source-doc/base-drv/ch376_init.c:36: state = r & 255;
+	ld	c, e
+;source-doc/base-drv/ch376_init.c:37: if (state != 2) {
+	ld	a, c
+	sub	0x02
+	jr	Z,l__chnative_init_00102
+;source-doc/base-drv/ch376_init.c:38: print_string("\rCH376: $");
+	ld	hl,ch376_init_str_4
+	call	_print_string
+;source-doc/base-drv/ch376_init.c:39: print_string("VERSION FAILURE\r\n$");
+	ld	hl,ch376_init_str_5
+	call	_print_string
+;source-doc/base-drv/ch376_init.c:40: return;
+	jr	l__chnative_init_00111
+l__chnative_init_00102:
+;source-doc/base-drv/ch376_init.c:43: print_hex(r >> 8);
+	push	bc
+	ld	l, d
+	call	_print_hex
+;source-doc/base-drv/ch376_init.c:44: print_string("); $");
+	ld	hl,ch376_init_str_6
+	call	_print_string
+;source-doc/base-drv/ch376_init.c:46: print_string("USB: *$");
+	ld	hl,ch376_init_str_7
+	call	_print_string
+	pop	bc
+;source-doc/base-drv/ch376_init.c:48: r     = wait_for_state(loop_counter, state, 3);
+	ld	a,0x03
+	push	af
+	inc	sp
+	ld	l, c
+	ld	a,(ix-1)
+	call	_wait_for_state
+	ld	b, e
+;source-doc/base-drv/ch376_init.c:49: state = r & 255;
+;source-doc/base-drv/ch376_init.c:51: if (state == 2) {
+	ld	a, b
+	sub	0x02
+	jr	NZ,l__chnative_init_00104
+;source-doc/base-drv/ch376_init.c:52: print_string("\bDISCONNECTED$");
+	ld	hl,ch376_init_str_8
+	call	_print_string
+;source-doc/base-drv/ch376_init.c:53: return;
+	jr	l__chnative_init_00111
+l__chnative_init_00104:
+;source-doc/base-drv/ch376_init.c:56: print_string("\bCONNECTED$");
+	push	bc
+	ld	hl,ch376_init_str_9
+	call	_print_string
+;source-doc/base-drv/ch376_init.c:59: r     = usb_init(state);
+	inc	sp
+	call	_usb_init
+	inc	sp
+	ex	de, hl
+;source-doc/base-drv/ch376_init.c:60: state = r & 255;
+	ld	b, e
+;source-doc/base-drv/ch376_init.c:62: for (uint8_t i = 0; i < loop_counter; i++) {
+	ld	c,0x00
+l__chnative_init_00109:
+	ld	a, c
+	sub	(ix-1)
+	jr	NC,l__chnative_init_00111
+;source-doc/base-drv/ch376_init.c:63: if (r >> 8 != 0)
+	ld	a,0x00
+	or	d
+	jr	NZ,l__chnative_init_00111
+;source-doc/base-drv/ch376_init.c:66: print_string(".$");
+	push	bc
+	ld	hl,ch376_init_str_10
+	call	_print_string
+	pop	bc
+;source-doc/base-drv/ch376_init.c:67: r     = usb_init(state);
+	push	bc
+	push	bc
+	inc	sp
+	call	_usb_init
+	inc	sp
+	ex	de, hl
+	pop	bc
+;source-doc/base-drv/ch376_init.c:68: state = r & 255;
+	ld	b, e
+;source-doc/base-drv/ch376_init.c:62: for (uint8_t i = 0; i < loop_counter; i++) {
+	inc	c
+	jr	l__chnative_init_00109
+l__chnative_init_00111:
+;source-doc/base-drv/ch376_init.c:70: }
+	inc	sp
+	pop	ix
+	ret
+ch376_init_str_2:
+	DEFB 0x0d
+	DEFB 0x0a
+	DEFM "CH376: *$"
+	DEFB 0x00
+ch376_init_str_3:
+	DEFB 0x08
+	DEFM "PRESENT (VER $"
+	DEFB 0x00
+ch376_init_str_4:
+	DEFB 0x0d
+	DEFM "CH376: $"
+	DEFB 0x00
+ch376_init_str_5:
+	DEFM "VERSION FAILURE"
+	DEFB 0x0d
+	DEFB 0x0a
+	DEFM "$"
+	DEFB 0x00
+ch376_init_str_6:
+	DEFM "); $"
+	DEFB 0x00
+ch376_init_str_7:
+	DEFM "USB: *$"
+	DEFB 0x00
+ch376_init_str_8:
+	DEFB 0x08
+	DEFM "DISCONNECTED$"
+	DEFB 0x00
+ch376_init_str_9:
+	DEFB 0x08
+	DEFM "CONNECTED$"
+	DEFB 0x00
+ch376_init_str_10:
+	DEFM ".$"
+	DEFB 0x00
+;source-doc/base-drv/ch376_init.c:72: void chnative_init_force(void) { _chnative_init(true); }
+; ---------------------------------
+; Function chnative_init_force
+; ---------------------------------
+_chnative_init_force:
+	ld	a,0x01
+	push	af
+	inc	sp
+	call	__chnative_init
+	inc	sp
+	ret
+;source-doc/base-drv/ch376_init.c:74: void chnative_init(void) { _chnative_init(false); }
+; ---------------------------------
+; Function chnative_init
+; ---------------------------------
+_chnative_init:
+	xor	a
+	push	af
+	inc	sp
+	call	__chnative_init
+	inc	sp
+	ret
diff --git a/Source/HBIOS/ch376-native/base-drv/usb_init.c.s b/Source/HBIOS/ch376-native/base-drv/usb_init.c.s
new file mode 100644
index 00000000..09fd1e9b
--- /dev/null
+++ b/Source/HBIOS/ch376-native/base-drv/usb_init.c.s
@@ -0,0 +1,210 @@
+;
+; Generated from source-doc/base-drv/usb_init.c.asm -- not to be modify directly
+;
+; 
+;--------------------------------------------------------
+; File Created by SDCC : free open source ISO C Compiler
+; Version 4.5.0 #15248 (Linux)
+;--------------------------------------------------------
+; Processed by Z88DK
+;--------------------------------------------------------
+	
+
+;--------------------------------------------------------
+; Public variables in this module
+;--------------------------------------------------------
+;--------------------------------------------------------
+; Externals used
+;--------------------------------------------------------
+;--------------------------------------------------------
+; special function registers
+;--------------------------------------------------------
+_CH376_DATA_PORT	.EQU	0xff88
+_CH376_COMMAND_PORT	.EQU	0xff89
+_USB_MODULE_LEDS	.EQU	0xff8a
+;--------------------------------------------------------
+; ram data
+;--------------------------------------------------------
+;--------------------------------------------------------
+; ram data
+;--------------------------------------------------------
+	
+#IF 0
+	
+; .area _INITIALIZED removed by z88dk
+	
+	
+#ENDIF
+	
+;--------------------------------------------------------
+; absolute external ram data
+;--------------------------------------------------------
+;--------------------------------------------------------
+; global & static initialisations
+;--------------------------------------------------------
+;--------------------------------------------------------
+; Home
+;--------------------------------------------------------
+;--------------------------------------------------------
+; code
+;--------------------------------------------------------
+;source-doc/base-drv/usb_init.c:7: static usb_error usb_host_bus_reset(void) {
+; ---------------------------------
+; Function usb_host_bus_reset
+; ---------------------------------
+_usb_host_bus_reset:
+;source-doc/base-drv/usb_init.c:8: ch_cmd_set_usb_mode(CH_MODE_HOST);
+	ld	l,0x06
+	call	_ch_cmd_set_usb_mode
+;source-doc/base-drv/usb_init.c:9: delay_20ms();
+	call	_delay_20ms
+;source-doc/base-drv/usb_init.c:11: ch_cmd_set_usb_mode(CH_MODE_HOST_RESET);
+	ld	l,0x07
+	call	_ch_cmd_set_usb_mode
+;source-doc/base-drv/usb_init.c:12: delay_20ms();
+	call	_delay_20ms
+;source-doc/base-drv/usb_init.c:14: ch_cmd_set_usb_mode(CH_MODE_HOST);
+	ld	l,0x06
+	call	_ch_cmd_set_usb_mode
+;source-doc/base-drv/usb_init.c:15: delay_20ms();
+	call	_delay_20ms
+;source-doc/base-drv/ch376.h:110: #endif
+	ld	l,0x0b
+	call	_ch_command
+;source-doc/base-drv/ch376.h:111:
+	ld	a,0x25
+	ld	bc,_CH376_DATA_PORT
+	out	(c), a
+;source-doc/base-drv/ch376.h:112: #define calc_max_packet_sizex(packet_size) (packet_size & 0x3FF)
+	ld	a,0xdf
+	ld	bc,_CH376_DATA_PORT
+	out	(c), a
+;source-doc/base-drv/usb_init.c:19: return USB_ERR_OK;
+	ld	l,0x00
+;source-doc/base-drv/usb_init.c:20: }
+	ret
+;source-doc/base-drv/usb_init.c:24: uint16_t usb_init(uint8_t state) {
+; ---------------------------------
+; Function usb_init
+; ---------------------------------
+_usb_init:
+	push	ix
+	ld	ix,0
+	add	ix,sp
+;source-doc/base-drv/usb_init.c:27: USB_MODULE_LEDS = 0x03;
+	ld	a,0x03
+	ld	bc,_USB_MODULE_LEDS
+	out	(c), a
+;source-doc/base-drv/usb_init.c:29: if (state == 0) {
+	ld	a,(ix+4)
+	or	a
+	jr	NZ,l_usb_init_00104
+;source-doc/base-drv/usb_init.c:30: ch_cmd_reset_all();
+	call	_ch_cmd_reset_all
+;source-doc/base-drv/usb_init.c:31: delay_medium();
+	call	_delay_medium
+;source-doc/base-drv/usb_init.c:33: if (!ch_probe()) {
+	call	_ch_probe
+	ld	a, l
+;source-doc/base-drv/usb_init.c:34: USB_MODULE_LEDS = 0x00;
+	or	a
+	jr	NZ,l_usb_init_00102
+	ld	bc,_USB_MODULE_LEDS
+	out	(c), a
+;source-doc/base-drv/usb_init.c:35: return 0xFF00;
+	ld	hl,0xff00
+	jp	l_usb_init_00113
+l_usb_init_00102:
+;source-doc/base-drv/usb_init.c:37: USB_MODULE_LEDS = 0x00;
+	ld	a,0x00
+	ld	bc,_USB_MODULE_LEDS
+	out	(c), a
+;source-doc/base-drv/usb_init.c:38: return 1;
+	ld	hl,0x0001
+	jr	l_usb_init_00113
+l_usb_init_00104:
+;source-doc/base-drv/usb_init.c:41: if (state == 1) {
+	ld	a,(ix+4)
+	dec	a
+	jr	NZ,l_usb_init_00106
+;source-doc/base-drv/usb_init.c:42: r = ch_cmd_get_ic_version();
+	call	_ch_cmd_get_ic_version
+;source-doc/base-drv/usb_init.c:44: USB_MODULE_LEDS = 0x00;
+	ld	a,0x00
+	ld	bc,_USB_MODULE_LEDS
+	out	(c), a
+;source-doc/base-drv/usb_init.c:45: return (uint16_t)r << 8 | 2;
+	xor	a
+	ld	h, l
+	ld	l,0x02
+	jr	l_usb_init_00113
+l_usb_init_00106:
+;source-doc/base-drv/usb_init.c:48: if (state == 2) {
+	ld	a,(ix+4)
+	sub	0x02
+	jr	NZ,l_usb_init_00159
+	ld	a,0x01
+	jr	l_usb_init_00160
+l_usb_init_00159:
+	xor	a
+l_usb_init_00160:
+	ld	c,a
+	or	a
+	jr	Z,l_usb_init_00110
+;source-doc/base-drv/usb_init.c:49: usb_host_bus_reset();
+	call	_usb_host_bus_reset
+;source-doc/base-drv/usb_init.c:51: r = ch_very_short_wait_int_and_get_();
+	call	_ch_very_short_wait_int_and_get
+	ld	a, l
+;source-doc/base-drv/usb_init.c:53: if (r != USB_INT_CONNECT) {
+	sub	0x81
+	jr	Z,l_usb_init_00108
+;source-doc/base-drv/usb_init.c:54: USB_MODULE_LEDS = 0x00;
+	ld	a,0x00
+	ld	bc,_USB_MODULE_LEDS
+	out	(c), a
+;source-doc/base-drv/usb_init.c:55: return 2;
+	ld	hl,0x0002
+	jr	l_usb_init_00113
+l_usb_init_00108:
+;source-doc/base-drv/usb_init.c:58: return 3;
+	ld	hl,0x0003
+	jr	l_usb_init_00113
+l_usb_init_00110:
+;source-doc/base-drv/usb_init.c:61: memset(get_usb_work_area(), 0, sizeof(_usb_state));
+	ld	b,0x35
+	ld	hl,_x
+	jr	l_usb_init_00163
+l_usb_init_00162:
+	ld	(hl),0x00
+	inc	hl
+l_usb_init_00163:
+	ld	(hl),0x00
+	inc	hl
+	djnz	l_usb_init_00162
+;source-doc/base-drv/usb_init.c:62: if (state != 2) {
+	bit	0, c
+	jr	NZ,l_usb_init_00112
+;source-doc/base-drv/usb_init.c:63: usb_host_bus_reset();
+	call	_usb_host_bus_reset
+;source-doc/base-drv/usb_init.c:64: delay_medium();
+	call	_delay_medium
+l_usb_init_00112:
+;source-doc/base-drv/usb_init.c:66: enumerate_all_devices();
+	call	_enumerate_all_devices
+;source-doc/base-drv/usb_init.c:67: USB_MODULE_LEDS = 0x00;
+	ld	a,0x00
+	ld	bc,_USB_MODULE_LEDS
+	out	(c), a
+;source-doc/base-drv/usb_init.c:68: return (uint16_t)count_of_devices() << 8 | state + 1;
+	call	_count_of_devices
+	ld	c,(ix+4)
+	ld	b,0x00
+	inc	bc
+	or	b
+	ld	h, a
+	ld	l, c
+l_usb_init_00113:
+;source-doc/base-drv/usb_init.c:69: }
+	pop	ix
+	ret
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
new file mode 100644
index 00000000..642695a1
--- /dev/null
+++ b/Source/HBIOS/ch376-native/source-doc/base-drv/ch376_init.c
@@ -0,0 +1,74 @@
+#include "print.h"
+#include "usb_init.h"
+
+static uint16_t wait_for_state(const uint8_t loop_counter, uint8_t state, const uint8_t desired_state) __sdcccall(1) {
+  uint16_t r = state;
+
+  for (uint8_t i = 0; i < loop_counter; i++) {
+    if (state == desired_state)
+      break;
+
+    if (i & 1)
+      print_string("\b $");
+    else
+      print_string("\b*$");
+
+    r     = usb_init(state);
+    state = r & 255;
+  }
+
+  return r;
+}
+
+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: *$");
+
+  r     = wait_for_state(loop_counter, state, 1);
+  state = r & 255;
+
+  print_string("\bPRESENT (VER $");
+
+  r     = usb_init(state);
+  state = r & 255;
+  if (state != 2) {
+    print_string("\rCH376: $");
+    print_string("VERSION FAILURE\r\n$");
+    return;
+  }
+
+  print_hex(r >> 8);
+  print_string("); $");
+
+  print_string("USB: *$");
+
+  r     = wait_for_state(loop_counter, state, 3);
+  state = r & 255;
+
+  if (state == 2) {
+    print_string("\bDISCONNECTED$");
+    return;
+  }
+
+  print_string("\bCONNECTED$");
+
+  // enumerate....
+  r     = usb_init(state);
+  state = r & 255;
+
+  for (uint8_t i = 0; i < loop_counter; i++) {
+    if (r >> 8 != 0)
+      break;
+
+    print_string(".$");
+    r     = usb_init(state);
+    state = r & 255;
+  }
+}
+
+void chnative_init_force(void) { _chnative_init(true); }
+
+void chnative_init(void) { _chnative_init(false); }
diff --git a/Source/HBIOS/ch376-native/source-doc/base-drv/usb-init.c b/Source/HBIOS/ch376-native/source-doc/base-drv/usb-init.c
deleted file mode 100644
index 5a5fea30..00000000
--- a/Source/HBIOS/ch376-native/source-doc/base-drv/usb-init.c
+++ /dev/null
@@ -1,142 +0,0 @@
-#include "ch376.h"
-#include "enumerate.h"
-#include "print.h"
-#include "work-area.h"
-#include "z80.h"
-#include <string.h>
-
-static usb_error usb_host_bus_reset(void) {
-  ch_cmd_set_usb_mode(CH_MODE_HOST);
-  delay_20ms();
-
-  ch_cmd_set_usb_mode(CH_MODE_HOST_RESET);
-  delay_20ms();
-
-  ch_cmd_set_usb_mode(CH_MODE_HOST);
-  delay_20ms();
-
-  ch_configure_nak_retry_3s();
-
-  return USB_ERR_OK;
-}
-
-#define ERASE_LINE "\x1B\x6C\r$"
-
-uint16_t ch376_init(uint8_t state) {
-  uint8_t r;
-
-  USB_MODULE_LEDS = 0x03;
-
-  if (state == 0) {
-    ch_cmd_reset_all();
-    delay_medium();
-
-    if (!ch_probe()) {
-      USB_MODULE_LEDS = 0x00;
-      return 0xFF00;
-    }
-    USB_MODULE_LEDS = 0x00;
-    return 1;
-  }
-
-  if (state == 1) {
-    r = ch_cmd_get_ic_version();
-
-    USB_MODULE_LEDS = 0x00;
-    return (uint16_t)r << 8 | 2;
-  }
-
-  if (state == 2) {
-    usb_host_bus_reset();
-
-    r = ch_very_short_wait_int_and_get_status();
-
-    if (r != USB_INT_CONNECT) {
-      USB_MODULE_LEDS = 0x00;
-      return 2;
-    }
-
-    return 3;
-  }
-
-  memset(get_usb_work_area(), 0, sizeof(_usb_state));
-  if (state != 2) {
-    usb_host_bus_reset();
-    delay_medium();
-  }
-  enumerate_all_devices();
-  USB_MODULE_LEDS = 0x00;
-  return (uint16_t)count_of_devices() << 8 | state + 1;
-}
-
-static uint16_t wait_for_state(const uint8_t loop_counter, uint8_t state, const uint8_t desired_state) __sdcccall(1) {
-  uint16_t r = state;
-
-  for (uint8_t i = 0; i < loop_counter; i++) {
-    if (state == desired_state)
-      break;
-
-    if (i & 1)
-      print_string("\b $");
-    else
-      print_string("\b*$");
-
-    r     = ch376_init(state);
-    state = r & 255;
-  }
-
-  return r;
-}
-
-void _chnative_init(bool forced) {
-  uint8_t       state = 0;
-  uint16_t      r;
-  const uint8_t loop_counter = forced ? 40 : 5;
-
-  print_string("\r\nCH376: *$");
-
-  r     = wait_for_state(loop_counter, state, 1);
-  state = r & 255;
-
-  print_string("\bPRESENT (VER $");
-
-  r     = ch376_init(state);
-  state = r & 255;
-  if (state != 2) {
-    print_string("\rCH376: $");
-    print_string("VERSION FAILURE\r\n$");
-    return;
-  }
-
-  print_hex(r >> 8);
-  print_string("); $");
-
-  print_string("USB: *$");
-
-  r     = wait_for_state(loop_counter, state, 3);
-  state = r & 255;
-
-  if (state == 2) {
-    print_string("\bDISCONNECTED$");
-    return;
-  }
-
-  print_string("\bCONNECTED$");
-
-  // enumerate....
-  r     = ch376_init(state);
-  state = r & 255;
-
-  for (uint8_t i = 0; i < loop_counter; i++) {
-    if (r >> 8 != 0)
-      break;
-
-    print_string(".$");
-    r     = ch376_init(state);
-    state = r & 255;
-  }
-}
-
-void chnative_init_force(void) { _chnative_init(true); }
-
-void chnative_init(void) { _chnative_init(false); }
diff --git a/Source/HBIOS/ch376-native/source-doc/base-drv/usb_init.c b/Source/HBIOS/ch376-native/source-doc/base-drv/usb_init.c
new file mode 100644
index 00000000..319f9416
--- /dev/null
+++ b/Source/HBIOS/ch376-native/source-doc/base-drv/usb_init.c
@@ -0,0 +1,69 @@
+#include "usb_init.h"
+#include "ch376.h"
+#include "enumerate.h"
+#include "work-area.h"
+#include <string.h>
+
+static usb_error usb_host_bus_reset(void) {
+  ch_cmd_set_usb_mode(CH_MODE_HOST);
+  delay_20ms();
+
+  ch_cmd_set_usb_mode(CH_MODE_HOST_RESET);
+  delay_20ms();
+
+  ch_cmd_set_usb_mode(CH_MODE_HOST);
+  delay_20ms();
+
+  ch_configure_nak_retry_3s();
+
+  return USB_ERR_OK;
+}
+
+#define ERASE_LINE "\x1B\x6C\r$"
+
+uint16_t usb_init(uint8_t state) {
+  uint8_t r;
+
+  USB_MODULE_LEDS = 0x03;
+
+  if (state == 0) {
+    ch_cmd_reset_all();
+    delay_medium();
+
+    if (!ch_probe()) {
+      USB_MODULE_LEDS = 0x00;
+      return 0xFF00;
+    }
+    USB_MODULE_LEDS = 0x00;
+    return 1;
+  }
+
+  if (state == 1) {
+    r = ch_cmd_get_ic_version();
+
+    USB_MODULE_LEDS = 0x00;
+    return (uint16_t)r << 8 | 2;
+  }
+
+  if (state == 2) {
+    usb_host_bus_reset();
+
+    r = ch_very_short_wait_int_and_get_status();
+
+    if (r != USB_INT_CONNECT) {
+      USB_MODULE_LEDS = 0x00;
+      return 2;
+    }
+
+    return 3;
+  }
+
+  memset(get_usb_work_area(), 0, sizeof(_usb_state));
+  if (state != 2) {
+    usb_host_bus_reset();
+    delay_medium();
+  }
+  enumerate_all_devices();
+  USB_MODULE_LEDS = 0x00;
+  return (uint16_t)count_of_devices() << 8 | state + 1;
+}
diff --git a/Source/HBIOS/ch376-native/source-doc/base-drv/usb_init.h b/Source/HBIOS/ch376-native/source-doc/base-drv/usb_init.h
new file mode 100644
index 00000000..08808955
--- /dev/null
+++ b/Source/HBIOS/ch376-native/source-doc/base-drv/usb_init.h
@@ -0,0 +1,8 @@
+#ifndef __USB_INIT
+#define __USB_INIT
+
+#include <stdint.h>
+
+extern uint16_t usb_init(uint8_t state);
+
+#endif