diff --git a/src/anlogicCable.cpp b/src/anlogicCable.cpp
index 795eac3..82cec63 100644
--- a/src/anlogicCable.cpp
+++ b/src/anlogicCable.cpp
@@ -44,7 +44,7 @@ enum analogicCableFreq {
 	ANLOGICCABLE_FREQ_90K  = 0xff
 };
 
-AnlogicCable::AnlogicCable(uint32_t clkHZ, bool verbose):
+AnlogicCable::AnlogicCable(uint32_t clkHZ, uint8_t verbose):
 			_verbose(verbose),
 			dev_handle(NULL), usb_ctx(NULL), _tdi(0), _tms(0)
 {
diff --git a/src/anlogicCable.hpp b/src/anlogicCable.hpp
index 00f7f89..18149bd 100644
--- a/src/anlogicCable.hpp
+++ b/src/anlogicCable.hpp
@@ -19,7 +19,7 @@
 
 class AnlogicCable : public JtagInterface {
  public:
-	AnlogicCable(uint32_t clkHZ, bool verbose);
+	AnlogicCable(uint32_t clkHZ, uint8_t verbose);
 	virtual ~AnlogicCable();
 
 	int setClkFreq(uint32_t clkHZ) override;
@@ -43,7 +43,7 @@ class AnlogicCable : public JtagInterface {
 	int flush() override;
 
  private:
-	bool _verbose;
+	uint8_t _verbose;
 
 	int write(uint8_t *in_buf, uint8_t *out_buf, int len, int rd_len);
 
diff --git a/src/ch552_jtag.cpp b/src/ch552_jtag.cpp
index bbada7b..e0a5ed1 100644
--- a/src/ch552_jtag.cpp
+++ b/src/ch552_jtag.cpp
@@ -30,7 +30,7 @@ using namespace std;
 #endif
 
 CH552_jtag::CH552_jtag(const FTDIpp_MPSSE::mpsse_bit_config &cable,
-			string dev, const string &serial, uint32_t clkHZ, bool verbose):
+			string dev, const string &serial, uint32_t clkHZ, uint8_t verbose):
 			FTDIpp_MPSSE(cable, dev, serial, clkHZ, verbose), _to_read(0)
 {
 	init_internal(cable);
diff --git a/src/ch552_jtag.hpp b/src/ch552_jtag.hpp
index 3ecf569..5fd35ec 100644
--- a/src/ch552_jtag.hpp
+++ b/src/ch552_jtag.hpp
@@ -23,7 +23,7 @@
 class CH552_jtag : public JtagInterface, private FTDIpp_MPSSE {
  public:
 	CH552_jtag(const FTDIpp_MPSSE::mpsse_bit_config &cable, std::string dev,
-		const std::string &serial, uint32_t clkHZ, bool verbose = false);
+		const std::string &serial, uint32_t clkHZ, uint8_t verbose = false);
 	virtual ~CH552_jtag();
 
 	int setClkFreq(uint32_t clkHZ) override;
diff --git a/src/cmsisDAP.cpp b/src/cmsisDAP.cpp
index 5b42abc..e272a43 100644
--- a/src/cmsisDAP.cpp
+++ b/src/cmsisDAP.cpp
@@ -88,7 +88,7 @@ enum cmsisdap_status {
 	DAP_ERROR = 0xff
 };
 
-CmsisDAP::CmsisDAP(int vid, int pid, bool verbose):_verbose(verbose),
+CmsisDAP::CmsisDAP(int vid, int pid, uint8_t verbose):_verbose(verbose),
 		_device_idx(0),  _vid(vid), _pid(pid),
 		_serial_number(L""), _dev(NULL), _num_tms(0), _is_connect(false)
 {
diff --git a/src/cmsisDAP.hpp b/src/cmsisDAP.hpp
index 5dee1d7..d034209 100644
--- a/src/cmsisDAP.hpp
+++ b/src/cmsisDAP.hpp
@@ -21,9 +21,9 @@ class CmsisDAP: public JtagInterface {
 		 *                    else search for a compatible device
 		 * \param[in] vid: vendor id
 		 * \param[in] pid: product id
-		 * \param[in] verbose: verbose level false normal, true verbose
+		 * \param[in] verbose: verbose level 0 normal, 1 verbose
 		 */
-		CmsisDAP(const int vid, const int pid, bool verbose);
+		CmsisDAP(const int vid, const int pid, uint8_t verbose);
 
 		~CmsisDAP();
 
@@ -96,7 +96,7 @@ class CmsisDAP: public JtagInterface {
 		int writeJtagSequence(uint8_t tms, uint8_t *tx, uint8_t *rx,
 				uint32_t len, bool end);
 
-		bool _verbose;                /**< display more message */
+		uint8_t _verbose;                /**< display more message */
 		int16_t _device_idx;          /**< device index */
 		uint16_t _vid;                /**< device Vendor ID */
 		uint16_t _pid;                /**< device Product ID */
diff --git a/src/dirtyJtag.cpp b/src/dirtyJtag.cpp
index 71d3e6b..fb70131 100644
--- a/src/dirtyJtag.cpp
+++ b/src/dirtyJtag.cpp
@@ -59,7 +59,7 @@ enum dirtyJtagSig {
 	SIG_TMS =   (1 << 4)
 };
 
-DirtyJtag::DirtyJtag(uint32_t clkHZ, bool verbose):
+DirtyJtag::DirtyJtag(uint32_t clkHZ, uint8_t verbose):
 			_verbose(verbose),
 			dev_handle(NULL), usb_ctx(NULL), _tdi(0), _tms(0)
 {
diff --git a/src/dirtyJtag.hpp b/src/dirtyJtag.hpp
index 11d304e..86c52cb 100644
--- a/src/dirtyJtag.hpp
+++ b/src/dirtyJtag.hpp
@@ -19,7 +19,7 @@
 
 class DirtyJtag : public JtagInterface {
  public:
-	DirtyJtag(uint32_t clkHZ, bool verbose);
+	DirtyJtag(uint32_t clkHZ, uint8_t verbose);
 	virtual ~DirtyJtag();
 
 	int setClkFreq(uint32_t clkHZ) override;
@@ -43,7 +43,7 @@ class DirtyJtag : public JtagInterface {
 	int flush() override;
 
  private:
-	bool _verbose;
+	uint8_t _verbose;
 
 	int sendBitBang(uint8_t mask, uint8_t val, uint8_t *read, bool last);
 	void getVersion();
diff --git a/src/ftdiJtagBitbang.cpp b/src/ftdiJtagBitbang.cpp
index ab48e07..1b70124 100644
--- a/src/ftdiJtagBitbang.cpp
+++ b/src/ftdiJtagBitbang.cpp
@@ -32,7 +32,7 @@ using namespace std;
 
 FtdiJtagBitBang::FtdiJtagBitBang(const FTDIpp_MPSSE::mpsse_bit_config &cable,
 			const jtag_pins_conf_t *pin_conf, string dev, const std::string &serial,
-			uint32_t clkHZ, bool verbose):
+			uint32_t clkHZ, uint8_t verbose):
 			FTDIpp_MPSSE(cable, dev, serial, clkHZ, verbose), _bitmode(0),
 			_curr_tms(0), _rx_size(0)
 {
diff --git a/src/ftdiJtagBitbang.hpp b/src/ftdiJtagBitbang.hpp
index 018d3dd..da95937 100644
--- a/src/ftdiJtagBitbang.hpp
+++ b/src/ftdiJtagBitbang.hpp
@@ -25,7 +25,7 @@ class FtdiJtagBitBang : public JtagInterface, private FTDIpp_MPSSE {
  public:
 	FtdiJtagBitBang(const FTDIpp_MPSSE::mpsse_bit_config &cable,
 		const jtag_pins_conf_t *pin_conf, std::string dev, const std::string &serial,
-		uint32_t clkHZ, bool verbose = false);
+		uint32_t clkHZ, uint8_t verbose = 0);
 	virtual ~FtdiJtagBitBang();
 
 	int setClkFreq(uint32_t clkHZ) override;
diff --git a/src/ftdiJtagMPSSE.cpp b/src/ftdiJtagMPSSE.cpp
index a875372..d514199 100644
--- a/src/ftdiJtagMPSSE.cpp
+++ b/src/ftdiJtagMPSSE.cpp
@@ -29,7 +29,7 @@ using namespace std;
 #endif
 
 FtdiJtagMPSSE::FtdiJtagMPSSE(const FTDIpp_MPSSE::mpsse_bit_config &cable,
-			string dev, const string &serial, uint32_t clkHZ, bool verbose):
+			string dev, const string &serial, uint32_t clkHZ, uint8_t verbose):
 			FTDIpp_MPSSE(cable, dev, serial, clkHZ, verbose), _ch552WA(false),
 			_write_mode(0), _read_mode(0)
 {
diff --git a/src/ftdiJtagMPSSE.hpp b/src/ftdiJtagMPSSE.hpp
index 7392640..5b6b9ed 100644
--- a/src/ftdiJtagMPSSE.hpp
+++ b/src/ftdiJtagMPSSE.hpp
@@ -23,7 +23,7 @@
 class FtdiJtagMPSSE : public JtagInterface, private FTDIpp_MPSSE {
  public:
 	FtdiJtagMPSSE(const FTDIpp_MPSSE::mpsse_bit_config &cable, std::string dev,
-		const std::string &serial, uint32_t clkHZ, bool verbose = false);
+		const std::string &serial, uint32_t clkHZ, uint8_t verbose = 0);
 	virtual ~FtdiJtagMPSSE();
 
 	int setClkFreq(uint32_t clkHZ) override;
diff --git a/src/ftdipp_mpsse.cpp b/src/ftdipp_mpsse.cpp
index 0b017fb..44fb36a 100644
--- a/src/ftdipp_mpsse.cpp
+++ b/src/ftdipp_mpsse.cpp
@@ -27,7 +27,7 @@ using namespace std;
 	do { if (_verbose) fprintf(stdout, __VA_ARGS__);}while(0)
 
 FTDIpp_MPSSE::FTDIpp_MPSSE(const mpsse_bit_config &cable, const string &dev,
-				const std::string &serial, uint32_t clkHZ, bool verbose):
+				const std::string &serial, uint32_t clkHZ, uint8_t verbose):
 				_verbose(verbose), _cable(cable), _vid(0),
 				_pid(0), _bus(-1), _addr(-1),
 				_interface(cable.interface),
diff --git a/src/ftdipp_mpsse.hpp b/src/ftdipp_mpsse.hpp
index 9919329..4775e49 100644
--- a/src/ftdipp_mpsse.hpp
+++ b/src/ftdipp_mpsse.hpp
@@ -21,7 +21,7 @@ class FTDIpp_MPSSE {
 		} mpsse_bit_config;
 
 		FTDIpp_MPSSE(const mpsse_bit_config &cable, const std::string &dev,
-			const std::string &serial, uint32_t clkHZ, bool verbose = false);
+			const std::string &serial, uint32_t clkHZ, uint8_t verbose = 0);
 		~FTDIpp_MPSSE();
 
 		int init(unsigned char latency, unsigned char bitmask_mode,
@@ -67,7 +67,7 @@ class FTDIpp_MPSSE {
 		int mpsse_get_buffer_size() {return _buffer_size;}
 		unsigned int udevstufftoint(const char *udevstring, int base);
 		bool search_with_dev(const std::string &device);
-		bool _verbose;
+		uint8_t _verbose;
 		mpsse_bit_config _cable;
 		int _vid;
 		int _pid;
diff --git a/src/jtag.cpp b/src/jtag.cpp
index 787ab40..5a55b79 100644
--- a/src/jtag.cpp
+++ b/src/jtag.cpp
@@ -62,7 +62,7 @@ using namespace std;
 Jtag::Jtag(cable_t &cable, const jtag_pins_conf_t *pin_conf, string dev,
 			const string &serial, uint32_t clkHZ, int8_t verbose,
 			const string &firmware_path):
-			_verbose(verbose > 1),
+			_verbose(verbose),
 			_state(RUN_TEST_IDLE),
 			_tms_buffer_size(128), _num_tms(0),
 			_board_name("nope"), device_index(0)
diff --git a/src/usbBlaster.cpp b/src/usbBlaster.cpp
index 17ee633..2f78299 100644
--- a/src/usbBlaster.cpp
+++ b/src/usbBlaster.cpp
@@ -38,7 +38,7 @@ using namespace std;
 #endif
 
 UsbBlaster::UsbBlaster(int vid, int pid, const std::string &firmware_path,
-		bool verbose):
+		uint8_t verbose):
 			_verbose(verbose), _nb_bit(0),
 			_curr_tms(0), _buffer_size(64)
 {
diff --git a/src/usbBlaster.hpp b/src/usbBlaster.hpp
index 69ba723..c1ee933 100644
--- a/src/usbBlaster.hpp
+++ b/src/usbBlaster.hpp
@@ -41,7 +41,7 @@ class UsbBlaster_ll {
 class UsbBlaster : public JtagInterface {
  public:
 	UsbBlaster(int vid, int pid, const std::string &firmware_path,
-			bool verbose = false);
+			uint8_t verbose = 0);
 	virtual ~UsbBlaster();
 
 	int setClkFreq(uint32_t clkHZ) override;
@@ -86,7 +86,7 @@ class UsbBlaster : public JtagInterface {
 	int setBitmode(uint8_t mode);
 	uint8_t *_in_buf;
 
-	bool _verbose;
+	uint8_t _verbose;
 	uint8_t _tck_pin; /*!< tck pin: 1 << pin id */
 	uint8_t _tms_pin; /*!< tms pin: 1 << pin id */
 	uint8_t _tdi_pin; /*!< tdi pin: 1 << pin id */