thodg/cgminer

diff --git a/ASIC-README b/ASIC-README
index 55b76d8..a56666c 100644
--- a/ASIC-README
+++ b/ASIC-README
@@ -102,11 +102,13 @@ ASIC SPECIFIC COMMANDS
 --avalon-options <arg> Set avalon options baud:miners:asic:timeout:freq
 --avalon-temp <arg> Set avalon target temperature (default: 50)
 --bflsc-overheat <arg> Set overheat temperature where BFLSC devices throttle, 0 to disable (default: 90)
---bitburner-voltage <arg> Set BitBurner core voltage, in millivolts
+--bitburner-fury-options <arg> Override avalon-options for BitBurner Fury boards baud:miners:asic:timeout:freq
+--bitburner-fury-voltage <arg> Set BitBurner Fury core voltage, in millivolts
+--bitburner-voltage <arg> Set BitBurner (Avalon) core voltage, in millivolts
 --klondike-options <arg> Set klondike options clock:temp1:temp2:fan
 
 
-AVALON DEVICES
+AVALON AND BITBURNER DEVICES
 
 Currently all known Avalon devices come with their own operating system and
 a preinstalled version of cgminer as part of the flash firmware, based on the
@@ -118,6 +120,9 @@ command, and adjust its fan control-temperature relationship with avalon-temp.
 By default the avalon will also cut off when its temperature reaches 60
 degrees.
 
+All current BitBurner devices (BitBurner X, BitBurner XX and BitBurner Fury)
+emulate Avalon devices, whether or not they use Avalon chips.
+
 Avalon commands:
 
 --avalon-auto       Adjust avalon overclock frequency dynamically for best hashrate
@@ -126,7 +131,9 @@ Avalon commands:
 --avalon-freq <arg> Set frequency range for avalon-auto, single value or range
 --avalon-options <arg> Set avalon options baud:miners:asic:timeout:freq
 --avalon-temp <arg> Set avalon target temperature (default: 50)
---bitburner-voltage <arg> Set BitBurner core voltage, in millivolts
+--bitburner-fury-options <arg> Override avalon-options for BitBurner Fury boards baud:miners:asic:timeout:freq
+--bitburner-fury-voltage <arg> Set BitBurner Fury core voltage, in millivolts
+--bitburner-voltage <arg> Set BitBurner (Avalon) core voltage, in millivolts
 
 
 Avalon auto will enable dynamic overclocking gradually increasing and
@@ -177,8 +184,15 @@ Miners:
 Most Avalons are 3 module devices, which come to 24 miners. 4 module devices
 would use 32 here.
 
+For BitBurner X and BitBurner XX devices you should use twice the number of
+boards in the stack.  e.g. for a two-board stack you would use 4.  For
+BitBurner Fury devices you should use the total number of BitFury chips in the
+stack (i.e. 16 times the number of boards).  e.g. for a two-board stack you
+would use 32.
+
 Asic count:
-Virtually all have 10, so don't change this.
+Virtually all have 10, so don't change this.  BitBurner devices use 10 here
+even if the boards have some other number of ASICs.
 
 Timeout:
 This is how long the device will work on a work item before accepting new work
@@ -198,16 +212,61 @@ Sample settings for valid different frequencies (last 2 values):
 50:256
 
 Frequency:
-This is the clock speed of the devices. Only specific values work, 256, 270,
-282 (default), 300, 325, 350 and 375.
+This is the clock speed of the devices. For Avalon devices, only specific
+values work, 256, 270, 282 (default), 300, 325, 350 and 375.  For BitBurner
+devices, other values can be used.
 
 Note that setting a value with an asterisk next to it will be using your
 avalon outside its spec and you do so at your own risk.
 
+The default frequency for BitBurner X and BitBurner XX boards is 282.  The
+default frequency for BitBurner Fury boards is 256.  Overclocking is
+possible - please consult the product documentation and/or manufacturer for
+information on safe values.  Values outside this range are used at your own
+risk.  Underclocking is also possible, at least with the X and XX boards.
+
+eg:
+--bitburner-fury-options <arg> Override avalon-options for BitBurner Fury boards baud:miners:asic:timeout:freq
+
+This option takes the same format as --avalon-options.  When specified, it
+will be used for BitBurner Fury boards in preference to the values specified
+in --avalon-options.  (If not specified, BitBurner Fury boards will be
+controlled by the values used in --avalon options.)  See --avalon-options for
+a detailed description of the fields.
+
+This option is particularly useful when using a mixture of different BitBurner
+devices as BitBurner Fury devices generally require significantly different
+clock frequencies from Avalon-based devices.  This option is only available
+for boards with recent firmware that are recognized by cgminer as BBF.
+
 eg:
---bitburner-voltage <arg> Set BitBurner core voltage, in millivolts
+--bitburner-fury-voltage <arg> Set BitBurner Fury core voltage, in millivolts
+
+Sets the core voltage for the BitBurner Fury boards.  The default value is
+900.  Overvolting is possible - please consult the product documentation
+and/or manufaturer about the safe range of values.  Values outside this range
+are used at your own risk.
+
+This option is only available for boards with recent firmware that are
+recognized by cgminer as BBF.  For boards recognized as BTB, see
+--bitburner-voltage
+
+eg:
+--bitburner-voltage <arg> Set BitBurner (Avalon) core voltage, in millivolts
+
+Sets the core voltage for the Avalon-based BitBurner X and BitBurner XX
+boards.  The default value is 1200.  Overvolting and undervolting is
+possible - please consult the product documentation and/or the manufacturer
+for information about the safe range.  Values outside this range are used at
+your own risk.
+
+Older BitBurner Fury firmware emulates a BitBurner XX board and is identified
+by cgminer as BTB.  On these devices, --bitburner-voltage is used to control
+the voltage of the BitBurner Fury board.  The actual core voltage will be
+300mV less than the requested voltage, so to run a BitBurner Fury board at
+950mV use --bitburner-voltage 1250.  The default value of 1200 therefore
+corresponds to the default core voltage of 900mV.
 
-Self evident.
 
 If you use the full curses based interface with Avalons you will get this
 information:
diff --git a/README b/README
index 5c73991..832d424 100644
--- a/README
+++ b/README
@@ -220,7 +220,9 @@ ASIC only options:
 --avalon-options <arg> Set avalon options baud:miners:asic:timeout:freq
 --avalon-temp <arg> Set avalon target temperature (default: 50)
 --bflsc-overheat <arg> Set overheat temperature where BFLSC devices throttle, 0 to disable (default: 90)
---bitburner-voltage <arg> Set BitBurner core voltage, in millivolts
+--bitburner-fury-options <arg> Override avalon-options for BitBurner Fury boards baud:miners:asic:timeout:freq
+--bitburner-fury-voltage <arg> Set BitBurner Fury core voltage, in millivolts
+--bitburner-voltage <arg> Set BitBurner (Avalon) core voltage, in millivolts
 
 See ASIC-README for more information regarding these.
 
diff --git a/cgminer.c b/cgminer.c
index 99dbaa7..f6f5cce 100644
--- a/cgminer.c
+++ b/cgminer.c
@@ -167,6 +167,7 @@ char *opt_icarus_timing = NULL;
 bool opt_worktime;
 #ifdef USE_AVALON
 char *opt_avalon_options = NULL;
+char *opt_bitburner_fury_options = NULL;
 #endif
 #ifdef USE_KLONDIKE
 char *opt_klondike_options = NULL;
@@ -1036,6 +1037,13 @@ static char *set_avalon_options(const char *arg)
 
 	return NULL;
 }
+
+static char *set_bitburner_fury_options(const char *arg)
+{
+	opt_set_charp(arg, &opt_bitburner_fury_options);
+
+	return NULL;
+}
 #endif
 
 #ifdef USE_KLONDIKE
@@ -1255,6 +1263,9 @@ static struct opt_table opt_config_table[] = {
 	OPT_WITH_ARG("--bitburner-fury-voltage",
 		     opt_set_intval, NULL, &opt_bitburner_fury_core_voltage,
 		     "Set BitBurner Fury core voltage, in millivolts"),
+	OPT_WITH_ARG("--bitburner-fury-options",
+		     set_bitburner_fury_options, NULL, NULL,
+		     "Override avalon-options for BitBurner Fury boards baud:miners:asic:timeout:freq"),
 #endif
 #ifdef USE_KLONDIKE
 	OPT_WITH_ARG("--klondike-options",
diff --git a/driver-avalon.c b/driver-avalon.c
index 09e6dfa..75cd06e 100644
--- a/driver-avalon.c
+++ b/driver-avalon.c
@@ -53,6 +53,7 @@ int opt_bitburner_fury_core_voltage = BITBURNER_FURY_DEFAULT_CORE_VOLTAGE;
 bool opt_avalon_auto;
 
 static int option_offset = -1;
+static int bbf_option_offset = -1;
 
 static int avalon_init_task(struct avalon_task *at,
 			    uint8_t reset, uint8_t ff, uint8_t fan,
@@ -400,7 +401,7 @@ static int avalon_calc_timeout(int frequency)
 }
 
 static bool get_options(int this_option_offset, int *baud, int *miner_count,
-			int *asic_count, int *timeout, int *frequency)
+			int *asic_count, int *timeout, int *frequency, char *options)
 {
 	char buf[BUFSIZ+1];
 	char *ptr, *comma, *colon, *colon2, *colon3, *colon4;
@@ -408,10 +409,10 @@ static bool get_options(int this_option_offset, int *baud, int *miner_count,
 	size_t max;
 	int i, tmp;
 
-	if (opt_avalon_options == NULL)
+	if (options == NULL)
 		buf[0] = '\0';
 	else {
-		ptr = opt_avalon_options;
+		ptr = options;
 		for (i = 0; i < this_option_offset; i++) {
 			comma = strchr(ptr, ',');
 			if (comma == NULL)
@@ -754,7 +755,7 @@ static void bitburner_get_version(struct cgpu_info *avalon)
 static bool avalon_detect_one(libusb_device *dev, struct usb_find_devices *found)
 {
 	int baud, miner_count, asic_count, timeout, frequency;
-	int this_option_offset = ++option_offset;
+	int this_option_offset;
 	struct avalon_info *info;
 	struct cgpu_info *avalon;
 	bool configured;
@@ -768,12 +769,14 @@ static bool avalon_detect_one(libusb_device *dev, struct usb_find_devices *found
 	timeout = AVALON_DEFAULT_TIMEOUT;
 	frequency = AVALON_DEFAULT_FREQUENCY;
 
-	configured = get_options(this_option_offset, &baud, &miner_count,
-				 &asic_count, &timeout, &frequency);
-
 	if (!usb_init(avalon, dev, found))
 		goto shin;
 
+	this_option_offset = usb_ident(avalon) == IDENT_BBF ? ++bbf_option_offset : ++option_offset;
+	configured = get_options(this_option_offset, &baud, &miner_count,
+				 &asic_count, &timeout, &frequency,
+				 (usb_ident(avalon) == IDENT_BBF && opt_bitburner_fury_options != NULL) ? opt_bitburner_fury_options : opt_avalon_options);
+
 	/* Even though this is an FTDI type chip, we want to do the parsing
 	 * all ourselves so set it to std usb type */
 	avalon->usbdev->usb_type = USB_TYPE_STD;
@@ -796,10 +799,18 @@ static bool avalon_detect_one(libusb_device *dev, struct usb_find_devices *found
 		info->frequency = frequency;
 	} else {
 		info->baud = AVALON_IO_SPEED;
-		info->miner_count = AVALON_DEFAULT_MINER_NUM;
 		info->asic_count = AVALON_DEFAULT_ASIC_NUM;
-		info->timeout = AVALON_DEFAULT_TIMEOUT;
-		info->frequency = AVALON_DEFAULT_FREQUENCY;
+		switch (usb_ident(avalon)) {
+		case IDENT_BBF:
+			info->miner_count = BITBURNER_FURY_DEFAULT_MINER_NUM;
+			info->timeout = BITBURNER_FURY_DEFAULT_TIMEOUT;
+			info->frequency = BITBURNER_FURY_DEFAULT_FREQUENCY;
+			break;
+		default:
+			info->miner_count = AVALON_DEFAULT_MINER_NUM;
+			info->timeout = AVALON_DEFAULT_TIMEOUT;
+			info->frequency = AVALON_DEFAULT_FREQUENCY;
+		}
 	}
 
 	info->fan_pwm = AVALON_DEFAULT_FAN_MIN_PWM;
diff --git a/driver-avalon.h b/driver-avalon.h
index e506388..063fb68 100644
--- a/driver-avalon.h
+++ b/driver-avalon.h
@@ -55,6 +55,12 @@
 #define AVALON_MAX_MINER_NUM 0x100
 #define AVALON_DEFAULT_ASIC_NUM 0xA
 
+/* Default number of miners for Bitburner Fury is for a stack of 8 boards,
+   but it will work acceptably for smaller stacks, too */
+#define BITBURNER_FURY_DEFAULT_MINER_NUM 128
+#define BITBURNER_FURY_DEFAULT_FREQUENCY 256
+#define BITBURNER_FURY_DEFAULT_TIMEOUT 50
+
 #define AVALON_AUTO_CYCLE 1024
 
 #define AVALON_FTDI_READSIZE 510
diff --git a/miner.h b/miner.h
index 874f172..bd80883 100644
--- a/miner.h
+++ b/miner.h
@@ -1022,6 +1022,7 @@ extern char *opt_icarus_timing;
 extern bool opt_worktime;
 #ifdef USE_AVALON
 extern char *opt_avalon_options;
+extern char *opt_bitburner_fury_options;
 #endif
 #ifdef USE_KLONDIKE
 extern char *opt_klondike_options;