From: Keith Packard <keithp@keithp.com>
Date: Sun, 7 Dec 2008 00:32:12 +0000 (-0800)
Subject: Add libusb support and lots more examples
X-Git-Tag: 0.5~58^2~106
X-Git-Url: https://git.gag.com/?p=fw%2Faltos;a=commitdiff_plain;h=3709ec3205cfb152b6568f3ea505c67fe7504c2a

Add libusb support and lots more examples
---

diff --git a/1101 b/1101
new file mode 100644
index 00000000..b5e9b3c4
--- /dev/null
+++ b/1101
@@ -0,0 +1,131 @@
+#
+# Debug mode - drive RESET_N low for two clock cycles
+#
+C D R
+. D .
+C D .
+. D .
+C D .
+. D R
+
+#
+# 1101 with zeros
+#
+
+C . R	0
+. . R
+C . R	0
+. . R
+C . R	0
+. . R
+C . R	0
+. . R
+C . R	0
+. . R
+C . R	0
+. . R
+C D R	1
+. D R
+C D R	1
+. D R
+
+C . R	0
+. . R
+C D R	1
+. D R
+C . R	0
+. . R
+C . R	0
+. . R
+C . R	0
+. . R
+
+#
+# Now read for a while
+#
+
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+
+C D R
+. D R
+
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+
+# try sending READ_STATUS
+
+C . R	0
+. . R
+C . R	0
+. . R
+C D R	1
+. D R
+C D R	1
+. D R
+
+C . R	0
+. . R
+C D R	1
+. D R
+C . R	0
+. . R
+C . R	0
+. . R
+
+
+C D R
+. D R
+
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
diff --git a/Makefile b/Makefile
index 8e80e65c..27a389e2 100644
--- a/Makefile
+++ b/Makefile
@@ -4,14 +4,18 @@ KINC=$(KERNEL)/drivers/usb/serial
 WARN=-Wall -Wpointer-arith -Wstrict-prototypes -Wmissing-prototypes\
 	-Wmissing-declarations -Wnested-externs -fno-strict-aliasing 
 CFLAGS=-g -I$(KINC) $(WARN)
+LIBS=-lusb
 
-OBJS=ccdbg.o ccdbg-command.o ccdbg-io.o cccp.o
+KERNEL_OBJS=cccp.o
+LIBUSB_OBJS=cp-usb.o
+
+OBJS=ccdbg.o ccdbg-command.o ccdbg-io.o $(LIBUSB_OBJS)
 INCS=ccdbg.h cccp.h
 
 PROG=ccdbg
 
 $(PROG): $(OBJS)
-	$(CC) $(CFLAGS) -o $@ $(OBJS)
+	$(CC) $(CFLAGS) -o $@ $(OBJS) $(LIBS)
 
 clean:
 	rm -f $(PROG) $(OBJS)
diff --git a/ccdbg-command.c b/ccdbg-command.c
index a0a12d9d..f79d3621 100644
--- a/ccdbg-command.c
+++ b/ccdbg-command.c
@@ -23,19 +23,19 @@ ccdbg_debug_mode(struct ccdbg *dbg)
 {
 	/* force two rising clocks while holding RESET_N low */
 	ccdbg_half_clock(dbg);
-	cccp_write(dbg, CC_RESET_N|CC_CLOCK, 0); ccdbg_half_clock(dbg);
-	cccp_write(dbg, CC_CLOCK, CC_CLOCK);	 ccdbg_half_clock(dbg);
-	cccp_write(dbg, CC_CLOCK, 0);		 ccdbg_half_clock(dbg);
-	cccp_write(dbg, CC_CLOCK, CC_CLOCK);     ccdbg_half_clock(dbg);
-	cccp_write(dbg, CC_RESET_N, CC_RESET_N); ccdbg_half_clock(dbg);
+	ccdbg_write(dbg, CC_RESET_N|CC_CLOCK, 0); ccdbg_half_clock(dbg);
+	ccdbg_write(dbg, CC_CLOCK, CC_CLOCK);	 ccdbg_half_clock(dbg);
+	ccdbg_write(dbg, CC_CLOCK, 0);		 ccdbg_half_clock(dbg);
+	ccdbg_write(dbg, CC_CLOCK, CC_CLOCK);     ccdbg_half_clock(dbg);
+	ccdbg_write(dbg, CC_RESET_N, CC_RESET_N); ccdbg_half_clock(dbg);
 }
 
 void
 ccdbg_reset(struct ccdbg *dbg)
 {
 	ccdbg_half_clock(dbg);
-	cccp_write(dbg, CC_RESET_N, 0);		ccdbg_half_clock(dbg);
-	cccp_write(dbg, CC_RESET_N, CC_RESET_N);
+	ccdbg_write(dbg, CC_RESET_N, 0);		ccdbg_half_clock(dbg);
+	ccdbg_write(dbg, CC_RESET_N, CC_RESET_N);
 }
 
 uint8_t
diff --git a/ccdbg-io.c b/ccdbg-io.c
index 9586faa3..2cd42e27 100644
--- a/ccdbg-io.c
+++ b/ccdbg-io.c
@@ -40,6 +40,8 @@ ccdbg_open(char *file)
 		perror("calloc");
 		return NULL;
 	}
+	dbg->clock = 1;
+#ifdef USE_KERNEL
 	dbg->fd = open(file, 2);
 	if (dbg->fd < 0) {
 		perror(file);
@@ -48,6 +50,9 @@ ccdbg_open(char *file)
 	}
 	cccp_init(dbg);
 	cccp_write(dbg, CC_CLOCK, CC_CLOCK);
+#else
+	cp_usb_init(dbg);
+#endif
 	dbg->clock = 1;
 	return dbg;
 }
@@ -55,17 +60,42 @@ ccdbg_open(char *file)
 void
 ccdbg_close(struct ccdbg *dbg)
 {
+#if USE_KERNEL
 	cccp_fini(dbg);
 	close (dbg->fd);
+#else
+	cp_usb_fini(dbg);
+#endif
 	free (dbg);
 }
 
+int
+ccdbg_write(struct ccdbg *dbg, uint8_t mask, uint8_t value)
+{
+#if USE_KERNEL
+	return cccp_write(dbg, mask, value);
+#else
+	cp_usb_write(dbg, mask, value);
+	return 0;
+#endif
+}
+
+uint8_t
+ccdbg_read(struct ccdbg *dbg)
+{
+#if USE_KERNEL
+	return cccp_read_all(dbg);
+#else
+	return cp_usb_read(dbg);
+#endif
+}
+	
 void
 ccdbg_clock_1_0(struct ccdbg *dbg)
 {
 	ccdbg_quarter_clock(dbg);
 	assert(dbg->clock == 1);
-	cccp_write(dbg, CC_CLOCK, 0);
+	ccdbg_write(dbg, CC_CLOCK, 0);
 	dbg->clock = 0;
 	ccdbg_quarter_clock(dbg);
 }
@@ -75,7 +105,7 @@ ccdbg_clock_0_1(struct ccdbg *dbg)
 {
 	ccdbg_quarter_clock(dbg);
 	assert(dbg->clock == 0);
-	cccp_write(dbg, CC_CLOCK, CC_CLOCK);
+	ccdbg_write(dbg, CC_CLOCK, CC_CLOCK);
 	dbg->clock = 1;
 	ccdbg_quarter_clock(dbg);
 }
@@ -94,9 +124,9 @@ ccdbg_write_bit(struct ccdbg *dbg, uint8_t bit)
 	if (bit)
 		data |= CC_DATA;
 	ccdbg_half_clock(dbg);
-	cccp_write(dbg, CC_DATA|CC_CLOCK, data);
+	ccdbg_write(dbg, CC_DATA|CC_CLOCK, data);
 	ccdbg_half_clock(dbg);
-	cccp_write(dbg, CC_CLOCK, 0);
+	ccdbg_write(dbg, CC_CLOCK, 0);
 //	printf ("%d", bit);
 }
 
@@ -115,11 +145,11 @@ ccdbg_read_bit(struct ccdbg *dbg)
 	uint8_t	data;
 
 	ccdbg_half_clock(dbg);
-	cccp_write(dbg, CC_CLOCK, CC_CLOCK);
+	ccdbg_write(dbg, CC_CLOCK, CC_CLOCK);
 	ccdbg_half_clock(dbg);
-	cccp_write(dbg, CC_CLOCK, 0);
-	data = cccp_read(dbg, CC_DATA);
-	return data ? 1 : 0;
+	ccdbg_write(dbg, CC_CLOCK, 0);
+	data = ccdbg_read(dbg);
+	return (data & CC_DATA) ? 1 : 0;
 }
 
 uint8_t
diff --git a/ccdbg.c b/ccdbg.c
index 64cb768f..39fc1016 100644
--- a/ccdbg.c
+++ b/ccdbg.c
@@ -43,8 +43,8 @@ ccdbg_write_read(struct ccdbg *dbg, uint8_t set)
 {
 	uint8_t	get;
 
-	cccp_write(dbg, CC_DATA|CC_CLOCK|CC_RESET_N, set);
-	get = cccp_read_all(dbg);
+	ccdbg_write(dbg, CC_DATA|CC_CLOCK|CC_RESET_N, set);
+	get = ccdbg_read(dbg);
 	printf("%c %c %c -> %c %c %c\n",
 	       is_bit(set, 'C', CC_CLOCK),
 	       is_bit(set, 'D', CC_DATA),
@@ -59,6 +59,9 @@ ccdbg_write_read(struct ccdbg *dbg, uint8_t set)
 static void
 _ccdbg_debug_mode(struct ccdbg *dbg)
 {
+	printf ("#\n");
+	printf ("# Debug mode\n");
+	printf ("#\n");
 	ccdbg_write_read(dbg, CC_CLOCK|CC_DATA|CC_RESET_N);
 	ccdbg_write_read(dbg,          CC_DATA           );
 	ccdbg_write_read(dbg, CC_CLOCK|CC_DATA           );
@@ -76,6 +79,131 @@ _ccdbg_reset(struct ccdbg *dbg)
 	ccdbg_write_read(dbg, CC_CLOCK|CC_DATA|CC_RESET_N);
 }
 
+static void
+_ccdbg_send_bit(struct ccdbg *dbg, uint8_t bit)
+{
+	if (bit) bit = CC_DATA;
+	ccdbg_write_read(dbg, CC_CLOCK|bit|CC_RESET_N);
+	ccdbg_write_read(dbg,          bit|CC_RESET_N);
+}
+
+static void
+_ccdbg_send_byte(struct ccdbg *dbg, uint8_t byte)
+{
+	int bit;
+	printf ("#\n");
+	printf ("# Send Byte 0x%02x\n", byte);
+	printf ("#\n");
+	for (bit = 7; bit >= 0; bit--) {
+		_ccdbg_send_bit(dbg, (byte >> bit) & 1);
+		if (bit == 3)
+			printf ("\n");
+	}
+}
+
+static void
+_ccdbg_send_bits(struct ccdbg *dbg, int n, uint32_t bits)
+{
+	int bit;
+	printf ("#\n");
+	printf ("# Send %d bits 0x%08x\n", n, bits);
+	printf ("#\n");
+	for (bit = n - 1; bit >= 0; bit--) {
+		_ccdbg_send_bit(dbg, (bits >> bit) & 1);
+		if ((bit & 3) == 3)
+			printf ("\n");
+	}
+}
+
+static void
+_ccdbg_print_bits(int n, uint32_t bits)
+{
+	int	bit;
+
+	for (bit = n - 1; bit >= 0; bit--)
+		printf ("%d", (bits >> bit) & 1);
+}
+
+static uint32_t
+_ccdbg_read_bits(struct ccdbg *dbg, int bits)
+{
+	int		bit;
+	uint32_t	val = 0;
+	uint8_t		get;
+
+	printf ("#\n");
+	printf ("# Read %d bits\n", bits);
+	printf ("#\n");
+	for (bit = 0; bit < bits; bit++) {
+		      ccdbg_write_read(dbg, CC_CLOCK|CC_DATA|CC_RESET_N);
+		get = ccdbg_write_read(dbg,          CC_DATA|CC_RESET_N);
+		val <<= 1;
+		if (get & CC_DATA)
+			val |= 1;
+		if ((bit & 3) == 3)
+			printf ("\n");
+	}
+	printf ("#\n");
+	printf ("# Read "); _ccdbg_print_bits(bits, val); printf ("\n");
+	printf ("#\n");
+	return val;
+}
+
+static int
+_ccdbg_check_bits(uint32_t bits, uint8_t match)
+{
+	int	bit;
+
+	for (bit = 0; bit < 24; bit++)
+		if (((bits >> bit) & 0xff) == match)
+			return 1;
+	return 0;
+}
+
+static uint32_t
+_ccdbg_play(struct ccdbg *dbg, int num_sync, uint32_t sync)
+{
+	uint32_t	bits;
+	_ccdbg_debug_mode(dbg);
+	_ccdbg_send_bits(dbg, num_sync, sync);
+	_ccdbg_send_byte(dbg, CC_GET_CHIP_ID);
+	bits = _ccdbg_read_bits(dbg, 16);
+	_ccdbg_send_byte(dbg, CC_GET_CHIP_ID);
+	bits = _ccdbg_read_bits(dbg, 16);
+//	_ccdbg_send_byte(dbg, CC_READ_STATUS);
+	_ccdbg_reset(dbg);
+	if (_ccdbg_check_bits(bits, 0x11)) {
+		printf("#\n#match with %d bits 0x%08x\n#\n", num_sync, sync);
+		return 1;
+	}
+	return 0;
+}
+
+static int
+_ccdbg_play_num(struct ccdbg *dbg, int num)
+{
+	uint32_t	sync;
+	uint32_t	max;
+
+	printf ("#\n#play %d\n#\n", num);
+	max = (1 << num);
+	for (sync = 0; sync < max; sync++)
+		if (_ccdbg_play(dbg, num, sync))
+			return 1;
+	return 0;
+}
+
+static int
+_ccdbg_play_many(struct ccdbg *dbg, int max)
+{
+	int	num;
+
+	for (num = 0; num < max; num++)
+		if (_ccdbg_play_num(dbg, num))
+			return 1;
+	return 0;
+}
+
 static void
 ccdbg_manual(struct ccdbg *dbg, FILE *input)
 {
@@ -105,15 +233,19 @@ main (int argc, char **argv)
 	dbg = ccdbg_open("/dev/ttyUSB0");
 	if (!dbg)
 		exit (1);
-	ccdbg_manual(dbg, stdin);
 #if 0	
+	_ccdbg_play(dbg, 0, 0);
+	_ccdbg_play_many(dbg, 8);
+#endif
+	ccdbg_manual(dbg, stdin);
+#if 0
 	ccdbg_debug_mode(dbg);
 	status = ccdbg_read_status(dbg);
 	printf("Status: 0x%02x\n", status);
 	chip_id = ccdbg_get_chip_id(dbg);
 	printf("Chip id: 0x%04x\n", chip_id);
-#endif
 	_ccdbg_reset(dbg);
+#endif
 	ccdbg_close(dbg);
 	exit (0);
 }
diff --git a/ccdbg.h b/ccdbg.h
index 2085cbe0..19cf8fa3 100644
--- a/ccdbg.h
+++ b/ccdbg.h
@@ -30,17 +30,29 @@
 #include <sys/types.h>
 #include <sys/ioctl.h>
 #include <sys/stat.h>
+#undef USE_KERNEL
+#ifdef USE_KERNEL
 #include <cp2101.h>
-
 #define CC_DATA		CP2101_GPIO_MASK(0)
 #define CC_CLOCK	CP2101_GPIO_MASK(1)
 #define CC_RESET_N	CP2101_GPIO_MASK(2)
+#else
+#define CC_CLOCK	0x1
+#define CC_DATA		0x2
+#define CC_RESET_N	0x4
+#include <usb.h>
+#endif
+
 
 /* painfully slow for now */
-#define CC_CLOCK_US	(1 * 1000)
+#define CC_CLOCK_US	(100 * 1000)
 
 struct ccdbg {
+	usb_dev_handle	*usb_dev;
+	uint8_t	gpio;
+#ifdef USE_KERNEL
 	int	fd;
+#endif
 	uint8_t	debug_data;
 	int	clock;
 };
@@ -102,6 +114,12 @@ ccdbg_quarter_clock(struct ccdbg *dbg);
 void
 ccdbg_half_clock(struct ccdbg *dbg);
 
+int
+ccdbg_write(struct ccdbg *dbg, uint8_t mask, uint8_t value);
+
+uint8_t
+ccdbg_read(struct ccdbg *dbg);
+
 struct ccdbg *
 ccdbg_open(char *file);
 
@@ -135,4 +153,17 @@ ccdbg_cmd_write_read8(struct ccdbg *dbg, uint8_t cmd, uint8_t *data, int len);
 uint16_t
 ccdbg_cmd_write_read16(struct ccdbg *dbg, uint8_t cmd, uint8_t *data, int len);
 
+/* cp-usb.c */
+void
+cp_usb_init(struct ccdbg *dbg);
+
+void
+cp_usb_fini(struct ccdbg *dbg);
+
+void
+cp_usb_write(struct ccdbg *dbg, uint8_t mask, uint8_t value);
+
+uint8_t
+cp_usb_read(struct ccdbg *dbg);
+
 #endif /* _CCDBG_H_ */
diff --git a/chip_id b/chip_id
new file mode 100644
index 00000000..4343cec2
--- /dev/null
+++ b/chip_id
@@ -0,0 +1,114 @@
+#
+# Debug mode - drive RESET_N low for two clock cycles
+#
+C D R
+. D .
+C D .
+. D .
+C D .
+. D R
+
+#
+# GET_CHIP_ID
+
+C . R	0
+. . R
+C D R	1
+. D R
+C D R	1
+. D R
+C . R	0
+. . R
+
+C D R	1
+. D R
+C . R	0
+. . R
+C . R	0
+. . R
+C . R	0
+. . R
+
+#
+# start reading again
+
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
diff --git a/cp-usb.c b/cp-usb.c
new file mode 100644
index 00000000..3822e8cd
--- /dev/null
+++ b/cp-usb.c
@@ -0,0 +1,140 @@
+/*
+ * Copyright © 2008 Keith Packard <keithp@keithp.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+#include "ccdbg.h"
+#include <usb.h>
+
+#define CP2101_UART	0x00
+#define UART_ENABLE	0x0001
+#define UART_DISABLE	0x0000
+#define REQTYPE_HOST_TO_DEVICE  0x41
+#define REQTYPE_DEVICE_TO_HOST  0xc1
+
+static int
+cp_usb_gpio_get(struct ccdbg *dbg, uint8_t *gpio_get)
+{
+	return usb_control_msg(dbg->usb_dev,		/* dev */
+			       0xc0,			/* request */
+			       0xff,			/* requesttype */
+			       0x00c2,			/* value */
+			       0,			/* index */
+			       (char *) gpio_get,	/* bytes */
+			       1,			/* size */
+			       300);			/* timeout */
+}
+
+static int
+cp_usb_gpio_set(struct ccdbg *dbg, uint8_t mask, uint8_t value)
+{
+	uint16_t gpio_set = ((uint16_t) value << 8) | mask;
+
+	return usb_control_msg(dbg->usb_dev,		/* dev */
+			       0x40,			/* request */
+			       0xff,			/* requesttype */
+			       0x37e1,			/* value */
+			       gpio_set,		/* index */
+			       NULL,			/* bytes */
+			       0,			/* size */
+			       300);			/* timeout */
+}
+
+static int
+cp_usb_uart_enable_disable(struct ccdbg *dbg, uint16_t enable)
+{
+	return usb_control_msg(dbg->usb_dev,
+			       CP2101_UART,
+			       REQTYPE_HOST_TO_DEVICE,
+			       enable,
+			       0,
+			       NULL,
+			       0,
+			       300);
+}
+
+void
+cp_usb_init(struct ccdbg *dbg)
+{
+	usb_dev_handle *dev_handle;
+	struct usb_device *dev;
+	struct usb_bus *bus, *busses;
+	int interface;
+	int ret;
+	uint8_t gpio;
+	
+	usb_init();
+	usb_find_busses();
+	usb_find_devices();
+	
+	busses = usb_get_busses();
+	for (bus = busses; bus; bus = bus->next) {
+		for (dev = bus->devices; dev; dev = dev->next) {
+			if (dev->descriptor.idVendor == 0x10c4 &&
+			    dev->descriptor.idProduct == 0xea60)
+				break;
+		}
+		if (dev)
+			break;
+	}
+	if (!dev){
+		perror("No CP2103 found\n");
+		exit(1);
+	}
+	interface = 0;
+	dev_handle = usb_open(dev);
+	usb_detach_kernel_driver_np(dev_handle, interface);
+	usb_claim_interface(dev_handle, interface);
+	dbg->usb_dev = dev_handle;
+	ret = cp_usb_uart_enable_disable(dbg, UART_DISABLE);
+	dbg->gpio = 0xf;
+	ret = cp_usb_gpio_set(dbg, 0xf, dbg->gpio);
+	ret = cp_usb_gpio_get(dbg, &gpio);
+}
+
+void
+cp_usb_fini(struct ccdbg *dbg)
+{
+	cp_usb_uart_enable_disable(dbg, UART_DISABLE);
+	usb_close(dbg->usb_dev);
+}
+
+void
+cp_usb_write(struct ccdbg *dbg, uint8_t mask, uint8_t value)
+{
+	uint8_t	new_gpio;
+	int ret;
+
+	new_gpio = (dbg->gpio & ~mask) | (value & mask);
+	if (new_gpio != dbg->gpio) {
+		ret = cp_usb_gpio_set(dbg, new_gpio ^ dbg->gpio, new_gpio);
+		if (ret < 0)
+			perror("gpio_set");
+		dbg->gpio = new_gpio;
+	}
+}
+
+uint8_t
+cp_usb_read(struct ccdbg *dbg)
+{
+	int ret;
+	uint8_t gpio;
+
+	ret = cp_usb_gpio_get(dbg, &gpio);
+	if (ret < 0)
+		perror("gpio_set");
+	return gpio;
+}
diff --git a/debug_mode b/debug_mode
new file mode 100644
index 00000000..fe25bfef
--- /dev/null
+++ b/debug_mode
@@ -0,0 +1,11 @@
+#
+# Debug mode - drive RESET_N low for two clock cycles
+#
+
+C D R
+. D .
+C D .
+. D .
+C D .
+. D R
+
diff --git a/get_pc b/get_pc
new file mode 100644
index 00000000..13bcba15
--- /dev/null
+++ b/get_pc
@@ -0,0 +1,71 @@
+#
+# Debug mode - drive RESET_N low for two clock cycles
+#
+C D R
+. D .
+C D .
+. D .
+C D .
+. D R
+
+#
+# GET_STATUS
+#
+
+C . R	0
+. . R
+C . R	0
+. . R
+C D R	1
+. D R
+C . R	0
+. . R
+
+C D R	1
+. D R
+C . R	0
+. . R
+C . R	0
+. . R
+C . R	0
+. . R
+
+#
+# Now read for a while
+#
+
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
diff --git a/get_status b/get_status
new file mode 100644
index 00000000..3ca4a303
--- /dev/null
+++ b/get_status
@@ -0,0 +1,71 @@
+#
+# Debug mode - drive RESET_N low for two clock cycles
+#
+C D R
+. D .
+C D .
+. D .
+C D .
+. D R
+
+#
+# GET_STATUS
+#
+
+C . R	0
+. . R
+C . R	0
+. . R
+C D R	1
+. D R
+C D R	1
+. D R
+
+C . R	0
+. . R
+C D R	1
+. D R
+C . R	0
+. . R
+C . R	0
+. . R
+
+#
+# Now read for a while
+#
+
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
diff --git a/half_phase b/half_phase
new file mode 100644
index 00000000..3ca4a303
--- /dev/null
+++ b/half_phase
@@ -0,0 +1,71 @@
+#
+# Debug mode - drive RESET_N low for two clock cycles
+#
+C D R
+. D .
+C D .
+. D .
+C D .
+. D R
+
+#
+# GET_STATUS
+#
+
+C . R	0
+. . R
+C . R	0
+. . R
+C D R	1
+. D R
+C D R	1
+. D R
+
+C . R	0
+. . R
+C D R	1
+. D R
+C . R	0
+. . R
+C . R	0
+. . R
+
+#
+# Now read for a while
+#
+
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
diff --git a/in b/in
new file mode 100644
index 00000000..93341e32
--- /dev/null
+++ b/in
@@ -0,0 +1,146 @@
+#
+# Debug mode - drive RESET_N low for two clock cycles
+#
+C D R
+. D .
+C D .
+. D .
+C D .
+. D .
+
+#C D R
+#. D R
+#C D R
+#. D R
+#C D R
+#. D R
+#C D R
+#. D R
+
+#
+# Ok, we're in debug mode now
+#
+
+#
+# GET_CHIP_ID
+
+#C . R	0
+#. . R
+#C D R	1
+#. D R
+#C D R	1
+#. D R
+#C . R	0
+#. . R
+#
+#C D R	1
+#. D R
+#C . R	0
+#. . R
+#C . R	0
+#. . R
+#C . R	0
+#. . R
+#
+##
+## Read the chip id
+##
+#
+#C D R
+#. D R
+#C D R
+#. D R
+#C D R
+#. D R
+#C D R
+#. D R
+#
+#C D R
+#. D R
+#C D R
+#. D R
+#C D R
+#. D R
+#C D R
+#. D R
+#
+#C D R
+#. D R
+#C D R
+#. D R
+#C D R
+#. D R
+#C D R
+#. D R
+#
+#C D R
+#. D R
+#C D R
+#. D R
+#C D R
+#. D R
+#C D R
+#. D R
+#
+
+#
+# GET_STATUS
+#
+
+C . R	0
+. . R
+C . R	0
+. . R
+C D R	1
+. D R
+C D R	1
+. D R
+
+C . R	0
+. . R
+C D R	1
+. D R
+C . R	0
+. . R
+C . R	0
+. . R
+
+#
+# Now read for a while
+#
+
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
diff --git a/p1_1 b/p1_1
new file mode 100644
index 00000000..05ded5cb
--- /dev/null
+++ b/p1_1
@@ -0,0 +1,349 @@
+#
+# Halt 0x44
+#
+
+C . R	0
+. . R
+C D R	1
+. D R
+C . R	0
+. . R
+C . R	0
+. . R
+
+C . R	0
+. . R
+C D R	1
+. D R
+C . R	0
+. . R
+C . R	0
+. . R
+
+# status byte
+
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+
+#
+# DEBUG_INSTR
+#
+
+C . R	0
+. . R
+C D R	1
+. D R
+C . R	0
+. . R
+C D R	1
+. D R
+
+C . R	0
+. . R
+C D R	1
+. D R
+C D R	1
+. D R
+C D R	1
+. D R
+
+# MOV 0xfe, 0x02
+
+# 0x75 0x02 0xfe
+
+# 0x75
+C . R	0
+. . R
+C D R	1
+. D R
+C D R	1
+. D R
+C D R	1
+. D R
+
+C . R	0
+. . R
+C D R	1
+. D R
+C . R	0
+. . R
+C D R	1
+. D R
+
+# 0xfe
+C D R	1
+. D R
+C D R	1
+. D R
+C D R	1
+. D R
+C D R	1
+. D R
+
+C D R	1
+. D R
+C D R	1
+. D R
+C D R	1
+. D R
+C . R	0
+. . R
+
+# 0x02
+C . R	0
+. . R
+C . R	0
+. . R
+C . R	0
+. . R
+C . R	0
+. . R
+
+C . R	0
+. . R
+C . R	0
+. . R
+C D R	1
+. D R
+C . R	0
+. . R
+
+# status byte
+
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+
+#
+# DEBUG_INSTR
+#
+
+C . R	0
+. . R
+C D R	1
+. D R
+C . R	0
+. . R
+C D R	1
+. D R
+
+C . R	0
+. . R
+C D R	1
+. D R
+C D R	1
+. D R
+C D R	1
+. D R
+
+# MOV 0x90, 0xfd
+# 0x75 0xfd 0x90
+
+# 0x75
+C . R	0
+. . R
+C D R	1
+. D R
+C D R	1
+. D R
+C D R	1
+. D R
+
+C . R	0
+. . R
+C D R	1
+. D R
+C . R	0
+. . R
+C D R	1
+. D R
+
+# 0x90
+C D R	1
+. D R
+C . R	0
+. . R
+C . R	0
+. . R
+C D R	1
+. D R
+
+C . R	0
+. . R
+C . R	0
+. . R
+C . R	0
+. . R
+C . R	0
+. . R
+
+# 0xff
+C D R	1
+. D R
+C D R	1
+. D R
+C D R	1
+. D R
+C D R	1
+. D R
+
+C D R	1
+. D R
+C D R	1
+. D R
+C D R	1
+. D R
+C D R	1
+. D R
+
+# status byte
+
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+
+#
+# DEBUG_INSTR
+#
+
+C . R	0
+. . R
+C D R	1
+. D R
+C . R	0
+. . R
+C D R	1
+. D R
+
+C . R	0
+. . R
+C D R	1
+. D R
+C D R	1
+. D R
+C D R	1
+. D R
+
+# MOV 0x90, 0xfd
+# 0x75 0xfd 0x90
+
+# 0x75
+C . R	0
+. . R
+C D R	1
+. D R
+C D R	1
+. D R
+C D R	1
+. D R
+
+C . R	0
+. . R
+C D R	1
+. D R
+C . R	0
+. . R
+C D R	1
+. D R
+
+# 0x90
+C D R	1
+. D R
+C . R	0
+. . R
+C . R	0
+. . R
+C D R	1
+. D R
+
+C . R	0
+. . R
+C . R	0
+. . R
+C . R	0
+. . R
+C . R	0
+. . R
+
+# 0xfd
+C D R	1
+. D R
+C D R	1
+. D R
+C D R	1
+. D R
+C D R	1
+. D R
+
+C D R	1
+. D R
+C D R	1
+. D R
+C . R	0
+. . R
+C D R	1
+. D R
+
+# status byte
+
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+
diff --git a/read_status b/read_status
new file mode 100644
index 00000000..3ca4a303
--- /dev/null
+++ b/read_status
@@ -0,0 +1,71 @@
+#
+# Debug mode - drive RESET_N low for two clock cycles
+#
+C D R
+. D .
+C D .
+. D .
+C D .
+. D R
+
+#
+# GET_STATUS
+#
+
+C . R	0
+. . R
+C . R	0
+. . R
+C D R	1
+. D R
+C D R	1
+. D R
+
+C . R	0
+. . R
+C D R	1
+. D R
+C . R	0
+. . R
+C . R	0
+. . R
+
+#
+# Now read for a while
+#
+
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
diff --git a/reset b/reset
new file mode 100644
index 00000000..a32c8bec
--- /dev/null
+++ b/reset
@@ -0,0 +1,5 @@
+# reset
+C D R
+C D R
+C D R
+C D R
diff --git a/wr_config b/wr_config
new file mode 100644
index 00000000..1ee31623
--- /dev/null
+++ b/wr_config
@@ -0,0 +1,116 @@
+#
+# Debug mode - drive RESET_N low for two clock cycles
+#
+C D R
+. D .
+C D .
+. D .
+C D .
+. D R
+
+#
+# WR_CONFIG
+#
+
+C . R	0
+. . R
+C . R	0
+. . R
+C . R	0
+. . R
+C D R	1
+. D R
+
+C D R	1
+. D R
+C D R	1
+. D R
+C . R	0
+. . R
+C D R	1
+. D R
+
+C . R	0
+. . R
+C . R	0
+. . R
+C . R	0
+. . R
+C . R	0
+. . R
+
+C D R	1
+. D R
+C . R	0
+. . R
+C . R	0
+. . R
+C . R	0
+. . R
+
+#
+# Now read for a while
+#
+
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+
+
+#
+# RD_CONFIG
+#
+
+C . R	0
+. . R
+C . R	0
+. . R
+C D R	1
+. D R
+C . R	0
+. . R
+
+C . R	0
+. . R
+C D R	1
+. D R
+C . R	0
+. . R
+C . R	0
+. . R
+
+#
+# Now read for a while
+#
+
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R
+C D R
+. D R