Fix to optiboot infinite loop problem.

Explicitly setting R1 to 0 so that the watchdog timer is properly initializing, preventing it from timing out and resetting the processor.

http://code.google.com/p/optiboot/issues/detail?id=26
http://code.google.com/p/arduino/issues/detail?id=446

3 files changed, 265 insertions, 261 deletions

diff --git a/bootloaders/optiboot/optiboot.c b/bootloaders/optiboot/optiboot.c
index af92995..c7d817a 100644
--- a/bootloaders/optiboot/optiboot.c
+++ b/bootloaders/optiboot/optiboot.c
@@ -213,7 +213,7 @@ int main(void) {
   // If not, uncomment the following instructions:
   // cli();
   // SP=RAMEND;  // This is done by hardware reset
-  // asm volatile ("clr __zero_reg__");
+  asm volatile ("clr __zero_reg__");
 
   uint8_t ch;
 
diff --git a/bootloaders/optiboot/optiboot_atmega328.hex b/bootloaders/optiboot/optiboot_atmega328.hex
index b1c8567..e8aa31c 100644
--- a/bootloaders/optiboot/optiboot_atmega328.hex
+++ b/bootloaders/optiboot/optiboot_atmega328.hex
@@ -1,33 +1,33 @@
-:107E000085E08093810082E08093C00088E18093C8

-:107E1000C10086E08093C20080E18093C40084B7F3

-:107E200014BE81FFD0D08DE0C8D0259A86E020E333

-:107E30003CEF91E0309385002093840096BBB09B8B

-:107E4000FECF1D9AA8958150A9F7DD24D394A5E013

-:107E5000EA2EF1E1FF2EA4D0813421F481E0BED0DE

-:107E600083E024C0823411F484E103C0853419F422

-:107E700085E0B4D08AC08535A1F492D0082F10E0F7

-:107E800010930102009300028BD090E0982F882776

-:107E9000802B912B880F991F9093010280930002F1

-:107EA00073C0863529F484E099D080E071D06DC02C

-:107EB000843609F043C07CD0E0910002F0910102C9

-:107EC00083E080935700E895C0E0D1E069D08993C2

-:107ED000809102028150809302028823B9F778D002

-:107EE00007B600FCFDCF4091000250910102A0E0D6

-:107EF000B1E02C9130E011968C91119790E0982F81

-:107F00008827822B932B1296FA010C01D0925700EE

-:107F1000E89511244E5F5F4FF1E0A038BF0749F7A5

-:107F2000E0910002F0910102E0925700E89507B657

-:107F300000FCFDCFF0925700E89527C08437B9F4D4

-:107F400037D046D0E0910002F09101023196F093D3

-:107F50000102E09300023197E4918E2F19D08091B5

-:107F60000202815080930202882361F70EC0853798

-:107F700039F42ED08EE10CD085E90AD08FE096CF6F

-:107F8000813511F488E019D023D080E101D063CF8E

-:107F9000982F8091C00085FFFCCF9093C600089574

-:107FA000A8958091C00087FFFCCF8091C6000895FE

-:107FB000F7DFF6DF80930202F3CFE0E6F0E098E12E

-:107FC00090838083089580E0F8DFEE27FF270994EF

-:107FD000E7DF803209F0F7DF84E1DACF1F93182F53

-:0C7FE000DFDF1150E9F7F4DF1F91089576

+:107E0000112485E08093810082E08093C00088E1A6

+:107E10008093C10086E08093C20080E18093C4001B

+:107E200084B714BE81FFD0D08DE0C8D0259A86E0FB

+:107E300020E33CEF91E0309385002093840096BBD3

+:107E4000B09BFECF1D9AA8958150A9F7DD24D3944D

+:107E5000A5E0EA2EF1E1FF2EA4D0813421F481E0E7

+:107E6000BED083E024C0823411F484E103C08534A1

+:107E700019F485E0B4D08AC08535A1F492D0082FDA

+:107E800010E010930102009300028BD090E0982F35

+:107E90008827802B912B880F991F90930102809344

+:107EA000000273C0863529F484E099D080E071D057

+:107EB0006DC0843609F043C07CD0E0910002F0919F

+:107EC000010283E080935700E895C0E0D1E069D0DB

+:107ED0008993809102028150809302028823B9F72E

+:107EE00078D007B600FCFDCF40910002509101020E

+:107EF000A0E0B1E02C9130E011968C91119790E0C8

+:107F0000982F8827822B932B1296FA010C01D0927E

+:107F10005700E89511244E5F5F4FF1E0A038BF078E

+:107F200049F7E0910002F0910102E0925700E895D4

+:107F300007B600FCFDCFF0925700E89527C08437C4

+:107F4000B9F437D046D0E0910002F09101023196A9

+:107F5000F0930102E09300023197E4918E2F19D043

+:107F600080910202815080930202882361F70EC043

+:107F7000853739F42ED08EE10CD085E90AD08FE018

+:107F800096CF813511F488E019D023D080E101D05B

+:107F900063CF982F8091C00085FFFCCF9093C600DF

+:107FA0000895A8958091C00087FFFCCF8091C600FE

+:107FB0000895F7DFF6DF80930202F3CFE0E6F0E00A

+:107FC00098E190838083089580E0F8DFEE27FF2713

+:107FD0000994E7DF803209F0F7DF84E1DACF1F93FD

+:0E7FE000182FDFDF1150E9F7F4DF1F9108952D

 :0400000300007E007B

 :00000001FF

diff --git a/bootloaders/optiboot/optiboot_atmega328.lst b/bootloaders/optiboot/optiboot_atmega328.lst
index 888871d..dd879dc 100644
--- a/bootloaders/optiboot/optiboot_atmega328.lst
+++ b/bootloaders/optiboot/optiboot_atmega328.lst
@@ -3,25 +3,25 @@ optiboot_atmega328.elf:     file format elf32-avr
 
 Sections:
 Idx Name          Size      VMA       LMA       File off  Algn
-  0 .text         000001ec  00007e00  00007e00  00000054  2**1
+  0 .text         000001ee  00007e00  00007e00  00000054  2**1
                   CONTENTS, ALLOC, LOAD, READONLY, CODE
-  1 .debug_aranges 00000028  00000000  00000000  00000240  2**0
+  1 .debug_aranges 00000028  00000000  00000000  00000242  2**0
                   CONTENTS, READONLY, DEBUGGING
-  2 .debug_pubnames 0000006a  00000000  00000000  00000268  2**0
+  2 .debug_pubnames 0000006a  00000000  00000000  0000026a  2**0
                   CONTENTS, READONLY, DEBUGGING
-  3 .debug_info   00000269  00000000  00000000  000002d2  2**0
+  3 .debug_info   00000269  00000000  00000000  000002d4  2**0
                   CONTENTS, READONLY, DEBUGGING
-  4 .debug_abbrev 00000196  00000000  00000000  0000053b  2**0
+  4 .debug_abbrev 00000196  00000000  00000000  0000053d  2**0
                   CONTENTS, READONLY, DEBUGGING
-  5 .debug_line   000003d3  00000000  00000000  000006d1  2**0
+  5 .debug_line   000003db  00000000  00000000  000006d3  2**0
                   CONTENTS, READONLY, DEBUGGING
-  6 .debug_frame  00000090  00000000  00000000  00000aa4  2**2
+  6 .debug_frame  00000090  00000000  00000000  00000ab0  2**2
                   CONTENTS, READONLY, DEBUGGING
-  7 .debug_str    00000135  00000000  00000000  00000b34  2**0
+  7 .debug_str    00000124  00000000  00000000  00000b40  2**0
                   CONTENTS, READONLY, DEBUGGING
-  8 .debug_loc    000001d1  00000000  00000000  00000c69  2**0
+  8 .debug_loc    000001d1  00000000  00000000  00000c64  2**0
                   CONTENTS, READONLY, DEBUGGING
-  9 .debug_ranges 00000068  00000000  00000000  00000e3a  2**0
+  9 .debug_ranges 00000068  00000000  00000000  00000e35  2**0
                   CONTENTS, READONLY, DEBUGGING
 
 Disassembly of section .text:
@@ -33,488 +33,492 @@ Disassembly of section .text:
 #endif
 /* main program starts here */
 int main(void) {
-    7e00:	85 e0       	ldi	r24, 0x05	; 5
-    7e02:	80 93 81 00 	sts	0x0081, r24
+    7e00:	11 24       	eor	r1, r1
+
+  uint8_t ch;
+
 #if LED_START_FLASHES > 0
   // Set up Timer 1 for timeout counter
   TCCR1B = _BV(CS12) | _BV(CS10); // div 1024
+    7e02:	85 e0       	ldi	r24, 0x05	; 5
+    7e04:	80 93 81 00 	sts	0x0081, r24
 #endif
 #ifndef SOFT_UART
   UCSR0A = _BV(U2X0); //Double speed mode USART0
-    7e06:	82 e0       	ldi	r24, 0x02	; 2
-    7e08:	80 93 c0 00 	sts	0x00C0, r24
+    7e08:	82 e0       	ldi	r24, 0x02	; 2
+    7e0a:	80 93 c0 00 	sts	0x00C0, r24
   UCSR0B = _BV(RXEN0) | _BV(TXEN0);
-    7e0c:	88 e1       	ldi	r24, 0x18	; 24
-    7e0e:	80 93 c1 00 	sts	0x00C1, r24
+    7e0e:	88 e1       	ldi	r24, 0x18	; 24
+    7e10:	80 93 c1 00 	sts	0x00C1, r24
   UCSR0C = _BV(UCSZ00) | _BV(UCSZ01);
-    7e12:	86 e0       	ldi	r24, 0x06	; 6
-    7e14:	80 93 c2 00 	sts	0x00C2, r24
+    7e14:	86 e0       	ldi	r24, 0x06	; 6
+    7e16:	80 93 c2 00 	sts	0x00C2, r24
   UBRR0L = (uint8_t)( (F_CPU + BAUD_RATE * 4L) / (BAUD_RATE * 8L) - 1 );
-    7e18:	80 e1       	ldi	r24, 0x10	; 16
-    7e1a:	80 93 c4 00 	sts	0x00C4, r24
+    7e1a:	80 e1       	ldi	r24, 0x10	; 16
+    7e1c:	80 93 c4 00 	sts	0x00C4, r24
 #endif
 
   // Adaboot no-wait mod
   ch = MCUSR;
-    7e1e:	84 b7       	in	r24, 0x34	; 52
+    7e20:	84 b7       	in	r24, 0x34	; 52
   MCUSR = 0;
-    7e20:	14 be       	out	0x34, r1	; 52
+    7e22:	14 be       	out	0x34, r1	; 52
   if (!(ch & _BV(EXTRF))) appStart();
-    7e22:	81 ff       	sbrs	r24, 1
-    7e24:	d0 d0       	rcall	.+416    	; 0x7fc6 <appStart>
+    7e24:	81 ff       	sbrs	r24, 1
+    7e26:	d0 d0       	rcall	.+416    	; 0x7fc8 <appStart>
 
   // Set up watchdog to trigger after 500ms
   watchdogConfig(WATCHDOG_500MS);
-    7e26:	8d e0       	ldi	r24, 0x0D	; 13
-    7e28:	c8 d0       	rcall	.+400    	; 0x7fba <watchdogConfig>
+    7e28:	8d e0       	ldi	r24, 0x0D	; 13
+    7e2a:	c8 d0       	rcall	.+400    	; 0x7fbc <watchdogConfig>
 
   /* Set LED pin as output */
   LED_DDR |= _BV(LED);
-    7e2a:	25 9a       	sbi	0x04, 5	; 4
-    7e2c:	86 e0       	ldi	r24, 0x06	; 6
+    7e2c:	25 9a       	sbi	0x04, 5	; 4
+    7e2e:	86 e0       	ldi	r24, 0x06	; 6
 }
 
 #if LED_START_FLASHES > 0
 void flash_led(uint8_t count) {
   do {
     TCNT1 = -(F_CPU/(1024*16));
-    7e2e:	20 e3       	ldi	r18, 0x30	; 48
-    7e30:	3c ef       	ldi	r19, 0xFC	; 252
+    7e30:	20 e3       	ldi	r18, 0x30	; 48
+    7e32:	3c ef       	ldi	r19, 0xFC	; 252
     TIFR1 = _BV(TOV1);
-    7e32:	91 e0       	ldi	r25, 0x01	; 1
+    7e34:	91 e0       	ldi	r25, 0x01	; 1
 }
 
 #if LED_START_FLASHES > 0
 void flash_led(uint8_t count) {
   do {
     TCNT1 = -(F_CPU/(1024*16));
-    7e34:	30 93 85 00 	sts	0x0085, r19
-    7e38:	20 93 84 00 	sts	0x0084, r18
+    7e36:	30 93 85 00 	sts	0x0085, r19
+    7e3a:	20 93 84 00 	sts	0x0084, r18
     TIFR1 = _BV(TOV1);
-    7e3c:	96 bb       	out	0x16, r25	; 22
+    7e3e:	96 bb       	out	0x16, r25	; 22
     while(!(TIFR1 & _BV(TOV1)));
-    7e3e:	b0 9b       	sbis	0x16, 0	; 22
-    7e40:	fe cf       	rjmp	.-4      	; 0x7e3e <main+0x3e>
+    7e40:	b0 9b       	sbis	0x16, 0	; 22
+    7e42:	fe cf       	rjmp	.-4      	; 0x7e40 <main+0x40>
     LED_PIN |= _BV(LED);
-    7e42:	1d 9a       	sbi	0x03, 5	; 3
+    7e44:	1d 9a       	sbi	0x03, 5	; 3
   return getch();
 }
 
 // Watchdog functions. These are only safe with interrupts turned off.
 void watchdogReset() {
   __asm__ __volatile__ (
-    7e44:	a8 95       	wdr
+    7e46:	a8 95       	wdr
     TCNT1 = -(F_CPU/(1024*16));
     TIFR1 = _BV(TOV1);
     while(!(TIFR1 & _BV(TOV1)));
     LED_PIN |= _BV(LED);
     watchdogReset();
   } while (--count);
-    7e46:	81 50       	subi	r24, 0x01	; 1
-    7e48:	a9 f7       	brne	.-22     	; 0x7e34 <main+0x34>
+    7e48:	81 50       	subi	r24, 0x01	; 1
+    7e4a:	a9 f7       	brne	.-22     	; 0x7e36 <main+0x36>
     /* get character from UART */
     ch = getch();
 
     if(ch == STK_GET_PARAMETER) {
       // GET PARAMETER returns a generic 0x03 reply - enough to keep Avrdude happy
       getNch(1);
-    7e4a:	dd 24       	eor	r13, r13
-    7e4c:	d3 94       	inc	r13
+    7e4c:	dd 24       	eor	r13, r13
+    7e4e:	d3 94       	inc	r13
         boot_page_fill((uint16_t)(void*)addrPtr,a);
         addrPtr += 2;
       } while (--ch);
       
       // Write from programming buffer
       boot_page_write((uint16_t)(void*)address);
-    7e4e:	a5 e0       	ldi	r26, 0x05	; 5
-    7e50:	ea 2e       	mov	r14, r26
+    7e50:	a5 e0       	ldi	r26, 0x05	; 5
+    7e52:	ea 2e       	mov	r14, r26
       boot_spm_busy_wait();
 
 #if defined(RWWSRE)
       // Reenable read access to flash
       boot_rww_enable();
-    7e52:	f1 e1       	ldi	r31, 0x11	; 17
-    7e54:	ff 2e       	mov	r15, r31
+    7e54:	f1 e1       	ldi	r31, 0x11	; 17
+    7e56:	ff 2e       	mov	r15, r31
 #endif
 
   /* Forever loop */
   for (;;) {
     /* get character from UART */
     ch = getch();
-    7e56:	a4 d0       	rcall	.+328    	; 0x7fa0 <getch>
+    7e58:	a4 d0       	rcall	.+328    	; 0x7fa2 <getch>
 
     if(ch == STK_GET_PARAMETER) {
-    7e58:	81 34       	cpi	r24, 0x41	; 65
-    7e5a:	21 f4       	brne	.+8      	; 0x7e64 <main+0x64>
+    7e5a:	81 34       	cpi	r24, 0x41	; 65
+    7e5c:	21 f4       	brne	.+8      	; 0x7e66 <main+0x66>
       // GET PARAMETER returns a generic 0x03 reply - enough to keep Avrdude happy
       getNch(1);
-    7e5c:	81 e0       	ldi	r24, 0x01	; 1
-    7e5e:	be d0       	rcall	.+380    	; 0x7fdc <verifySpace+0xc>
+    7e5e:	81 e0       	ldi	r24, 0x01	; 1
+    7e60:	be d0       	rcall	.+380    	; 0x7fde <verifySpace+0xc>
       putch(0x03);
-    7e60:	83 e0       	ldi	r24, 0x03	; 3
-    7e62:	24 c0       	rjmp	.+72     	; 0x7eac <main+0xac>
+    7e62:	83 e0       	ldi	r24, 0x03	; 3
+    7e64:	24 c0       	rjmp	.+72     	; 0x7eae <main+0xae>
     }
     else if(ch == STK_SET_DEVICE) {
-    7e64:	82 34       	cpi	r24, 0x42	; 66
-    7e66:	11 f4       	brne	.+4      	; 0x7e6c <main+0x6c>
+    7e66:	82 34       	cpi	r24, 0x42	; 66
+    7e68:	11 f4       	brne	.+4      	; 0x7e6e <main+0x6e>
       // SET DEVICE is ignored
       getNch(20);
-    7e68:	84 e1       	ldi	r24, 0x14	; 20
-    7e6a:	03 c0       	rjmp	.+6      	; 0x7e72 <main+0x72>
+    7e6a:	84 e1       	ldi	r24, 0x14	; 20
+    7e6c:	03 c0       	rjmp	.+6      	; 0x7e74 <main+0x74>
     }
     else if(ch == STK_SET_DEVICE_EXT) {
-    7e6c:	85 34       	cpi	r24, 0x45	; 69
-    7e6e:	19 f4       	brne	.+6      	; 0x7e76 <main+0x76>
+    7e6e:	85 34       	cpi	r24, 0x45	; 69
+    7e70:	19 f4       	brne	.+6      	; 0x7e78 <main+0x78>
       // SET DEVICE EXT is ignored
       getNch(5);
-    7e70:	85 e0       	ldi	r24, 0x05	; 5
-    7e72:	b4 d0       	rcall	.+360    	; 0x7fdc <verifySpace+0xc>
-    7e74:	8a c0       	rjmp	.+276    	; 0x7f8a <main+0x18a>
+    7e72:	85 e0       	ldi	r24, 0x05	; 5
+    7e74:	b4 d0       	rcall	.+360    	; 0x7fde <verifySpace+0xc>
+    7e76:	8a c0       	rjmp	.+276    	; 0x7f8c <main+0x18c>
     }
     else if(ch == STK_LOAD_ADDRESS) {
-    7e76:	85 35       	cpi	r24, 0x55	; 85
-    7e78:	a1 f4       	brne	.+40     	; 0x7ea2 <main+0xa2>
+    7e78:	85 35       	cpi	r24, 0x55	; 85
+    7e7a:	a1 f4       	brne	.+40     	; 0x7ea4 <main+0xa4>
       // LOAD ADDRESS
       address = getch();
-    7e7a:	92 d0       	rcall	.+292    	; 0x7fa0 <getch>
-    7e7c:	08 2f       	mov	r16, r24
-    7e7e:	10 e0       	ldi	r17, 0x00	; 0
-    7e80:	10 93 01 02 	sts	0x0201, r17
-    7e84:	00 93 00 02 	sts	0x0200, r16
+    7e7c:	92 d0       	rcall	.+292    	; 0x7fa2 <getch>
+    7e7e:	08 2f       	mov	r16, r24
+    7e80:	10 e0       	ldi	r17, 0x00	; 0
+    7e82:	10 93 01 02 	sts	0x0201, r17
+    7e86:	00 93 00 02 	sts	0x0200, r16
       address = (address & 0xff) | (getch() << 8);
-    7e88:	8b d0       	rcall	.+278    	; 0x7fa0 <getch>
-    7e8a:	90 e0       	ldi	r25, 0x00	; 0
-    7e8c:	98 2f       	mov	r25, r24
-    7e8e:	88 27       	eor	r24, r24
-    7e90:	80 2b       	or	r24, r16
-    7e92:	91 2b       	or	r25, r17
+    7e8a:	8b d0       	rcall	.+278    	; 0x7fa2 <getch>
+    7e8c:	90 e0       	ldi	r25, 0x00	; 0
+    7e8e:	98 2f       	mov	r25, r24
+    7e90:	88 27       	eor	r24, r24
+    7e92:	80 2b       	or	r24, r16
+    7e94:	91 2b       	or	r25, r17
       address += address; // Convert from word address to byte address
-    7e94:	88 0f       	add	r24, r24
-    7e96:	99 1f       	adc	r25, r25
-    7e98:	90 93 01 02 	sts	0x0201, r25
-    7e9c:	80 93 00 02 	sts	0x0200, r24
-    7ea0:	73 c0       	rjmp	.+230    	; 0x7f88 <main+0x188>
+    7e96:	88 0f       	add	r24, r24
+    7e98:	99 1f       	adc	r25, r25
+    7e9a:	90 93 01 02 	sts	0x0201, r25
+    7e9e:	80 93 00 02 	sts	0x0200, r24
+    7ea2:	73 c0       	rjmp	.+230    	; 0x7f8a <main+0x18a>
       verifySpace();
     }
     else if(ch == STK_UNIVERSAL) {
-    7ea2:	86 35       	cpi	r24, 0x56	; 86
-    7ea4:	29 f4       	brne	.+10     	; 0x7eb0 <main+0xb0>
+    7ea4:	86 35       	cpi	r24, 0x56	; 86
+    7ea6:	29 f4       	brne	.+10     	; 0x7eb2 <main+0xb2>
       // UNIVERSAL command is ignored
       getNch(4);
-    7ea6:	84 e0       	ldi	r24, 0x04	; 4
-    7ea8:	99 d0       	rcall	.+306    	; 0x7fdc <verifySpace+0xc>
+    7ea8:	84 e0       	ldi	r24, 0x04	; 4
+    7eaa:	99 d0       	rcall	.+306    	; 0x7fde <verifySpace+0xc>
       putch(0x00);
-    7eaa:	80 e0       	ldi	r24, 0x00	; 0
-    7eac:	71 d0       	rcall	.+226    	; 0x7f90 <putch>
-    7eae:	6d c0       	rjmp	.+218    	; 0x7f8a <main+0x18a>
+    7eac:	80 e0       	ldi	r24, 0x00	; 0
+    7eae:	71 d0       	rcall	.+226    	; 0x7f92 <putch>
+    7eb0:	6d c0       	rjmp	.+218    	; 0x7f8c <main+0x18c>
     }
     /* Write memory, length is big endian and is in bytes  */
     else if(ch == STK_PROG_PAGE) {
-    7eb0:	84 36       	cpi	r24, 0x64	; 100
-    7eb2:	09 f0       	breq	.+2      	; 0x7eb6 <main+0xb6>
-    7eb4:	43 c0       	rjmp	.+134    	; 0x7f3c <main+0x13c>
+    7eb2:	84 36       	cpi	r24, 0x64	; 100
+    7eb4:	09 f0       	breq	.+2      	; 0x7eb8 <main+0xb8>
+    7eb6:	43 c0       	rjmp	.+134    	; 0x7f3e <main+0x13e>
       // PROGRAM PAGE - we support flash programming only, not EEPROM
       uint8_t *bufPtr;
       uint16_t addrPtr;
 
       getLen();
-    7eb6:	7c d0       	rcall	.+248    	; 0x7fb0 <getLen>
+    7eb8:	7c d0       	rcall	.+248    	; 0x7fb2 <getLen>
 
       // Immediately start page erase - this will 4.5ms
       boot_page_erase((uint16_t)(void*)address);
-    7eb8:	e0 91 00 02 	lds	r30, 0x0200
-    7ebc:	f0 91 01 02 	lds	r31, 0x0201
-    7ec0:	83 e0       	ldi	r24, 0x03	; 3
-    7ec2:	80 93 57 00 	sts	0x0057, r24
-    7ec6:	e8 95       	spm
-    7ec8:	c0 e0       	ldi	r28, 0x00	; 0
-    7eca:	d1 e0       	ldi	r29, 0x01	; 1
+    7eba:	e0 91 00 02 	lds	r30, 0x0200
+    7ebe:	f0 91 01 02 	lds	r31, 0x0201
+    7ec2:	83 e0       	ldi	r24, 0x03	; 3
+    7ec4:	80 93 57 00 	sts	0x0057, r24
+    7ec8:	e8 95       	spm
+    7eca:	c0 e0       	ldi	r28, 0x00	; 0
+    7ecc:	d1 e0       	ldi	r29, 0x01	; 1
 
       // While that is going on, read in page contents
       bufPtr = buff;
       do *bufPtr++ = getch();
-    7ecc:	69 d0       	rcall	.+210    	; 0x7fa0 <getch>
-    7ece:	89 93       	st	Y+, r24
+    7ece:	69 d0       	rcall	.+210    	; 0x7fa2 <getch>
+    7ed0:	89 93       	st	Y+, r24
       while (--length);
-    7ed0:	80 91 02 02 	lds	r24, 0x0202
-    7ed4:	81 50       	subi	r24, 0x01	; 1
-    7ed6:	80 93 02 02 	sts	0x0202, r24
-    7eda:	88 23       	and	r24, r24
-    7edc:	b9 f7       	brne	.-18     	; 0x7ecc <main+0xcc>
+    7ed2:	80 91 02 02 	lds	r24, 0x0202
+    7ed6:	81 50       	subi	r24, 0x01	; 1
+    7ed8:	80 93 02 02 	sts	0x0202, r24
+    7edc:	88 23       	and	r24, r24
+    7ede:	b9 f7       	brne	.-18     	; 0x7ece <main+0xce>
 
       // Read command terminator, start reply
       verifySpace();
-    7ede:	78 d0       	rcall	.+240    	; 0x7fd0 <verifySpace>
+    7ee0:	78 d0       	rcall	.+240    	; 0x7fd2 <verifySpace>
       
       // If only a partial page is to be programmed, the erase might not be complete.
       // So check that here
       boot_spm_busy_wait();
-    7ee0:	07 b6       	in	r0, 0x37	; 55
-    7ee2:	00 fc       	sbrc	r0, 0
-    7ee4:	fd cf       	rjmp	.-6      	; 0x7ee0 <main+0xe0>
+    7ee2:	07 b6       	in	r0, 0x37	; 55
+    7ee4:	00 fc       	sbrc	r0, 0
+    7ee6:	fd cf       	rjmp	.-6      	; 0x7ee2 <main+0xe2>
       }
 #endif
 
       // Copy buffer into programming buffer
       bufPtr = buff;
       addrPtr = (uint16_t)(void*)address;
-    7ee6:	40 91 00 02 	lds	r20, 0x0200
-    7eea:	50 91 01 02 	lds	r21, 0x0201
-    7eee:	a0 e0       	ldi	r26, 0x00	; 0
-    7ef0:	b1 e0       	ldi	r27, 0x01	; 1
+    7ee8:	40 91 00 02 	lds	r20, 0x0200
+    7eec:	50 91 01 02 	lds	r21, 0x0201
+    7ef0:	a0 e0       	ldi	r26, 0x00	; 0
+    7ef2:	b1 e0       	ldi	r27, 0x01	; 1
       ch = SPM_PAGESIZE / 2;
       do {
         uint16_t a;
         a = *bufPtr++;
-    7ef2:	2c 91       	ld	r18, X
-    7ef4:	30 e0       	ldi	r19, 0x00	; 0
+    7ef4:	2c 91       	ld	r18, X
+    7ef6:	30 e0       	ldi	r19, 0x00	; 0
         a |= (*bufPtr++) << 8;
-    7ef6:	11 96       	adiw	r26, 0x01	; 1
-    7ef8:	8c 91       	ld	r24, X
-    7efa:	11 97       	sbiw	r26, 0x01	; 1
-    7efc:	90 e0       	ldi	r25, 0x00	; 0
-    7efe:	98 2f       	mov	r25, r24
-    7f00:	88 27       	eor	r24, r24
-    7f02:	82 2b       	or	r24, r18
-    7f04:	93 2b       	or	r25, r19
+    7ef8:	11 96       	adiw	r26, 0x01	; 1
+    7efa:	8c 91       	ld	r24, X
+    7efc:	11 97       	sbiw	r26, 0x01	; 1
+    7efe:	90 e0       	ldi	r25, 0x00	; 0
+    7f00:	98 2f       	mov	r25, r24
+    7f02:	88 27       	eor	r24, r24
+    7f04:	82 2b       	or	r24, r18
+    7f06:	93 2b       	or	r25, r19
 #ifdef VIRTUAL_BOOT_PARTITION
 #define rstVect (*(uint16_t*)(0x204))
 #define wdtVect (*(uint16_t*)(0x206))
 #endif
 /* main program starts here */
 int main(void) {
-    7f06:	12 96       	adiw	r26, 0x02	; 2
+    7f08:	12 96       	adiw	r26, 0x02	; 2
       ch = SPM_PAGESIZE / 2;
       do {
         uint16_t a;
         a = *bufPtr++;
         a |= (*bufPtr++) << 8;
         boot_page_fill((uint16_t)(void*)addrPtr,a);
-    7f08:	fa 01       	movw	r30, r20
-    7f0a:	0c 01       	movw	r0, r24
-    7f0c:	d0 92 57 00 	sts	0x0057, r13
-    7f10:	e8 95       	spm
-    7f12:	11 24       	eor	r1, r1
+    7f0a:	fa 01       	movw	r30, r20
+    7f0c:	0c 01       	movw	r0, r24
+    7f0e:	d0 92 57 00 	sts	0x0057, r13
+    7f12:	e8 95       	spm
+    7f14:	11 24       	eor	r1, r1
         addrPtr += 2;
-    7f14:	4e 5f       	subi	r20, 0xFE	; 254
-    7f16:	5f 4f       	sbci	r21, 0xFF	; 255
+    7f16:	4e 5f       	subi	r20, 0xFE	; 254
+    7f18:	5f 4f       	sbci	r21, 0xFF	; 255
       } while (--ch);
-    7f18:	f1 e0       	ldi	r31, 0x01	; 1
-    7f1a:	a0 38       	cpi	r26, 0x80	; 128
-    7f1c:	bf 07       	cpc	r27, r31
-    7f1e:	49 f7       	brne	.-46     	; 0x7ef2 <main+0xf2>
+    7f1a:	f1 e0       	ldi	r31, 0x01	; 1
+    7f1c:	a0 38       	cpi	r26, 0x80	; 128
+    7f1e:	bf 07       	cpc	r27, r31
+    7f20:	49 f7       	brne	.-46     	; 0x7ef4 <main+0xf4>
       
       // Write from programming buffer
       boot_page_write((uint16_t)(void*)address);
-    7f20:	e0 91 00 02 	lds	r30, 0x0200
-    7f24:	f0 91 01 02 	lds	r31, 0x0201
-    7f28:	e0 92 57 00 	sts	0x0057, r14
-    7f2c:	e8 95       	spm
+    7f22:	e0 91 00 02 	lds	r30, 0x0200
+    7f26:	f0 91 01 02 	lds	r31, 0x0201
+    7f2a:	e0 92 57 00 	sts	0x0057, r14
+    7f2e:	e8 95       	spm
       boot_spm_busy_wait();
-    7f2e:	07 b6       	in	r0, 0x37	; 55
-    7f30:	00 fc       	sbrc	r0, 0
-    7f32:	fd cf       	rjmp	.-6      	; 0x7f2e <main+0x12e>
+    7f30:	07 b6       	in	r0, 0x37	; 55
+    7f32:	00 fc       	sbrc	r0, 0
+    7f34:	fd cf       	rjmp	.-6      	; 0x7f30 <main+0x130>
 
 #if defined(RWWSRE)
       // Reenable read access to flash
       boot_rww_enable();
-    7f34:	f0 92 57 00 	sts	0x0057, r15
-    7f38:	e8 95       	spm
-    7f3a:	27 c0       	rjmp	.+78     	; 0x7f8a <main+0x18a>
+    7f36:	f0 92 57 00 	sts	0x0057, r15
+    7f3a:	e8 95       	spm
+    7f3c:	27 c0       	rjmp	.+78     	; 0x7f8c <main+0x18c>
 #endif
 
     }
     /* Read memory block mode, length is big endian.  */
     else if(ch == STK_READ_PAGE) {
-    7f3c:	84 37       	cpi	r24, 0x74	; 116
-    7f3e:	b9 f4       	brne	.+46     	; 0x7f6e <main+0x16e>
+    7f3e:	84 37       	cpi	r24, 0x74	; 116
+    7f40:	b9 f4       	brne	.+46     	; 0x7f70 <main+0x170>
       // READ PAGE - we only read flash
       getLen();
-    7f40:	37 d0       	rcall	.+110    	; 0x7fb0 <getLen>
+    7f42:	37 d0       	rcall	.+110    	; 0x7fb2 <getLen>
       verifySpace();
-    7f42:	46 d0       	rcall	.+140    	; 0x7fd0 <verifySpace>
+    7f44:	46 d0       	rcall	.+140    	; 0x7fd2 <verifySpace>
         else ch = pgm_read_byte_near(address);
         address++;
         putch(ch);
       } while (--length);
 #else
       do putch(pgm_read_byte_near(address++));
-    7f44:	e0 91 00 02 	lds	r30, 0x0200
-    7f48:	f0 91 01 02 	lds	r31, 0x0201
-    7f4c:	31 96       	adiw	r30, 0x01	; 1
-    7f4e:	f0 93 01 02 	sts	0x0201, r31
-    7f52:	e0 93 00 02 	sts	0x0200, r30
-    7f56:	31 97       	sbiw	r30, 0x01	; 1
-    7f58:	e4 91       	lpm	r30, Z+
-    7f5a:	8e 2f       	mov	r24, r30
-    7f5c:	19 d0       	rcall	.+50     	; 0x7f90 <putch>
+    7f46:	e0 91 00 02 	lds	r30, 0x0200
+    7f4a:	f0 91 01 02 	lds	r31, 0x0201
+    7f4e:	31 96       	adiw	r30, 0x01	; 1
+    7f50:	f0 93 01 02 	sts	0x0201, r31
+    7f54:	e0 93 00 02 	sts	0x0200, r30
+    7f58:	31 97       	sbiw	r30, 0x01	; 1
+    7f5a:	e4 91       	lpm	r30, Z+
+    7f5c:	8e 2f       	mov	r24, r30
+    7f5e:	19 d0       	rcall	.+50     	; 0x7f92 <putch>
       while (--length);
-    7f5e:	80 91 02 02 	lds	r24, 0x0202
-    7f62:	81 50       	subi	r24, 0x01	; 1
-    7f64:	80 93 02 02 	sts	0x0202, r24
-    7f68:	88 23       	and	r24, r24
-    7f6a:	61 f7       	brne	.-40     	; 0x7f44 <main+0x144>
-    7f6c:	0e c0       	rjmp	.+28     	; 0x7f8a <main+0x18a>
+    7f60:	80 91 02 02 	lds	r24, 0x0202
+    7f64:	81 50       	subi	r24, 0x01	; 1
+    7f66:	80 93 02 02 	sts	0x0202, r24
+    7f6a:	88 23       	and	r24, r24
+    7f6c:	61 f7       	brne	.-40     	; 0x7f46 <main+0x146>
+    7f6e:	0e c0       	rjmp	.+28     	; 0x7f8c <main+0x18c>
 #endif
     }
 
     /* Get device signature bytes  */
     else if(ch == STK_READ_SIGN) {
-    7f6e:	85 37       	cpi	r24, 0x75	; 117
-    7f70:	39 f4       	brne	.+14     	; 0x7f80 <main+0x180>
+    7f70:	85 37       	cpi	r24, 0x75	; 117
+    7f72:	39 f4       	brne	.+14     	; 0x7f82 <main+0x182>
       // READ SIGN - return what Avrdude wants to hear
       verifySpace();
-    7f72:	2e d0       	rcall	.+92     	; 0x7fd0 <verifySpace>
+    7f74:	2e d0       	rcall	.+92     	; 0x7fd2 <verifySpace>
       putch(SIGNATURE_0);
-    7f74:	8e e1       	ldi	r24, 0x1E	; 30
-    7f76:	0c d0       	rcall	.+24     	; 0x7f90 <putch>
+    7f76:	8e e1       	ldi	r24, 0x1E	; 30
+    7f78:	0c d0       	rcall	.+24     	; 0x7f92 <putch>
       putch(SIGNATURE_1);
-    7f78:	85 e9       	ldi	r24, 0x95	; 149
-    7f7a:	0a d0       	rcall	.+20     	; 0x7f90 <putch>
+    7f7a:	85 e9       	ldi	r24, 0x95	; 149
+    7f7c:	0a d0       	rcall	.+20     	; 0x7f92 <putch>
       putch(SIGNATURE_2);
-    7f7c:	8f e0       	ldi	r24, 0x0F	; 15
-    7f7e:	96 cf       	rjmp	.-212    	; 0x7eac <main+0xac>
+    7f7e:	8f e0       	ldi	r24, 0x0F	; 15
+    7f80:	96 cf       	rjmp	.-212    	; 0x7eae <main+0xae>
     }
     else if (ch == 'Q') {
-    7f80:	81 35       	cpi	r24, 0x51	; 81
-    7f82:	11 f4       	brne	.+4      	; 0x7f88 <main+0x188>
+    7f82:	81 35       	cpi	r24, 0x51	; 81
+    7f84:	11 f4       	brne	.+4      	; 0x7f8a <main+0x18a>
       // Adaboot no-wait mod
       watchdogConfig(WATCHDOG_16MS);
-    7f84:	88 e0       	ldi	r24, 0x08	; 8
-    7f86:	19 d0       	rcall	.+50     	; 0x7fba <watchdogConfig>
+    7f86:	88 e0       	ldi	r24, 0x08	; 8
+    7f88:	19 d0       	rcall	.+50     	; 0x7fbc <watchdogConfig>
       verifySpace();
     }
     else {
       // This covers the response to commands like STK_ENTER_PROGMODE
       verifySpace();
-    7f88:	23 d0       	rcall	.+70     	; 0x7fd0 <verifySpace>
+    7f8a:	23 d0       	rcall	.+70     	; 0x7fd2 <verifySpace>
     }
     putch(STK_OK);
-    7f8a:	80 e1       	ldi	r24, 0x10	; 16
-    7f8c:	01 d0       	rcall	.+2      	; 0x7f90 <putch>
-    7f8e:	63 cf       	rjmp	.-314    	; 0x7e56 <main+0x56>
+    7f8c:	80 e1       	ldi	r24, 0x10	; 16
+    7f8e:	01 d0       	rcall	.+2      	; 0x7f92 <putch>
+    7f90:	63 cf       	rjmp	.-314    	; 0x7e58 <main+0x58>
 
-00007f90 <putch>:
+00007f92 <putch>:
   }
 }
 
 void putch(char ch) {
-    7f90:	98 2f       	mov	r25, r24
+    7f92:	98 2f       	mov	r25, r24
 #ifndef SOFT_UART
   while (!(UCSR0A & _BV(UDRE0)));
-    7f92:	80 91 c0 00 	lds	r24, 0x00C0
-    7f96:	85 ff       	sbrs	r24, 5
-    7f98:	fc cf       	rjmp	.-8      	; 0x7f92 <putch+0x2>
+    7f94:	80 91 c0 00 	lds	r24, 0x00C0
+    7f98:	85 ff       	sbrs	r24, 5
+    7f9a:	fc cf       	rjmp	.-8      	; 0x7f94 <putch+0x2>
   UDR0 = ch;
-    7f9a:	90 93 c6 00 	sts	0x00C6, r25
+    7f9c:	90 93 c6 00 	sts	0x00C6, r25
       [uartBit] "I" (UART_TX_BIT)
     :
       "r25"
   );
 #endif
 }
-    7f9e:	08 95       	ret
+    7fa0:	08 95       	ret
 
-00007fa0 <getch>:
+00007fa2 <getch>:
   return getch();
 }
 
 // Watchdog functions. These are only safe with interrupts turned off.
 void watchdogReset() {
   __asm__ __volatile__ (
-    7fa0:	a8 95       	wdr
+    7fa2:	a8 95       	wdr
       [uartBit] "I" (UART_RX_BIT)
     :
       "r25"
 );
 #else
   while(!(UCSR0A & _BV(RXC0)));
-    7fa2:	80 91 c0 00 	lds	r24, 0x00C0
-    7fa6:	87 ff       	sbrs	r24, 7
-    7fa8:	fc cf       	rjmp	.-8      	; 0x7fa2 <getch+0x2>
+    7fa4:	80 91 c0 00 	lds	r24, 0x00C0
+    7fa8:	87 ff       	sbrs	r24, 7
+    7faa:	fc cf       	rjmp	.-8      	; 0x7fa4 <getch+0x2>
   ch = UDR0;
-    7faa:	80 91 c6 00 	lds	r24, 0x00C6
+    7fac:	80 91 c6 00 	lds	r24, 0x00C6
 #ifdef LED_DATA_FLASH
   LED_PIN |= _BV(LED);
 #endif
 
   return ch;
 }
-    7fae:	08 95       	ret
+    7fb0:	08 95       	ret
 
-00007fb0 <getLen>:
+00007fb2 <getLen>:
   } while (--count);
 }
 #endif
 
 uint8_t getLen() {
   getch();
-    7fb0:	f7 df       	rcall	.-18     	; 0x7fa0 <getch>
+    7fb2:	f7 df       	rcall	.-18     	; 0x7fa2 <getch>
   length = getch();
-    7fb2:	f6 df       	rcall	.-20     	; 0x7fa0 <getch>
-    7fb4:	80 93 02 02 	sts	0x0202, r24
+    7fb4:	f6 df       	rcall	.-20     	; 0x7fa2 <getch>
+    7fb6:	80 93 02 02 	sts	0x0202, r24
   return getch();
 }
-    7fb8:	f3 cf       	rjmp	.-26     	; 0x7fa0 <getch>
+    7fba:	f3 cf       	rjmp	.-26     	; 0x7fa2 <getch>
 
-00007fba <watchdogConfig>:
+00007fbc <watchdogConfig>:
     "wdr\n"
   );
 }
 
 void watchdogConfig(uint8_t x) {
   WDTCSR = _BV(WDCE) | _BV(WDE);
-    7fba:	e0 e6       	ldi	r30, 0x60	; 96
-    7fbc:	f0 e0       	ldi	r31, 0x00	; 0
-    7fbe:	98 e1       	ldi	r25, 0x18	; 24
-    7fc0:	90 83       	st	Z, r25
+    7fbc:	e0 e6       	ldi	r30, 0x60	; 96
+    7fbe:	f0 e0       	ldi	r31, 0x00	; 0
+    7fc0:	98 e1       	ldi	r25, 0x18	; 24
+    7fc2:	90 83       	st	Z, r25
   WDTCSR = x;
-    7fc2:	80 83       	st	Z, r24
+    7fc4:	80 83       	st	Z, r24
 }
-    7fc4:	08 95       	ret
+    7fc6:	08 95       	ret
 
-00007fc6 <appStart>:
+00007fc8 <appStart>:
 
 void appStart() {
   watchdogConfig(WATCHDOG_OFF);
-    7fc6:	80 e0       	ldi	r24, 0x00	; 0
-    7fc8:	f8 df       	rcall	.-16     	; 0x7fba <watchdogConfig>
+    7fc8:	80 e0       	ldi	r24, 0x00	; 0
+    7fca:	f8 df       	rcall	.-16     	; 0x7fbc <watchdogConfig>
   __asm__ __volatile__ (
-    7fca:	ee 27       	eor	r30, r30
-    7fcc:	ff 27       	eor	r31, r31
-    7fce:	09 94       	ijmp
+    7fcc:	ee 27       	eor	r30, r30
+    7fce:	ff 27       	eor	r31, r31
+    7fd0:	09 94       	ijmp
 
-00007fd0 <verifySpace>:
+00007fd2 <verifySpace>:
   do getch(); while (--count);
   verifySpace();
 }
 
 void verifySpace() {
   if (getch() != CRC_EOP) appStart();
-    7fd0:	e7 df       	rcall	.-50     	; 0x7fa0 <getch>
-    7fd2:	80 32       	cpi	r24, 0x20	; 32
-    7fd4:	09 f0       	breq	.+2      	; 0x7fd8 <verifySpace+0x8>
-    7fd6:	f7 df       	rcall	.-18     	; 0x7fc6 <appStart>
+    7fd2:	e7 df       	rcall	.-50     	; 0x7fa2 <getch>
+    7fd4:	80 32       	cpi	r24, 0x20	; 32
+    7fd6:	09 f0       	breq	.+2      	; 0x7fda <verifySpace+0x8>
+    7fd8:	f7 df       	rcall	.-18     	; 0x7fc8 <appStart>
   putch(STK_INSYNC);
-    7fd8:	84 e1       	ldi	r24, 0x14	; 20
+    7fda:	84 e1       	ldi	r24, 0x14	; 20
 }
-    7fda:	da cf       	rjmp	.-76     	; 0x7f90 <putch>
+    7fdc:	da cf       	rjmp	.-76     	; 0x7f92 <putch>
     ::[count] "M" (UART_B_VALUE)
   );
 }
 #endif
 
 void getNch(uint8_t count) {
-    7fdc:	1f 93       	push	r17
-    7fde:	18 2f       	mov	r17, r24
+    7fde:	1f 93       	push	r17
+    7fe0:	18 2f       	mov	r17, r24
 
-00007fe0 <getNch>:
+00007fe2 <getNch>:
   do getch(); while (--count);
-    7fe0:	df df       	rcall	.-66     	; 0x7fa0 <getch>
-    7fe2:	11 50       	subi	r17, 0x01	; 1
-    7fe4:	e9 f7       	brne	.-6      	; 0x7fe0 <getNch>
+    7fe2:	df df       	rcall	.-66     	; 0x7fa2 <getch>
+    7fe4:	11 50       	subi	r17, 0x01	; 1
+    7fe6:	e9 f7       	brne	.-6      	; 0x7fe2 <getNch>
   verifySpace();
-    7fe6:	f4 df       	rcall	.-24     	; 0x7fd0 <verifySpace>
+    7fe8:	f4 df       	rcall	.-24     	; 0x7fd2 <verifySpace>
 }
-    7fe8:	1f 91       	pop	r17
-    7fea:	08 95       	ret
+    7fea:	1f 91       	pop	r17
+    7fec:	08 95       	ret