Videocart dumper - Revision history

E5frog at 13:46, 12 April 2022

2022-04-12T13:46:19Z

E5frog at 19:15, 15 November 2013

2013-11-15T19:15:46Z

E5frog at 13:23, 15 November 2013

2013-11-15T13:23:57Z

E5frog at 22:05, 14 November 2013

2013-11-14T22:05:44Z

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E5frog at 01:01, 14 November 2013

2013-11-14T01:01:02Z

E5frog at 22:55, 13 November 2013

2013-11-13T22:55:28Z

E5frog at 19:34, 13 November 2013

2013-11-13T19:34:41Z

E5frog at 19:13, 13 November 2013

2013-11-13T19:13:14Z

E5frog at 18:55, 13 November 2013

2013-11-13T18:55:48Z

E5frog at 18:43, 13 November 2013

2013-11-13T18:43:20Z

← Older revision		Revision as of 13:46, 12 April 2022
Line 70:		Line 70:

	Files for PIC16F84, (PIC16C84) and PIC16F628:<br>		Files for PIC16F84, (PIC16C84) and PIC16F628:<br>
−	[[~~http~~://channelf.se/veswiki/images/e/e6/Dumper_PIC_code.7z PIC processor files]]	+	[[https://channelf.se/veswiki/images/e/e6/Dumper_PIC_code.7z PIC processor files]]

@@ Line 50: / Line 50: @@
 PIC-processor pinout 16F628:<br>
 <br>
-[[File:PIC16F628_pinout.png|left]]
+[[File:PIC16F628_pinout.png|center]]
 <br>
 Pinout is the same on the 16C84 and 16F84, no need for hardware changes if you swap between these.<br>

@@ Line 48: / Line 48: @@
 <br>
 <br>
-PIC-processor pinout 16F628 (linked picture):<br>
+PIC-processor pinout 16F628:<br>
-http://vallejo.cc/proyectos/cellbot/16f628pinout.jpg<br>
+<br>
 Pinout is the same on the 16C84 and 16F84, no need for hardware changes if you swap between these.<br>
 <br>

@@ Line 55: / Line 55: @@
 <br>
-For full compatibility you also need an RS232 level converter as standard says that valid data is supposed to be 3-15V in either direction. However, a lot of modern computers will accept serial data at TTL levels (0 and 5V) which saves some components. A 10kOhm resistor is recommended between PIC and PC serial port if hooking it directly to a computer serial port.
+For full compatibility you also need an RS232 level converter as standard says that valid data is supposed to be 3-15V in either direction. However, a lot of modern computers will accept serial data at TTL levels (0 and 5V) which saves some components. A 1k Ohm resistor is recommended between PIC and PC serial port if hooking it directly to a computer serial port. The command DEFINE DEBUG_MODE 1 is required for direct connection to PC.
-MAX232 is a popular circuit for level conversion and recommended, it does require five capacitors as well, see datasheet page 17 and forward for hookup details:
+MAX232 is a popular circuit for level, it does however require five capacitors, see datasheet page 17 and forward for hookup details:
 http://datasheets.maximintegrated.com/en/ds/MAX220-MAX249.pdf<br>
 <br>
@@ Line 109: / Line 109: @@
 f8romc3 	VAR		PORTA.3		;ROMC3 signal
-;	CMCON=7					;turn off comparators
+;	CMCON=7					;turn off comparators, sets digital I/O
 OPTION_REG.7=0					;weak pull ups on port B
 TRISB=$FF						;port B is all input
@@ Line 345: / Line 345: @@
 DEFINE 	DEBUG_REG	PORTA			; serial output on A.0
 DEFINE 	DEBUG_BIT	0
-DEFINE 	DEBUG_BAUD	4800
+;DEFINE 	DEBUG_BAUD	4800		; Sean's original setting 4800-N-1
 BUFSIZE 	CON		16			; 16-byte buffer
@@ Line 369: / Line 372: @@
 Low f8romc3
-;	Debug "start..."
+;	Debug "start..."				; optional start message on serial port
 Pause 2000						; wait a couple of seconds after reset

@@ Line 30: / Line 30: @@
 Connect this way: <br>
-Port A.0, '''PIC pin 17''', serial data, pair with ground wire to PC (if TTL compatible) serial port, RxD, pin 3 on (both 25 pin or 9 pin) serial connector, ground to pin 5 of 9 pin serial, pin 7 if it's a 25 pin. <br>
+Port A.0, '''PIC pin 17''', serial data, pair with ground wire to PC (if TTL compatible) serial port, RxD, pin 2 (both 25 pin or 9 pin) serial connector, ground to pin 5 of 9 pin serial, pin 7 if it's a 25 pin. <br>
 <br>
 Signals going from PIC to cartridge:<br>

@@ Line 30: / Line 30: @@
 Connect this way: <br>
-Port A.0, PIC pin 17, serial data, pair with ground wire to PC (if TTL compatible)<br>
+Port A.0, '''PIC pin 17''', serial data, pair with ground wire to PC (if TTL compatible) serial port, RxD, pin 3 on (both 25 pin or 9 pin) serial connector, ground to pin 5 of 9 pin serial, pin 7 if it's a 25 pin. <br>
 <br>
-Signals going to cartridge from PIC:<br>
+Signals going from PIC to cartridge:<br>
-Port A.1, PIC pin 18, "f8phi", clock signal, cart pin 13<br>
+Port A.1, '''PIC pin 18''', "f8phi", clock signal, cartridge pin 13<br>
-Port A.2, PIC pin 1, "f8write", write signal, cart pin 15<br>
+Port A.2, '''PIC pin 1''', "f8write", write signal, cartridge pin 15<br>
-Port A.3, PIC pin 2, "f8romc3", ROMC3 signal, cart pin 10<br>
+Port A.3, '''PIC pin 2''', "f8romc3", ROMC3 signal, cartridge pin 10<br>
 <br>
 Port B is used for data input D0-D7 from cartridge as follows<br>
@@ Line 56: / Line 56: @@
 For full compatibility you also need an RS232 level converter as standard says that valid data is supposed to be 3-15V in either direction. However, a lot of modern computers will accept serial data at TTL levels (0 and 5V) which saves some components. A 10kOhm resistor is recommended between PIC and PC serial port if hooking it directly to a computer serial port.
-MAX232 is a popular circuit for level conversion, standard says 3-15V in both directions are valid values for RS232.
+MAX232 is a popular circuit for level conversion and recommended, it does require five capacitors as well, see datasheet page 17 and forward for hookup details:
-The portable dumper mentioned above used a serial eprom to store the data, that's another method if you need some in between storage before transferring to a computer.
+The portable dumper mentioned above used a serial eprom to store the data, that's another method if you need some in-between storage before transferring to a computer.

@@ Line 47: / Line 47: @@
 D7 to PIC pin 13<br>
 <br>
 <br>
 PIC-processor pinout 16F628 (linked picture):<br>
@@ Line 56: / Line 55: @@
 <br>
@@ Line 64: / Line 66: @@
+Sean Riddle's code (recommended), I changed the buffer size and terminal speed, see comments.
 <PRE>
 ;Fairchild Channel F cart dumper version 2

@@ Line 33: / Line 33: @@
 <br>
 Signals going to cartridge from PIC:<br>
-Port A.1, PIC pin 18, f8phi clock signal, cart pin 13<br>
+Port A.1, PIC pin 18, "f8phi", clock signal, cart pin 13<br>
-Port A.2, PIC pin 1, f8write write signal, cart pin 15<br>
+Port A.2, PIC pin 1, "f8write", write signal, cart pin 15<br>
-Port A.3, PIC pin 2, f8romc3 ROMC3 signal, cart pin 10<br>
+Port A.3, PIC pin 2, "f8romc3", ROMC3 signal, cart pin 10<br>
 <br>
 Port B is used for data input D0-D7 from cartridge as follows<br>
@@ Line 47: / Line 47: @@
 D7 to PIC pin 13<br>
 <br>
 <br>
@@ Line 60: / Line 59: @@
-Files for PCI16F84, PIC16C84 and PIC16F628:<br>
+Files for PIC16F84, (PIC16C84) and PIC16F628:<br>
 [[http://channelf.se/veswiki/images/e/e6/Dumper_PIC_code.7z PIC processor files]]

@@ Line 1: / Line 1: @@
 Sean Riddle built a dumper for the Videocarts to be able to lure the code out without damaging the cartridges.
 A portable version was shipped over the world to collect rare data from even rarer cartridges.
 Pinout of cartridge:
@@ Line 30: / Line 29: @@
 </pre>
-Connect this way:
+Connect this way: <br>
-Port A.0, pin w serial data, pair with ground wire to PC (if TTL compatible)<br>
+Port A.0, PIC pin 17, serial data, pair with ground wire to PC (if TTL compatible)<br>
 <br>
-Port B, used for data input D0-D7 from cartridge<br>
+Signals going to cartridge from PIC:<br>
 <br>
 PIC-processor pinout 16F628 (linked picture):<br>