Amstrad Cartridge Identification Device - Revision history

Robcfg: Added picture of the decapped ACID chip

2017-11-18T23:49:03Z

Added picture of the decapped ACID chip

← Older revision		Revision as of 23:49, 18 November 2017
Line 109:		Line 109:
	Image:NoAcid.jpg\|GX4000 running without ACID		Image:NoAcid.jpg\|GX4000 running without ACID
	Image:NoAcid_sch.png\|Schematics		Image:NoAcid_sch.png\|Schematics
			</gallery>

			== Pictures ==
			* ACID chip decapped. Many thanks to Sean Riddle!
			<gallery>
			Image:40908_Metal_Small.jpg
	</gallery>		</gallery>

Octoate: added a sentence to show that a replacement of the ACID protection chip is possible

2011-11-20T18:43:13Z

added a sentence to show that a replacement of the ACID protection chip is possible

← Older revision		Revision as of 18:43, 20 November 2011
Line 1:		Line 1:
	[[Image:Inside GX4000 cart 1.jpg\|frame\|right\|ACID protection chip within a cartridge (bottom)]]		[[Image:Inside GX4000 cart 1.jpg\|frame\|right\|ACID protection chip within a cartridge (bottom)]]

	The '''ACID''' (Amstrad Cartridge Identification Device) protection chip is used in the [[GX4000 cartridge\|cartridges]] of the [[Plus]] series and the [[GX4000]] game console.		The '''ACID''' (Amstrad Cartridge Identification Device) protection chip is used in the [[GX4000 cartridge\|cartridges]] of the [[Plus]] series and the [[GX4000]] game console. After Nocash decrypted the internal algorithms it is possible to replace the protection chip with a complex programmable logic device (CPLD).

Nilquader: /* Clones */

2011-04-16T10:28:00Z

Clones

← Older revision		Revision as of 10:28, 16 April 2011
Line 105:		Line 105:
	* An ACID replacement using a Xilinx XC9536 CPLD and some [[Verilog implementation of the ACID chip\|Verilog code]] based on nocash's reverse engineering work has been built by [[Octoate]] and [[Nilquader]].		* An ACID replacement using a Xilinx XC9536 CPLD and some [[Verilog implementation of the ACID chip\|Verilog code]] based on nocash's reverse engineering work has been built by [[Octoate]] and [[Nilquader]].
	* Miguel Angel (aka mcleod_ideafix) has published all the info about his implementation of the ACID in a CPLD, verilog sources included [http://www.zxprojects.com/index.php/analisis-del-chip-acid/62-analisis-del-chip-acid-del-amstrad-cpcgx4000]		* Miguel Angel (aka mcleod_ideafix) has published all the info about his implementation of the ACID in a CPLD, verilog sources included [http://www.zxprojects.com/index.php/analisis-del-chip-acid/62-analisis-del-chip-acid-del-amstrad-cpcgx4000]
	* It's possible to use the CPC+ without ACID by exploiting a timing bug in the CPC+/GX4000-ASIC Chip.		* It's possible to use the CPC+ without ACID by exploiting a timing bug in the CPC+/GX4000-ASIC Chip. (Developed by [[Nilquader]])
	<gallery caption="Running CPC+ without ACID">		<gallery caption="Running CPC+ without ACID">
	Image:NoAcid.jpg\|GX4000 running without ACID		Image:NoAcid.jpg\|GX4000 running without ACID

Nilquader: /* Clones */

2011-04-16T10:26:03Z

Clones

← Older revision		Revision as of 10:26, 16 April 2011
Line 104:		Line 104:

	* An ACID replacement using a Xilinx XC9536 CPLD and some [[Verilog implementation of the ACID chip\|Verilog code]] based on nocash's reverse engineering work has been built by [[Octoate]] and [[Nilquader]].		* An ACID replacement using a Xilinx XC9536 CPLD and some [[Verilog implementation of the ACID chip\|Verilog code]] based on nocash's reverse engineering work has been built by [[Octoate]] and [[Nilquader]].
			* Miguel Angel (aka mcleod_ideafix) has published all the info about his implementation of the ACID in a CPLD, verilog sources included [http://www.zxprojects.com/index.php/analisis-del-chip-acid/62-analisis-del-chip-acid-del-amstrad-cpcgx4000]
	* It's possible to use the CPC+ without ACID by exploiting a timing bug in the CPC+/GX4000-ASIC Chip.		* It's possible to use the CPC+ without ACID by exploiting a timing bug in the CPC+/GX4000-ASIC Chip.
	<gallery caption="Running CPC+ without ACID">		<gallery caption="Running CPC+ without ACID">

Octoate: /* Clones */ link to the Verilog code

2011-04-15T10:44:36Z

Clones: link to the Verilog code

← Older revision		Revision as of 10:44, 15 April 2011
Line 103:		Line 103:
	== Clones ==		== Clones ==

	* An ACID replacement using a Xilinx XC9536 CPLD and some [[~~Media:acid.v~~\|Verilog ~~Code~~]] based on nocash's reverse engineering work has been built by [[Octoate]] and [[Nilquader]].		* An ACID replacement using a Xilinx XC9536 CPLD and some [[Verilog implementation of the ACID chip\|Verilog code]] based on nocash's reverse engineering work has been built by [[Octoate]] and [[Nilquader]].
	* It's possible to use the CPC+ without ACID by exploiting a timing bug in the CPC+/GX4000-ASIC Chip.		* It's possible to use the CPC+ without ACID by exploiting a timing bug in the CPC+/GX4000-ASIC Chip.
	<gallery caption="Running CPC+ without ACID">		<gallery caption="Running CPC+ without ACID">

Octoate: /* Clones */ - typo and wikilinks

2011-04-15T09:09:55Z

Clones: - typo and wikilinks

← Older revision		Revision as of 09:09, 15 April 2011
Line 103:		Line 103:
	== Clones ==		== Clones ==

	* An ACID replacement using a Xilinx XC9536 CPLD and some [[Media:acid.v\|Verilog Code]] based on nocash's reverse engineering work has been built by ~~Ocotoate~~ and Nilquader.		* An ACID replacement using a Xilinx XC9536 CPLD and some [[Media:acid.v\|Verilog Code]] based on nocash's reverse engineering work has been built by [[Octoate]] and [[Nilquader]].
	* It's possible to use the CPC+ without ACID by exploiting a timing bug in the CPC+/GX4000-ASIC Chip.		* It's possible to use the CPC+ without ACID by exploiting a timing bug in the CPC+/GX4000-ASIC Chip.
	<gallery caption="Running CPC+ without ACID">		<gallery caption="Running CPC+ without ACID">

Nilquader: /* Clones */

2011-04-15T07:45:09Z

Clones

← Older revision		Revision as of 07:45, 15 April 2011
Line 104:		Line 104:

	* An ACID replacement using a Xilinx XC9536 CPLD and some [[Media:acid.v\|Verilog Code]] based on nocash's reverse engineering work has been built by Ocotoate and Nilquader.		* An ACID replacement using a Xilinx XC9536 CPLD and some [[Media:acid.v\|Verilog Code]] based on nocash's reverse engineering work has been built by Ocotoate and Nilquader.
	* It's possible to use the CPC+ without ACID by exploiting a timing bug in the CPC+ASIC.		* It's possible to use the CPC+ without ACID by exploiting a timing bug in the CPC+/GX4000-ASIC Chip.
	<gallery caption="~~Original messy circuit~~">		<gallery caption="Running CPC+ without ACID">
	Image:NoAcid.jpg\|GX4000 running without ACID		Image:NoAcid.jpg\|GX4000 running without ACID
	Image:NoAcid_sch.png\|Schematics		Image:NoAcid_sch.png\|Schematics

Nilquader at 07:43, 15 April 2011

2011-04-15T07:43:51Z

← Older revision		Revision as of 07:43, 15 April 2011
Line 104:		Line 104:

	* An ACID replacement using a Xilinx XC9536 CPLD and some [[Media:acid.v\|Verilog Code]] based on nocash's reverse engineering work has been built by Ocotoate and Nilquader.		* An ACID replacement using a Xilinx XC9536 CPLD and some [[Media:acid.v\|Verilog Code]] based on nocash's reverse engineering work has been built by Ocotoate and Nilquader.
			* It's possible to use the CPC+ without ACID by exploiting a timing bug in the CPC+ASIC.
			<gallery caption="Original messy circuit">
			Image:NoAcid.jpg\|GX4000 running without ACID
			Image:NoAcid_sch.png\|Schematics
			</gallery>

	== Misc ==		== Misc ==

Nilquader at 07:17, 15 April 2011

2011-04-15T07:17:35Z

← Older revision		Revision as of 07:17, 15 April 2011
Line 100:		Line 100:

	Note: The two GND pins are interconnected with each other (inside of the chip). The NC pin seems to be always high.		Note: The two GND pins are interconnected with each other (inside of the chip). The NC pin seems to be always high.

			== Clones ==

			* An ACID replacement using a Xilinx XC9536 CPLD and some [[Media:acid.v\|Verilog Code]] based on nocash's reverse engineering work has been built by Ocotoate and Nilquader.


	== Misc ==		== Misc ==

MacDeath at 18:20, 19 December 2010

2010-12-19T18:20:15Z

← Older revision		Revision as of 18:20, 19 December 2010
Line 117:		Line 117:


	[[Category:Hardware]][[Category:Cartridges\| ]][[Category:CPC Plus]][[Category:CPC Internal Components]][[Category:Amstrad Products]]		[[Category:Hardware]][[Category:Cartridges\| ]][[Category:CPC Plus]][[Category:CPC Internal Components]][[Category:Amstrad Products]][[Category:Electronic Component]]