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

2011-11-20T18:43:13Z

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

2011-04-16T10:28:00Z

‎Clones

2011-04-16T10:26:03Z

‎Clones

2011-04-15T10:44:36Z

‎Clones: link to the Verilog code

2011-04-15T09:09:55Z

‎Clones: - typo and wikilinks

2011-04-15T07:45:09Z

‎Clones

2011-04-15T07:43:51Z

2011-04-15T07:17:35Z

2010-12-19T18:20:15Z

@@ Line 109: / Line 109: @@
 Image:NoAcid.jpg|GX4000 running without ACID
 Image:NoAcid_sch.png|Schematics
 </gallery>

← 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).

@@ 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]].
 * 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">
 Image:NoAcid.jpg|GX4000 running without ACID

@@ 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]].
 * 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">

@@ Line 103: / Line 103: @@
 == 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.
 <gallery caption="Running CPC+ without ACID">

@@ 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.
+* It's possible to use the CPC+ without ACID by exploiting a timing bug in the CPC+ASIC.
 == Misc ==

← 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 ==

← 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]]