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27C256
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29 Apr 2004 - 02:54 - r1.2
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Home.rschoener
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The 27C256 is the basic EPROM commonly used to chip ECUs. It is a 32k byte (256kbit) chip. 27C256 chips are generally either OTP or UV-Erase . Beware tho! Most honda ...
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28C256
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12 Apr 2004 - 20:42 - NEW
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Home.tungsten2k
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28C256 EEPROM s will work in ECUs, but require pins to be moved around/altered due to them being a different pinout than either 27C256 or 29C256 chips. http://rocky ...
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29C010
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18 Nov 2006 - 17:46 - NEW
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Home.longbow
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The http://www.atmel.com ATMEL AT29C010 chip is a FLASH ROM chip with 1Mbit(~128kb) of memory. It can be found in old Pentium I II computer motherbords. This chip ...
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82C55
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01 Aug 2005 - 14:37 - r1.3
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Home.blundar
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The 82C55 is an IO controller chip used in many OBD1 ECUs. Fortunately, almost all OBD1CivicIntegraECUs share a common pattern for what is controlled by the 82C55 ...
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A5
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05 Mar 2004 - 19:37 - NEW
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Home.blundar
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A5h (opcode 'A5' in hexidecimal) is the "reserved" opcode of the 8051 instruction set. This means it is NOT a valid instruction to a pure 8051 microcontroller. In ...
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AdjustPR4PaSensor
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22 Sep 2005 - 21:14 - r1.2
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Home.warrick
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Dave Blundell sez "Vernon (deluded) sent me much of this info." As a rule of thumb, 90 PR4s have external PA sensors, and 91 ECUs have internal PA sensors. You can ...
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BegginersFAQ
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27 Feb 2007 - 18:13 - r1.2
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Home.sanimalp
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(blundar sez: most of these were moved over from the old FAQ) If you are a beginner, and you have a question that you think other people will have too, please add ...
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ChippingAn88-89ECU
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21 Sep 2005 - 08:24 - r1.8
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Home.1net
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OBD0MPFI ECUs have two main designs that affect how the ECU is chipped. 90-91 ECU s have an external 38256 (same as 27C256 ) ROM . This can be removed and replaced ...
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EcuChippingWirelist
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22 Nov 2005 - 23:59 - r1.4
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Home.markolson
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This topic is intended to help you debug soldering problems when chipping an ECU. The first section is generic advice for debuggiing all ECUs. The remaining sections ...
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EcuDefinitionCodes
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02 Apr 2007 - 17:06 - r1.84
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Home.hackish
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Honda ECU definition codes These id codes are the last 3 digits printed directly on the MCU after the model number (e.g. M66207-251 the "251" portion will be a much ...
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HiResP72
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17 Feb 2004 - 09:26 - NEW
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Home.tungsten2k
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HiResP72 is a custom P72 based ROM that has been modified to have the same size fuel and ignition lookup tables as used in the P28 so that tables can be copied/pasted ...
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Intel8051
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23 Jul 2004 - 04:44 - r1.4
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Home.blundar
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for all you could want to know and a great tutorial, go to http://www.8052.com Any 8051 assembler will work fine for coding. Sysrad51, available http://www.systronix ...
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KurtsOBD0-OBD1
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19 Feb 2004 - 22:01 - NEW
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TWiki Guest
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First attempt to post this OBD1 conversion write-up on wiki.pgmfi.org. Some sections need revision still and they are in italics/bold print. Please send any suggestions ...
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LabelDecode
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19 Sep 2004 - 19:21 - r1.3
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Home.blundar
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You can find out a lot from reading the label on a OBD1 ECU. This applies mainly to the Civic ECUs... dunno bount the integra ones. 37820-ABC-XYZ Digits Meaning ABC ...
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LegoZoo
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19 Feb 2004 - 22:01 - NEW
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TWiki Guest
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I try to be cool... http://home.insightbb.com/~legoz81 LegoZ81@a5.com LegoZ81 on the site go grab mIRC get on EFNet and /j #pgmfi.org !!! I will be hosting files there ...
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Oki6260A
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02 Mar 2005 - 13:31 - r1.5
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Home.l3st4rd
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The Oki 6260A was manufactured for Honda by Oki. J. Wong has this to say: "I was just cleaning out my cube and just happened to run across a piece of paper with 6260A ...
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Oki80C154
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20 Feb 2004 - 00:37 - NEW
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Home.blundar
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MCU used in OBD0MPFI ECUs that has zero internal code memory. requires the use of an external EPROM It is mostly 8051 compatible, and features a third timer like ...
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Oki83C154
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05 Mar 2004 - 17:44 - r1.2
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Home.blundar
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MCU used in OBD0MPFI ECU s that has 16k on-chip code memory. Usually copy protected, but there are McuReaders. It is mostly 8051 compatible, and features a third ...
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P0A
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18 May 2006 - 18:59 - r1.3
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Home.kabuki
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P0A 94-95 OBD1 Accord EX attached pic is a 94 P0A-A51 PCB is IPT 02D010B0-1502 The data below has been copied over from the P13 page as a place holder. Only a few ...
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P30
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23 Mar 2007 - 11:36 - r1.27
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Home.johncui
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P30 (Rom #203) P30-G01 95 Uk Civic Vti Hatch, Big case one. Uses CPU's internal rom, but has space for external rom. Ran code from rom above OK but needed knock sensor ...
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PT3
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25 Mar 2006 - 19:57 - r1.3
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Home.acclude
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PT3 90-93 OBD1 USDM Accord SOHC non-vtec F22A1 This ECU shares the shares the same PC board with the EDM PT5 Accord ECU (02D01190-1504) Scan: http://pgmfi.org/resources ...
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PgmfiD51
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05 Mar 2004 - 19:46 - NEW
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Home.blundar
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blundar modified a dasm he found, D51, to support the A5 instruction as is peculiar on the Oki 8XC154 MCUs. Blundar made linux binaries. Chris D make windows binaries ...
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PreludeAccord
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16 May 2005 - 14:26 - r1.2
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Home.sloopy
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OK, here is what I know about these ECUs. The PT6-A51 I have here has a 66911 MCU and uses an external 256k PROM. I got an ECU out of a 1994 Prelude SI with a 1.6 ...
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