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 <<O>>  Difference Topic RomMaps (r1.6 - 12 Apr 2004 - Home.SYnoptic)
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 <<O>>  Difference Topic RomMaps (r1.5 - 06 Mar 2004 - Home.hardlowrdranger)
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  • P13 JDM - The oddball JDM H22 (92-95 Prelude DOHC VTEC)
  • P13 - The USDM H22 (92-95 Prelude DOHC VTEC) uses different code from the JDM version.
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  • P13 - The JDM/USDM H22 (92-95 Prelude DOHC VTEC).

 <<O>>  Difference Topic RomMaps (r1.4 - 04 Mar 2004 - Home.blundar)
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OBD0 Vtec ECUs

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OBD0 Vtec ECUs


 <<O>>  Difference Topic RomMaps (r1.3 - 03 Mar 2004 - Home.tungsten2k)
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PGMFI.ORG Rom Maps

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Rom Maps

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OBD1 Civic Integra ECUs share a lot of features

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OBD1 Civic and Integra ECUs

OBD1 Civic Integra ECUs share a lot of features

Memory Locations

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;:ASM662 can be used to assemble and disassemble these ROMs. ;:OBD1 Conversion Formulae can be used to convert values found in these ROMs to real-world values. ;:OBD1 Code Compatibility describes the various ways you can run code in an ECU other than what was intended. ;:Some 66k Assembler Routines have been commented, and you can look at the commented OBD1 Civ Teg Routines ;:There is an interaction between hardware and software to determine whether an ECU will behave like an Auto Or Manual.

Other OBD1

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Programming Resources

Other OBD1

Everything else OBD1 - usually 66207 based MCUs

Memory Locations

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  • P13 - The USDM H22 (92-95 Prelude DOHC VTEC) uses different code from the JDM version.
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OBD0 Vtec ECUs ECUs share a lot of features

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OBD0 Vtec ECUs

OBD0 Vtec ECUs ECUs share a lot of features

Memory Locations

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  • ASM662 - can be used to assemble and disassemble these ROMs.
  • OBD0 Vtec Routines? - have yet to be written.
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;:ASM662 can be used to assemble and disassemble these ROMs. ;:Hopefully soon there will be commented OBD0 Vtec Routines? for you to look at.

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OBD0 MPFI ECUs share a lot of features

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OBD0 Multi-Point Fuel-Injected

OBD0 MPFI ECUs share a lot of features

Memory Locations

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  • 91 PM7 - Although very similar to the 91 PM6, George Ricketts and others have done a lot of development with the PM7.

;:OBD0 PM6 PM7 RAM_Locations the PM6 and PM7 code seems to store important values in really similar RAM locations. ;:OBD0 Conversion Formulae can be used to convert values found in these ROMs to real world values. ;:OBD0 Code Compatibility details what code can be swapped into which ECUs. ;:OBD0 MPFIRoutines? are often shared between ECUs ;:Intel8051 assembler/disassemblers can be used with these ROMs

A webpage with some of the ROM locations and formulas is here.

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  • 91 PM7 - Although very similar to the 91 PM6, George Ricketts and others have done a lot of development with the PM7

Programming Resources

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External Resources

  • A webpage with some of the ROM locations and formulas is here.

 <<O>>  Difference Topic RomMaps (r1.2 - 20 Feb 2004 - Home.blundar)
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OBD0 Civic Integra? ECUs share a lot of features

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OBD0 MPFI ECUs share a lot of features

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;:OBD0 Civic Integra Routines are often shared between ECUs

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;:OBD0 MPFIRoutines? are often shared between ECUs


 <<O>>  Difference Topic RomMaps (r1.1 - 19 Feb 2004 - Home.blundar)
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PGMFI.ORG Rom Maps

An area to collaborate on all the memory addresses found in ROMs

OBD1 Civic Integra ECUs share a lot of features

;:ASM662 can be used to assemble and disassemble these ROMs. ;:OBD1 Conversion Formulae can be used to convert values found in these ROMs to real-world values. ;:OBD1 Code Compatibility describes the various ways you can run code in an ECU other than what was intended. ;:Some 66k Assembler Routines have been commented, and you can look at the commented OBD1 Civ Teg Routines ;:There is an interaction between hardware and software to determine whether an ECU will behave like an Auto Or Manual.

Other OBD1

OBD0 Vtec ECUs ECUs share a lot of features

  • PW0 - ROMs based on the PW0 JDM (89-91 CRX/Civic EF8/9 B16A) but also included is some of the Euro PW0 locations.
  • PR3 - ROMs based on the PR3 JDM (89-91 Integra XSi B16A)

;:ASM662 can be used to assemble and disassemble these ROMs. ;:Hopefully soon there will be commented OBD0 Vtec Routines? for you to look at.

OBD0 Civic Integra? ECUs share a lot of features

  • 91 PM6 - ROMs based on the 91 PM6 (USDM CRX/Civic Si w/ SOHC D16A6)
  • 91 PR4_PA? - ROMs based on the USDM 90-91 PR4 with internal PA sensor
  • 90 PR4_no_PA? - ROMs based on the USDM 90-91 PR4 w/ external PA sensor
  • 91 PM7 - Although very similar to the 91 PM6, George Ricketts and others have done a lot of development with the PM7.

;:OBD0 PM6 PM7 RAM_Locations the PM6 and PM7 code seems to store important values in really similar RAM locations. ;:OBD0 Conversion Formulae can be used to convert values found in these ROMs to real world values. ;:OBD0 Code Compatibility details what code can be swapped into which ECUs. ;:OBD0 Civic Integra Routines are often shared between ECUs ;:Intel8051 assembler/disassemblers can be used with these ROMs

A webpage with some of the ROM locations and formulas is here.


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Revision r1.1 - 19 Feb 2004 - 23:25 GMT - Home.blundar
Revision r1.6 - 12 Apr 2004 - 02:07 GMT - Home.SYnoptic
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