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;:Bytes:

RAM Alt. Notes
02C.1 bit 060h set if MAP is too high
030h CPL of 031h XRAM-1004h
031h ECT
032h IAT XRAM-1005h
033h   CPL of IAT }
034h   barometer?
036h MAP
037h   CPL of 036h
038h MAP* MAP when 079.4 is set
039h TPS
03Ah TPS
03Bh RPM 8bit?
03Dh 6260 2004 stored on EXT0 If 6260 2000.4 is clear
03Eh 6260 2003 stored on EXT0 If 6260 2000.4 is clear
047h RPM for limits set to 03Dh on EXT0
048h RPM for limits set to 03Eh on EXT0
049h   Prev. RPM
050h   prev. RPM
051h delta RPM difference between oldest and newest RPM values (047 - 04F & 048 - 050)
052h delta RPM bit 017h holds sign of difference (1 is negative)
053h VSS Hi 16 bit
054h VSS Lo 16 bit
05Ch loaded into 6260 2001 on EXT0 If bit 052h is set
05Dh loaded into 6260 2002 on EXT0 If bit 052h is set
05Eh loaded into 6260 2001 on EXT0 If bit 053h is set
05Fh loaded into 6260 2002 on EXT0 If bit 053h is set
060h loaded into 6260 2001 on EXT0 If bit 054h is set
061h loaded into 6260 2002 on EXT0 If bit 054h is set
06Ch VSS 8bit
6Ah   fuel addition of some sort
06Fh   something to do with fuel / 02 reading
070h   something to do with fuel / 02 reading
0A2h   some kind of multipliers for fuel low and high bytes
0A3h   some kind of multipliers for fuel low and high bytes

;:Bits:

bit Short Note
060h MAP CEL bit set if map too high!!
017h   sign of difference between newest and oldest RPM value (1 is negative)
02Eh   set when below RPM limit
057.0 IGN fire Firing number!!!
057.1 IGN fire Firing number!!!
071.1 rpm > 3E,46 (~890,950rpm) target idle??
071.2 rpm > E2,E5 (~5400,5600rpm)
071.3 map > 9C,A3 (~9.3,8.7 in Hg)
071.4 map > B9,BC (~6.0,5.0 in Hg)
079.4 rpm > B7,BE (~3400,3650rpm) -> 038h is used for MAP value if set
079.6 map > B9,C0 (~6.0,4.0 in Hg)
07A.4 map > AE,B9 (~8.1,6.0 in Hg)

;:XRAM (MOVX 1XXX) (5128 XRAM chip)

Addr Short Notes
012h   contains X-2007?
013h   contains X-2006?
032.2 rpm > 06,14 (540,630rpm)
032.3 map > CB,CF (~2.5,1.0 in Hg)
07Dh ADC address stored in this is where 4001 from MOVX is put (ADC)
0A1h   current checksum value
0A2h   next DPH value for checksum

Thanks go to George Ricketts for this list.

Revision: r1.1 - 17 Feb 2004 - 09:37 GMT - tungsten2k { Edit | Attach | History | More }
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