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%META:TOPICINFO{author="tungsten2k" date="1077010658" format="1.0" version="1.1"}%
;: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. |
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contributing authors, and is covered by the Non-Commercial Share-Alike License unless explicitly stated otherwise. |
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