Location | Bytes | Description | Notes |
00bb | 1 | raw MAP | set at 0844 |
00bf | 1 | adjusted MAP | more info... |
00C3 | 1 | Current RPM | also copied to 236h (look at 0816h) |
00C4 | 2 | Current RPM |
00CC | 1 | VSS Sensor | km/h |
00D1 | 1 | Current TPS | Throttle Position (see Tps Sensor) |
00D4 | 1 | TP Sensor |
00D5 | 1 | TPS Delta |
00D7 | 1 | Input into ADCR5 | not connected to a sensor on USDM P72 |
00D8 | 1 | IAT Sensor |
00D9 | 1 | ECT Sensor | |
00DA | 1 | O2 Sensor |
011a | 1 | CEL byte 1 |
011b | 1 | CEL byte 2 |
011c | 1 | CEL byte 3 |
011d | 1 | CEL byte 4 |
011E.3 | 1b | Auto/Manual config bit |
0127.1 | 1b | VTEC bit |
0131.0 | 1b | set if speed > 15 kph, cleared if speed < 10 kph | used to determine if VTEC should be on |
0131.1 | 1b | set when RPM is above VTEC switchover RPM | has hysteresis, related to VTEC logic |
0131.2 | 1b | set when RPM is above some level | has hysteresis, related to VTEC logic |
0131.6 | 1b | similar to 0131.2, but at a different level | not related to VTEC logic |
0131.7 | 1b | similar to 0131.6, but looks at MAP, not RPM | not related to VTEC logic |
0192 | | Rev cut limit |
0194 | | Rev resume limit |
01D2 | 1 | Column of Fuel/Ignition Map |
01D8 | 1 | Low Cam Row |
01D9 | 1 | High Cam Row |
0210.3 | 1b | Power Steering Pressure(PSP) switch input | If pin B8 (PSP) is grounded, 0x0210.3 will read 0 else it will read 1 |
0211.2 | 1b | AC switch | more info... |
0212.2 | 1b | Indicates MAP problem |
0212.4 | 1b | Indicates other MAP problem |
0212.6 | 1b | Indicates TPS problem |
0216.4 | 1b | Vtec Enable Flag |
0216.6 | 1b | Holds 02 Sensor Heater Enable Flag |
0219.3 | 1b | ????????? |
0227.4 | 1b | PA Sensor Enable Flag |
0227.6 | 1b | Knock Sensor Enable Flag |
022d.1 | 1b | VTEC VSS Check Enable Flag |
0236 | 1 | Current RPM in 8bit form (IAB Control @ 4393h routine) |
0244 | 1 | Knock Retard |
0246 | 1 | Ignition Advance |
0257 | 1 | controls ADC MUX Channel | 0 thru 7 |
025A | 2 | Current target idle RPM | function of ECT and tbl_5ba7 |
0356.1 | 1b | Serial comm mode | 1 for 9470 UART mode, 0 for 62500 9-bit mode |
03A0 | 2 | Injector Duration |
03CD | 1 | BARO Sensor |
03D2 | 1 | ELD? | (ADC input 1) |
0f00 | 1 | 82C55 Port A | inputs |
1f00 | 1 | 82C55 Port B | outputs |
2f00 | 1 | 82C55 Port C | outputs |
3f00 | 1 | 82C55 Command Register |
4700 | 1 | memory-mapped digital inputs | bit values modified and copied to 0119 and 0211, includes feedback from A/C switch, VTEC solenoids and others |
P0.0 | 1b | A/C Clutch Output |
P0.1 | 1b | Purge Canister Output |
P0.5 | 1b | IAB Output | previously thought to be P4.3 |
P1.0 | 1b | Left VTEC Transistor Output (IC14) |
P1.1 | 1b | Right VTEC Transistor Output (IC13) |