Search found 112 matches

by GZ@hybridka
Thu Oct 11, 2007 1:33 pm
Forum: B.S.
Topic: Idiots guide to disassembly and reading opcode...
Replies: 80
Views: 34204

I use the DTC reporting code sometimes to locate what the RAM addresses are since failures with input sensors always flag errors and DTC addresses have a standard 'map' of codes so you can work out which sensor flags which DTC bit mask bit Whoa, crazy good tip. Never thought of that. This March Sup...
by GZ@hybridka
Thu Oct 11, 2007 12:52 pm
Forum: B.S.
Topic: Idiots guide to disassembly and reading opcode...
Replies: 80
Views: 34204

Sweet little car, not something seen in these parts for sure.

I see all the tell tale signs of the modular building blocks of ECCS in that code. There is a lot that you can do.

If you sent or posted a stock .bin I could go through and help add to the RAM list.
by GZ@hybridka
Thu Oct 11, 2007 12:45 pm
Forum: General Nistune Discussion
Topic: Ostrich 2.0 vs. Romulator
Replies: 7
Views: 2302

Updates coming, im going to need you to test out some ignition hardware soon.
by GZ@hybridka
Thu Oct 11, 2007 12:14 pm
Forum: General Nistune Discussion
Topic: Ostrich 2.0 vs. Romulator
Replies: 7
Views: 2302

The original ostrich is a nice unit as well, might be able to snag one of those a little cheaper than the 2.0 now that its out.
by GZ@hybridka
Thu Oct 11, 2007 12:07 pm
Forum: B.S.
Topic: Idiots guide to disassembly and reading opcode...
Replies: 80
Views: 34204

I have a cleaner datasheet than that one somewhere, I just noticed thats not as nice as the one I have printed out here.

What ecu are you planning to work on, mainly? I dont recognize that disassembly you posted, though it seems valid at first glance.
by GZ@hybridka
Thu Oct 11, 2007 11:39 am
Forum: B.S.
Topic: help needed CA18DET
Replies: 11
Views: 3674

I looked into this code a bit, and it would seem that the CA18 does indeed utilize a full set of 64 points (word wide), at least in some way. Forgive me but I am not really familar with this ecu, I have never messed with VQ swaps and running cars anyways. I see an anomaly in the first few data point...
by GZ@hybridka
Thu Oct 11, 2007 11:20 am
Forum: B.S.
Topic: Idiots guide to disassembly and reading opcode...
Replies: 80
Views: 34204

Got cut a little short there with a laptop freezup , but was able to restore my session without any loss of my post (thank you firefox).

Ill make a post later on with more information.
by GZ@hybridka
Thu Oct 11, 2007 11:10 am
Forum: B.S.
Topic: Idiots guide to disassembly and reading opcode...
Replies: 80
Views: 34204

Cool post, we need more people that know something about motorola 8 bit assembly language! I am in no way capable of giving you even a decent crash course, I too am pretty much a beginner, starting off only using a subset of the language maybe two years ago now. The only past experience I had was wi...
by GZ@hybridka
Tue Oct 09, 2007 4:03 pm
Forum: B.S.
Topic: help needed CA18DET
Replies: 11
Views: 3674

Here is the VQ 16bit table routine from the ka24e, which uses the same MCU (hitachi 6303) , and uses full 64 point. Starts from top. clr X0048 cmpa #$3F bcs LE0CC ldd $7E,x rts ; LE0CC: stab X0047 asla tab abx ldd $02,x subd $00,x bcs LE0DE bsr LE0EC ldd $00,x addd X004C rts ; LE0DE: coma comb addd ...
by GZ@hybridka
Tue Oct 09, 2007 4:00 pm
Forum: B.S.
Topic: help needed CA18DET
Replies: 11
Views: 3674

Here is the CA18 VQ 16bit routine in its entirety. Starts at L802C. L8001: std X0060 ldaa X005C mul std X005D ldaa X0060 ldab X005C mul clr X005C addd X005C std X005C ldaa X0061 ldab X005B mul addd X005C std X005C ldaa X005B ldab #$00 rolb stab X005B ldab X0060 mul addd X005B std X005B rts ; L802C: ...
by GZ@hybridka
Tue Oct 09, 2007 11:46 am
Forum: B.S.
Topic: help needed CA18DET
Replies: 11
Views: 3674

I have heard of some so-called 64 point VQ conversions for the CA18, but I highly doubt this has been accomplished properly. The location of the 64 point, 16 bit table/map within the ROM is not the problem, rather, the code routine that uses the table values would have to be modified to step through...
by GZ@hybridka
Wed Oct 03, 2007 2:17 pm
Forum: B.S.
Topic: VH41DE nistune?
Replies: 11
Views: 3854

You need 4 ignition events per revolution on the V8, the 4cyl CAS spinning at cam speed only provides 2 ignition events per revolution. You still need the 4 events per revolution with wasted spark, the only difference between wasted spark and individual coil fire (cop) is that with wasted spark, onl...
by GZ@hybridka
Thu Sep 27, 2007 1:55 pm
Forum: B.S.
Topic: VH41DE nistune?
Replies: 11
Views: 3854

There is a large flaw in that my theory above, The 4cyl CAS disk would have to spin a 2x cam speed (or crank speed) for that to work... :? And, the maximum RPM the ecu could handle with that configuration would be 6000rpm, the CAS will be spinning at twice the speed throwing all ecu calculations off...
by GZ@hybridka
Thu Sep 27, 2007 12:18 pm
Forum: B.S.
Topic: VH41DE nistune?
Replies: 11
Views: 3854

Though its not worth the effort as there is plenty that can be done with the original V8 ecu (emulator + consult at a minimum), theoretically you could setup a 4cyl ecu to run the V8. You would need to swap in the 4cyl cas disk, and reconfigure the fuel and ignition outputs to batch injection and wa...
by GZ@hybridka
Wed Sep 26, 2007 1:14 pm
Forum: B.S.
Topic: VH41DE nistune?
Replies: 11
Views: 3854

If they are anything like the VH45DE, the 8 bit and 16 bit versions are very similar to Z32 VG30de(TT), both the board style/layout and code arrangement.