EECTuning.org

Guys, Just for completeness, it's worth a quick review of the PSW on 8065 CPUs and bank operation. Whilst the 8065 PSW lower byte contains the various status flags for conditional jumps (zero, negative, etc), the upper byte contains current program bank (which I take to mean 'code bank'), the curren...

John, Just discovered a bug in the way code blocks are queued for scanning, which may also explain some of the undecoded sections in CARD. Effectively this bug means some block scan combos are lost entirely. Found it when working on the multibank argument emulate/decode. So I'll fix that first and r...

Thanks John, Methods 1) already thought about possible endless loop, so emulation has an 'opcodes executed' maximum, currently at 1000 (may change this) 2) Interesting idea. I admit I had not thought that way at all. I already have a 'called by' chain, which is necessary for subroutines (and argumen...

<code snipped> Load a word, push it later and return is a common theme for overlooked code. Maybe scan any for code any time a load push return sequence is encountered. Yes, A9L does that, and I've been stuck on how to handle it properly. The problem is that a register is loaded with an address in ...

Thanks. I have mentioned previously how all the blocks of code are overlooked and how fixing one detail snowballed a pile of code. I will try to find it. The start of many structues are found. Good that it finds the start points at least !! I have been playing with the idea of some kind of 'data pa...

John, I found the bug with the 4456 and 4459 args. I think that's all working right now. Here is a new listing in case it's any use to you. Code should be right (I hope!), but data isn't ! I see there are still some blocks which look like code but are not decoded, along with some obvious all-data st...

Thanks John, that's fantastic - will check out your issues spotted. Possibly some new code trick I didn't see. Often, one example of a faulty args decode, will apply to all those subr calls, so improvement can be quite large from one fix. I hope. I see that some of the 4459 calls show 6 args correct...

Jsa - John, VARIABLE ARGS !!!!! I think I may finally have cracked a method to get the arguments working, with a part-scan, part emulate approach, which is a 'merge and modify' of a couple of previous attempts. I have attached a CARD listing done with NO COMMANDS by current development SAD, so it's ...

Taking a break from m0m2 since it's useable, so I'm focused on some SD tunes that I've cloned. One in particular is 8SD, which doesn't seem to follow conventional wisdom with Rbases. Certain subroutines have their own offsets defined which makes for a hell of a time disassembling them. Does SAD hav...

'Console present' Yes - quite a few bins have that style of check where 0xd00 (or similar addresses) appear to be a console status flag, and there are various other 'set' addresses around for plug in or special function chips/peripherals. But like the cal console (0xd000 or d006 or d009 or e000 or ....

No, I designed the 'signature' routine after the unix regular expression (= RE), up to a point, but even that isn't flexible enough. If you've never used this, the RE is embedded in a wide range of unix/linux edit and search applications, and although a more complex RE looks like gobbledegook, the s...

While testing, I ran into a problem with vects (not same as reported by jsa, but still....) and I discovered yet more CRAZY stuff. first - I changed vector list detection in 3.08 as it wasn't working with later binaries - so I changed the 'signature' options for a 'detect' type (when SAD arrives at ...

The post was about a cold turkey 1st run of SAD against a bin, yeah understood 2nd step of creating a dir with args set would improve 3.08 results for the changes you describe. Pondering Bank8, have any been sighted that; * Don't start with FF FA * Don't have Checksum at 0x200A Is more required tha...

motorhead1991 wrote: ↑

Wed May 15, 2019 3:53 pm

It was this command:

Code: Select all

bank 0 0 dfff

It complained of a fill address out of bounds despite removing the "fill" commands from the dir file.

Ahhh. OK, could be a screw up in the command parser then....
Thanks.

A note of where I'm up to. I gave up and went back to 3.08 for a do over ! This wasn't a complete waste of time as I did improve quite a few things on the way, and wrote some new stuff which I have kept. But the various main ideas didn't pan out. The heart of the issue is how to balance a static ana...

Guys, got the bin, will have a look. Confirming - Neither 3.07 or 3.08 work well for subroutines with variable arguments. In progress to try to get a solution to that. Can do manually now by using the 'args' command to manually set number of data items for each subr call. (but it's a PITA) Main diff...

Speaking of arguments, the default output for the lookup subroutines is incorrect for URAL at least. SAD by default is taking 2 bytes as the first argument, but really needs to take 2 words for the 2 arguments. Looking at the AD_Cmd structure and associated subroutines it seems the SU naming of loo...

<Sigh !!> The vector list detect code is supposed to stop at anything which is detected (i.e. code or not vector data), so I've obviously managed to introduce a bug there, and/or the manual command doesn't work either, so I must have messed up the command merging also. I did change command bit due t...

I've added the old 80C196 user manual into a docs repository in Github/openEEC for info anyone wanting to know 8061 or 8065 CPU core basics, along with Tom Cloud's original doc which explains the more specialist Input/Output mechanisms and extra/different opcodes. Enjoy !! I will add the basic EEC g...

Just seen this (on holiday at the moment). to learn from scratch without SAD, the 8061 is based upon a 8096 core cpu, so that disassembler 'sort of' works. 8065 seems to be a unique extension as far as I can tell (i,e, no 8096 equivalent). You can still find some stuff on 80C196 CPU (which is pretty...

Some interesting history there... I was already wondering about the idea of a software 'engine model' (the idea of fuel, spark, throttle to get a basic rpm response) for a complete emulation of an EEC. So the fact that Ford did it (or partly did it) makes perfect sense to me. Interesting stuff about...

Yep, that's all I was trying to say - that there IS stuff around which could run that ancient software. May be hard, may not be.... don't know. As I understand it - The emulators *themselves* are 32 or 64 bit, but they present/emulate a 16 bit address range. Virtualbox/VMware actually use the 16 bit...

Cgrey, Actually that's NOT TRUE !! There are quite a few 16 bit emulators which run perfectly on modern 64 bit computers. Even common virtual machine systems (Virtualbox, VMware) have 'DOS Mode' options, which are 16 bit (but expect x86 programs). There are emulators for many, many 'foreign' hardwar...

No doubt they did, but don't know what. We used to 'burn' PROMS for quite a bit of custom stuff (for example old style map displays before full graphics) and the equipment was standard common stuff which would burn a range of (std) PROMS in various sizes. On the basis the Ford ROM was itself special...

I found a bug in the symbol naming in SAD, and whilst checking this out I realised I had missed the fact that the 8065 CPU has the ability for FOUR different functions for its special registers - by SIZE (word or byte) , READ, WRITE. I had done read and write options for symbol naming for 8061, but ...

Agree totally. When doing an engine build, there are a few 'common' mistakes which we can all make, and as embarrassing as they are at the time, it sure helps with the learning curve for the next one ..... Stuff I, or friends have managed to do (European engines mostly ...) Dizzy 180 degrees out. In...

Good stuff !! Does it still use my 'C' code (compiled) with a Java front end ?? I ask as I'm completely ignorant of Android and 'smart device' type OSes, being one of those ex-tech types that has a phone for actually *talking* to people and nothing else. But I do know Android is based on Linux. I di...

Just reread this and I have a comment to all ..... Are you sure the VAM maxes out that early ? 3k seems too early for a 4 cyl OHC airflow. Several European engines with VAF/VAM setups ran OL ALL THE TIME as they were still leaded gas, and had no EGO at all. They never ignore the VAM, but add fuel (v...

Yes, there is (rightly) a lot of reuse. For example, so far I've only seen 2 1D lookup (function) code versions (OK some with minor variations) and 2 versions of the 2D code (tables). Why reinvent something which works ?? Mathematically and codewise, the way the 2D data is interpolated is very neat ...

Update - I feel like I'm stuck in the "all alike maze" in the old text adventure game "...you are in a maze of twisty little passages, all alike..." in a kind of multifaceted catch 22.... To cover THIS bit I need logic to do THAT, but THIS bit in CARD needs it to work differently, and THIS bit in he...