Anyone have any good links for basic starter info on how to program ? I only found a couple of links in the stickies, and they did not work.

I have the motorola reference manual, but I need something a little shallower than that to start.

I'm talking real basic here. Like what does FCB or FDB mean in the HAC? They aren't operations. Why does the HAC say location LC482E when referring to location 482E in the BIN?


Thanks
MIke

 

The FCB/FDB are assembler directives. Search for the ASM11 assembler on the net. It should have a .doc file (text) that describes assembler directives.

The 'patch method demo' has a section where I describe a section of code. This is worth looking at. Should be in the sticky's.

As for addressing (I just covered this in another post today) there is the EPROM address then the address when the EPROM is placed into the ECM.

In the case of the '730 the EPROM is block decoded to begin at $8000. So $C82E - $8000 = $482E. So the physical address is required to be used else the code will jump/fetch to/from never-never land.

RBob.

 

Here's the link for the patch method demo:
Patch Method Demo

Since it would be going out to never, never land, could you put something out in never, never land, or are you limited to what the ECM was "designed" to see? Can you change the limits of what it can see? I don't have any specific ideas that would need this yet, but you never know what one may come up with in the future!

Man, this source code stuff is tough!

 

Sure can. GM does just that with their headsup unit. It is in address block $5000 with some RAM in the $400 area.

Some ECMs have room for more RAM on the PCB that decodes to another block ($1000 block).

With a ROMLess '7747 the ADC address gets moved from $C000/$C002 to $A000/$A002.

RBob.

 

Thanks guys

I'm going to look at the patch method post again. First time I went through it, it looked like chinese. Maybe it will start to make some sense now.


The .doc file with AS11 mentions FCB and FDB, but only in passing saying they are supported pseudo ops. Does not say what they are telling the assembler to do.

I get the addressing thing now.

Is there anywhere I can get an assemble ready source file for the '730 ecm? I dissasembled my AUJP chip, and it looked sort of like the ANHT HAC, but without the comments. Tried to reassemble it and got about 10,000 errors.

I'm slow, but pretty sure than once I get the basics I can do this.

Mike

 

May want to start with the ANHT hac. Cut from the pdf and paste into notepad (NT has no limit on notepad file sizes, else use another flat text editor).

Once all there then start to assemble it. You will get errors, just take them one at a time and fix. Then compare the binary you get to AUJP. Change your ANHT source to same. Many cal values will need to be changed. Some code locations may need to also.

RBob.