DIY PROMDo It Yourself PROM chip burning help. No PROM begging. No PROMs for sale. No commercial exchange. Not a referral service.
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ZIF-to-ECM Adapters, ZIFs, & 29C256s still available, Free ALDL Software...
Folks,
If anyone is in need of a Memcal/ZIF/ECM/EPROM adapter, a few Flash chips, or a ZIF or two, just let me know. I might bail after this last batch runs out depending if people still are in need. If you have any questions, just let me know.
Photos of adapter installation:
<img src="http://members.cox.net/fcmoates01/install-s.jpg">
Craig, I will make this "sticky" so people can easily find this post. I just recently got private e-mails by a couple of people asking where they could score an AT29C256 and I suggested they make a post saying they were looking for them.
Also, could you make a edit to your post so the "link" to your software is available?
Hey I am VERY intrested in the chips just trying to get more info on what I need to get started So give me a couple of days to figure it out or maybe even some advise and I'll be placing my order!
Originally posted by steve8586iroc Does anyone know if this will fit the 7746 tbi ecm? If so I could be very interested.
Steve
746, these are the 2732As which have the plastic holder thingy? I think I figured something out that will work like a charm. Cheap, too! Jameco part # 39351. I haven't tried it with a working unit, but I test-fitted one off-line with a chopped-up 28-pin version, and I really think it'll work without a hitch.
If anyone cares to try it out and give feedback on level of success, that'd be good. I get a real good feeling from the way it fit in there today though. Cound mount a ZIF in there too I suppose with a little material shaved off...
Craig, thanks for thinking about us little guys in the tbi world and looking into the posibilities for our lowly ecm's (L03/L05). As far as the zif goes would one need the Jameco piece to install it on the ecm? Will you be supplying the needed parts or should I just go to a electronics store and purchase them?
Thanks again for going back and more than answering yes or no to my original question. :hail:
Got to talking with a couple of other folks who were similarly interested, and they sent me some loaner pieces (ECM & EPROM/Holder). Tried a few things and this is what I came up with.
I guess I could make up some shaved ZIF pieces (it will take some doing to get it to fit nicely I think), but man, for $0.59, that little machine-tooled 24-pin collet socket seems like the deal. You could just get 10 of em along with 10 EPROMs and be a busy bee.
Next time I place a parts order (which might not be too long, need some Digikey stuff for another project), I'll get a few to have on hand. I'll give a shout when that happens. Until then, if you can get a socket like that Jameco one (not your typical socket, this one is 'meaty' with round legs), you should be in business.
What's the application? Maybe someone else can answer for sure. If you could post a picture of your ECM's Memcal slot, it would be most helpful...
-Craig
i have recieved my adapter from craig moates and it is excellent quality but i have a question , it looks like you still have to unsolder the factory chip to place it in the pocket programmer to get an intial program to start modifiying ...
is there a place i can download a stock program for a 92 5.7 formula so i can leave my factory chip undisturbed incase i have a any programming problems as i learn the burning process ?
I need an adapter and 2 flash proms. Will be ordering tomorrow if you still have some.
__________________ '88 IROC TPI 355, '69 truck 4-bolt, fully balanced, 9.75:1 compression, fully ported '70 truck heads(for now), Harland Sharp 1.6 Roller Rockers, Comp Cams CS 252AH-12, ported '86 TPI converted to speed density, Crane AFPR, Pro-Built 700R4HD and 2500 stall, Flowmaster 3 inch cat back, Edelbrock TES headers, Catco 3 inch cat, all emissions equipment is still intact and I burn my own PROMS.
Best E.T. with TBI 305: 16.11 @ 89
G-Tech with new motor: 13.50 @108 (2.73 gears!)
In memory of Dale Earnhardt, I'll miss cheering for that black #3 on raceday!!!
Just got the last of the parts in tonight. Put together a prototype, compiled a 4megabit bin, and burned it.
Of course, I had to stick it in my 87 and test it out...
Works like a charm best I can tell. Of course I put all the same images at different locations, so no difference was apparent upon switching. No stumbling on-the-fly at all, that's for sure! A bit surprising, but pleasant nonetheless.
Next I will put together a compilation with varying idle speed specifications so that the switching can be verified. I'm sure it's working correctly though. I'm not 100% happy with the switch placement (had to put it at an angle due to an error on my part, but it's actually kinda cool like that). Also the 4 jumpers onboard are in a bit of a hard to get to spot, but only one needs to be accessed, so I might relocate or have a dual mapping for easier placement.
So, bottom line, the thing is ready for shipment. Are you ready? I don't think you can HANDLE those many programs on one chip!
I'll get some pics of the unit posted over the next few days along with some other stuff.
Happy, Bruce? No, that's one of your little friends. I bet he's moreso than usual about now though...
Uhhh, yeah, it may be fun trying to keep track of 16 (or 32)calibrations on one chip. Hey, you didn't mention a magic number. And will this work with your easy adapters or is it to bulky?
This adapter will replace the previous version. It can also be used AS the previous version (with 27C128s, 29C256s, etc). I'll still have the old version, as this new one is a bitch and a half to assemble.
I don't know about cost. I think around $75 or so. I've gotta look at the costs again. The chip and all is included.
Do you still have the 730 ecm adapters? I need to order one for a friend. Drop me a line at gsfranks@hotmail.com if you would. I don't get to this board much.
Is there a EEPROM to use in place of the 2732A? I'm gonna' get a couple of the AT29C256 EEPROMS to replace my stock 27C128 EPROMS. I figured I'd pick up a couple of EEPROMs for my buddies Grand National while I'm at it, thats if they make them. Thanks in advance for any guidance you can offer.:hail:
Sure, why not? Maybe combine it with the other post and purge some 'fat' content. Might need some pruning, take whatever liberties you desire.
Of note, the 040 switcher has been proven on the 1227165 systems (my own to be sure). However, I have yet to get a successful test on a 1227730 or LT1 setup. Don't know why. I've got a new design in hand now, and it might work, but I'm waiting still for some feedback. So don't get too anxious on the 040.
I'll try and get the remote display/switch available pretty soon. It's (hopefully) obviously pretty rough, solder's still warm. Need a 4-bit inverter. Have to reverse the reverse. Seems like every end of the circuit wants something different...
Also, I've talked with 'Todd Austinson' of the SyTy group. Turns out he put together something similar to this whole switcher thing a couple years back. I suggested he might want to get into the 3rd gen area with some devices, so we might be seeing some of him around here. He's got some ideas also, and I'll offer up what he has to contribute on his behalf.
Dang Craig, that's SWEET. I guess I'll have to finish up the BIN Compiler so all the guys who buy these off ya have something cool to manage all those BIN files with....
Okay, I added a 74HC04 to the display and it's properly inverted now off the pulldown resistor array. Shows the proper switch position unlike the complement it was showing earlier. Now I've gotta get a PCB which will work and some kind of holder / box rigged up. Stay tuned...
The LEDs draw around 80mA, we might need a separate +12v line to power it. Not a problem, right?
Originally posted by Craig Moates Okay, I added a 74HC04 to the display and it's properly inverted now off the pulldown resistor array. Shows the proper switch position unlike the complement it was showing earlier. Now I've gotta get a PCB which will work and some kind of holder / box rigged up. Stay tuned...
The LEDs draw around 80mA, we might need a separate +12v line to power it. Not a problem, right?
Simply put, you are da shiznit . I cant wait to be able to use this thing!
Craig,
I just wanted to say nice job. You are making good headway since the last time I have visited this site.......way too busy at work over the past few months.
I think before I know it, you will have a on-the-fly tuner probably like the one I have built last year. It is good to see that everyone is realizing that tuning while the engine is running is a good thing. That is, as long as you document what you did and are doing while tuning.
Good work.
Cool! I'm actually doing my own design for the 29C010 chip (8 programs) and using a binary counter switch (the kind you click up or down and changes the number) am only going to use 0-7 .. (8 would give you program 0 and 9 would give you program 1 if you decide to click all the way around ... oh well .. perhaps a 29C020 chip and just use 10 spots? Haven't decided.)
Anyway, Craig, I made a schematic that put inverters in the circuit, that way, when the switch is closed, it'll provide a high at the address line. I have it around here if you want to see it. I would like some input as to make sure I'm right on this.
As I see from the schematic at DIY, it looked like closing the switch would pull the pin down to 0 ... which a) wouldn't work right on the counter switch and b) just easier to remember ON is ON and OFF is OFF!
Yeah, the whole high-low thing on the non-inverted layout requires that you keep straight what the memory locations are, and essentially stack your programs 'backward'. I've been using 10k, but then again I've been having trouble with the 730/LT1 units.
Another thing you can do (I think, haven't tried) is tie the address legs to resistive ground and then switch a +5v supply to each leg, so the legs will be in ground state until the supply is switched. Might save a little on circuit complexity.
When it came time to wire up a display, I had to add an inverter. Used a 74HC04, plenty adequate. I thought I could just pull legs low and get switching, but turns out I still had to give legs +5 or gnd. You're going to have to tell the circuitry the truth at some point right?
I was thinking about a counter deal on a remote switch, but one problem I thought about was how to retain the last setting? I guess a little CMOS battery could do the trick. Something to think about...Wait, you're talking about a pushwheel? That's cool. I think you can get those in octal & maybe even Hex encoding. Might give you some more flexibility. I remember having to look around quite a bit though.Those things look pretty sweet. What I was referring to above would be more of a digital IC counter, so without a display you wouldn't know where you were.
I am not sure of why, but I'm thinking it's not a good idea to hook up any data lines to straight Vcc. I included a a schematic I made up real quick, showing the use of a hex inverter chip (7404).
I'm thinking the same as you in respect that you don't want to short Vcc to Ground so you need a resistor in there for load. Where to put the resistor? Doesn't matter, as long as it's in the path. BUT, electricity takes the path of less resistance - an old text book rule - what if Pin A14 has less resistance than 4.7K or 10K ohms? Not sure if it's true, but it may mess things up a bit. I feel this schematic should conform to the electronic engineer's code ...
You wanna prom burning kit do ya? You can get one at Batronix.com. Ships from germany, costs $32 plus $8 for the ZIF and $8 for shipping. Get's here quick too. Software is $25 to register. Easy to put together. You need a power supply and parallel extention cable, though. Luckily I had both. Just an idea, but the way it adds up, may as well opt for the already put together Xtronics one ...
Man, that Willem one is a nice one. Here's the Batronix. The reason why I picked it was because of the software. Super easy to use and tried a few software options before picking this one. The one that Batronix offers, it was easier to "stack" codes for the switching circuit Craig has (and a variant I'm working on). Not sure about Willem, may check that out too.
I'll send you an email regarding shipping since im here in Hawaii. Thanks!
. I cant wait to be able to use this thing! 
