Using Larger PROMS
#1
Using Larger PROMS
Does anyone know if 27c512 -150’s will work in the place of the 27c128 in a 165?
Since it looks like everything works from the end of the chip forward, can I get away with just burning a 27c256 or 512 as a 27c128 without stacking the bin?
Since it looks like everything works from the end of the chip forward, can I get away with just burning a 27c256 or 512 as a 27c128 without stacking the bin?
#2
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Car: 88 Camaro SC
Engine: SFI'd 350
Transmission: TKO 500
Axle/Gears: 9-bolt w/ 3.23's
You could ground the unused addr pins on the chip and jsut write the bin to the first section of the memory. Wouldnt have to use offsets or anything. Either that or connect them to the +5 volts and use the last bank of memory on the chip.
#3
27c512's will work just fine for you 165 ecm. All you need to do is set the device start at C000 and load the bin and program, that is if your using the PPII for burning. That puts the bin in the last part of the eprom and it works just fine.
#4
clippjr8… beautiful… THANK YOU
That put the actual data right at the end of the bin without me breaking 10 different things trying to stack or copy 0’s into the first ¾ of the bin…
I’m sure that this ranks as a dumb question, but is there a way to calculate this, well, I’m sure there is, how? Where would I start writing my 16k bin if I was using a 27c256?
That put the actual data right at the end of the bin without me breaking 10 different things trying to stack or copy 0’s into the first ¾ of the bin…
I’m sure that this ranks as a dumb question, but is there a way to calculate this, well, I’m sure there is, how? Where would I start writing my 16k bin if I was using a 27c256?
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Car: 88 Camaro SC
Engine: SFI'd 350
Transmission: TKO 500
Axle/Gears: 9-bolt w/ 3.23's
On a 256k eprom, if im not mistaken, the start addr. should be 0x7800 for a 16k bin in order to get it at the very end of the eprom
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Car: 86 Monte SS (730,$8D,G3,AP,4K,S_V4)
Engine: 406 Hyd Roller 236/242
Transmission: 700R4 HomeBrew, 2.4K stall
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just posted one
There was a writeup just recently on one of the posts that pointed to a "hex how to" .
Magnus or Grumpy did it a bout 1-2 weeks ago.
Do a search, I'll try to find it again and put a link here.
Magnus or Grumpy did it a bout 1-2 weeks ago.
Do a search, I'll try to find it again and put a link here.
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Actually, that writeup is on Mangus' site.
Understanding Hex
A very good writeup indeed! Funny thing, for conversions to decimal, he does the exact thing I do.....Windows calculator!
Understanding Hex
A very good writeup indeed! Funny thing, for conversions to decimal, he does the exact thing I do.....Windows calculator!
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Car: 86 Monte SS (730,$8D,G3,AP,4K,S_V4)
Engine: 406 Hyd Roller 236/242
Transmission: 700R4 HomeBrew, 2.4K stall
Axle/Gears: 3:73 Posi, 7.5 Soon to break
Thanks for finding it.
I get lost alot
I get lost alot
#10
A very good writeup indeed! Funny thing, for conversions to decimal, he does the exact thing I do.....Windows calculator!
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Car: 84 Z28
Engine: 355 (fastburn heads, LT4 HOT cam)
Transmission: 700R4
Axle/Gears: 9-bolt, 3.27
Originally posted by JP86SS
Thanks for finding it.
I get lost alot
Thanks for finding it.
I get lost alot
Hex can be difficult to absorb. I still get lost in it sometimes with just counting. Ya know 10, 1a. Or 1f, 20....Just out of the norm for our way of thinking!!!
I'm still having issues with some of the calculations I need for making things convert in ECU files...... Oh well, I'll have to find some time to work on it some more when my brain's not so badly fried!!
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