Can't program v9 code

**Auberon** · 12-05-2003,02:30 PM

Using
Fluffy2
IC-Prog 1.05c (win2k support enabled)
Win2k
sx28ac/dp (AC0311AA)

When programming mi_91f2.hex everything goes allright. But when trying to program v90_50m.hex most of the times it doesn't program and when it does what is written is very wrong.
Fuse and fusex are correct.
Tried two chips just in case both the same.
Can you help me please? Thank you.

**Emanuel** · 12-05-2003,03:02 PM

IC-Prog 1.05c is no good. It doesn't work for other processors either. I use ver. 1.05a and it works very well.
Before you program an already code protected chip, you must first program it with a blank buffer (all 0x0FFF).

**Auberon** · 12-05-2003,06:24 PM

If I program with fuse 07F9h
which means "code protection disabled" it allows me to program the chip (with v90_hex ofcource). Is that permited or the code needs to have that code protection in order to work? Is there anything else I can do in order to make the hole code-protection thing easyer?

I will also try to program the chip after doing a blank buffer programing.

1.05c seems the same to me just in stead of giving me a "out of retry" annoying error it just jumps directly to verification which is fine with me. By the way I have also tested it with 1.05a.

Thanks for the reply!

**Auberon** · 12-05-2003,06:52 PM

Tried to program it after making it blank. It programs the chip but doesn't give the correct result. Everytime I do the same (make blank the program) I get the same result. (I'll try to upload the result it is giving me)

**Emanuel** · 12-06-2003,04:21 PM

If you program the chip with CP (code protection) enabled, then the IC-Prog won't be able to verify the chip and all that you will read back will be some encrypted data based on the code you have just written. It is perfectly normal to happen so. It doesn't make sense to program the chip with code protection enabled as long as the hex files are public. If you program the chip with code protection disabled then you are able to test the data you have just written. The functionality will be exactly the same.

As for the 1.05c version of IC-Prog, I had troubles with it under Windows 98. I didn't test it under Windows2000. 1.05a works fine under both Windows 98 and
Windows2000.

**Auberon** · 12-07-2003,03:22 AM

I figured it out yesterday (own my own: that being a credit that doesn't make for the fact that I didn't figured it out imidiately). Thanks anyway.
Yes it's a stupid thread. Yes you can delete it.

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