Messages

Once the serial number is programmed in version 5.61, the device cannot be locked by serial number. Even in version 4.60.
I have tried with 5 ICs. I can not just lock them again by either versions.

I have started using the older 4.60 version which works fine. If serial number is set in 4.60, device cannot be opened,
I have tried to open with 5.61 too.

I have been using RD2 for quite sometime and have posted only after I was sure.

Thanks.

Power-up device after clicking the ' read device signature' in menu'.

Please see the previous post by me.

The problem is with the latest version 5.61.
After that the device can not be locked by serial number by any older version.

I am waiting for a reply.

Setting the serial number in this version does not work. The verification can be done ( after power on/off).

Worse, once serial number is set by this version, setting of serial number in older
versions also does not work. You can read signature, security and flash (verify).
No message to use password.

My experiments have cost me the only 5 nos. P89V51RD2 left with me.
Some have boot-loader version 6 and some 7.

It was stupid of me to download this 2 days back and update. Fortunately I had an older version (4.60)
setup file somewhere in one machine.

That works, but not after the serial number set by 5.61.

This is a matter of serious concern.

It sometimes takes quite a few attempts and the behavior (the messages) of Flashmagic is erratic at times. The funny part is that it has gone worse in the last few days. It also says that comport maybe in use.

OK, I need to pulse the RESET pin to get into ISP mode on power-up.
Now, do I need to do it by adding hardware to to do so OR can use
dtr/rts pin with flashmagic ? The second option does not seem to be
possible unless flashmagic can do it.

Sorry if I could not make out, but I just want to program these using Flashmagic.

Other than connecting Tx/Rx/Vcc/Gnd (No feed for reset), what pin(s) should be pulled LOW for
getting into ISP mode on power-up ?

dpt

I tried with latest version 4.60. I use power-up to reset. Still it can sometimes
take quite a few attempts.

Thanks.

Just to add clarity to point -3 , 'password does not work' means that the device can be read, OR serial number is reset.

As far as the point 2, I saw the solution in an earlier post of mine after I had made this post.
Uploading boot-loader may solve the problem, but that is not going to reduce the programming work. The current problem
seems to be like the clock-bit getting set before the security bit, both are not being programed with a single byte-write.

dpt

1) My way of getting into ISP mode is to give a command, normally "read signature" and then to power up, before OR after I get the "Reset the Device for ISP mode" message. Sometimes it takes quite a few attempts whatever method I use. That is not much I am worried about.

2) When I program with "Set Security Bit" and " Program Clock Bit" checked, the device programs but I get a message something like " Program Clock Bit" failed. I have to switch-off and power-up again to get into ISP mode and I see the Clock Bit set but Security Unset. I program again and and the security bit also gets set.

Now I have to program twice if I have to program both the 'Security Bit' and the "Clock Bit" (for X2 clock).

3) I am not too sure but if I set the serial password and then reprogram, the password does not work. Now I set the password after I program.
Can we not have a checkbox to set the serial password after the program sequence ?

When I program 89V51RD2 with Set Security Bit 1 and Prog Clocks bits enabled,
two things happen -

1) I get message that Clock bits could not be programmed. But a read shows that it is.
2) The security bit is unset. I then reprogram without ERASE . Now I do not get any
messages and the security bit too gets set.
This is dangerous as after programming with the parameters enabled, one assumes that
security bit is set.

I am programming new device without any erase at 57600 baudrate.

I have tried with latest version too, in fact today, same thing happens.

Andy, even information on available ports can be very useful especially if USB-Serial adapters are used. If portopen or not can be put up, still better.
I have a very short program in VB (I forget but I think it uses API) to detect ports but could not modify to see if open or closed.

BTW I have a funny problem in my laptop (same version XP but updated in laptop). The same USB-Serial Adapter BAFO -810 that works on desktop
does not work on laptop, and even if I remove it, the comport shows as available. Desktop is Sempron 64 bit, laptop is Turion 64-bit, both AMD-64.

BAFO 810 works on desktop with 89C61X2, but not 89VRD2.

Thanks.

Thanks Andy. Actually I have opened it in wine. Shall try to program and get back.

I know that I am reviving a pretty old thread.

As a Linux user (most of the time), I feel that we should have ISP software for Open Source OS as Linux.

Desktop Linux is quite mature today.

NO. I keep psen shorted to ground till about 1 sec after power-up.
Justlike for P89C61X2. The old H version too worked this way.

89CRD2BN can be accessed till programmed. Not after that.