Mis-matched 1200 Kickstart ROMS?

[XDelusion]

I just got a couple of 1200 3.1 roms for my Amiga, but the data on them is different, so I'm curious if it would be unwise to use them together, or what does this mean exactly?

The 1st chip has this:

KIckstart v40.68
Amiga 1200 U6A
83-97 Amiga inc
etc


The 2nd this:


Kickstart V 40.63
AMiga 1200 U6B
83-94 Amiga Inc
etc

[XDelusion]

Mine have stickers on them, and say nothing more than what I typed out, there are no 391773-01 (high) and 391774-01 (low) numbers anywhere...


If I try it, do you think it would fry?

[XDelusion]

I popped them in, A on bottom, B on top, with the chips to the right most side.

At first it only booted to a black screen, I then turned it off and on again, booted all the way but my serial mouse would not work anymore.

Turned off again, soft booted etc. Same thing, no mouse.

Put 3.0 roms back in, now it keeps doing the same thing, but occasionally if I softboot, the serial mouse will work, but not all the time like it used to...


EDIT

If I boot up and the mouse does not work with the 3.0 roms, I just unplug the serial mouse, plug it back in and then it works all of a sudden, will test with 3.1 roms.


...and that works too, same thing though, I wonder why the serial port is suddenly acting up.

Anyhow WorkBench says I have Kickstart 40.68 so I assume that maybe there is nothing wrong with this set, and that they only needed to update one of the two chips?

[XDelusion]

Must be... or I'm pulling rabits out of my @ss.