What do you mean by that?
I bought my A600 from eBay. The next mini-upgrade was the 1MB Chip Expansion which I bought again from eBay.
Next step was the 3.2HD that I bought here in Greece along with the 2.5 to 2x2.5 cable.
I also purchased from eBay the 3.1 Kickstart 3.1 ROM, the 3Com PCMCIA NIC and the Compact Flash to IDE Adapter which I use as a slave (Amiga Formated) HD. The serious upgrade though came from
www.animart.pl where I got the M-Tec 630 (68030@42Mhz, 68882@40Mhz FPU, 4MB Fast).
My latest addition to my miggy was the Cocolino from Vesalia which I hacked. (I removed the serial jack and connected via short cables the Cocolino PCB to the Motherboard. The case now has left to the original mouse port an PS/2 interface!!!)
As for software I used the AmigaOS3.9 with BB1 & BB2 despite my worries that it wouldn't run on a miggy with only 4MB of Fast RAM.
The A600 runs perfectly and very fast and I couldn't be happier! The CF is used for data exchange with my laptop using UAE (via mounting the CF as an Amiga HD!)
You can see in the images section 3 pictures of my setup. (before I buy the cocolino)
I hope you got what you've asked :-)
If you have a question feel free to ask