3.1 Kickstart 40.70 vs 40.68?

[desantii]

I recently got an Amiga 3000 that has kickstart chips 40.70. Just wondering what the difference is with the 40.68 ones? I had never seen 40.70 before except on a 4000T
 
thanks
 
PD: It does say on the sticker "Pilot Production Version"
 
Reads as 40.70 inside workbench as well

[desantii]

The 4000s I ahve seen alll use 40.68 except the 4000T (40.70). That is why I thought is was weird to see a 40.70 for teh 3000
 

The 40.68 ones were made for the A1200, and the 40.70 ones were for the A4000, I don't think you can use the 40.68 version in an A4000.

[desantii]

I'll do a grab tonight but don't have the other files to compare against, I can send to anyone if you have the files for the compare
 
 

See http://www.gregdonner.org/workbench/wb_31.html
 
40.70 was planned for the 3000, but the SCSI driver was causing problems so they dropped it back to 40.68.
 
You've got a rare set of chips there! Grab the ROM to a file and do a byte comparison against 40.68 or 4000T 40.70

[desantii]

This one does have the workbench library, its for an A3000 not the 4000T
 
 

Grab ROMSplit from http://www.doobreynet.co.uk/beta/index.html and compare away. The difference should be, as mentioned, lack of workbench.library and differernt scsi.device to support A4000T SCSI controller.

[desantii]

Yes, physical chip. Has a sticker that says "Pilot Production Version"

 

My A3000 had KS1.4 and the A3000 version of 3.1 v40.70 (plus the special KS1.4 extension) on a file in DEVS:
 
You sure these are physical chips you've got?