As with the '584, most of the USPTO prior art on the '148 is using INMOS material from the 80's. The following link is comparative:

http://www.agoracom.com/ir/patriot/messages/641231

I believe that the response to the '336 is equally valid for the '148, where applicable. It seems that the examiner has done a search on relevant terms and subsequently used ones that appear to fit, without actually using a person of ordinary understanding from the 80's to qualify the terms. It is not like-for-like and I still believe that it is therefore incommensurable.

March, 1983

IBM announces the IBM PC XT. It adds a 10 MB hard drive, three more expansion slots, and a serial interface. With 128KB RAM and a 360KB floppy drive, it costs US$5000

http://www.fortunecity.com/marina/reach/435/comphis4.html

Happy browsing the links at the bottom of the above linked page.

Be well