> On Thu, 8 Nov 2007 10:14:42 -0000, Van Dalsen, Herbie wrote: > > >Apologies, I keep on forgetting that the '8' just signals the above the > >line, you and Tom and all the others are quite correct with the > >x'7fffffff', I have it now... it is a pitty that IBM did not use the > >lowest bit to signal the line... x'00000001' for 24-bit and x'00000002' > >for 32-bit, it would have meant less wastage. Because you would have > >lost the first few addresses... Tom Marchant said... > huh? What "wastage" are you talking about? I'd suggest that you read > chapter 3 of the principles of operation. > > What do you mean about "signaling the line"?
I think Herbie is just confused. CC ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
