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Cyhist Apr. 11 1998 A
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========================================================================= Date: Sat, 11 Apr 1998 07:34:15 -0400
Reply-To: bradmcc@cloud9.net
Sender: "CYHIST Community Memory: Discussion list on the History of
Cyberspace" <CYHIST@MAELSTROM.STJOHNS.EDU> From: "Brad McCormick, Ed.D." <bradmcc@CLOUD9.NET>
Organization: AbiCo. <![%THINK;[SGML]]>
Subject: Re: FOO on you!! binary, octal, hex...
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Community Memory: Discussion List on the History of Cyberspace ______________________________________________________________________
The more I think about it (or sleep on it...), the more I see how much I have
forgotten. In the 360 assembler world, weren't there constants in the form
=x'f00f00'
as in: LA r3,=x'4' (make GPR3 have the value 4)
And binary:
=b'011110001'
? and weren't *octal* numbers coded so that they looked like decimal numbers, except that they had a leading zero, as in (?????)
L r3,023
(which should load general purpose register 3 with the 32 bits of storage contents starting at location 19 base 10? (Unless you were on a 360, in which case I believe you'd get an operand-alignment error "program check"???)
I never would have thought of coding
LA 011, 011
Would the assembler have given an error
message on that, would it have loaded GPR9 with 9 base 10?
And, of course, in html we how have colors described like #ffdead.
I should have kept all the IBM system reference manuals I collected in my work as a systems programmer....
Anybody remember the lovely *control block diagrams*? ...In the beginning was the CVT pointer at (???) 0x10 (???), and then I seem to remember they moved it. But CVTPTR was the navel of the world (and a not so bad world, at that!)
\\brad mccormick (=x'C2D9C1C440D4C3C3D6D9D4C9C3D2' ? -- EBCDIC's starting to come back to me....)
--
Mankind is not the master of all the stuff that exists, but Everyman (woman, child) is a judge of the world.
Brad McCormick, Ed.D. / bradmcc@cloud9.net 914.238.0788 / 27 Poillon Rd, Chappaqua, NY 10514-3403 USA ------------------------------------------------------- <![%THINK;[SGML]]> Visit my website ==> http://www.cloud9.net/~bradmcc/
______________________________________________________________________
Reply-To: bradmcc@cloud9.net
Sender: "CYHIST Community Memory: Discussion list on the History of
Cyberspace" <CYHIST@MAELSTROM.STJOHNS.EDU> From: "Brad McCormick, Ed.D." <bradmcc@CLOUD9.NET>
Organization: AbiCo. <![%THINK;[SGML]]>
Subject: Re: FOO on you!! binary, octal, hex...
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit
______________________________________________________________________
Community Memory: Discussion List on the History of Cyberspace ______________________________________________________________________
The more I think about it (or sleep on it...), the more I see how much I have
forgotten. In the 360 assembler world, weren't there constants in the form
=x'f00f00'
as in: LA r3,=x'4' (make GPR3 have the value 4)
And binary:
=b'011110001'
? and weren't *octal* numbers coded so that they looked like decimal numbers, except that they had a leading zero, as in (?????)
L r3,023
(which should load general purpose register 3 with the 32 bits of storage contents starting at location 19 base 10? (Unless you were on a 360, in which case I believe you'd get an operand-alignment error "program check"???)
I never would have thought of coding
LA 011, 011
Would the assembler have given an error
message on that, would it have loaded GPR9 with 9 base 10?
And, of course, in html we how have colors described like #ffdead.
I should have kept all the IBM system reference manuals I collected in my work as a systems programmer....
Anybody remember the lovely *control block diagrams*? ...In the beginning was the CVT pointer at (???) 0x10 (???), and then I seem to remember they moved it. But CVTPTR was the navel of the world (and a not so bad world, at that!)
\\brad mccormick (=x'C2D9C1C440D4C3C3D6D9D4C9C3D2' ? -- EBCDIC's starting to come back to me....)
--
Mankind is not the master of all the stuff that exists, but Everyman (woman, child) is a judge of the world.
Brad McCormick, Ed.D. / bradmcc@cloud9.net 914.238.0788 / 27 Poillon Rd, Chappaqua, NY 10514-3403 USA ------------------------------------------------------- <![%THINK;[SGML]]> Visit my website ==> http://www.cloud9.net/~bradmcc/
______________________________________________________________________
