16 votes
Accepted

How many transistors in the CDC 1604?

The information to answer the question "exactly" is available on the internet, but I'm not going to do the arithmetic for you! The Maintenance Manual (http://bitsavers.org/pdf/cdc/1604/...
alephzero's user avatar
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10 votes
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Why did the CDC 6600 expand the word size to 60 bits?

At Ed Thelen's website one can find a pdf copy of "Design of a Computer - The Control Data 6600" by J.E. Thornton (Scott, Foresman and Company, 1970) with a foreword by Seymour Cray. Thornton was "...
Jon Custer's user avatar
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7 votes
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CDC 6600 system console

In simple terms how does this vector drawing system work? Like essentially like an oscilloscope. A beam is used to draw on the screen, controlled by two voltages for X/Y. Not much different as a TV, ...
Raffzahn's user avatar
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6 votes
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Was this FORTRAN "extension" originated by IBM?

I can't say whether IBM invented this extension or even whether any IBM compiler ever supported it, but at least as of the IBFTC FORTRAN IV compiler for IBSYS version 13 (manual dated 1968), ...
dave's user avatar
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4 votes

Was this FORTRAN "extension" originated by IBM?

DEC PDP-10 Fortran documentation says the target of an assigned go to can be a variable or an array element. It sounds like it would allow the construct discussed in this question. see manual This ...
Walter Mitty's user avatar
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4 votes

CDC 6600 system console

Specifically a sub-answer with respect to fonts: Don't know about the CDC 6600 but in the vector graphics world the Hershey fonts ruled - at least until the very late 70's, early 80's. And for ...
davidbak's user avatar
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3 votes

What disk packs are compatible with the DEC RM05?

The RM05 is a CDC SMD drive by all mechanical/drive means, like with many of the compatible manufacturers (Ampex, Nec, Fujitsu, Siemens). Thus any of the compatible 300 MB SMD packs will fit, no ...
Raffzahn's user avatar
  • 224k
2 votes

Was this FORTRAN "extension" originated by IBM?

The 1966 ANSI standard X3.9-1966 ANSI standard (https://wg5-fortran.org/ARCHIVE/Fortran66.pdf) just says A GO TO assignment statement is of the form ASSIGN k to i where k is a statement label and i ...
cup's user avatar
  • 2,525
2 votes

Why did the CDC 6600 expand the word size to 60 bits?

Three factors come to mind: Cost is a function of word size. Performance is a function of flexibility. Moore's Law The second point encourages the selection of a 'good' word size. Good, here, means ...
Jim Sawyer's user avatar

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