13cb294274
New Hardware support: - IBM 653 Storage Unit: provides machine opcodes for Floating Point, Immediate Access Storage (IAS), Three Index registers, Cards Punch-read synchronizers 2 and 3. New Software included: - FORTRANSIT: version II (S), plus run time PACKAGE with standard Fortran functions. - Reorganized sw directory, separating each language in its own folder. Each one Includes a 00_readme.txt file with restoration notes and comments. New features: - Support for SOAP opcode mnemonics in addition to regular IBM mnemonics - FAST / REALTIME CPU options - PROP pseudo register - CARDDECK ECHOLAST command
26 lines
717 B
Text
26 lines
717 B
Text
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Restoration comments May/2018
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Floating Point Interpretive System (BELL interpreter)
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From Bitsavers Manual 28-4024_FltDecIntrpSys.pdf
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Do not uses the loader stated in manual.
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Instead, I wrote a loader (SOAP source code is_sys_load_src.txt)
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that allows reading the original listing from manual and generating
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a 1-word per card load deck.
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A new deck (deck 21) has been written to defined two new
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O2 instructions (see is_set_loopbox.txt):
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set loopbox O2=800
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tr zero O2=453
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These instructions allows a more general use of index
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loopbox concept (see is_example_1_src.txt)
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Floating point numbers are encoded as
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2300000049 = 0.23
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1000000050 = 1.0
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1500000052 = 150.0
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