[Simh] IBM 650 Simulator Release 2

[Sancho Villa, Roberto]

Hi All

The Release 2 of the IBM 650 computer simulator is available from the Computer History Simulation Project (SIMH) site: https://github.com/simh/simh

This release is focused on Carnegie Internal Translator (IT), included in the in "sw" subdirectory.

It is a real pre-fortran compiler, than can handle expressions and arrays.
Works nicely, source and some ready to run samples are included.
Please check the Section "4 Software Support" and following one on manual (simh\doc\i650_doc.doc) for more details

This is a summary of what's new

o   Hardware support:

§  Half cycle simulation

§  Halt CPU simulation (^E on SimH console)

o   New Software included:

§  Carnegie Internal Translator (IT)

o   New features:

§  Support for displaying SOAP symbolic instructions in debug information

§  CardDeck internal command to split/join/print decks of cards

o   Bugs corrected:

§  Fixed card format handling. Release 1 can only read TEXT format punched cards. Release 2 can read any SimH supported formats BIN, TEXT, BCD, CBN, EBCDIC and OCTAL

§  Removed superfluous line ends from debug strings. Release 1 adds a redundant \r to debug output. Release 2 removes the extra unneeded \r

§  Better minus zero support

§  Fixed unneeded prompt Really truncate memory [N] when setting memory size


Any comments/suggestions are very welcome.

Regards
Roberto



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