README.md formatting cleanup

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Mark Pizzolato 2013-01-27 10:40:35 -08:00
parent 081dd21b25
commit 48aa7a9fb3

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# SIMH v4.0 # SIMH v4.0 - Beta
## WHAT'S NEW ## WHAT'S NEW
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Outgoing connections per line (virtual Null Modem cable). Outgoing connections per line (virtual Null Modem cable).
#### Asynchronous I/O #### Asynchronous I/O
Disk and Tape I/O can be asynchronous. Asynchronous support exists for pdp11_rq, pdp11_rp and pdp11_tq devices (used by VAX and PDP11 simulators). * Disk and Tape I/O can be asynchronous. Asynchronous support exists for pdp11_rq, pdp11_rp and pdp11_tq devices (used by VAX and PDP11 simulators).
Multiplexer I/O (Telnet and/or Serial) can be asynchronous. Asynchronous support exists for console I/O and most multiplexer devices. * Multiplexer I/O (Telnet and/or Serial) can be asynchronous. Asynchronous support exists for console I/O and most multiplexer devices.
#### Disk Extensions #### Disk Extensions
RAW Disk Access (including CDROM) RAW Disk Access (including CDROM)
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A Tokens preceeded and followed by % characters are expanded as environment A Tokens preceeded and followed by % characters are expanded as environment
variables, and if one isn't found then can be one of several special variables, and if one isn't found then can be one of several special
variables: variables:
%DATE% yyyy/mm/dd %DATE% yyyy/mm/dd
%TIME% hh:mm:ss %TIME% hh:mm:ss
%CTIME% Www Mmm dd hh:mm:ss yyyy %CTIME% Www Mmm dd hh:mm:ss yyyy
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%SIM_VERBOSE% The Verify/Verbose mode of the current Do command file %SIM_VERBOSE% The Verify/Verbose mode of the current Do command file
%SIM_QUIET% The Quiet mode of the current Do command file %SIM_QUIET% The Quiet mode of the current Do command file
%SIM_MESSAGE% The message display status of the current Do command file %SIM_MESSAGE% The message display status of the current Do command file
Environment variable lookups are done first with the precise name between Environment variable lookups are done first with the precise name between
the % characters and if that fails, then the name between the % characters the % characters and if that fails, then the name between the % characters
is upcased and a lookup of that valus is attempted. is upcased and a lookup of that valus is attempted.
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it is not found, then the original beginning token on the line is left it is not found, then the original beginning token on the line is left
untouched. untouched.
##### command aliases ##### Command aliases
commands can be aliases with environment variables. For example: commands can be aliases with environment variables. For example:
sim> set env say=echo sim> set env say=echo
sim> say Hello there sim> say Hello there
Hello there Hello there
##### Do command argument manipulation ##### Do command argument manipulation
The SHIFT command will shift the %1 thru %9 arguments to the left one position. The SHIFT command will shift the %1 thru %9 arguments to the left one position.
### Use Prebuilt Windows Simulators ### Use Prebuilt Windows Simulators