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
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Outgoing connections per line (virtual Null Modem cable).
#### 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).
Multiplexer I/O (Telnet and/or Serial) can be asynchronous. Asynchronous support exists for console I/O and most multiplexer devices.
* 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.
#### Disk Extensions
RAW Disk Access (including CDROM)
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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:
%DATE% yyyy/mm/dd
%TIME% hh:mm:ss
%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_QUIET% The Quiet mode 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
the % characters and if that fails, then the name between the % characters
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
untouched.
##### command aliases
##### Command aliases
commands can be aliases with environment variables. For example:
sim> set env say=echo
sim> say Hello there
Hello there
##### 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