TU58EM release v2.0b

// v1.0b - 12 Jul 2005 - donorth - Initial rewrite
// v1.1b - 20 Feb 2006 - donorth - Fixed RT11 f/s init; added XXDP f/s init
// v1.2b - 25 Feb 2006 - donorth - Updated -p arg to be number or string
//                               - Fixed some typos in help string
// v1.3b - 28 Feb 2006 - donorth - Updated windoze serial line config
// v1.4b - 25 May 2006 - donorth - Send INITs on initialization/restart
// v1.4c - 25 Nov 2007 - donorth - Make <INIT><INIT> message be debug, not verbose
//                               - Fix fileseek() to correctly detect LEOF
//                               - read/write no longer skip past LEOF
// v1.4d - 10 Feb 2008 - donorth - added XRSP switch for packet-level handshake
// v1.4e - 16 Feb 2008 - donorth - changed to --long switches from -s
//                               - Slightly updated RT-11 disk init bits
//                               - Added --nosync switch
// v1.4f - 02 Jan 2012 - donorth - Restructuring for ultimate inclusion
//                                 of a tu58 controller implementation
//                                 (ie, to hook to a real tu58 drive or the emulator)
// v1.4g - 30 Oct 2013 - donorth - Removed XRSP switch
// v1.4h - 03 Nov 2013 - donorth - Added packet timing computation in debug mode
// v1.4i - 14 Nov 2013 - donorth - Disabled devtxflush() in wait4cont() routine
//                                 to fix USB output (PC to device) thruput and
//                                 allow 64B USB packets to be used
// v1.4j - 01 Nov 2014 - donorth - Change 'int' to 'long' where possible.
//                                 Only use char/short/long types, not int.
//                                 Fix source for ubuntu linux 12.04 (time structs)
// v1.4k - 11 Jun 2015 - donorth - Integrate Mark Blair's changes for MacOSX compilation
//                               - No functionality changes on other platforms
// v1.4m - 23 Feb 2016 - donorth - Added M. Blair's vax console timeout changes for '730
//                               - Added M. Blair's background mode option (no status).
// v1.4n - 06 Apr 2016 - donorth - Added capability for baud rates >230K, up to 3M
// v1.4o - 09 Jan 2017 - donorth - Removed baud rate 256000, it is nonstandard for unix.
//                                 Changed serial setup to use cfsetispeed()/cfsetospeed()
//                                 Added capability for 1 or 2 stop bits; default is 1
// v1.4p - 05 May 2017 - donorth - Updated serial baud rate table with #ifdef detection
//                                 Update clock_gettime() for MAC OSX support
// v1.4q - 16 May 2017 - donorth - Fixed error in fileseek() routine (should fail at EOF)
// v2.0a - 19 May 2017 - donorth - Rewrite of serial.c to support PARMRK mode on linux
//                                 so that BREAKs are handled correctly via setjmp/longjmp
//                                 Update tu58drive.c to intercept rx byte read routine to
//                                 detect input line BREAK and process as required.
// v2.0b - 03 Apr 2018 - donorth - Change iflags from PARMRK|IGNPAR to PARMRK|INPCK
//                                 Fixes 'short break' issue bobaboba sees during boot on an 11/83

TU58EM release v2.0a

// v1.0b - 12 Jul 2005 - donorth - Initial rewrite
// v1.1b - 20 Feb 2006 - donorth - Fixed RT11 f/s init; added XXDP f/s init
// v1.2b - 25 Feb 2006 - donorth - Updated -p arg to be number or string
//                               - Fixed some typos in help string
// v1.3b - 28 Feb 2006 - donorth - Updated windoze serial line config
// v1.4b - 25 May 2006 - donorth - Send INITs on initialization/restart
// v1.4c - 25 Nov 2007 - donorth - Make <INIT><INIT> message be debug, not verbose
//                               - Fix fileseek() to correctly detect LEOF
//                               - read/write no longer skip past LEOF
// v1.4d - 10 Feb 2008 - donorth - added XRSP switch for packet-level handshake
// v1.4e - 16 Feb 2008 - donorth - changed to --long switches from -s
//                               - Slightly updated RT-11 disk init bits
//                               - Added --nosync switch
// v1.4f - 02 Jan 2012 - donorth - Restructuring for ultimate inclusion
//                                 of a tu58 controller implementation
//                                 (ie, to hook to a real tu58 drive or the emulator)
// v1.4g - 30 Oct 2013 - donorth - Removed XRSP switch
// v1.4h - 03 Nov 2013 - donorth - Added packet timing computation in debug mode
// v1.4i - 14 Nov 2013 - donorth - Disabled devtxflush() in wait4cont() routine
//                                 to fix USB output (PC to device) thruput and
//                                 allow 64B USB packets to be used
// v1.4j - 01 Nov 2014 - donorth - Change 'int' to 'long' where possible.
//                                 Only use char/short/long types, not int.
//                                 Fix source for ubuntu linux 12.04 (time structs)
// v1.4k - 11 Jun 2015 - donorth - Integrate Mark Blair's changes for MacOSX compilation
//                               - No functionality changes on other platforms
// v1.4m - 23 Feb 2016 - donorth - Added M. Blair's vax console timeout changes for '730
//                               - Added M. Blair's background mode option (no status).
// v1.4n - 06 Apr 2016 - donorth - Added capability for baud rates >230K, up to 3M
// v1.4o - 09 Jan 2017 - donorth - Removed baud rate 256000, it is nonstandard for unix.
//                                 Changed serial setup to use cfsetispeed()/cfsetospeed()
//                                 Added capability for 1 or 2 stop bits; default is 1
// v1.4p - 05 May 2017 - donorth - Updated serial baud rate table with #ifdef detection
//                                 Update clock_gettime() for MAC OSX support
// v1.4q - 16 May 2017 - donorth - Fixed error in fileseek() routine (should fail at EOF)
// v2.0a - 19 May 2017 - donorth - Rewrite of serial.c to support PARMRK mode on linux
//                                 so that BREAKs are handled correctly via setjmp/longjmp
//                                 Update tu58drive.c to intercept rx byte read routine to
//                                 detect input line BREAK and process as required.

TU58EM release v1.4p

// v1.0b - 12 Jul 2005 - donorth - Initial rewrite
// v1.1b - 20 Feb 2006 - donorth - Fixed RT11 f/s init; added XXDP f/s init
// v1.2b - 25 Feb 2006 - donorth - Updated -p arg to be number or string
//                               - Fixed some typos in help string
// v1.3b - 28 Feb 2006 - donorth - Updated windoze serial line config
// v1.4b - 25 May 2006 - donorth - Send INITs on initialization/restart
// v1.4c - 25 Nov 2007 - donorth - Make <INIT><INIT> message be debug, not verbose
//                               - Fix fileseek() to correctly detect LEOF
//                               - read/write no longer skip past LEOF
// v1.4d - 10 Feb 2008 - donorth - added XRSP switch for packet-level handshake
// v1.4e - 16 Feb 2008 - donorth - changed to --long switches from -s
//                               - Slightly updated RT-11 disk init bits
//                               - Added --nosync switch
// v1.4f - 02 Jan 2012 - donorth - Restructuring for ultimate inclusion
//                                 of a tu58 controller implementation
//                                 (ie, to hook to a real tu58 drive or the emulator)
// v1.4g - 30 Oct 2013 - donorth - Removed XRSP switch
// v1.4h - 03 Nov 2013 - donorth - Added packet timing computation in debug mode
// v1.4i - 14 Nov 2013 - donorth - Disabled devtxflush() in wait4cont() routine
//                                 to fix USB output (PC to device) thruput and
//                                 allow 64B USB packets to be used
// v1.4j - 01 Nov 2014 - donorth - Change 'int' to 'long' where possible.
//                                 Only use char/short/long types, not int.
//                                 Fix source for ubuntu linux 12.04 (time structs)
// v1.4k - 11 Jun 2015 - donorth - Integrate Mark Blair's changes for MacOSX compilation
//                               - No functionality changes on other platforms
// v1.4m - 23 Feb 2016 - donorth - Added M. Blair's vax console timeout changes for '730
//                               - Added M. Blair's background mode option (no status).
// v1.4n - 06 Apr 2016 - donorth - Added capability for baud rates >230K, up to 3M
// v1.4o - 09 Jan 2017 - donorth - Removed baud rate 256000, it is nonstandard for unix.
//                                 Changed serial setup to use cfsetispeed/cfsetospeed.
//                                 Added capability for 1 or 2 stop bits; default is 1
// v1.4p - 05 May 2017 - donorth - Updated serial baud rate table with #ifdef detection
//                                 Update clock_gettime() for MAC OSX support

TU58EM release v1.4o

// v1.0b - 12 Jul 2005 - donorth - Initial rewrite
// v1.1b - 20 Feb 2006 - donorth - Fixed RT11 f/s init; added XXDP f/s init
// v1.2b - 25 Feb 2006 - donorth - Updated -p arg to be number or string
//                               - Fixed some typos in help string
// v1.3b - 28 Feb 2006 - donorth - Updated windoze serial line config
// v1.4b - 25 May 2006 - donorth - Send INITs on initialization/restart
// v1.4c - 25 Nov 2007 - donorth - Make <INIT><INIT> message be debug, not verbose
//                               - Fix fileseek() to correctly detect LEOF
//                               - read/write no longer skip past LEOF
// v1.4d - 10 Feb 2008 - donorth - added XRSP switch for packet-level handshake
// v1.4e - 16 Feb 2008 - donorth - changed to --long switches from -s
//                               - Slightly updated RT-11 disk init bits
//                               - Added --nosync switch
// v1.4f - 02 Jan 2012 - donorth - Restructuring for ultimate inclusion
//                                 of a tu58 controller implementation
//                                 (ie, to hook to a real tu58 drive or the emulator)
// v1.4g - 30 Oct 2013 - donorth - Removed XRSP switch
// v1.4h - 03 Nov 2013 - donorth - Added packet timing computation in debug mode
// v1.4i - 14 Nov 2013 - donorth - Disabled devtxflush() in wait4cont() routine
//                                 to fix USB output (PC to device) thruput and
//                                 allow 64B USB packets to be used
// v1.4j - 01 Nov 2014 - donorth - Change 'int' to 'long' where possible.
//                                 Only use char/short/long types, not int.
//                                 Fix source for ubuntu linux 12.04 (time structs)
// v1.4k - 11 Jun 2015 - donorth - Integrate Mark Blair's changes for MacOSX compilation
//                               - No functionality changes on other platforms
// v1.4m - 23 Feb 2016 - donorth - Added M. Blair's vax console timeout changes for '730
//                               - Added M. Blair's background mode option (no status).
// v1.4n - 06 Apr 2016 - donorth - Added capability for baud rates >230K, up to 3M
// v1.4o - 09 Jan 2017 - donorth - Removed baud rate 256000, it is nonstandard for unix
//                                 Changed serial setup to use cfsetispeed()/cfsetospeed()
//                                 Added capability for 1 or 2 stop bits; default is 1

TU58EM release v1.4n

// v1.0b - 12 Jul 2005 - donorth - Initial rewrite
// v1.1b - 20 Feb 2006 - donorth - Fixed RT11 f/s init; added XXDP f/s init
// v1.2b - 25 Feb 2006 - donorth - Updated -p arg to be number or string
//                               - Fixed some typos in help string
// v1.3b - 28 Feb 2006 - donorth - Updated windoze serial line config
// v1.4b - 25 May 2006 - donorth - Send INITs on initialization/restart
// v1.4c - 25 Nov 2007 - donorth - Make <INIT><INIT> message be debug, not verbose
//                               - Fix fileseek() to correctly detect LEOF
//                               - read/write no longer skip past LEOF
// v1.4d - 10 Feb 2008 - donorth - added XRSP switch for packet-level handshake
// v1.4e - 16 Feb 2008 - donorth - changed to --long switches from -s
//                               - Slightly updated RT-11 disk init bits
//                               - Added --nosync switch
// v1.4f - 02 Jan 2012 - donorth - Restructuring for ultimate inclusion
//                                 of a tu58 controller implementation
//                                 (ie, to hook to a real tu58 drive or the emulator)
// v1.4g - 30 Oct 2013 - donorth - Removed XRSP switch
// v1.4h - 03 Nov 2013 - donorth - Added packet timing computation in debug mode
// v1.4i - 14 Nov 2013 - donorth - Disabled devtxflush() in wait4cont() routine
//                                 to fix USB output (PC to device) thruput and
//                                 allow 64B USB packets to be used
// v1.4j - 01 Nov 2014 - donorth - Change 'int' to 'long' where possible.
//                                 Only use char/short/long types, not int.
//                                 Fix source for ubuntu linux 12.04 (time structs)
// v1.4k - 11 Jun 2015 - donorth - Integrate Mark Blair's changes for MacOSX compilation
//                               - No functionality changes on other platforms
// v1.4m - 23 Feb 2016 - donorth - Added M. Blair's vax console timeout changes for '730
//                               - Added M. Blair's background mode option (no status).
// v1.4n - 06 Apr 2016 - donorth - Added capability for baud rates >230K, up to 3M

TU58EM release v1.4m

// v1.0b - 12 Jul 2005 - donorth - Initial rewrite
// v1.1b - 20 Feb 2006 - donorth - Fixed RT11 f/s init; added XXDP f/s init
// v1.2b - 25 Feb 2006 - donorth - Updated -p arg to be number or string
//                               - Fixed some typos in help string
// v1.3b - 28 Feb 2006 - donorth - Updated windoze serial line config
// v1.4b - 25 May 2006 - donorth - Send INITs on initialization/restart
// v1.4c - 25 Nov 2007 - donorth - Make <INIT><INIT> message be debug, not verbose
//                               - Fix fileseek() to correctly detect LEOF
//                               - read/write no longer skip past LEOF
// v1.4d - 10 Feb 2008 - donorth - added XRSP switch for packet-level handshake
// v1.4e - 16 Feb 2008 - donorth - changed to --long switches from -s
//                               - Slightly updated RT-11 disk init bits
//                               - Added --nosync switch
// v1.4f - 02 Jan 2012 - donorth - Restructuring for ultimate inclusion
//                                 of a tu58 controller implementation
//                                 (ie, to hook to a real tu58 drive or the emulator)
// v1.4g - 30 Oct 2013 - donorth - Removed XRSP switch
// v1.4h - 03 Nov 2013 - donorth - Added packet timing computation in debug mode
// v1.4i - 14 Nov 2013 - donorth - Disabled devtxflush() in wait4cont() routine
//                                 to fix USB output (PC to device) thruput and
//                                 allow 64B USB packets to be used
// v1.4j - 01 Nov 2014 - donorth - Change 'int' to 'long' where possible.
//                                 Only use char/short/long types, not int.
//                                 Fix source for ubuntu linux 12.04 (time structs)
// v1.4k - 11 Jun 2015 - donorth - Integrate Mark Blair's changes for MacOSX compilation
//                               - No functionality changes on other platforms
// v1.4m - 23 Feb 2016 - donorth - Added M. Blair's vax console timeout changes for '730
//                               - Added M. Blair's background mode option (no status).

TU58EM release v1.4k

// v1.0b - 12 Jul 2005 - donorth - Initial rewrite
// v1.1b - 20 Feb 2006 - donorth - Fixed RT11 f/s init; added XXDP f/s init
// v1.2b - 25 Feb 2006 - donorth - Updated -p arg to be number or string
//                               - Fixed some typos in help string
// v1.3b - 28 Feb 2006 - donorth - Updated windoze serial line config
// v1.4b - 25 May 2006 - donorth - Send INITs on initialization/restart
// v1.4c - 25 Nov 2007 - donorth - Make <INIT><INIT> message be debug, not verbose
//                               - Fix fileseek() to correctly detect LEOF
//                               - read/write no longer skip past LEOF
// v1.4d - 10 Feb 2008 - donorth - added XRSP switch for packet-level handshake
// v1.4e - 16 Feb 2008 - donorth - changed to --long switches from -s
//                               - Slightly updated RT-11 disk init bits
//                               - Added --nosync switch
// v1.4f - 02 Jan 2012 - donorth - Restructuring for ultimate inclusion
//                                 of a tu58 controller implementation
//                                 (ie, to hook to a real tu58 drive or the emulator)
// v1.4g - 30 Oct 2013 - donorth - Removed XRSP switch
// v1.4h - 03 Nov 2013 - donorth - Added packet timing computation in debug mode
// v1.4i - 14 Nov 2013 - donorth - Disabled devtxflush() in wait4cont() routine
//                                 to fix USB output (PC to device) thruput and
//                                 allow 64B USB packets to be used
// v1.4j - 01 Nov 2014 - donorth - Change 'int' to 'long' where possible.
//                                 Only use char/short/long types, not int.
//                                 Fix source for ubuntu linux 12.04 (time structs)
// v1.4k - 11 Jun 2015 - donorth - Integrate Mark Blair's changes for MacOSX compilation
//                               - No functionality changes on other platforms

TU58EM release v1.4j

Release history:

// v1.0b - 12 Jul 2005 - donorth - Initial rewrite
// v1.1b - 20 Feb 2006 - donorth - Fixed RT11 f/s init; added XXDP f/s init
// v1.2b - 25 Feb 2006 - donorth - Updated -p arg to be number or string
//                               - Fixed some typos in help string
// v1.3b - 28 Feb 2006 - donorth - Updated windoze serial line config
// v1.4b - 25 May 2006 - donorth - Send INITs on initialization/restart
// v1.4c - 25 Nov 2007 - donorth - Make <INIT><INIT> message be debug, not verbose
//                               - Fix fileseek() to correctly detect LEOF
//                               - read/write no longer skip past LEOF
// v1.4d - 10 Feb 2008 - donorth - added XRSP switch for packet-level handshake
// v1.4e - 16 Feb 2008 - donorth - changed to --long switches from -s
//                               - Slightly updated RT-11 disk init bits
//                               - Added --nosync switch
// v1.4f - 02 Jan 2012 - donorth - Restructuring for ultimate inclusion
//                                 of a tu58 controller implementation
//                                 (ie, to hook to a real tu58 drive or the emulator)
// v1.4g - 30 Oct 2013 - donorth - Removed XRSP switch
// v1.4h - 03 Nov 2013 - donorth - Added packet timing computation in debug mode
// v1.4i - 14 Nov 2013 - donorth - Disabled devtxflush() in wait4cont() routine
//                                 to fix USB output (PC to device) thruput and
//                                 allow 64B USB packets to be used
// v1.4j - 01 Nov 2014 - donorth - Change 'int' to 'long' where possible.
//                                 Only use char/short/long types, not int.
//                                 Fix source for ubuntu linux 12.04 (time structs)