Running an LSI-11 from UNIX V6 - Revision history

Jnc: rm bloat

2023-07-02T16:25:23Z

rm bloat

← Older revision		Revision as of 16:25, 2 July 2023
Line 31:		Line 31:
	*[http://ana-3.lcs.mit.edu/~jnc/tech/unix/sys/dl.c dl.c]		*[http://ana-3.lcs.mit.edu/~jnc/tech/unix/sys/dl.c dl.c]
	*[http://ana-3.lcs.mit.edu/~jnc/tech/unix/ttytalk.c ttytalk.c]		*[http://ana-3.lcs.mit.edu/~jnc/tech/unix/ttytalk.c ttytalk.c]

	~~{{PDP-11}}~~

	[[Category: UNIX Practical Guides‎]]		[[Category: UNIX Practical Guides‎]]

Jnc: Jnc moved page Running an LSI-11 from Unix V6 to Running an LSI-11 from UNIX V6: Consistent caps

2021-03-10T16:49:14Z

Jnc moved page Running an LSI-11 from Unix V6 to Running an LSI-11 from UNIX V6: Consistent caps

← Older revision		Revision as of 16:49, 10 March 2021
(No difference)

Jnc: ,imor copyedit

2020-09-19T15:23:31Z

,imor copyedit

← Older revision		Revision as of 15:23, 19 September 2020
Line 3:		Line 3:
	If one connects the LSI-11's [[asynchronous serial line]] console to a serial line on the Unix V6 machine (either real or simulated), a program ('ttytalk', see below) exists to allow a user logged into the Unix machine to talk to the console, load programs into it, etc.		If one connects the LSI-11's [[asynchronous serial line]] console to a serial line on the Unix V6 machine (either real or simulated), a program ('ttytalk', see below) exists to allow a user logged into the Unix machine to talk to the console, load programs into it, etc.

	One issue with doing so on Unix 'vanilla' V6 is that it insists on sending a [[parity]] bit on all output characters to a serial line, and there is no way to disable that. Also, the user-called top end of the serial line [[device driver]] output code inserts bytes with the high bit set into the output queue, to indicate the inter-character delays ~~which~~ some (e.g. 'carriage return') ~~needed after some characters~~ to support the [[printing terminal]]s of the day. Finally, probably to support all the above, it explicitly does not allow 8-bit output on serial lines; this capability is needed to load binary files into the LSI-11. Several small change to the shared serial line driver, dmr/tty.c, fix these issues.		One issue with doing so on Unix 'vanilla' V6 is that it insists on sending a [[parity]] bit on all output characters to a serial line, and there is no way to disable that. Also, the user-called top end of the serial line [[device driver]] output code inserts bytes with the high bit set into the output queue, to indicate the inter-character delays needed after some characters (e.g. 'carriage return') to support many of the [[printing terminal]]s of the day. Finally, probably to support all the above, it explicitly does not allow 8-bit output on serial lines; this capability is needed to load binary files into the LSI-11. Several small change to the shared serial line driver, dmr/tty.c, fix these issues.

	Since the mode word in stty/gtty is already full, one has to extend the device interface to support setting and clearing 8-bit output support. One can either add ioctl() or do an upward-compatible extension to stty/gtty (see external link below); the code below takes the latter tack.		Since the mode word in stty/gtty is already full, one has to extend the device interface to support setting and clearing 8-bit output support. One can either add ioctl() or do an upward-compatible extension to stty/gtty (see external link below); the code below takes the latter tack.

Jnc: /* External links */ reloc

2020-09-15T16:00:26Z

External links: reloc

← Older revision		Revision as of 16:00, 15 September 2020
Line 26:		Line 26:
	==External links==		==External links==

	*[http://~~www~~.~~chiappa~~.~~net~~/~jnc/tech/newtty.txt Extended TTY Modes, and User Interface]		*[http://ana-3.lcs.mit.edu/~jnc/tech/unix/newtty.txt Extended TTY Modes, and User Interface]
	*[http://ana-3.lcs.mit.edu/~jnc/tech/unix/sys/tty.h tty.h]		*[http://ana-3.lcs.mit.edu/~jnc/tech/unix/sys/tty.h tty.h]
	*[http://ana-3.lcs.mit.edu/~jnc/tech/unix/sys/tty.c tty.c]		*[http://ana-3.lcs.mit.edu/~jnc/tech/unix/sys/tty.c tty.c]

Jnc: /* External links */ +tty.h; relocate

2020-09-15T13:35:01Z

External links: +tty.h; relocate

← Older revision		Revision as of 13:35, 15 September 2020
Line 27:		Line 27:

	*[http://www.chiappa.net/~jnc/tech/newtty.txt Extended TTY Modes, and User Interface]		*[http://www.chiappa.net/~jnc/tech/newtty.txt Extended TTY Modes, and User Interface]
	*[http://ana-3.lcs.mit.edu/~jnc/tech/unix/tty.c tty.c]		*[http://ana-3.lcs.mit.edu/~jnc/tech/unix/sys/tty.h tty.h]
	*[http://ana-3.lcs.mit.edu/~jnc/tech/unix/dl.c dl.c]		*[http://ana-3.lcs.mit.edu/~jnc/tech/unix/sys/tty.c tty.c]
			*[http://ana-3.lcs.mit.edu/~jnc/tech/unix/sys/dl.c dl.c]
	*[http://ana-3.lcs.mit.edu/~jnc/tech/unix/ttytalk.c ttytalk.c]		*[http://ana-3.lcs.mit.edu/~jnc/tech/unix/ttytalk.c ttytalk.c]

Jnc: + output delay codes

2020-09-14T11:50:15Z

+ output delay codes

← Older revision		Revision as of 11:50, 14 September 2020
Line 1:		Line 1:
	It is relatively easy to run a hardware [[LSI-11]] (or [[PDP-11/23]], [[PDP-11/73]], etc, although this article will use the term 'LSI-11') from a [[PDP-11]] (either real or simulated) running [[UNIX Sixth Edition\|Unix V6]].		It is relatively easy to run a hardware [[LSI-11]] (or [[PDP-11/23]], [[PDP-11/73]], etc, although this article will use the term 'LSI-11' for all of them) from a [[PDP-11]] (either real or simulated) running [[UNIX Sixth Edition\|Unix V6]].

	If one connects the LSI-11's [[asynchronous serial line]] console to a serial line on the Unix V6 machine (either real or simulated), a program ('ttytalk', see below) exists to allow a user logged into the Unix machine to talk to the console, load programs into it, etc.		If one connects the LSI-11's [[asynchronous serial line]] console to a serial line on the Unix V6 machine (either real or simulated), a program ('ttytalk', see below) exists to allow a user logged into the Unix machine to talk to the console, load programs into it, etc.

	One issue ~~is that~~ Unix 'vanilla' V6 insists on sending a [[parity]] bit on all output characters to a serial line, and there is no way to disable that. Also, it does not allow 8-bit output on serial lines; this capability is needed to load binary files into the LSI-11. A small change to the shared serial line driver, dmr/tty.c, ~~fixes~~ these issues.		One issue with doing so on Unix 'vanilla' V6 is that it insists on sending a [[parity]] bit on all output characters to a serial line, and there is no way to disable that. Also, the user-called top end of the serial line [[device driver]] output code inserts bytes with the high bit set into the output queue, to indicate the inter-character delays which some (e.g. 'carriage return') needed after some characters to support the [[printing terminal]]s of the day. Finally, probably to support all the above, it explicitly does not allow 8-bit output on serial lines; this capability is needed to load binary files into the LSI-11. Several small change to the shared serial line driver, dmr/tty.c, fix these issues.

	Since the mode word in stty/gtty is already full, one has to extend the device interface to support setting and clearing 8-bit output support. One can either add ioctl() or do an upward-compatible extension to stty/gtty (see external link below); the code below takes the latter tack.		Since the mode word in stty/gtty is already full, one has to extend the device interface to support setting and clearing 8-bit output support. One can either add ioctl() or do an upward-compatible extension to stty/gtty (see external link below); the code below takes the latter tack.

Jnc: + parity on output

2020-09-14T03:04:29Z

+ parity on output

← Older revision		Revision as of 03:04, 14 September 2020
Line 3:		Line 3:
	If one connects the LSI-11's [[asynchronous serial line]] console to a serial line on the Unix V6 machine (either real or simulated), a program ('ttytalk', see below) exists to allow a user logged into the Unix machine to talk to the console, load programs into it, etc.		If one connects the LSI-11's [[asynchronous serial line]] console to a serial line on the Unix V6 machine (either real or simulated), a program ('ttytalk', see below) exists to allow a user logged into the Unix machine to talk to the console, load programs into it, etc.

	One issue is that Unix V6 does not allow 8-bit output on serial lines; this capability is needed to load binary files into the LSI-11. A small change to the shared serial line driver, dmr/tty.c, ~~allows this~~.		One issue is that Unix 'vanilla' V6 insists on sending a [[parity]] bit on all output characters to a serial line, and there is no way to disable that. Also, it does not allow 8-bit output on serial lines; this capability is needed to load binary files into the LSI-11. A small change to the shared serial line driver, dmr/tty.c, fixes these issues.

	Since the mode word in stty/gtty is already full, one has to extend the device interface to support setting and clearing 8-bit output support. One can either add ioctl() or do an upward-compatible extension to stty/gtty (see external link below); the code below takes the latter tack.		Since the mode word in stty/gtty is already full, one has to extend the device interface to support setting and clearing 8-bit output support. One can either add ioctl() or do an upward-compatible extension to stty/gtty (see external link below); the code below takes the latter tack.

	The same interface is used to send a BREAK down the serial line to the console (used to halt the machine, e.g. when it is in a tight loop).		The same interface is used to send a BREAK down the serial line to the LSI-11's console (used to halt the machine, e.g. when it is in a tight loop).

	The current code is somewhat inelegant, since the generic code to recognize the extended interface is currently in the serial line driver (dl.c), and not in the stty() system call code (since moving it there would mean adding entries in cdevsw[], and it was desired to minimize the number of modules that were changed).		The current code is somewhat inelegant, since the generic code to recognize the extended interface is currently in the serial line driver (dl.c), and not in the stty() system call code (since moving it there would mean adding entries in cdevsw[], and it was desired to minimize the number of modules that were changed).

Jnc: +See also

2019-03-03T01:47:23Z

+See also

← Older revision		Revision as of 01:47, 3 March 2019
Line 10:		Line 10:

	The current code is somewhat inelegant, since the generic code to recognize the extended interface is currently in the serial line driver (dl.c), and not in the stty() system call code (since moving it there would mean adding entries in cdevsw[], and it was desired to minimize the number of modules that were changed).		The current code is somewhat inelegant, since the generic code to recognize the extended interface is currently in the serial line driver (dl.c), and not in the stty() system call code (since moving it there would mean adding entries in cdevsw[], and it was desired to minimize the number of modules that were changed).

			==See also==

			* [[UNIX V6 internals]]
			* [[Unix V6 kernel memory layout]]
			** [[Unix V6 dump analysis]]
			* [[Installing UNIX Sixth Edition]]
			** [[Setting up UNIX Sixth Edition]]
			** [[Upgrading UNIX Sixth Edition]]
			** [[Running UNIX V6 on an -11/23]]
			* [[Installing Unix v6 (PDP-11) on SIMH]]
			** [[Running Unix v6 in SIMH]]
			* [[Installing UNIX Sixth Edition on Ersatz-11]]

	==External links==		==External links==

Jnc: +cat

2018-12-14T13:51:47Z

+cat

← Older revision		Revision as of 13:51, 14 December 2018
Line 1:		Line 1:
	It is relatively easy to run a hardware [[LSI-11]] (or [[PDP-11/23]], [[PDP-11/73]], etc, although this article will use the term 'LSI-11') from a PDP-11 (either real or simulated) running Unix V6.		It is relatively easy to run a hardware [[LSI-11]] (or [[PDP-11/23]], [[PDP-11/73]], etc, although this article will use the term 'LSI-11') from a [[PDP-11]] (either real or simulated) running [[UNIX Sixth Edition\|Unix V6]].

	If one connects the LSI-11's serial line console to a serial line on the Unix V6 machine (either real or simulated), a program ('ttytalk', see below) exists to allow a user logged into the Unix machine to talk to the console, load programs into it, etc.		If one connects the LSI-11's [[asynchronous serial line]] console to a serial line on the Unix V6 machine (either real or simulated), a program ('ttytalk', see below) exists to allow a user logged into the Unix machine to talk to the console, load programs into it, etc.

	One issue is that Unix V6 does not allow 8-bit output on serial lines; this capability is needed to load binary files into the LSI-11. A small change to the shared serial line driver, dmr/tty.c, allows this.		One issue is that Unix V6 does not allow 8-bit output on serial lines; this capability is needed to load binary files into the LSI-11. A small change to the shared serial line driver, dmr/tty.c, allows this.
Line 19:		Line 19:

	{{PDP-11}}		{{PDP-11}}

			[[Category: UNIX Practical Guides‎]]

Jnc: add missing detail/code

2016-12-23T00:17:33Z

add missing detail/code

← Older revision		Revision as of 00:17, 23 December 2016
Line 5:		Line 5:
	One issue is that Unix V6 does not allow 8-bit output on serial lines; this capability is needed to load binary files into the LSI-11. A small change to the shared serial line driver, dmr/tty.c, allows this.		One issue is that Unix V6 does not allow 8-bit output on serial lines; this capability is needed to load binary files into the LSI-11. A small change to the shared serial line driver, dmr/tty.c, allows this.

	Since the mode word in stty/gtty is already full, one has to extend the device interface to support setting and clearing 8-bit output support. One can either add ioctl() or do an upward-compatible extension to stty/gtty (see external link below).		Since the mode word in stty/gtty is already full, one has to extend the device interface to support setting and clearing 8-bit output support. One can either add ioctl() or do an upward-compatible extension to stty/gtty (see external link below); the code below takes the latter tack.

	The same interface is used to send a BREAK down the serial line to the console (used to halt the machine, e.g. when it is in a tight loop).		The same interface is used to send a BREAK down the serial line to the console (used to halt the machine, e.g. when it is in a tight loop).

			The current code is somewhat inelegant, since the generic code to recognize the extended interface is currently in the serial line driver (dl.c), and not in the stty() system call code (since moving it there would mean adding entries in cdevsw[], and it was desired to minimize the number of modules that were changed).

	==External links==		==External links==
Line 13:		Line 15:
	*[http://www.chiappa.net/~jnc/tech/newtty.txt Extended TTY Modes, and User Interface]		*[http://www.chiappa.net/~jnc/tech/newtty.txt Extended TTY Modes, and User Interface]
	*[http://ana-3.lcs.mit.edu/~jnc/tech/unix/tty.c tty.c]		*[http://ana-3.lcs.mit.edu/~jnc/tech/unix/tty.c tty.c]
			*[http://ana-3.lcs.mit.edu/~jnc/tech/unix/dl.c dl.c]
	*[http://ana-3.lcs.mit.edu/~jnc/tech/unix/ttytalk.c ttytalk.c]		*[http://ana-3.lcs.mit.edu/~jnc/tech/unix/ttytalk.c ttytalk.c]

	{{PDP-11}}		{{PDP-11}}