SITS tutorial - Revision history

Larsbrinkhoff: /* Logging in */ DO IT, LOGO.

2022-11-03T06:16:20Z

‎Logging in: DO IT, LOGO.

Larsbrinkhoff: /* DDT */ Remove some extra garbage.

2022-10-31T15:59:10Z

‎DDT: Remove some extra garbage.

Larsbrinkhoff: SITS tutorial.

2022-10-28T13:13:14Z

SITS tutorial.

New page

==Logging in==

On a TV keyboard, press ESC. On a teletype or 2500, type ^Z to get the LOGIN: prompt.

If the system doesn't have any users, type enter to bypass login and go to the SYSSPR # prompt. From there you can start DDT.

==System Sphere==

These are the System Sphere commands:

<pre>
?
CO
CONTINUE
D
DDT
GUN
HELP
KILL
L
LO
LOAD
LOGO
LOGOUT
GOODBYE
ONLINE
PEEK
PERMIT
RS
RSTART
SEND
SYSKILL
SYSSPR
</pre>

==File System==

Unlike [[Incompatible Timesharing System|ITS]], the file system is fully hierarchical and names can be any length.

Each disk pack has its own root directory, i.e. <code>0;</code> for disk 0. Paths consists of names separated by whitespaces. If the root directory is included, it's an absolute path; otherwise it's relative.

To list files, use the DDT command <code>:LISTF</code>. To navigate the file system, use <code>:SETD</code> to set the current directory.

==DDT==

These are the DDT commands:

<pre>
PUNCH
SYMADD
NEWSPH
LISTF
DELETE
PRINT
YANK
PDUMP
LOAD
BINLOAD
SSTAT
FONT
CAPMODE
MAPMODE
SYSMODE
CLEARSCREEN
REVERSE
ISPACE
?
SETD
LOGOUT
DSPACE
COPY
ERROR
LSI
SITS
*:LOGOUT
BYE
</pre>

==Switches==

Some of the console data switches have functions:

{| class="wikitable"
! Switch
! Sensed by
! Usage
|-
| 15 || SITS || Go to RUG.
|-
| 14 || SITS || Page fault breakpoint.
|-
| 13 || SITS || Stop/start.
|-
| 3 || SYSSPR || System being debugged.
|-
| 2 || SYSSPR || Allow SYSKILL.
|-
| 0 || SITS || Ignore switches.
|}

==Shutting down==

Shutting down must be done from TTY 0, and switch 2 must be up.

Get to DDT and type ^Z to go to the SYSSPR command line. Type SYSKILL to shut down. SITS will exit to RUG.

[[Category: SIMH Tutorials]]

@@ Line 3: / Line 3: @@
 ==Logging in==
-On a TV keyboard, press ESC.  On a teletype or 2500, type ^Z to get the LOGIN: prompt.
+On a TV keyboard, press ESC (labelled "DO IT" on the original keyboards).  On a teletype or 2500, type ^Z to get the LOGIN: prompt.
-If the system doesn't have any users, type enter to bypass login and go to the SYSSPR # prompt.  From there you can start DDT.
+If the system doesn't have any users, type enter to bypass login and go to the SYSSPR # prompt.  From there you can start DDT or LOGO.
 ==System Sphere==

@@ Line 75: / Line 75: @@
 LSI
 SITS
 </pre>