2bcd1e7c4c
1. New Features in 2.10-2
The build procedures have changed. There is only one UNIX makefile.
To compile without Ethernet support, simply type
gmake {target|all}
To compile with Ethernet support, type
gmake USE_NETWORK=1 {target|all}
The Mingw batch files require Mingw release 2 and invoke the Unix
makefile. There are still separate batch files for compilation
with or without Ethernet support.
1.1 SCP and Libraries
- The EVAL command will evaluate a symbolic type-in and display
it in numeric form.
- The ! command (with no arguments) will launch the host operating
system command shell. The ! command (with an argument) executes
the argument as a host operating system command. (Code from
Mark Pizzolato)
- Telnet sessions now recognize BREAK. How a BREAK is transmitted
dependent on the particular Telnet client. (Code from Mark
Pizzolato)
- The sockets library includes code for active connections as
well as listening connections.
- The RESTORE command will restore saved memory size, if the
simulator supports dynamic memory resizing.
1.2 PDP-1
- The PDP-1 supports the Type 24 serial drum (based on recently
discovered documents).
1.3 18b PDP's
- The PDP-4 supports the Type 24 serial drum (based on recently
discovered documents).
1.4 PDP-11
- The PDP-11 implements a stub DEUNA/DELUA (XU). The real XU
module will be included in a later release.
1.5 PDP-10
- The PDP-10 implements a stub DEUNA/DELUA (XU). The real XU
module will be included in a later release.
1.6 HP 2100
- The IOP microinstruction set is supported for the 21MX as well
as the 2100.
- The HP2100 supports the Access Interprocessor Link (IPL).
1.7 VAX
- If the VAX console is attached to a Telnet session, BREAK is
interpreted as console halt.
- The SET/SHOW HISTORY commands enable and display a history of
the most recently executed instructions. (Code from Mark
Pizzolato)
1.8 Terminals Multiplexors
- BREAK detection was added to the HP, DEC, and Interdata terminal
multiplexors.
1.9 Interdata 16b and 32b
- First release. UNIX is not yet working.
1.10 SDS 940
- First release.
2. Bugs Fixed in 2.10-2
- PDP-11 console must default to 7b for early UNIX compatibility.
- PDP-11/VAX TMSCP emulator was using the wrong packet length for
read/write end packets.
- Telnet IAC+IAC processing was fixed, both for input and output
(found by Mark Pizzolato).
- PDP-11/VAX Ethernet setting flag bits wrong for chained
descriptors (found by Mark Pizzolato).
3. New Features in 2.10 vs prior releases
3.1 SCP and Libraries
- The VT emulation package has been replaced by the capability
to remote the console to a Telnet session. Telnet clients
typically have more complete and robust VT100 emulation.
- Simulated devices may now have statically allocated buffers,
in addition to dynamically allocated buffers or disk-based
data stores.
- The DO command now takes substitutable arguments (max 9).
In command files, %n represents substitutable argument n.
- The initial command line is now interpreted as the command
name and substitutable arguments for a DO command. This is
backward compatible to prior versions.
- The initial command line parses switches. -Q is interpreted
as quiet mode; informational messages are suppressed.
- The HELP command now takes an optional argument. HELP <cmd>
types help on the specified command.
- Hooks have been added for implementing GUI-based consoles,
as well as simulator-specific command extensions. A few
internal data structures and definitions have changed.
- Two new routines (tmxr_open_master, tmxr_close_master) have
been added to sim_tmxr.c. The calling sequence for
sim_accept_conn has been changed in sim_sock.c.
- The calling sequence for the VM boot routine has been modified
to add an additional parameter.
- SAVE now saves, and GET now restores, controller and unit flags.
- Library sim_ether.c has been added for Ethernet support.
3.2 VAX
- Non-volatile RAM (NVR) can behave either like a memory or like
a disk-based peripheral. If unattached, it behaves like memory
and is saved and restored by SAVE and RESTORE, respectively.
If attached, its contents are loaded from disk by ATTACH and
written back to disk at DETACH and EXIT.
- SHOW <device> VECTOR displays the device's interrupt vector.
A few devices allow the vector to be changed with SET
<device> VECTOR=nnn.
- SHOW CPU IOSPACE displays the I/O space address map.
- The TK50 (TMSCP tape) has been added.
- The DEQNA/DELQA (Qbus Ethernet controllers) have been added.
- Autoconfiguration support has been added.
- The paper tape reader has been removed from vax_stddev.c and
now references a common implementation file, dec_pt.h.
- Examine and deposit switches now work on all devices, not just
the CPU.
- Device address conflicts are not detected until simulation starts.
3.3 PDP-11
- SHOW <device> VECTOR displays the device's interrupt vector.
Most devices allow the vector to be changed with SET
<device> VECTOR=nnn.
- SHOW CPU IOSPACE displays the I/O space address map.
- The TK50 (TMSCP tape), RK611/RK06/RK07 (cartridge disk),
RX211 (double density floppy), and KW11P programmable clock
have been added.
- The DEQNA/DELQA (Qbus Ethernet controllers) have been added.
- Autoconfiguration support has been added.
- The paper tape reader has been removed from pdp11_stddev.c and
now references a common implementation file, dec_pt.h.
- Device bootstraps now use the actual CSR specified by the
SET ADDRESS command, rather than just the default CSR. Note
that PDP-11 operating systems may NOT support booting with
non-standard addresses.
- Specifying more than 256KB of memory, or changing the bus
configuration, causes all peripherals that are not compatible
with the current bus configuration to be disabled.
- Device address conflicts are not detected until simulation starts.
3.4 PDP-10
- SHOW <device> VECTOR displays the device's interrupt vector.
A few devices allow the vector to be changed with SET
<device> VECTOR=nnn.
- SHOW CPU IOSPACE displays the I/O space address map.
- The RX211 (double density floppy) has been added; it is off
by default.
- The paper tape now references a common implementation file,
dec_pt.h.
- Device address conflicts are not detected until simulation starts.
3.5 PDP-1
- DECtape (then known as MicroTape) support has been added.
- The line printer and DECtape can be disabled and enabled.
3.6 PDP-8
- The RX28 (double density floppy) has been added as an option to
the existing RX8E controller.
- SHOW <device> DEVNO displays the device's device number. Most
devices allow the device number to be changed with SET <device>
DEVNO=nnn.
- Device number conflicts are not detected until simulation starts.
3.7 IBM 1620
- The IBM 1620 simulator has been released.
3.8 AltairZ80
- A hard drive has been added for increased storage.
- Several bugs have been fixed.
3.9 HP 2100
- The 12845A has been added and made the default line printer (LPT).
The 12653A has been renamed LPS and is off by default. It also
supports the diagnostic functions needed to run the DCPC and DMS
diagnostics.
- The 12557A/13210A disk defaults to the 13210A (7900/7901).
- The 12559A magtape is off by default.
- New CPU options (EAU/NOEAU) enable/disable the extended arithmetic
instructions for the 2116. These instructions are standard on
the 2100 and 21MX.
- New CPU options (MPR/NOMPR) enable/disable memory protect for the
2100 and 21MX.
- New CPU options (DMS/NODMS) enable/disable the dynamic mapping
instructions for the 21MX.
- The 12539 timebase generator autocalibrates.
3.10 Simulated Magtapes
- Simulated magtapes recognize end of file and the marker
0xFFFFFFFF as end of medium. Only the TMSCP tape simulator
can generate an end of medium marker.
- The error handling in simulated magtapes was overhauled to be
consistent through all simulators.
3.11 Simulated DECtapes
- Added support for RT11 image file format (256 x 16b) to DECtapes.
4. Bugs Fixed in 2.10 vs prior releases
- TS11/TSV05 was not simulating the XS0_MOT bit, causing failures
under VMS. In addition, two of the CTL options were coded
interchanged.
- IBM 1401 tape was not setting a word mark under group mark for
load mode reads. This caused the diagnostics to crash.
- SCP bugs in ssh_break and set_logon were fixed (found by Dave
Hittner).
- Numerous bugs in the HP 2100 extended arithmetic, floating point,
21MX, DMS, and IOP instructions were fixed. Bugs were also fixed
in the memory protect and DMS functions. The moving head disks
(DP, DQ) were revised to simulate the hardware more accurately.
Missing functions in DQ (address skip, read address) were added.
- PDP-10 tape wouldn't boot, and then wouldn't read (reported by
Michael Thompson and Harris Newman, respectively)
- PDP-1 typewriter is half duplex, with only one shift state for
both input and output (found by Derek Peschel)
5. General Notes
WARNING: V2.10 has reorganized and renamed some of the definition
files for the PDP-10, PDP-11, and VAX. Be sure to delete all
previous source files before you unpack the Zip archive, or
unpack it into a new directory structure.
WARNING: V2.10 has a new, more comprehensive save file format.
Restoring save files from previous releases will cause 'invalid
register' errors and loss of CPU option flags, device enable/
disable flags, unit online/offline flags, and unit writelock
flags.
WARNING: If you are using Visual Studio .NET through the IDE,
be sure to turn off the /Wp64 flag in the project settings, or
dozens of spurious errors will be generated.
WARNING: Compiling Ethernet support under Windows requires
extra steps; see the Ethernet readme file. Ethernet support is
currently available only for Windows, Linux, NetBSD, and OpenBSD.
527 lines
15 KiB
Text
527 lines
15 KiB
Text
To: Users
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From: Bob Supnik
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Subj: SDS 940 Simulator Usage
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Date: 15-Nov-2002
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COPYRIGHT NOTICE
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The following copyright notice applies to both the SIMH source and binary:
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Original code published in 1993-2002, written by Robert M Supnik
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Copyright (c) 1993-2002, Robert M Supnik
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Permission is hereby granted, free of charge, to any person obtaining a
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copy of this software and associated documentation files (the "Software"),
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to deal in the Software without restriction, including without limitation
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the rights to use, copy, modify, merge, publish, distribute, sublicense,
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and/or sell copies of the Software, and to permit persons to whom the
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Software is furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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ROBERT M SUPNIK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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Except as contained in this notice, the name of Robert M Supnik shall not
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be used in advertising or otherwise to promote the sale, use or other dealings
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in this Software without prior written authorization from Robert M Supnik.
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This memorandum documents the SDS 940 simulator.
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1. Simulator Files
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sim/ sim_defs.h
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sim_rev.h
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sim_sock.h
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sim_tmxr.h
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scp.c
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scp_tty.c
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sim_sock.c
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sim_tmxr.c
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sim/sds/ sds_defs.h
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sds_cpu.c
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sds_drm.c
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sds_dsk.c
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sds_io.c
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sds_lp.c
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sds_mt.c
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sds_mux.c
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sds_rad.c
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sds_stddev.c
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sds_sys.c
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2. SDS 940 Features
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The SDS-940 simulator is configured as follows:
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device simulates
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name(s)
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CPU SDS-940 CPU with 16KW to 64KW of memory
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CHAN I/O channels
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PTR paper tape reader
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PTP paper tape punch
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TTI console input
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TTO console output
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LPT line printer
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RTC real-time clock
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MUX terminal multiplexor
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DRM Project Genie drum
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RAD fixed head disk
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DSK 9164/9165 rapid access (moving head) disk
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MT magnetic tape
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Most devices can be disabled or enabled with the SET <dev> DISABLED and
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SET <dev> ENABLED commands, respectively.
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2.1 CPU
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The CPU options set the size of main memory and the configuration of
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peripherals.
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SET CPU 16K set memory size = 16KW
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SET CPU 32K set memory size = 32KW
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SET CPU 48K set memory size = 48KW
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SET CPU 64K set memory size = 64KW
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SET CPU GENIE enable DRM, set terminal mux
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to GENIE mode
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SET CPU SDS disable DRM, set terminal mux
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to SDS mode
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If memory size is being reduced, and the memory being truncated contains
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non-zero data, the simulator asks for confirmation. Data in the truncated
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portion of memory is lost. Initial memory size is 64KW.
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CPU registers include the visible state of the processor as well as the
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control registers for the interrupt system.
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name size comments
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P 14 program counter
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A 24 accumulator A
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B 24 accumulator B
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X 24 index register
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OV 1 overflow indicator
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EM2 3 memory extension, quadrant 2
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EM3 3 memory extension, quadrant 3
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RL1 24 user relocation register 1
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RL2 24 user relocation register 2
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RL4 12 kernel relocation register
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NML 1 normal mode flag
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USR 1 user mode flag
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MONUSR 1 monitor-to-user trap enable
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ION 1 interrupt enable
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INTDEF 1 interrupt defer
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INTREQ 32 interrupt request flags
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APIACT 5 highest active API level
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APIREQ 5 highest requesting API level
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XFRREQ 32 device transfer request flags
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BPT 4 breakpoint switches
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ALERT 6 outstanding alert number
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STOP_INVINS 1 stop on invalid instruction
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STOP_INVDEV 1 stop on invalid device number
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STOP_INVIOP 1 stop on invalid I/O operation
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INDLIM 8 maximum indirect nesting depth
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EXULIM 8 maximum execute nesting depth
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PCQ[0:63] 14 P prior to last branch or interrupt;
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most recent P change first
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WRU 8 interrupt character
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2.2 Channels (CHAN)
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The SDS 940 has up to eight I/O channels, designated W, Y, C, D, E, F, G,
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and H. W, Y, C, and D are time-multiplexed communications channels (TMCC);
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E, F, G, and H are direct access communications channels (DACC). Unlike
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real SDS 940 channels, the simulated channels handle 6b, 12b, and 24b transfers
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simultaneously. The association between a device and a channel is displayed
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by the SHOW <dev> CHAN command:
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SIM> SHOW LPT CHAN
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channel=W
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The user can change the association with the SET <dev> CHAN=<chan> command,
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where <chan> is a channel letter:
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SIM> SET LPT CHAN=E
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SIM> SHOW LPT CHAN
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channel=E
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Each channel has nine registers. The registers are arrays, with entry [0]
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for channel W, entry [1] for channel Y, etc.
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name size comments
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UAR[0:7] 6 unit address register
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WCR[0:7] 15 word count register
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MAR[0:7] 16 memory address register
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DCR[0:7] 6 data chaining register
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WAR[0:7] 24 word assembly register
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CPW[0:7] 2 characters per word
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CNT[0:7] 3 character count
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MODE[0:7] 12 channel mode (from EOM instruction)
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FLAG[0:7] 9 channel flags
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The user can display all the registers in a channel with the command SHOW
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CHAN <chan>.
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2.3 Console Input (TTI)
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The console input (TTI) polls the console keyboard for input. It
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implements these registers:
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name size comments
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BUF 6 data buffer
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XFR 1 transfer ready flag
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POS 32 number of characters input
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TIME 24 polling interval
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By default, the console input is assigned to channel W.
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2.4 Console Output (TTO)
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The console output (TTO) writes to the simulator console window. It
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implements these registers:
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name size comments
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BUF 6 data buffer
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XFR 1 transfer ready flag
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POS 32 number of characters input
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TIME 24 time from I/O initiation to interrupt
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By default, the console output is assigned to channel W.
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2.5 Paper Tape Reader (PTR)
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The paper tape reader (PTR) reads data from a disk file. The POS
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register specifies the number of the next data item to be read. Thus,
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by changing POS, the user can backspace or advance the reader.
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The paper tape reader implements these registers:
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name size comments
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BUF 6 data buffer
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XFR 1 transfer ready flag
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SOR 1 start of record flag
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CHAN 4 active channel
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POS 32 number of characters input
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TIME 24 time from I/O initiation to interrupt
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STOP_IOE 1 stop on I/O error
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Error handling is as follows:
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error STOP_IOE processed as
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not attached 1 report error and stop
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0 out of tape
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end of file 1 report error and stop
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0 out of tape
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OS I/O error x report error and stop
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By default, the paper tape reader is assigned to channel W.
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2.6 Paper Tape Punch (PTP)
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The paper tape punch (PTP) writes data to a disk file. The POS
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register specifies the number of the next data item to be written.
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Thus, by by changing POS, the user can backspace or advance the punch.
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The paper tape punch implements these registers:
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name size comments
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BUF 6 data buffer
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XFR 1 transfer ready flag
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LDR 1 punch leader flag
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CHAN 4 active channel
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POS 32 number of characters input
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TIME 24 time from I/O initiation to interrupt
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STOP_IOE 1 stop on I/O error
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Error handling is as follows:
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error STOP_IOE processed as
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not attached 1 report error and stop
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0 out of tape
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OS I/O error x report error and stop
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By default, the paper tape punch is assigned to channel W.
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2.7 Line Printer (LPT)
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The line printer (LPT) writes data to a disk file. The POS register
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specifies the number of the next data item to be written. Thus,
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by changing POS, the user can backspace or advance the printer.
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The line printer implements these registers:
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name size comments
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BUF[0:131] 8 data buffer
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BPTR 8 buffer pointer
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XFR 1 transfer ready flag
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ERR 1 error flag
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CHAN 4 active channel
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CCT[0:131] 8 carriage control tape
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CCTP 8 pointer into carriage control tape
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CCTL 8 length of carriage control tape
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SPCINST 24 spacing instruction
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POS 32 number of characters input
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CTIME 24 intercharacter time
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PTIME 24 print time
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STIME 24 space time
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STOP_IOE 1 stop on I/O error
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Error handling is as follows:
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error STOP_IOE processed as
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not attached 1 report error and stop
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0 out of paper
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OS I/O error x report error and stop
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By default, the line printer is assigned to channel W.
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2.8 Real Time Clock (RTC)
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The real time clock (RTC) implements these registers:
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name size comments
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PIE 1 interrupt enable
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TIME 24 tick interval
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TPS 8 ticks per second
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The real-time clock autocalibrates; the clock interval is adjusted up or
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down so that the clock tracks actual elapsed time.
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2.9 Terminal Multiplexor (MUX)
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The terminal multiplexor provides 32 asynchronous interfaces. In Genie
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mode, the interfaces are hard-wired; in SDS mode, they implement modem
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control. The multiplexor has two controllers: MUX for the scanner, and
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MUXL for the individual lines. The terminal multiplexor performs input
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and output through Telnet sessions connected to a user-specified port.
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The ATTACH command specifies the port to be used:
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ATTACH MUX <port> set up listening port
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where port is a decimal number between 1 and 65535 that is not being used
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for other TCP/IP activities.
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Each line (each unit of MUXL) supports one option: UC, when set, causes
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lower case input characters to be automatically converted to upper case.
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Once MUX is attached and the simulator is running, the multiplexor listens
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for connections on the specified port. It assumes that the incoming
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connections are Telnet connections. The connections remain open until
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disconnected either by the Telnet client, a SET MUX DISCONNECT command,
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or a DETACH MUX command.
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The SHOW MUX CONNECTIONS command displays the current connections to the
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extra terminals. The SHOW MUX STATISTICS command displays statistics for
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active connections. The SET MUX DISCONNECT=linenumber disconnects the
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specified line.
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The controller (MUX) implements these registers:
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name size comments
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STA[0:31] 6 status, lines 0 to 31
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RBUF[0:31] 8 receive buffer, lines 0 to 31
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XBUF[0:31] 8 transmit buffer, lines 0 to 31
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FLAGS[0:127] 1 line flags, 0 to 3 for line 0,
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4 to 7 for line 1, etc
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SCAN 7 scanner current flag number
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SLCK 1 scanner locked flag
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TPS 8 character polls per second
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The lines (MUXL) implements these registers:
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name size comments
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TIME[0:31] 24 transmit time, lines 0 to 31
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The additional terminals do not support save and restore. All open
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connections are lost when the simulator shuts down or MUX is detached.
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2.10 Project Genie Drum (DRM)
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The Project Genie drum (DRM) implements these registers:
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name size comments
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DA 19 drum address
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CA 16 core address
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WC 14 word count
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PAR 12 cumulative sector parity
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RW 1 read/write flag
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ERR 1 error flag
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STA 2 drum state
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FTIME 24 channel program fetch time
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XTIME 24 interword transfer time
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STOP_IOE 1 stop on I/O error
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Error handling is as follows:
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error STOP_IOE processed as
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not attached 1 report error and stop
|
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0 drum not ready
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Drum data files are buffered in memory; therefore, end of file and OS
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I/O errors cannot occur. Unlike conventional SDS 940 devices, the Project
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Genie drum does not use a channel.
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2.11 Rapid Access (fixed head) Disk (RAD)
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The rapid access disk (RAD) implements these registers:
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name size comments
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DA 15 disk address
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SA 6 sector word address
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BP 1 sector byte pointer
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XFR 1 data transfer flag
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NOBD 1 inhibit increment across track
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|
ERR 1 error flag
|
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CHAN 4 active channel
|
|
PROT 8 write protect switches
|
|
TIME 24 interval between halfword transfers
|
|
STOP_IOE 1 stop on I/O error
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|
|
|
Error handling is as follows:
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|
|
|
error STOP_IOE processed as
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|
|
not attached 1 report error and stop
|
|
0 disk not ready
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|
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end of file x assume rest of disk is zero
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OS I/O error x report error and stop
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By default, the rapid access disk is assigned to channel E.
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2.12 Moving Head Disk (DSK)
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DSK options include the ability to make the drive write enabled or write
|
|
locked:
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|
|
SET RAD LOCKED set write locked
|
|
SET RAD WRITEENABLED set write enabled
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|
|
The moving head disk implements these registers:
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|
|
|
name size comments
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|
|
BUF[0:63] 8 transfer buffer
|
|
BPTR 9 buffer pointer
|
|
BLNT 9 buffer length
|
|
DA 21 disk address
|
|
INST 24 disk instruction
|
|
XFR 1 data transfer flag
|
|
ERR 1 error flag
|
|
CHAN 4 active channel
|
|
WTIME 24 interval between character transfers
|
|
STIME 24 seek interval
|
|
STOP_IOE 1 stop on I/O error
|
|
|
|
Error handling is as follows:
|
|
|
|
error STOP_IOE processed as
|
|
|
|
not attached 1 report error and stop
|
|
0 disk not ready
|
|
|
|
Rapid access disk data files are buffered in memory; therefore, end of file
|
|
and OS I/O errors cannot occur. By default, the rapid access disk is
|
|
assigned to channel F.
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|
|
|
2.13 Magnetic Tape (MT)
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|
|
|
MT options include the ability to make units write enabled or write locked.
|
|
|
|
SET MTn LOCKED set unit n write locked
|
|
SET MTn WRITEENABLED set unit n write enabled
|
|
|
|
Units can also be set ONLINE or OFFLINE.
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|
|
|
The magnetic tape implements these registers:
|
|
|
|
name size comments
|
|
|
|
BUF[0:131071] 8 transfer buffer
|
|
BPTR 18 buffer pointer
|
|
BLNT 18 buffer length
|
|
XFR 1 data transfer flag
|
|
CHAN 4 active channel
|
|
INST 24 magtape instruction
|
|
EOF 1 end-of-file flag
|
|
GAP 1 inter-record gap flag
|
|
SKIP 1 skip data flag
|
|
CTIME 24 interval between character transfers
|
|
GTIME 24 gap interval
|
|
POS[0:7] 32 position, drives 0:7
|
|
STOP_IOE 1 stop on I/O error
|
|
|
|
Error handling is as follows:
|
|
|
|
error processed as
|
|
|
|
not attached tape not ready; if STOP_IOE, stop
|
|
|
|
end of file end of tape
|
|
|
|
OS I/O error end of tape; if STOP_IOE, stop
|
|
|
|
By default, the magnetic tape is assigned to channel W.
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|
|
|
2.13 Symbolic Display and Input
|
|
|
|
The SDS 940 simulator implements symbolic display and input. Display is
|
|
controlled by command line switches:
|
|
|
|
-a display as ASCII character
|
|
-c display as four character SDS string
|
|
-m display instruction mnemonics
|
|
|
|
Input parsing is controlled by the first character typed in or by command
|
|
line switches:
|
|
|
|
' or -a ASCII character
|
|
" or -c four character SDS string
|
|
alphabetic instruction mnemonic
|
|
numeric octal number
|
|
|
|
Instruction input uses (more or less) standard SDS 940 assembler syntax.
|
|
There are eight instruction classes:
|
|
|
|
class operands examples comments
|
|
|
|
no operand none EIR
|
|
POP (prog op) op,addr{,tag} POP 66,100
|
|
I/O addr{,tag} EOM 1266
|
|
mem reference addr{,tag} LDA 400,2
|
|
STA* 300 indirect addr
|
|
reg change op op op... CLA CLB opcodes OR
|
|
shift cnt{,tag} LSH 10
|
|
chan command chan ALC W
|
|
chan test chan CAT Y
|
|
|
|
All numbers are octal. Channel designators can be alphabetic (W, Y, C, D, E,
|
|
F, G, H) or numeric (0-7). Tags must be 0-7, with 2 indicating indexing.
|