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MISC-684EC8E9

February 1993

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Document:	Notes for XXDP+ and XXDP V2 Operating Systems
Order Number:	MISC-684EC8E9
Revision:
Pages:	23
Original Filename:

OCR Text

XXDP
Notes for XXDP+ and XXDP V2 Operating Systems
Pete Turnbull, February 1993

XXDP - Diagnostic Program Monitor
XXDP is a small, compact operating system designed to provide a suitable environment across the
range of DIGITAL Q-bus and Unibus machines to run diagnostic (test and maintenance) software.
The name comes from the four-character names given to diagnostic programs. XXDP is not
intended to provide a software-development environment, this is usually done under, for example,
RSX11.
Early versions were quite simple and consisted of a monitor program such as RKDP.SAV (the
monitor for RK05-based systems) and a few utilities. Later versions, called XXDP+, added a few
more operations and used monitors with names of the form HMddvp.SYS (HM signifies a
monitor, dd is the device mnemonic, and v and p are the version and patch levels). XXDP+ could
tell what kind of bus system it was running on, unless it was an 11/23 or 11/24. XXDP+ Version
1.1, sometimes called XXDP++ or XXDP Super-plus, was basically similar but with some
enhancements, notably the introduction of Diagnostic Runtime Services which provided a
common supervisor and setup functions for compatible diagnostics. XXDP Version 2 added
memory management, English-type commands in addition to the single-letter monitor commands,
and device drivers separate from the monitor program itself.
Naming Conventions:
XXDP.???

where XX is a device mnemonic, and DP stands for Diagnostic
Program, is used on oldest versions for monitor and bootstrap programs
(eg RKDP.SAV), and for directory listings (eg RLDP.DIR). It is also
used for distribution media (eg RKDP is XXDP on an RK05 disk pack).

Hxmnrp.SYS

used for XXDP+ system files. H means a system file; x may be
M,D,U,S,Q representing Monitor, Device Driver, Utility, Supervisor, or
miscellaneous files; mn is the device mnemonic for the medium
supported; rp specifies the revision and patch levels. Thus
HMRLA1.SYS is the system monitor for an RL01/RL02 system, first
issue, patch level 1. Special mnemonics include DI (directory utility),
SU (setup utility), AA (XXDP supervisor file), AB (PT/AMS
supervisor file), SA (user manual).

tmnirp.BI?

used for XXDP+ (and later) diagnostics, also some .OBJ files.
t
processor type code, eg V
mn
device mnemonic, eg RQ
i
a unique program identifier, eg C
rp
revision and patch level, eg B2
Thus ZRQCH0.BIC is for any processor, using an RQDX controller,
the third diagnostic of a set (this one is a disk formatter), eighth version,
never patched or updated.

Dtirp.BIN

used for Unibus tests; t=type of test, otherwise as above
0
instruction test
1
addressing test
6
AA11/VT06/LAB11 test
8
Unibus test

Standard Files:
COPY.BIN
DATE.SYS
DRSSM.SYS

XXDP+ copy program
XXDP Ver.2 date utility
XXDP Ver.2 Diagnostic Runtime Services supervisor for use under
the small monitor
DRSXM.SYS XXDP Ver.2 DRS supervisor for use under the extended monitor
DIR.SYS
XXDP Ver.2 directory utility
DUSZ.SYS
XXDP Ver.2 ????
DXCL.BIN
DEC/X11 (automated testing) configurator and linker
HELP.TXT
Help Text file
MN.SYS
XXDP Ver.2 device driver for device MN, eg DL.SYS for RL01/2
PATCH.BI?
program to patch diagnostics
SETUP.BI?
Setup utility for DRS-compatible diagnostics
UPDn
XXDP+ Update utility, n is version 1 or 2 (1 is obsolete, smaller
and less useful)
UPDAT.BIC
XXDP Ver.2 Update utility
XTECO.BI?
simple text editor
XXBLD.BI?
utility to build new media containing XXDP system
XXDPSM.SYS XXDP Ver.2 small monitor (runs in 28KW or less)
XXDPXM.SYS XXDP Ver.2 extended monitor, has 22-bit memory management
and can use up to 124KW memory
nDIREC.TRY directory listing file, n=1..2..3...
Standard File Types:
.BAK
.BIC
.BIN
.CCC
.DIR
.LIB
.MPG
.OBJ
.SAV
.SYS
.TRY
.TXT

backup file created by XTECO
chainable binary image file
binary image file
chain file (a batch file containing textual commands)
directory listing file, as created by DIR utility
library file
???
DEC/X11 object code
memory image file (usually executable code)
system file
directory text file
ASCII text file

Characters and Wildcards:
As XXDP stores filenames in RADIX-50 format, the only legal characters in filenames and
extensions are upper-case letters A...Z, and numerals 0...9. The dollar symbol "$" and fullstop or period "." have special significance and should not be used, except that a full-stop is
used to separate a filname from its extension. Spaces are not allowed.
In most situations, XXDP supports the use of wildcard characters in filenames.
?
*

represents a single character
represents any number of characters

Processor Types:
A
B
C
D
E
F
G
H
J
K
M
N
P
Q
R
T
V
X
Z

11/05, 11/15, 11/20
11/40
11/45
GT40, general Unibus
11/70
11/34
11/04
used for system files
11/23, 11/24
11/44
MNC-11
System Industrie 9400 controller diagnostics
PDT-11, Plessey diagnostics
11/60
LPA-11
.MPG files
11/03
DEC/X11 OBJ files
any processor

Device Mnemonics used in Diagnostics:
AA
AD
AF
AR
AX
BB
BM
BT
CB
CD
CL
CM
CP
CT
CR
DC
DF
DH
DJ
DL
DM
DN
DP
DQ
DR

AA11, AAV11
AD11, ADV11, AD01
AFC11
AR11
AXV11
KIT11
BM873, BDV11
Bus Tester
CB11
CD11, CDS11
CL11
CM11
DEC/X11 CPU
CT11
CR11
DC11
DFC11
DH11, DHV11
DJ11
DL11, DLV11
DM11, DMx11
DN11
DP11, DUP11, DPV11
DQ11, DQV11
DR11, DRV11

DT
DU
DV
DX
DZ
FP
GT
IB
IR
IT
KA
KB
KC
KD
KE
KG
KH
KL
KK
KM
KP
KT
KU
KX
KW

DT07, DTE20
DU11, DUV11
DV11, DLV11
DX11
DZ11, DZV11
FP11, FPF11
GT40, GT44
IBV11
ICR11
ITEP
LSI-11 CPU
CPU
CPU
PDT11, 11/23, 11/24 CPU
CPU
CPU
KIT11
KL11
Cache Memory
KMC11, Memory
KPV11
Memory Management
KUV11
KXT11
KW11, KWV11

Device Mnemonics used in Diagnostics (continued):
LA
LC
LK
LP
LQ
LS
LV
M8
M9
MF
MJ
MK
ML
MM
MN
MR
MS
MX
NC
PA
PC
PL
PM
QE
QM
QK
QU

LA11, LC11, DEC Printers
LC11
LK11
LP11, LPx11
LQP
LS11
LV11
BDV11
M9301, M9312, REV11, TEV11
Memory
Memory
Memory
Memory
Memory
MNC11
MR11, MRV11-B
Memory
MXV11
NC11, NCV11
PA611, TYP11
PC11, PCS11, IPV11/12
PCL11
PDM70
CPU
Memory
CPU
DEC/X11

R6
RC
RF
RH
RJ
RK
RL
RM
RP
RQ
RS
RT
RX
TA
TC
TE
TK
TM
TR
TS
TU
UD
VS
VT
XY

RK611, RK06/07
RC11, KLESI-QA, RC25
RF11
RH70
RP04/05/06
RK11, RKV11, RK05
RL11, RLV11/12, RL01/02
RH11, RH70, RM02/03
RP11, RP02/03
MSCP disk controllers and drives
RH11, RS03/04
RT01/02
RX11, RXV11, RXV21, RX01/02
TA11
TC11
TE16, TU77, TM03
TKQ50, TK50/75
TM11, TMA11, TE10
TR79F
TS11, TS03, TSV05
TM02, TU10, TU58
UDC11, UDA50, KDA50-Q,
RA60/80/81
VS11, VSV11, VS60
VT
XY11

Note that these are not the same as standard DIGITAL device-driver mnemonics.

HELP for XXDP V2

(HELP.TXT Rev: 6.0)

LIST>
The commands outlined here are for XXDP V2 only!
LP: = line printer
TT: = Console terminal
SM: = Small monitor
XM: = Extended monitor
HELP is available on the following topics:
BOOT
COPY
DELETE
INFONBOOT
PRINT
START
UPDAT

BOOTSM
DATE
DIRECTORY
INITIALIZE
RENAME
SMALLMON
V2.4

CHAIN
DEFSM
ENABLE
LOAD
RUN
SWITCHES
VERSION

CLEAR
DEFXM
HELP
NOTES
SET
TYPE

INFONBOOT>
XXDP V2 can boot two monitors (XXDPSM or XXDPXM). The “SM” or Small
monitor is for systems that are 28k or smaller in size, the “XM” or Extended monitor is
for systems larger than 28k. The “SM” monitor works like the monitor of XXDP+ V1
and will run all programs written for V1. The “XM” monitor offers the new features
advertised in XXDP V2. By default you will boot up the “XM” monitor provided the
system has enough memory and memory management capability.
Start-up file BOOT.CCC
At boot time, a start-up file BOOT.CCC will be executed as a chain file. If this file does
not exist, there will be no warning message, boot will continue and by default the “XM”
monitor will be booted up. If the file exists, it must contain one of the two commands
listed below. Only one of the two commands may be used at a time and it should be on
the first line of the file with no leading spaces. If the file does not contain one of the two
commands it will boot up the “XM” monitor. Note, if the system does not have more than
28K worth of memory or memory management capability the “SM” monitor will be
booted up.
SM
QUIET

Boots the “SM” monitor.
Boots “XM” monitor in UFD mode. (SYSTEM.CCC must exist)

SMALLMON>
SMALL MONITOR (XXDPSM)
The following are legal commands : (format of each command is shown)
C

run a batch job (chain)
C filename.CCC[/switches]

list directory of load medium
D[/L][/F] “/L” switch = on a LP:
“/F” switch = in a short form.

DAte

inspect or set the current system date.
(For more information see “HELP DATE”)

enable alternative drive for system device
En
where n is the new drive number

type help information about XXDP V2
H[/L]
“/L” = print on a LP:

load a program
L filename[.ext]
Example:
.L DIAG
.L ZDJCA2.NEW

(load DIAG.BI?)
(load ZDJCA2.NEW)

run a program
R filename[.ext] [addr]

start a program
S [addr]

toggles the console terminal type between video and hard copy
(The default terminal type is hard copy)

EXTENDED_MON>
EXTENDED MONITOR (XXDPXM)
The following are legal commands : (format for each command is shown)
(Letters shown in upper case are required to make a command unique)
Boot

directs monitor to boot another XXDP device
BOOT dev:

BOOTSm
directs monitor to boot up the small monitor.
BOOTSM
COpy

transfer files and maintenance operations
COpy [/BOOT] input-filespec output-filespec
[/FILES]
[/DEVICE]
[/DELETE]
Examples:
.COPY A.BIN DY0:
(Copy A.BIN from system device to DY0:)
.COPY/BOOT DM0: DM1:
(Copy monitor from DM0: to DM1:)
.COPY/FILES DL0: DL1:
(Copy all files from DL0: to DL1:)
.COPY/DEVICE DY0: DY1:
(Copy device image from DY0: to DY1:)

Chain

execute a batch, or chain file. The file must have extension .CCC
CHAIN filespec[/switches]

CLear

Clears the SM and XM flags. When these flags are cleared they allow the
monitor to check bit 12 of location 52 before running any program. If bit
12 is set the program will be run under the extended monitor. If bit 12 is not
set then the program will be run under the small monitor.
Note :- On boot up (by default) these flags are cleared and can be set by
issuing the DEFSM or DEFXM command only.

DATE inspect or to set the current system date
DATE dd-mmm-yy
(Default dates are 01-JAN-84 for SM)
(
01-JAN-87 for XM)
where
dd
= day (a decimal number from 1 to 31)
mmm = month, first three characters
yy
= year (a decimal number from 83 to 99)
Example (setting date):
.DATE 18-MAY-83
Example (obtaining date):
.DATE
18-MAY-83
DElete deletes the file(s) that are specified.

DElete[/NOREWIND] filespec
[/NONAMES ]
Example:
.DELETE DU0:ABC.BIN
.DELETE/NONAMES DU0:ABC?.BIN
.DELETE/NOREWIND MU0:*.TXT

(No file names will print)
(No tape rewind between files)

Directory
list all files on a XXDP device.
DIRECTORY[/PRINTER]
[/FAST]
where
/PRINTER = print on LP:
/FAST
= show in short form

Enable enable alternative drive for system device
En
where n is the new drive number

Help

types HELP.TXT which contains help on XXDP V2
H[/PRINTER]
Help
Displays topic list
Help ?
Displays topic list
Help *
Displays help on all Topics
Help Topic
Displays help on that Topic
Help To*
Displays help on all topics starting with the letters “To”
Note : To exit help, simply type in EXit or a carriage return.

INItialize
initialize device directory into XXDP format.
INITIALIZE device: CAUTION: All data on device is lost!

Load

load a file into memory
LOAD filespec
Example:
.LOAD ZKXCA0.BIC
(load DIAG.BI?)
NOTE: This command is used to load programs whose extensions are
.BIC, .BIN or .SYS only.

Print contents of files on the specified device on LP:
PRINT[/NOREWIND] filespec
Example:
.PRINT DY0:SYSTEM.CCC
.PRINT/NOREWIND MS1:*.TXT

REname

change the file specification of an existing file
RENAME input-filespec output-filespec
Example:
.RENAME DX1:DIAG.OLD=DX1:DIAG.BIN

Run

load and start a program that is stored on system device.
RUN filespec [addr]
Examples:
.RUN UPD2
(load/start UPD2.BIN)
.RUN SAMPLE.XXX
(load/start SAMPLE.XXX)
.RUN FXDIAG 204
(load/start FXDIAG.BI? at location 204)

Set

changes device characteristics and system parameters.
SET [device]:condition
[ item ]
where “device” = device whose characteristics are modified.
“item” = system parameter that needs to be modified.
Examples:
.SET TT:SCOPE
(RUBOUT will delete characters - XM Default)
.SET TT:NOSCOPE (RUBOUT will echo deleted characters - SM Default)
.SET TT:QUIET
(Prevent system from echoing lines from a chain file
or from diagnostics that are running from a chain
file)
(Default = NOQUIET)

DEFSm Sets the SM flag. After issuing this command all programs will be run
under the small monitor until the CLEAR command is issued. Bit 12 of
location 52 will not be checked at all and by default any program(s) run
after this command is issued will be run under SM.
Note of caution :- If you plan to run only one program under SM and issue
this command make sure you issue the “CLEAR” command after your
program has completed running. Else by default every program will run
under SM regardless of whether bit 12 was set or not.

DEFXm Sets the XM flag. After issuing this command all programs will be run
under the extended monitor until the CLEAR command is issued. Bit 12
of location 52 will not be checked at all and by default any program(s) run
after this command is issued will be run under XM.
Note of caution :- If you plan to run only one program under XM and issue
this command make sure you issue the “CLEAR” command after your
program has completed running. Else by default every program will run
under XM regardless of whether bit 12 was set or not.

Start

start a file that has been loaded into memory via LOAD
START [addr]
A starting address may be entered

Type

prints the contents of a file on the terminal
TYPE[/NOREWIND] filespec
Example:
.TYPE/NOREWIND *.TXT

Version Prints information about the Extended monitor.
Version
V2.4>
There are some major differences in V2.4 and all of the previously released versions
of XXDP V2. The main difference is the way programs will be run from now on.
In previous versions, programs were run under the same monitor that was displayed
on boot up, i.e. if you booted the small monitor you ran all your programs under the
small monitor. If you booted the extended monitor you ran all programs under the
extended monitor. The problem with this was that you would have to reboot the
other monitor if you had a program that ran on one and did not run on the other.
In V2.4 (and following versions), this problem is solved, programs will be run after a
check is made on bit 12 location 52 (after the program has been loaded) and if this bit
is set the program will be run under the extended monitor. If this bit is not set, the
program will run under the small monitor. Unlike the previous versions there will
be no need to reboot.
Bit 12 of location 52 should be set by using the “UPDAT” or “PATCH” utility. If
UPDAT is used you might have to change the LOCORE of your program. Please
sure the “CLR” command is issued before loading the program and changing the
locore.
Note : Look at the “DEFSM”, “DEFXM” and the “CLEAR” commands in this help
file if you are unable to set bit 12 by using the utilities.
SWITCHES>
Switches - are not applicable to all commands
- these switches are not system defaults
/PRINTER = print on LP:
/NONAMES = No file names will be shown
/NOREWIND = prevents tape rewinding between files
UPDAT>
UPDAT program
This program uses the same commands as UPD2. Commands SAVM and SAVE
are no longer supported. The following command has been added to build bootable
media. It will work with tapes or disks.
CREATE DY0: (will create a bootable DY from your system media)

NOTES>
CAUTION:

Do NOT use XXDP+ V1 to write to XXDP V2 media.
XXDP V2 may read or write to XXDP+ V1.

NOTE:

The monitor only sizes to 124k words.
For a detailed description of these commands see XXDP/DRS User Manual

DRS - Diagnostic Runtime Services
This is a sort of supervisor which oversees the running of diagnostics (except some old ones).
It provides a standard format for dialogue etc, and a standard set of control functions and
commands. The prompt is DR>, issued when a diagnostic is RUN from the monitor.
Commands may be truncated to three characters and some may be modified by threecharacter switches. DRS deals with UUTs (Units Under Test) each of which is assigned a
logical unit number (0-63). Each diagnostic is controlled by a hardware parameter table and a
software parameter table, is divided into one or more TESTs, and will be executed in one or
more PASSes. These tables can be pre-set by the SETUP utility, otherwise a series of
questions will be asked after the diagnostic is STArted. Many questions have defaults
(diagnostic-dependant) which will be displayed immediately before the question mark; all
will show what kind of response is required by a single letter in parentheses.
Question types:
(B)
(O)
(D)
(A)
(L)

requires a binary number
requires an octal number
requires a decimal number
requires an ASCII character or string
requires a logical (Y or N) response

Error Messages
Errors are displayed at three levels. The header level shows only:
ZNAME TYP ERR eeeee ON UNIT n TST ttt SUB sss PC: ppppp
where ZNAME is the name of the diagnostic, TYP is the type of error (HaRD, SoFT), eeeee
is a five-digit error code number (not a total), n is the unit number, ttt is the three-digit test
number, sss is subtest or section number, ppppp is the value of the program counter at time of
the error. The basic level adds an additional line of descriptive text, eg:
REGISTER FAILED TO CLEAR AFTER BUS RESET
and finally the extended level provides both of the above and also a line of supporting
information such as CSR contents.
Commands:
STA[RT]

reloads the trap catcher, initialises the diagnostic, clears all flags
and runs all tests on all units, normally first asking the user to
change the hardware and software tables

RES[TART]

like START, but does not reload the trap catcher, may not fully
initialise the diagnostic, and asks no hardware table questions

CON[TINUE]

restarts the test (not the whole diagnostic) which stopped on an
error, or was stopped by CTRL-C from the operator, for any
remaining passes/units. Does not initialise the diagnostic nor ask
hardware table questions but may ask software table questions

PRO[CEED]

resumes testing from the point at which it halted on error (not in
response to CTRL-C), for any remaining passes/units, without any
initialisation at all

DRO[P]

drops unit(s) from the test list. Drops all units unless /UNITS switch is
used

ADD

adds unit(s) to the test list. Adds all de-activated units unless the
/UNITS switch is used

DIS[PLAY]

shows hardware table parameters for units in the test list

FLA[GS]

shows current status of all flags. Takes no parameters

ZFL[AGS]

clears all flags to zeros. Flags are set by using /FLAGS switch with
START, RESTART, CONTINUE or PROCEED

Switches:
/TES[TS]:

followed by a list of test numbers to be executed. Separate test
numbers with colons

/PAS[S]:

followed by a decimal number in the range 1-65536, being the number
of times each test should be executed

/FLA[GS]:

followed by a list of flags to be set. Separate flags with colons

/EOP:

followed by a decimal number in the range 1-65536, being the number
of passes after which an "End of Pass" message is to be printed, giving
the number of passes completed and the number of errors found

/UNI[TS]:

followed by a list of unit numbers to be included. Separate unit
numbers by commas, or describe a range by giving first and last
members separated by a dash

Valid combinations of switches and commands:

START
RESTART
CONTINUE
PROCEED
DROP
ADD
PRINT
DISPLAY
FLAGS
ZFLAGS
EXIT

/TESTS

/PASS

/FLAGS

/EOP

/UNITS

yes
yes
.
.
.
.
.
.
.
.
.

yes
yes
yes
.
.
.
.
.
.
.
.

yes
yes
yes
yes
.
.
.
.
.
.
.

yes
yes
yes
.
.
.
.
.
.
.
.

yes
yes
.
.
yes
yes
.
yes
.
.
.

Flags:
HOE

Halt On Error - the diagnostic will return to DR> level if an error is
detected

LOE

Loop On Error - the diagnostic will loop continually through the
sub-test which found the error, even if the error condition clears
(allowing testing for intermittent errors), until the operator types
CTRL-C

IER

Inhibit Error Reports - prevents error messages (except some
essential system error messages such as Illegal Interrupt) being
typed. Does not affect end-of-pass messages

IBE

Inhibit Basic Error reports - print only header messages

IXE

Inhibit eXtended Error reports - print only basic error messages

PRI

PRInt directly to lineprinter - send all messages except command
messages to lineprinter instead of console

PNT

Print Number of Test - print test number as it executes

BOE

Bell On Error - sound bell if an error is detected

UAM

UnAttended Mode - suppresses requirement for operator
intervention, but may also suppress some testing

ISR

Inhibit Statistical Reports - not all diagnostics support statistical
reports anyway

IDR

Inhibit DRopping of units - don't drop a unit from the test list if it
generates an error. If not used, a UUT may be dropped if it reaches
an error threshold (more than a pre-set number of errors) or
generates a serious error.

ADR

execute AutoDRop code - causes diagnostic to test for "device
available" or "device ready". Not all diagnostics support this

LOT

Loop On Test - causes DRS to continually execute tests in the test
list, without re-executing initialisation or end-of-pass code

EVL

use EVaLuation code - diagnostic-specific interpretation (or none)

UPD2 / UPDAT
File manipulation utility, which loads into the bottom part of memory. Used for building XXDP
media, copying, loading, modifying files, etc.
Commands:
DIR

directory of device
DIR [dev:[outfile][/Q]] [dev:][filespec][/Q][/F}[/B][/L]

PIP

copy file(s) or device - with no autodelete/overwrite
PIP [dev:][outfilespec][/Q]=[dev:][infilespec][/Q][/N]
eg PIP MM0:FILE??.*= copies all files from system device to MM0:,
renaming them so they all begin “FILE”.

FILE

like PIP, but no rename possible, and will autodelete/overwrite
FILE dev:[/Q]=[dev:][infilespec][/Q][/N]

DEL

delete file
DEL [dev:]filespec[/Q][/N]

REN

rename file
REN [dev:]newfilespec=[dev:]oldfilespec

CLR

clear buffer (sets all buffer locations to zero)
CLR

LOAD

loads binary file into buffer
LOAD [dev:]file[/Q][/N]
You can use wildcards, but this will load each matching file in turn, one
on top of the other!
/N = inhibit printing LOCORE, HICORE, and filename

MOD

modify contents of address, works rather like ODT. Linefeeds to move
to next location, and null entries, are allowed.
MOD mmmmmm<CR>

LOCORE

set lower memory limit used by program buffer

HICORE

set upper memory limit used by program buffer

XFR

sets transfer address (load address) of program in buffer

DUMP

saves memory image between LOCORE and HICORE
DUMP [dev:]filename[/Q]

ZERO

initialise medium (creates empty XXDP directory)
ZERO dev:

COPY

copies entire medium, block (image) mode or file mode
COPY dev:=dev:[/I | F] (default is /I)

CREATE

UPDAT only: save monitor file (bootstrap) to disk or tape
CREATE dev:

SAVE / SAVM UPD2 only: saves monitor file to disk (SAVE) or tape (SAVM)
SAVE dev:
SAVM dev:
ASG

assign logical unit to number to device
ASG dev:=n

execute indirect command file. Such files cannot contain the EXIT
command. Files can contain comments, if the first character on the
line is ";" or "$" the line is merely printed. If "$" is used,
operation is suspended until the operator types CTRL-X
DO [dev:]filename

READ

reads file to check validity (ie a verify command)
READ [dev:]filespec[/Q][/N}

EOT

writes logical EOT marker on a tape
EOT dev:

DRIVER

loads additional device driver (or two (maximum))
DRIVER dd:[/dd:]

BOOT

bootstraps a device
BOOT dev:

EXIT

return to XXDP monitor

send file to printer
PRINT [dev:]filename[/Q]

TYPE

send file to console
TYPE [dev:]filename[/Q]

Switches:
/Q
/N
/F
/F
/B
/L
/I

don't rewind tape before access
don't print filename(s) as they are found (or whatever)
in DIR, gives FAST (short) form
in COPY, uses FILE-by-file mode (default for COPY and PIP)
in DIR, gives free BLOCKS information
in DIR, send to LINEprinter
in COPY, use IMAGE mode (default for FILE)

PATCH
Patch is rather like a batch form of UPDAT for modifying files which are too big to fit in
UPDAT's buffer. It is used by building a file, or input table, which contains the changes required.
Syntax is as the corresponding UPD2 / UPDAT commands except where shown:
Commands:
BOOT

boots a device

CLR

clears the input table
CLR

EXIT

returns to the XXDP monitor

GETM

loads a DEC/X11 MAP file
GETM [dev:]filename

GETP

loads a saved input table
GETP [dev:]filename

KILL

deletes an address entry in the input table
KILL addr

MOD

enters an address in the input table

PATCH

creates a patched file from the original file plus the input table
PATCH [dev:]outputfile=[dev:]inputfile

SAVP

saves the input table
SAVP [dev:]filename

TYPE

displays the input table on console - takes no parameters
TYPE

SETUP
This is used to pre-build hardware tables for DRS-compatible diagnostics. It works by
loading the diagnostic specified, and asking the questions contained therein, just as if running
the diagnostic. It then saves the modified version, prompting for deletion of the original if the
output filename given is the same as the input filename (a negative answer aborts the save).
This is particularly useful for diagnostics to be used in batch files, where operator intervention
and DRS dialogue is normally suppressed.
Commands:
LIST

shows all DRS-compatible diagnostics on a device
LIST [dev:][filespec]

SETUP

loads a diagnostic and starts the process (file extension must be
BIN or BIC)
SETUP [dev:]outputfile=[dev:]inputfile

EXIT

return to XXDP monitor

XTECO
XTECO is a simple text editor, used primarily to build DO, STARTUP, SYSTEM, or CHAIN
files (ie small files of type .CCC). One limitation is that it can only buffer small amounts of text
in memory, so it is not always possible to go very far back in a file while editing. Editing is done
by issuing commands to modify the contents of the buffer, or to move the buffer pointer. When in
edit mode, the prompt changes from an asterisk to two quote characters. Any character, including
<tab>, <carriage-return>, <linefeed>, etc, can be placed in a file, but not <escape>, which is used
as a command terminator and is echoed as "$". All operations (except J, ZJ) are relative to the
current pointer; many can take an optional positive or negative integer, eg to specify how many
lines forward or back to move.
Commands:
TEXT

creates a new file
TEXT [dev:]filename

TECO

edits an existing file. Creates a backup (with .BAK extension) but
deletes this once the modified file is saved. Only works on randomaccess devices (ie disks).
TECO [dev:]filename

EDIT

edits an existing file, saving the new version under a different name
EDIT [dev:]newfile=[dev:]oldfile

TYPE

sends a text file to the console

sends a text file to the lineprinter

EXIT

returns to the XXDP monitor

Editing:

terminate commands with two <ALTMODE> or <ESCAPE>
L

move by a line; nL moves by n lines; n<0 means move back. The
pointer will be placed at the start of the appropriate line.

move by a character; nC moves by n chars; n<0 means back.

jump to beginning of text in buffer

jump to end of text in buffer

search for string in buffer, leaving pointer just past end of found string,
or at end of buffer if no match found. The string may include control
characters, such as <carriage-return>. S<string>$$

search for string in file, reading in more text (and writing out existing
buffer) if required.

type line of text; nT types n lines; n<0 means lines before pointer; HT

types the entire text. If the pointer is partway into a line, only the
part beyond the pointer is typed, unless n=0
D

delete character; nD delete n characters; n<0 means before pointer

delete line; nK delete n lines; n<0 means before pointer. If the
pointer is partway into a line, only the part beyond the pointer is
deleted, unless n=0. This command operates exactly like the T
command; use the matching T command to see exactly what will
be deleted.

insert string at pointer. I<string>$$

append text, ie read more into the buffer.

finish editing, close files, return to command level (the prompt
changes from two quotes to an asterisk).

Commands can be concatenated in any logical way, with commands separated by a single
<ALTMODE> or <ESCAPE>.

Batch Files
XXDP Version 2 and later versions of XXDP+ have extensive batch-control facilities. Most
monitor commands, utilities commands, and DRS comands and dialogue can be included. In
addition, batch files support conditionals, GOTOs, tags (for GOTOs etc), WAIT, etc. lines
starting with a semi-colon are regarded as comments.
Special Commands:
IF...THEN

an ASCII string goes between the IF and THEN, and subsequent
statements up to the END are conditionally executed.

IFERR THEN

for use with DRS-type diagnostics only. If the last diagnostic run
produced an error code, then the statements following THEN, up to the
END, will be executed.

IFLMD n THEN to check for a particular medium. This checks the media type byte (at
location 41 in XXDP++) and if it matches n the following statements,
up to the END, will be executed.
END

must be used to terminate the list of statements to be conditionally
executed.

GOTO

used to branch within a batch file, used with a tag.

TAG:

an ASCII string followed by a colon, used as a label for GOTO.

R or RUN

as the monitor command to run a diagnostic or utility, but the optional /
n switch permits diagnostics to be run n times.

CHAIN

runs another batch file. Note: only one level of nesting allowed; ie after
running another batch file from within the first, the first will resume,
however if a third was run from the second this would not work.

QUIET

used as a toggle, controlling typing of the batch file during execution.
Being a toggle, even numbers of occurences will turn typing back on.

used to force typing of a line while QUIET is in effect.
PRINT text

SMI

set manual intervention; overrides the (normal) suppression of DRS
dialogue in batch files.

CMI

clear manual intervention; the opposite of SMI.

QUIT

terminate batch job

WAIT

suspends execution until the operator types CTRL-X

Devices Supported by XXDP
TU60
RP04/5/6
TU58
RK05
RL01/2
RK06/7
RP02/3
RM02/3
RS03/4
DECTape
RX01
RX02
Low Speed Paper Tape
Printer
TM02
TS04
TE10
PDT11
High Speed PT Reader
Low Speed PT
High Speed PT Reader
Console
MSCP disk
MSCP tape

CT
DB
DD
DK
DL
DM
DP
DR
DS
DT
DX
DY
KB
LP
MM
MS
MT
PD
PP
PT
PR
TT
DU
MU

(no specific monitor)
(no specific monitor)

(no specific monitor)
(no specific monitor)
(no specific monitor)
(no specific monitor)

All device drivers in XXDP are small and simple, and may not contain comprehensive error
messages. All assume standard CSRs, but can be patched.