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       ====>>    SERVICE TESTS USERS GUIDE   <<====
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The service test disk contains 10 programs intended to aid the
service technician test Sols, memories and Helios systems. The
tests are all "Image type" files and may be loaded into memory
by simply typing the desired test name and a cariage return.
The following is a brief summary of the available tests:


16KRA:   not used    Tests a 16K block of contiguous memory be-
------               ginning at 1000 to 4FFF continuously until
                     the escape key is depressed.  The program
                     loads at 0000 and is approximately 256
                     bytes long.  When executed, the program
                     will not display anything on screen until
                     first pass has completed.  Details of this
                     test are at the end of the 16KRA manual.


32KRA:               Tests a 32K block of contiguous memory at
------               location 0000 - 7FFF in either a single
                     pass or a continuous loop mode.  The test
                     loads at memory location C900 (system RAM)
                     and is approximately 256 bytes long.  The
                     test begins by allowing the option of con-
                     tinuous or single pass and prints out a pat
                     tern of "G" and/or "X" as in the 16KRA test


48K:                 This test will check 48K of contiguous mem-
----                 ory beginning at 0000 - BFFF in either the
                     continuous or single pass mode.  The test
                     loads at C900 and is approximately 256
                     bytes long.  Typing "C" in the beginning
                     sets the continuous mode which will run un-
                     til the "escape" key is depressed. The test
                     will print a pattern of "G" or "X" as in
                     all the other memory tests.


DMARD:               This test will do DMA reads from the mem-
------               ory onto the disk and uses PTDOS.  The
                     program loads at BCC0 and is approximately
                     400 bytes long.  The memory from which the
                     test reads is determined by the first and
                     second parameters when typing the test name
                     from PTDOS.  For example:
    
                                 DMARD 0,7   <CR>
    
                      will do a DMA read from 0000 to 7FFF in 4K
                      blocks to the disk.  Each 4K block of mem-
                      ory is read 9 times.  A bad read will be
                      indicated by an error message and the user
                      has the option in the beginning to either
                      stop on an error or continue on an error.
                      The test will terminate when the "Mode Se-
                      lect" key is depressed.
    
                             -1-
    







DMAWR:                This test will do DMA writes into memory
------                from the disk using PTDOS.  The program
                      loads at BCC0 and is approximately 400
                      bytes long.  The memory which will be test
                      ed is specified by the parameters used
                      when typing the file name from PTDOS.  For
                      example:

                                 DMAWR 0, 7

                      will do a DMA write into memory locations
                      0000 - 7FFF in 4K increments writing to
                      each block a total of 9 times.  The test
                      will either stop on eroors or continue on
                      errors but in either case will report the
                      failure.  Pressing the "Mode Select" key
                      will return the user to PTDOS.



SOLT:                 This test loads at memory location E000
-----                 and is approximately 5K long.  With this
                      test it is possible to verify the correct
                      operation of the Sol ports.  Various tests
                      are available from the menu which comes up
                      when the test is executed by typing the ap
                      propriate letter.
    
    
DOST:                 This test is an example of a PTDOS "DO
-----                 Macro" which is used to test the Sol Sys-
                      tem III and the PTDOS disk commands.  The
                      test can be written into the START.UP file
                      where it will execute continuously.  By
                      editing the file, the user can observe the
                      different commands being used.  The other
                      way to use this test in single pass mode
                      is to type "DO DOST".  The only errors re-
                      ported will be PTDOS errors since this
                      test runs under PTDOS control.
    

DISKT:                This program is the DISK diagnaostic pro-
------                gram detailed in the Service and Mainte-
                      nance Manual and the HELIOS manual.  The
                      test is located from 0000 - 2FFF and uses
                      3000 - 3FFF as its buffer.  The program is
                      execuated at location 0003.


DISKCHK:              This test is a PTDOS command file.  By
--------              typing the name "DISKCHK" PTDOS compares
                      every file on the disk to the directory to
                      insure the file structures are correct.
                      This test does not say the Data within the
                      file is correct but the file integrity is
                      OK.  Any errors here will be reported as
                      PTDOS errors.  This program will give mem-
                      ory overflow errors on large programs if
                      the buffer is not set low enough.  It is
                      a quick way to check whether a disk is bad
                      or good and is not really a diagnostic
                      tool.

                            -2-








SIMU:                 This program is to be used in conjunc-
-----                 tion with the Alignment section of the
                      Service and Maintenance manual.  The
                      program loads at 0000 - 1FFF and executes
                      at 0.  Basically the program is meant to
                      exercise the drive hardware during disk
                      alignment and simulates in software the
                      PERSCI drive exerciser.  SIMU command mode
                      is designated by an asterisk and the
                      "ESCAPE" key returns the user to SOLOS.


MEMTS:  not finished  This program is revision 2.0 of Eric A.
------                Dorn's memory test it will be loaded at
                      C900 and executed there.  It will get its
                      parameters from the user.  Size and delay.