(the descriptions below come from the contained file, SERVICE,
 except only descriptions of programs who's source appears in
 the archive is kept here)

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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.