Programmer 7500/MAX_PROGRAMMERS.iso/INFO/ASMUTL/PC370.ZIP/HISTORY.DOC

Text File | 1987-05-25 | 13.9 KB | 277 lines

 TITLE 'PC/370 release history'

     MMS/370 R1.0 12/28/81 first beta test demo for Z80 CP/M-80

         Successful demo program assembly, link, and execute
         completed on the following systems:

           1.  Radio Shack Model II with Lifeboat CP/M  v2.2.
           2.  Cromemco system with Tarbell CP/M  v1.4.

     MMS/370 R1.1 01/04/82 first Distributor evaluation version
                           sent to Lifeboat

     MMS/370 R1.2 12/20/82 second beta test

     MMS/370 R1.3 02/12/83 first user release

     A370
        1.  Add XREAD, XPRNT, XDECI, XDECO, XFILI, XFILO, XDUMP
        2.  Fix location 0 overlay processing missing END.
        3.  Force E22 length error for 0 length program.
     L370
        1.  Force E08 memory error for 0 length segment.
        2.  Fix incorrect SEARCH return code due to DEQ.
        3.  Fix ORG error at end if no literals.
        4.  Fix bad stack address at program entry with option G.
        5.  Fix object code error when control Z is first byte of
            physical block in concatenated object file.
        6.  Allow alternate disk drive A for L370.LIB if not found
            on specified drive for object file.
     E370
        1.  Add ASSIST support plus interactive debug log option.
        2.  Add 370 instruction trace and instruction address stop.
        3.  Add 370 address protection for CP/M and E370 areas.

     MMS/370 R2.2 05/04/83 second user release with new XA extensions

     A370
       1.  27 new instructions added including BAS, BASR, MVCIN,
           BSM, and BASSM.
       2.  Fix made to handle explicit 256 byte SS instructions
           correctly.
       3.  Fix DC logic to surpress duplicate references to *.
       4.  FIX SVC interface to save IX and IY for NEC PC MSDOS.
     L370
       1.  Fix stack pointer for execution for option G to prevent
           initial call from storing address in program area.  Also
           changed call in prefix to simple jump to emulator entry.
     E370
       1.  5 new non-privileged instructions supported along with
           PSW address mode bit 17.
       2.  The existing instructions LA, BAL, BALR, EDMK, and TRT
           all have been modified to function correctly in both
           24 and 31 bit addressing modes.
       3.  Fix incorrect instruction length code in BAL 24 bit
           mode .
       4.  Fix incorrect EDMK address for single byte PD fields.
       5.  Fix incorrect SS instruction processing when length is
           over 128.
       6.  Fix fixed point multiply and divided overflow when
           result is negative.
       7.  Fix sign of remainder for fixed and packed divide.
       8.  Fix packed decimal compare for negative zero.
       9.  Fix condition codes for multiply and divide exceptions.
      10.  Fix Assist XREAD to correctly support 1 byte area.
      11.  Fix arithmetic shift left overflow logic.
      12.  Fix packed decimal divide to correctly detect overflow.

    MMS/370 R2.3 06/30/83 third user release with updated XA extensions

     A370
       1.  Add IPM and other new XA supervisor instructions
     L370
     E370
       1.  Add IPM instruction
       2.  Change XA mode PSW bit to 32 and display extended mode PSW
           when in XA mode.
       3.  Correct BSM logic to skip save when first register is 0.
       4.  Add option to update 370 registers to MMDBUG command Y.
       5.  Reduce size of E370 by 500 bytes by changing logic macros
           to common subroutines for logical RR and RX instructions.

    MMS/370 R3.1 03/08/84 maintenance release with corrections

    A370
      1.  Fix error created by V type address constant referencing
          CSECT defined later in same assembly.
      2.  Fix length attribute of CSECT/DSECT to always be 1.
    L370
    E370
      1.  Fix error in XR and X exclusive OR logic introduced in R2.3
          when logic was combined in 1 routine to save memory.
      2.  Fix DP overflow logic to cause divide exception 0CB instead
          of divide overflow.  Note divide exception cannot be masked
          like overflow but SPIE can be used to handle it.
      3.  Check for interrupt every 256 instructions even in kill mode.
      4.  Only trace IFL entries in 370 mode for N command.
      5.  Fix NODBUG minimum storage replacement module for MMDBUG to
          correctly NOP 370 TRACE calls.

    PC/370 R1.0 06/08/85 first freeware release for 8086 MSDOS systems

    A370
    L370
      1.  Force option F to always dynamically load E370.EXE. The emulator
          can no longer be linked with 370 code since L370 does not process
          native 8086 assembler object code format.
    E370
      1.  Add SVC's 17-22 to handle extended MSDOS functions such as time.

    PC/370 R1.1 11/11/85 maintenance release

    A370
      1.  Allow lower case command line.
      2.  Fix error for zero length data in DC for alignment.
    L370
      1.  Allow lower case command line.
    E370
      1.  Allow lower case debug command entry.
      2.  Initialize register 13 to standard save area.
      3.  Support 370 instruction address reset via J command.
      4.  Only stop at IFL trace in 370 address stop mode.
      5.  Attempt to close all files when exiting via <esc> command.
    DOC
      1.  Add documentation files describing trace id points.

    PC/370 R1.2 07/18/86 maintenance release plus SEE editor utility

    A370
      1.  Drop form feed on first page heading.
      2.  Translate lower case ASCII comments to upper case.
      3.  Align column headings for cross reference and repeat headings.
      4.  Fix error when DC F coded without data - now issues error.
      5.  Rearrange opening of files in pass 2 to insure that no more
          memory is required in pass 2 than in pass 1.  This allows
          number of symbols to directly determine maximum assembly
          possible (SEE is within 30 symbols of maximum now).  Note debug
          was removed from A370 (8k) to provide more symbol space.  Also
          note in pass 2, ALC file buffer will be smaller to provide
          room for object and print file buffers if necessary to not
          exceed pass 1 memory usage.
      6.  Tighten TITLE syntax to require correct leading quote.
    L370
      1.  Drop form feed on first page heading.
      2.  Align column headings with data lines.
      3.  Correct bug causing CSECT reference labels to be truncated.
    E370
      1.  Correct bug in XDECI ASSIST instruction to correctly input
          negative numbers.
      2.  Translate DDNAME to ASCII for SEARCH and DELETE SVC's.
      3.  Reverse DMAS, DMAE, BLKE addresses during OPEN/CLOSE along
          with EODAD and SYNAD addresses to support user defined buffer.
      4.  Change debug trace to only trace first ID after IFL in 370 mode.
      5.  Support trace ID's IOF and ION to turn interrupts off and on.
      6.  Fix bug in IOS get text record routine which caused premature
          end of file when DCB was within 128 bytes of buffer area due to
          uninitialized register picking up DCB address instead of DMA
          address during pending EOF processing.
      7.  Fix bug in IOS random write routine to increment block pointer
          when writing blocks larger than 128 bytes.
      8.  Change debug to not kill SVC 9 trace entries from 370 code.
      9.  Add SVC 23 to perform RENAME using DCB with EBCDIC names.
          (See SEE.ALC for example use and IHADCB extensions.)
     10.  Add SVC 24 to microcode printing line of ASCII text on screen
          with attribute colors. (used to more than double SEE speed).
     11.  Fix memory management to not allocate from last FQE unless there
          is room for a remaining smaller FQE pointer.  Force end of memory
          at x'FF00' to leave room for stack.
     12.  Support S save/unsave debug command to protect current trace ID
          while running in kill mode.  (very useful to obtain high speed
          execution up to selected point in program).
     13.  Save 8086 flags in high R0 for BIOS SVC's such as KEYBOARD.
     14.  Add explicit EBCDIC/ASCII translation and line control options
          to SVC's 0-24 via high bits of R2:
            bit 0 - explicit control if on, else use option E
            bit 1 - force EBCDIC translation if on, else use ASCII
            bit 2 - force addition of line control, else none

            (For example ICM R2,8,=X'80' would force no translation and
             no line control regardless of option E setting.)
     15.  Fix debug N trace listing to translate SVC 9 EBCDIC Id's.

     DOC
      1.  Add SEE.ALC source code utility to edit or browse an ASCII text file
          in full screen color mode.  Keystrokes are compatible with Turbo
          Pascal and PFS:WRITE.  The editor supports files up to 512k.
          SEE includes character graphics to support line drawings and
          organizational chart drawings.   SEE also supports creation of
          session keystroke file (.KSF) which can be reused to recreate
          SEE session with full screen colors and with keyboard pause and
          wait control.
      2.  Add PRINT.ALC source code utility to print source programs and
          PC370.DOC documentation file with page control.
      3.  Add information on electronic bulletin board and PC-SIG distribution
          via disk #402.
      4.  Add DW3NUM.ALC source code utility to insert line numbers on all
          non-blank lines in a Displaywrite III text document.  Numbers are
          placed in left margin and reset at beginning of each page.  This
          program serves as a model for other utilities that could be written
          to process Displaywrite III document files directly.  This utility
          squeezes file and lists file on console in the process of inserting
          line numbers.

      1.  Drop form feed on first page heading.

    PC/370 R2.0 05/16/87 major update with 512 address space support

    A370
      1.  Converted to EXE format with 64k data segment and buffer segment.
      2.  Now supports 3 times as many labels and literals.
      3.  File handle I/O with pathing much more efficient.
      4.  Fix error if DSECT's contain anything but DS instructions.
      5.  Allow references to ENTRY symbols within same module.
    L370
      1.  Converted to EXE format with 64k data segment and buffers segment.
      2.  Now supports code modules up to 50k.
      3.  File handle I/O with pathing much more efficient.
      4.  New option M creates 370 MOD file without COM prefix.
    E370
      1.  Converted to EXE format running in high 64k segment.
      2.  The standard instruction set plus ASSIST now supports
          direct addressing up to the maximum available memory
          under MS-DOS 2.0+ (512k+).
      3.  Error in one byte overlapped pack instruction corrected.
      4.  Error in BXH and BXLE with negative updated index values fixed.
      5.  Memory management now supports the full address space
          using 8 byte free queue elements (4 byte address and
          4 byte length).  ASCASF FQE chain pointer is located at
          X'118'in new address space control block.  The same
          registers for SVC 10 and 11 are used.
      6.  File management support has been rewritten using MS-DOS
          file handle I/O to support pathing and random or
          sequential access to multiple files.  Each file can
          have up to 64K buffer.  Maximum files open is
          controlled by CONFIG.SYS FILES= parameter.  See
          FILEIO.DOC and IHADCB.ALC for more information.
      7.  The interactive debug facility has been expanded to
          provide additional support for virtual address space
          separate from emulator address space.  The Z command
          determines which address space functions refer to.  The
          debug facility is included in A370 and L370 as well as
          E370.  A new "I" command added, dumps full word counter which
          is source record count in A370, logical object record in L370,
          and 370 instruction counter in E370.  Address stop on this word
          can be used to stop execution at any desired point.  However, note
          that in kill mode, the counter may be incremented more than once
          between trace ids preventing address stop on equal from triggering.
      8.  The interface between linked COM modules and the E370.EXE emulator
          has been redesigned to use the MS-DOS standard EXEC function instead
          of somewhat non-standard overlay load.  Now the first 16 bytes of each
          linked COM module contains the EXEC mainline which links to E370.EXE i
          the high 64k of available memory.  E370.EXE initializes the virtual
          address space origin 16 bytes past the beginning of the COM module wit
          executable code starting at X'210' into module or relative X'200'.
          COM mainline will abort if there is not room for COM module plus 64k
          for E370.EXE.
      9.  E370.EXE now supports SVC 25 to load any kind of file including linked
          COM files into free memory.  See SVC.DOC and ASCB.DOC.
     10.  E370.EXE now supports SVC 26 an 27 for attach and detach of COM
          370 programs which run in their own relative address spaces.
          See TEST25 series of demo programs for example.
     11.  Fix trace and PSW address of EX target instructions.

    PC/370 R2.0A 05/24/87 fixes to 2.0

    A370
      1.  EQU's preceeding first CSECT caused 0 length blank CSECT error.
    L370
    E370
      1.  Error in Freemain svc 11 when releasing block between two
          existing free blocks chained to third free block.  See TESTMM
          for verify of this fix.
      2.  I/O supervisor now takes SYNAD exit if bad RBA causes random
          read or write to fail due to pointing beyond disk capacity.
          See TESTIO for verify of this change.