Filename : SN54xx38_notes.txt

Applicable Files (listed in order of analysis):  

IEEE/std_logic_1164.pkg.vhd  -- 9-state logic system

STD_PACK/MISC_FUNC.vhd       -- miscellaneous functions
STD_PACK/TIME_FUNC.vhd       -- timing functions
STD_PACK/SIMFLAG_.vhd        -- simulation flag declarations
STD_PACK/SIMFLAG.vhd         -- simulation flag assignments
STD_PACK/TTL_TIMING.vhd      -- environmental derating coefficients

STD_WAVES/STANDARD/waves_system.vhd    -- describes Event Value objects
STD_WAVES/STANDARD/waves_standard.vhd  -- basic WAVES definition
STD_WAVES/LOCAL/waves_events.vhd       -- links events to logic values
STD_WAVES/STANDARD/waves_interface.vhd -- defines functions for application of
                                          input values and file input of vectors

waves_device_SN54xx00.vhd              -- test pins package
STD_WAVES/LOCAL/waves_frames.vhd       -- links event values to pin codes
STD_WAVES/STANDARD/waves_objects.vhd   -- defines functions that create slices
STD_WAVES/LOCAL/waves_utilities.vhd    -- defines functions to check responses
                                          and to output port values to a file

wgenerator_SN54xx00.vhd      -- WAVES test program
SN54xx00_timing.vhd          -- timing package
SN54xx00_TB.vhd              -- test bench entity/architecture
SN54xx00.vhd                 -- entity/architecture
SN54xx00_DIP14.vhd           -- structural entity-architecure for
                                physical package
SN54xx00_TB_CON.vhd          -- top level configuration of TEST BENCH



Revision History (by file):  



+--------------------------------------------------------------------+
| All files:                                                         |
+--------------------------------------------------------------------+
Version 2.1 updates

2-08-91  / S. Turner /
  SIMFLAG package is now in STD_PACK library
  New convention for capitalization:
    ALL CAPS :  variables, constants, functions, design units
    First_Cap:  type definitions
    all_lower:  reserved VHDL keywords

12-19-90 / G. Newell / 
  Version 1.1 created

+--------------------------------------------------------------------+
| SN54xx38.vhd                                                       |
+--------------------------------------------------------------------+
Version 2.1 updates

08-12-91    / M. Meier /
  changed library WORK to library SN54xx38

08-08-91    / M. Meier /
  changed POWER to VCC-GND

07-28-91    / S. Turner /
  moved entity-declarations & architecture-bodies into 1 file
  changed STD_PACK.LOGIC_SYSTEM to IEEE.STD_LOGIC_1164

07-16-91    / S. Turner /
  removed GENERIC_VALUES option

07-15-91    / C. Collins /
  moved comments to DIP file

07-08-91  / S. Turner /
  Changed parameter names to reflect changed in entity's generic map

07-02-91    / C. Collins /
  corrected operating conditions

2-08-91  / S. Turner /
  Added to the generic map:
    SIMFLAG parameters
  Moved notes and comments into this file (SN54xx38_notes.txt)

1-09-91  / G. Newell /
  Replaced "Filter2" with "CONVERT_TO_UX01" (same purpose)
  Added assertion warning for illegal state on POWER input
  POWER input added to sensitivity list of behavioral processes
  Output signals default to INITIAL_OUTPUTS[]

+--------------------------------------------------------------------+
| SN54xx38_timing.vhd                                                  |
+--------------------------------------------------------------------+
Version 2.1 updates

08-02-91    / S. Turner /
  fixed timing errors

07-28-91    / S. Turner /
  moved entity-declarations & architecture-bodies into 1 file

07-16-91    / S. Turner /
  removed GENERIC_VALUES option

07-02-91    / C. Collins /
  corrected prop delays

2-08-91  / S. Turner /
  Following "EIA Timing and Environmental Data Specification" guidelines to 
    calculate missing manufacturer's timing parameters
  Changed parameter names to reflect changed in entity's generic map
  Back-annotation of capacitance values occurs automatically
    when capacitances other than the default are passed in.
  All PROP_DELAYS are now multiplied by the capacitance derating factor,
    in addition to voltage and temperature factors.
  Eliminated Eflags type in favor of separate XGEN and TIMING_MESG flags
  Manufacturer's timing parameters grouped into MIN, TYP, MAX constants


+--------------------------------------------------------------------+
| SN54xx38_TB.vhd                                                      |
+--------------------------------------------------------------------+
Version 2.1 updates

08-12-91    / M. Meier /
  changed library WORK to library SN54xx38

08-08-91    / M. Meier /
  changed POWER to VCC-GND

07-31-91    / M. Meier /
  changed Output_Format from WAVES to STANDARD 

07-28-91    / S. Turner /
  changed "OUT.DAT" to "out.dat"

07-28-91    / S. Turner /
  changed "OUT.DAT" to "out.dat"
  changed STD_PACK.LOGIC_SYSTEM to IEEE.STD_LOGIC_1164
  moved entity-declarations & architecture-bodies into 1 file

07-16-91    / S. Turner /
  removed GENERIC_VALUES option

6/11/91   / S. Turner / 
  Version 2.1 created


+--------------------------------------------------------------------+
| SN54xx38_DIP14.vhd                                                   |
+--------------------------------------------------------------------+
Version 2.1 updates

08-08-91    / M. Meier /
  moved configuration specification from CON file to DIP file

08-08-91    / M. Meier /
  changed POWER to VCC-GND

07-29-91    / M. Meier /
  changed worst case tphl temperature.

07-28-91    / S. Turner /
  changed STD_PACK.LOGIC_SYSTEM to IEEE.STD_LOGIC_1164

07-16-91    / S. Turner /
  removed GENERIC_VALUES option

07-15-91    / C. Collins /
  moved comments from SN54xx33_.vhd

6/11/91   / S. Turner / 
  Version 2.1 created


+--------------------------------------------------------------------+
| SN54xx38_TB_CON.vhd                                                  |
+--------------------------------------------------------------------+
Version 2.1 updates

08-12-91    / M. Meier /
  changed library WORK to library SN54xx38

08-08-91    / M. Meier /
  moved configuration specification from CON file to DIP file

07-16-91    / S. Turner /
  removed GENERIC_VALUES option

6/11/91   / S. Turner /  Version 2.1 
  Version 2.1 created


+--------------------------------------------------------------------+
| waves_device_SN54xx38.vhd                                            |
+--------------------------------------------------------------------+
Version 2.1 updates

08-08-91    / M. Meier /
  changed POWER to VCC-GND

07-28-91    / S. Turner /
  moved entity-declarations & architecture-bodies into 1 file

6/11/91   / S. Turner / 
  Version 2.1 created


+--------------------------------------------------------------------+
| wgenerator_SN54xx38_.vhd                                             |
+--------------------------------------------------------------------+
Version 2.1 updates

08-12-91    / M. Meier /
  changed library WORK to library SN54xx38

08-08-91    / M. Meier /
  changed POWER to VCC-GND and removed POWER vectors

07-30-91    / M. Meier /
  changed 'D' to '-'

07-28-91    / S. Turner /
  moved entity-declarations & architecture-bodies into 1 file

07-16-91    / M. Meier /
  corrected test vector errors

07-12-91    / M. Meier /
  added new test vectors

6/11/91   / S. Turner / 
  Version 2.1 created
