Filename : SN54xx21_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

07-01-91 / C. Collins / 
  Version 2.1 created

+--------------------------------------------------------------------+
| SN54xx21.vhd                                                       |
+--------------------------------------------------------------------+
Version 2.1 updates

08-12-91    / M. Meier /
  changed library WORK to library SN54xx21

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

08-02-91    / M. Meier /
  changed local output signal type to UX01Z.

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    / C. Collins /
  added reference page comment

07-01-91  / C. Collins / 
  Version 2.1 created

+--------------------------------------------------------------------+
| SN54xx21_timing.vhd                                                |
+--------------------------------------------------------------------+
Version 2.1 updates

08-01-91    / M. Meier /
  changed order of TPHL & TPLH in Prop_Times record to be correct.

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

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

07-16-91    / S. Turner /
  removed TIMING_PARAMS declaration

07-01-91  / C. Collins / 
  Version 2.1 created

+--------------------------------------------------------------------+
| SN54xx21_TB.vhd                                                    |
+--------------------------------------------------------------------+
Version 2.1 updates

08-12-91    / M. Meier /
  changed library WORK to library SN54xx21

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 /
  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

07-01-91     / C. Collins /   
  Version 2.1 created

+--------------------------------------------------------------------+
| SN54xx21_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 /
  updated manufacturers

07-15-91    / C. Collins /
  moved comments from SN54xx21_.vhd file

07-01-91     / C. Collins /   
  Version 2.1 created

+--------------------------------------------------------------------+
| SN54xx21_TB_CON.vhd                                                |
+--------------------------------------------------------------------+
Version 2.1 updates

08-12-91    / M. Meier /
  changed library WORK to library SN54xx21

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

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

07-08-91    / C. Collins /
  changed STD_FAMILY to LS_FAMILY

07-01-91     / C. Collins /   
  Version 2.1 created

+--------------------------------------------------------------------+
| waves_device_SN54xx21.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

07-01-91     / C. Collins /   
  Version 2.1 created

+--------------------------------------------------------------------+
| wgenerator_SN54xx21_.vhd                                           |
+--------------------------------------------------------------------+
Version 2.1 updates

08-12-91    / M. Meier /
  changed library WORK to library SN54xx21

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

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

07-29-91    / M. Meier /
  added vector variable names

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

07-10-91    / C. Collins /
  deleted redundant test vectors

07-08-91    / C. Collins /
  added wavestable output

07-01-91     / C. Collins /   
  Version 2.1 created

