!!!!    6    0    1  990118426  Vda58                                         

! Device           : 2364
! Function         : ROM 3-State 8K x 8
! revision         : B.01.00
! safeguard        : med_out_mos
! Modifications    : Modified for AwareTest xi
!
  warning           "This library has not been verified with hardware."

warning "This test was written for the Signetics '2364', a 28-pin"
warning "ROM with four chip selects.  '2364' ROMs from other manu-"
warning "facturers may have different enable functions, and some"
warning "are 24-pin devices.  This test must be modified by the"
warning "user for testing '2364' ROMs with different pin-outs."
warning ""

vector cycle  800n
receive delay 700n
!
!  Note: These values of vector cycle time and receive delay are
!    required for 450ns parts; they may be decreased for parts
!    with faster access times.

assign VCC            to pins 28
assign GND            to pins 14

assign NC             to pins 1
assign Address        to pins 2,23,21,24,25,3,4,5,6,7,8,9,10
assign Data           to pins 19,18,17,16,15,13,12,11
assign Data_D0        to pins 11   !AT Added for minimum pin test.
assign Data_D1        to pins 12   !AT Added for minimum pin test.
assign Data_D2        to pins 13   !AT Added for minimum pin test.
assign Data_D3        to pins 15   !AT Added for minimum pin test.
assign Data_D4        to pins 16   !AT Added for minimum pin test.
assign Data_D5        to pins 17   !AT Added for minimum pin test.
assign Data_D6        to pins 18   !AT Added for minimum pin test.
assign Data_D7        to pins 19   !AT Added for minimum pin test.

assign Chip_selects   to pins 26,27,22,20     ! S4,S3,S2,S1
!
warning "Since chip selects for this part are mask programmable,"
warning "this test may require modification.  All four chip select"
warning "inputs have been assumed to be programmed low-true."

family TTL

power VCC, GND

inputs    Address, Chip_selects
outputs   Data
outputs   Data_D0, Data_D1, Data_D2, Data_D3 !AT Added for minimum pin test.
outputs   Data_D4, Data_D5, Data_D6, Data_D7 !AT Added for minimum pin test.

nondigital  NC

! Note: Disable and backtrace statements may have to be modified
!   according to how the select inputs have been programmed.
!

when      Chip_selects  is   "xxx1" inactive Data
when      Chip_selects  is   "xx1x" inactive Data
when      Chip_selects  is   "x1xx" inactive Data
when      Chip_selects  is   "1xxx" inactive Data

trace Data  to Address,Chip_selects

disable   Data  with   Chip_selects   to  "xxx1"
disable   Data  with   Chip_selects   to  "xx1x"
disable   Data  with   Chip_selects   to  "x1xx"
disable   Data  with   Chip_selects   to  "1xxx"

!****************************************************************************
!****************************************************************************

vector  Lower_Address_Counter
     set  Chip_selects     to  "0000"   ! Possible modification req'd
     set  Address          to  "0000000000000"
     set  Data             to  "00000000"
     upcounter  Address
end vector

vector  Upper_Address_Counter
     set  Chip_selects     to  "0000"   ! Possible modification req'd
     set  Address          to  "1111111111111"
     set  Data             to  "00000000"
     downcounter   Address
end vector

vector  Disable_1
     set  Chip_selects     to  "0001"  ! Possible modification req'd
     set  Address          to  "0000000000000"
     set  Data             to  "11111111"
end vector

vector  Disable_2
     set  Chip_selects     to  "0010"  ! Possible modification req'd
     set  Address          to  "0000000000000"
     set  Data             to  "11111111"
end vector

vector  Disable_3
     set  Chip_selects     to  "0100"  ! Possible modification req'd
     set  Address          to  "0000000000000"
     set  Data             to  "11111111"
end vector

vector  Disable_4
     set  Chip_selects     to  "1000"  ! Possible modification req'd
     set  Address          to  "0000000000000"
     set  Data             to  "11111111"
end vector

!AT The following vectors have been added for a minimum pins test. Any
!AT vectors that references the data bus was copied and modified to reference
!AT only a single pin of the data bus.

vector  Address_Counter_D0
     set  Chip_selects     to  "0000"   ! Possible modification req'd
     set  Address          to  "0000000000000"
     set  Data_D0          to  "0"
     upcounter  Address
end vector

vector  Address_Counter_D1
     set  Chip_selects     to  "0000"   ! Possible modification req'd
     set  Address          to  "0000000000000"
     set  Data_D1          to  "0"
     upcounter  Address
end vector

vector  Address_Counter_D2
     set  Chip_selects     to  "0000"   ! Possible modification req'd
     set  Address          to  "0000000000000"
     set  Data_D2          to  "0"
     upcounter  Address
end vector

vector  Address_Counter_D3
     set  Chip_selects     to  "0000"   ! Possible modification req'd
     set  Address          to  "0000000000000"
     set  Data_D3          to  "0"
     upcounter  Address
end vector

vector  Address_Counter_D4
     set  Chip_selects     to  "0000"   ! Possible modification req'd
     set  Address          to  "0000000000000"
     set  Data_D4          to  "0"
     upcounter  Address
end vector

vector  Address_Counter_D5
     set  Chip_selects     to  "0000"   ! Possible modification req'd
     set  Address          to  "0000000000000"
     set  Data_D5          to  "0"
     upcounter  Address
end vector

vector  Address_Counter_D6
     set  Chip_selects     to  "0000"   ! Possible modification req'd
     set  Address          to  "0000000000000"
     set  Data_D6          to  "0"
     upcounter  Address
end vector

vector  Address_Counter_D7
     set  Chip_selects     to  "0000"   ! Possible modification req'd
     set  Address          to  "0000000000000"
     set  Data_D7          to  "0"
     upcounter  Address
end vector

!****************************************************************************
!****************************************************************************

!AT The following AwareTest units have been added for minimum pins tests. Each
!AT unit tests a separate data pin starting with D0.

unit "awaretest D0 Test"
     preset counter  Address_Counter_D0  compress
     repeat  255  times
          count  Address_Counter_D0      compress
     end repeat
end unit

unit "awaretest D1 Test"
     preset counter  Address_Counter_D1  compress
     repeat  255  times
          count  Address_Counter_D1      compress
     end repeat
end unit

unit "awaretest D2 Test"
     preset counter  Address_Counter_D2  compress
     repeat  255  times
          count  Address_Counter_D2      compress
     end repeat
end unit

unit "awaretest D3 Test"
     preset counter  Address_Counter_D3  compress
     repeat  255  times
          count  Address_Counter_D3      compress
     end repeat
end unit

unit "awaretest D4 Test"
     preset counter  Address_Counter_D4  compress
     repeat  255  times
          count  Address_Counter_D4      compress
     end repeat
end unit

unit "awaretest D5 Test"
     preset counter  Address_Counter_D5  compress
     repeat  255  times
          count  Address_Counter_D5      compress
     end repeat
end unit

unit "awaretest D6 Test"
     preset counter  Address_Counter_D6  compress
     repeat  255  times
          count  Address_Counter_D6      compress
     end repeat
end unit

unit "awaretest D7 Test"
     preset counter  Address_Counter_D7  compress
     repeat  255  times
          count  Address_Counter_D7      compress
     end repeat
end unit

!    ROM contents are partially verified by compressing the contents of the
!    lower 512 words and the upper 512 words and comparing the result with
!    that of a known-good board.  By modifying the loop counters, more of the
!    ROM can be tested, at the expense of greater test time.

unit  "ROM Test lower"
     preset counter  Lower_Address_Counter  compress
     repeat  511  times
          count  Lower_Address_Counter      compress
     end repeat
end unit

unit "ROM Test upper"
     preset counter  Upper_Address_Counter  compress
     repeat  511   times
          count  Upper_Address_Counter      compress
     end repeat
end unit

! The following units may be added to verify that the chip select
! inputs are not stuck true, if the following conditions exist:
!   1) The data bus has pull-up resistors on the board or fixture;
!   2) The data in the lowest address is not all 1's.
!
!unit "Disable using S1"
!     execute  Disable_1
!end unit
!
!unit "Disable using S2"
!     execute  Disable_2
!end unit
!
!unit "Disable using S3"
!     execute  Disable_3
!end unit
!
!unit "Disable using S4"
!     execute  Disable_4
!end unit

!    End of Test