PAL20R4A
PAT1031
NS32081 IN ABC1600                                          1985-02-12/\L
                                      (FUNCTION TABLE       1985-02-17/\L)
CLK   A2    A1    A0    FC1   FC2   A19   A18   A17   A16   A15   GND
OE'   AS'   D0    LBE'  DONE' ESPC' C0'   C1'   SPC'  HBE'  R     VCC


IF(VCC)    /HBE' =  FC2 */FC1 */AS' * R   * A19 */A18 */A17 */A16 */A15
                        * A2  */A1  */A0

IF(VCC)    /LBE' =  FC2 */FC1 */AS' * R   * A19 */A18 */A17 */A16 */A15
                        * A2  */A1  * A0

           /C1' := /C0'

           /C0' :=  FC2 */FC1 */AS' */R   * A19 */A18 */A17 */A16 */A15
                        * A2  * A1  * A0  * C1'
                 +  FC2 */FC1 */AS' * R   * A19 */A18 */A17 */A16 */A15
                        * A2  */A1  */A0  * C1'

         /ESPC' :=  FC2 */FC1 */AS' */R   * A19 */A18 */A17 */A16 */A15
                        * A2  * A1  * A0  * C1'
                 +  FC2 */FC1 */AS' * R   * A19 */A18 */A17 */A16 */A15
                        * A2  */A1  */A0
                 + /ESPC'*/C0'* C1'
                 + /ESPC'*/C0'* R

         /DONE' :=  ESPC'*/SPC'
                 +  ESPC'*/DONE'
                 +  A1   */DONE'

IF(FC2*/FC1*/AS'*R*A19*/A18*/A17*/A16*/A15*A2*A1*/A0) /D0 =  DONE'

IF(/ESPC') /SPC' = /C0' * C1' */R
                 + /C0' * R

FUNCTION TABLE:

OE' FC2 FC1 A19 A18 A17 A16 A15 A2 A1 A0 AS' R CLK
SPC' ESPC' C1' C0' DONE' D0 HBE' LBE'

;                     E  D
;  FF AAAAA       C  SS  O HL
;O CC 11111 AAA A L  PPCCNDBB
;E 21 98765 210 SRK  CC10E0EE
;'              '    ''''' ''
-----------------------------
; INIT
 H LL LLLLL LLL HHC  XZZZZZHH
 L LL LLLLL LLL HHC  HXXHXZHH
 L LL LLLLL LLL HHC  HHHHXZHH
; READ CYCLE
 L HL HLLLL HLL LHC  LLHLXZLH
 L HL HLLLL HLL LHC  LLLLHZLH
 L HL HLLLL HLL LHC  HLLHHZLH
 L HL HLLLL HLL HHC  HHHHHZHH
 L HL HLLLL HLH LHC  HHHHHZHL
 L HL HLLLL HLH HHC  HHHHHZHH
; NO OP TESTS
 L HL HLLLL HLL LLC  HHHHHZHH
 L HL HLLLL HLH LLC  HHHHHZHH
 L HL HLLLL HHH LHC  HHHHHZHH
 L HL HLLLL LLL LHC  HHHHHZHH
 L HL HLLLL LLH LHC  HHHHHZHH
 L HL HLLLH HLL LHC  HHHHHZHH
 L HL HLLLH HLH LHC  HHHHHZHH
 L HL HLLHL HLL LHC  HHHHHZHH
 L HL HLLHL HLH LHC  HHHHHZHH
 L HL HLHLL HLL LHC  HHHHHZHH
 L HL HLHLL HLH LHC  HHHHHZHH
 L HL HHLLL HLL LHC  HHHHHZHH
 L HL HHLLL HLH LHC  HHHHHZHH
 L HL LLLLL HLL LHC  HHHHHZHH
 L HL LLLLL HLH LHC  HHHHHZHH
 L HH HLLLL HLL LHC  HHHHHZHH
 L HH HLLLL HLH LHC  HHHHHZHH
 L LL HLLLL HLL LHC  HHHHHZHH
 L LL HLLLL HLH LHC  HHHHHZHH
 L HL HLLLL HHH LHC  HHHHHZHH
 L HL HLLLL HHL LLC  HHHHHZHH
 L HL HLLLL HLH LLC  HHHHHZHH
 L HL HLLLL LHH LLC  HHHHHZHH
 L HL HLLLH HHH LLC  HHHHHZHH
 L HL HLLHL HHH LLC  HHHHHZHH
 L HL HLHLL HHH LLC  HHHHHZHH
 L HL HHLLL HHH LLC  HHHHHZHH
 L HL LLLLL HHH LLC  HHHHHZHH
 L HH HLLLL HHH LLC  HHHHHZHH
 L LL HLLLL HHH LLC  HHHHHZHH
; READ DONE
 L HL HLLLL HHL LHC  HHHHHLHH
; SPC PULSE (=DONE)
 L HL HLLLL HHL HHC  LHHHLZHH
; WRITE CYCLE
 L HL HLLLL HHL LLC  HHHHLZHH
 L HL HLLLL HHL HLC  HHHHLZHH
 L HL HLLLL HHH LLC  LLHLLZHH
 L HL HLLLL HHH LLC  HLLLLZHH
 L HL HLLLL HHH LLC  HHLHLZHH
 L HL HLLLL HHH HLC  HHHHLZHH
; READ DONE
 L HL HLLLL HHL LHC  HHHHLHHH
; READ CYCLE
 L HL HLLLL HLL LHC  LLHLLZLH
 L HL HLLLL HLL LHC  LLLLHZLH
 L HL HLLLL HLL LHC  HLLHHZLH
 L HL HLLLL HLL HHC  HHHHHZHH
 L HL HLLLL HLH LHC  HHHHHZHL
 L HL HLLLL HLH HHC  HHHHHZHH
-----------------------------

DESCRIPTION: Done cleared on next read operation.
Operation    Size  Address  Addr. Space
readxfer     word   80014   system data
writexfer    word   80016   system data
readstatus   word   80024   system data
writeID      word   80036   system data
readDONE     byte   80006   system data