79 lines
2.9 KiB
Plaintext
79 lines
2.9 KiB
Plaintext
;PALASM Design Description
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;---------------------------------- Declaration Segment ------------
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TITLE GW4208
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PATTERN
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REVISION Zane Kaminski
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AUTHOR Garrett's Workshop
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COMPANY 02/18/20
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DATE 02/18/20
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CHIP _GW4208 PAL22V10
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;---------------------------------- PIN Declarations ---------------
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NODE 1 GLOBAL ;
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PIN 1 /DEVSEL ;
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PIN 2 PHI1 ;
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PIN 3 A0 ;
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PIN 4 A1 ;
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PIN 5 A2 ;
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PIN 6 A3 ;
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PIN 7 A12 ;
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PIN 8 A13 ;
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PIN 9 A14 ;
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PIN 10 A15 ;
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PIN 11 /WE ;
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PIN 13 /RES ;
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PIN 14 RA16 REGISTERED ;
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PIN 15 RA15 REGISTERED ;
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PIN 16 RA14 REGISTERED ;
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PIN 18 RA12 COMBINATORIAL ;
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PIN 19 /INH COMBINATORIAL ;
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PIN 23 /RCS COMBINATORIAL ;
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PIN 20 BankAB REGISTERED ;
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PIN 21 ENRD REGISTERED ;
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PIN 22 ENWR REGISTERED ;
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PIN 17 PREWR REGISTERED ;
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;----------------------------------- Boolean Equation Segment ------
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EQUATIONS
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; Registered
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GLOBAL.RSTF = RES
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; if A2...
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RA16 = (A2 * A3) + (/A2 * RA16)
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RA15 = (A2 * A1) + (/A2 * RA15)
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RA14 = (A2 * A0) + (/A2 * RA14)
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; if /A2...
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BankAB = ( A2 * BankAB) +
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(/A2 * A3)
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ENRD = ( A2 * ENRD) +
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(/A2 * /A0 * /A1) +
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(/A2 * A0 * A1)
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PREWR = ( A2 * PREWR) +
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(/A2 * A0)
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ENWR = ( A2 * ENWR) +
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(/A2 * A0 * PREWR)
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; Combinational
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INH = A15 * A14 * A12 * ENRD * /WE +
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A15 * A14 * A13 * ENRD * /WE +
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A15 * A14 * A12 * ENWR * WE +
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A15 * A14 * A13 * ENWR * WE +
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A15 * A14 * A12 * ENRD * ENWR +
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A15 * A14 * A13 * ENRD * ENWR
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RCS = /PHI1 * A15 * A14 * A12 * ENRD * /WE +
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/PHI1 * A15 * A14 * A13 * ENRD * /WE +
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/PHI1 * A15 * A14 * A12 * ENWR * WE +
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/PHI1 * A15 * A14 * A13 * ENWR * WE +
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/PHI1 * A15 * A14 * A12 * ENRD * ENWR +
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/PHI1 * A15 * A14 * A13 * ENRD * ENWR
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RA12 = /A13 * BankAB + A13 * A12
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