Commodore Amiga A500 - Page 49

TABLE 3-4
PAL2011 0
TESTRAM
9-1 1-85
COMMODORE-AMIGA
/ASQ IASQQ RD /BDSEL /BERR A6 A5 A4 A3 A2
A1 GND /RE BD1 2 BD1 3 BD14 BD1 5 IPRECON /CONOUT ISHUTUP
IRAMOE NVP /DBOE VCC
DBOE
= /RES*BDSEL*/BERR*/SHUTUP*/RD +
/RES*BDSEL*IBERR*SHUTUP* RD*ASQ
RAMOE = /RES*ASQ*RD*CONOUT*/BERR*BDSEL
SHUTUP = /RES*BDSEL*/RD*ASQ*/CONOUT*A6*/A5*/A4*A3*A2 +
/RES*SHUTUP
PRECON = /RES*SHUTUP +
/RES*/RD*BDSEL*ASQQ*A6*/AWAD*A3*/A2*/Al +
/RES*PRECON
;WRITES TURN ON
EARLY
@Q DELAYS THE READ
DESCRIPTION