8.2.15 TT Serie SCU

Atari TT/MegaSTe SCU Controller

TT Serie SCU 84 Pin SMD (TT/MegaSTe only)


 Pin          Signal       Typ      Beschreibung
 _______________________________________________________________________________

 1            IOCS1-
 2            IOCS2-
 3            MFP2-
 4            MFP1-
 5            FPU-
 6            DSACK1-
 7            BERR-
 8            SIZ1
 9            SIZ0
 10           CLKIN        Input    Takt 16 Mhz vom Mainboard

 11,53,74     Vdo          Input    +5 Versorgungsspannung

 12,33        Vss          Input    GND, Signalmasse

 13           AS-
 14           DS-
 15           R/W-

 16-31        A0-A15       I/O      Adressleitungen CPU Bus

 32           POR-

 34-49        A16-A31      I/O      Adressleitungen CPU Bus

 50-52        FC0-FC2

 55-62        D0-D7        I/O      Datenleitungen CPU Bus

 63-65        IPL0-IPL2

 66           SIRQ-
 67           SYSI-

 68-70        SIR5-SIR7

 71-73        BIR1-BIR3

 75           TMC

 76-79        BIR4-BIR7

 80           HSYNC
 81           VSYNC
 82           IACK5-
 83           IACK6-
 84           AVEC-

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Custom Chips (c) Atari Corp.
Technical Data: ST ServiceGuides