name: 74AS890 function: MicroSequencer package: DIP,64 manufacturer: TI added-by: Long John Silicon comment: Works in conjunction with Processor-Slice (AS888/AS889) +--()--+ RAOE! | 1 64| DRA7 DRA6 | 2 63| DRA8 DRA5 | 3 62| DRA9 DRA4 | 4 61| DRA10 DRA3 | 5 60| DRA11 DRA2 | 6 59| DRA12 DRA1 | 7 58| DRA13 DRA0 | 8 57| INC OSEL | 9 56| Y0 MUX0 |10 55| Y1 MUX1 |11 54| Y2 MUX2 |12 53| Y3 RC0 |13 52| Y4 RC1 |14 51| Y5 RC2 |15 50| Y6 S0 |16 49| YOE! S1 |17 48| Y7 S2 |18 47| GND CC! |19 46| Y8 VCC1 |20 45| Y9 VCC2 |21 44| Y10 CK |22 43| Y11 ZERO |23 42| Y12 STKWRN/RER |24 41| Y13 DRB0 |25 40| INT! DRB1 |26 39| DRB13 DRB2 |27 38| DRB12 DRB3 |28 37| DRB11 DRB4 |29 36| DRB10 DRB5 |30 35| DRB9 DRB6 |31 34| DRB8 RBOE! |32 33| DRB7 +------+ This information was added by a third party and may be incorrect. This pinout came from the Chipdir: http://www.chipdir.org/