TMS9918A

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Texas Instruments Video Display Processor 9918

       +----+---+-----+
  /RAS | 1  +---+  40 | XLAT2 
  /CAS | 2         39 | XLAT1
   AD7 | 3         38 | CPUCLK
   AD6 | 4         37 | GROMCLK
   AD5 | 5         36 | COMVID
   AD4 | 6         35 | EXTVDP
   AD3 | 7         34 | /RESET / SYNC
   AD2 | 8         33 | Vcc
   AD1 | 9         32 | RD0
   AD0 | 10        31 | RD1
  R /W | 11        30 | RD2
   Vss | 12        29 | RD3
  MODE | 13        28 | RD4
  /CSW | 14        27 | RD5
  /CSR | 15        26 | RD6
  /INT | 16        25 | RD7
   CD7 | 17        24 | CD0
   CD6 | 18        23 | CD1
   CD5 | 19        22 | CD2
   CD4 | 20        21 | CD3
       +--------------+

Datasheet

TMS9918A / 9928A / 9929A