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Text File  |  1998-10-24  |  2KB  |  37 lines
  1. DESKTOP ⑧x1k1
  2.                                 חללללללללללללללללל†
  3.                                 ´     MC6850      ´
  4.                                 ´ bit assignments ´
  5.                                 זללללללללללללללללל¶
  6.                                  Motorola Corporation 6850
  7.                                  Asynchronous Communication Interface Adaptator
  8.               םגגגגגגגגגגגגגגגגג™
  9.               ø Status Register ø    b15=interrupt requested
  10.               ø                 ø        0:no
  11.               ø                 ø        1:yes
  12.               ø                 ø    b13=overrun error
  13.               ø                 ø        0:no
  14.               ø                 ø        1:yes
  15.               ø                 ø     b9=transmit register empty
  16.               ø                 ø        0:no
  17.               ø                 ø        1:yes
  18.               ø                 ø     b8=receive register full
  19.               ø                 ø        0:no
  20.               ø                 ø        1:yes
  21.               ijגגגגגגגגגגגגגגגגגך
  22.              םגגגגגגגגגגגגגגגגגג™
  23.              ø Control Register ø    b15=interrupt when receive register full
  24.              ø                  ø        0:no
  25.              ø                  ø        1:yes
  26.              ø                  ø    b13=interrupt when transmit register empty
  27.              ø                  ø        0:no
  28.              ø                  ø        1:yes
  29.              ø                  ø  b9-b8=11:reset
  30.              ijגגגגגגגגגגגגגגגגגגך
  31.              םגגגגגגגגגגגגגגגגגג™
  32.              ø Receive Register ø b15-b8=[b7-b0]=receive register
  33.              ijגגגגגגגגגגגגגגגגגגך
  34.             םגגגגגגגגגגגגגגגגגגג™
  35.             ø Transmit Register ø b15-b8=[b7-b0]=transmit register
  36.             ijגגגגגגגגגגגגגגגגגגגך
  37.