ADDRESS-000
      LABEL-
INSTRUCTION-
   OPERAND1-
   OPERAND2-
    COMMENT-;================================================================
    ADDRESS-000
      LABEL-
INSTRUCTION-
   OPERAND1-
   OPERAND2-
    COMMENT-; Port address definitions...
    ADDRESS-000
      LABEL-
INSTRUCTION-
   OPERAND1-
   OPERAND2-
    COMMENT-;================================================================
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-switch_in
   OPERAND2-00
    COMMENT-; Switch read port
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-leds_out
   OPERAND2-01
    COMMENT-; LED write port
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-uart_data_rx
   OPERAND2-02
    COMMENT-; UART receive read port
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-uart_data_tx
   OPERAND2-03
    COMMENT-; UART transmit write port
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-data_present
   OPERAND2-04
    COMMENT-; UART stat read port, lsb
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-buffer_full
   OPERAND2-05
    COMMENT-; UART stat read port, lsb
    ADDRESS-000
      LABEL-
INSTRUCTION-
   OPERAND1-
   OPERAND2-
    COMMENT-;================================================================
    ADDRESS-000
      LABEL-
INSTRUCTION-
   OPERAND1-
   OPERAND2-
    COMMENT-; Useful constant declarations...
    ADDRESS-000
      LABEL-
INSTRUCTION-
   OPERAND1-
   OPERAND2-
    COMMENT-;================================================================
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-all_clear
   OPERAND2-00
    COMMENT-; define zero
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_NUL
   OPERAND2-00
    COMMENT-; ascii code (null character)
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_SOH
   OPERAND2-01
    COMMENT-; ascii code (start of header)
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_STX
   OPERAND2-02
    COMMENT-; ascii code (start of text)
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_ETX
   OPERAND2-03
    COMMENT-; ascii code (end of text)
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_EOT
   OPERAND2-04
    COMMENT-; ascii code (end of xmit)
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_ENQ
   OPERAND2-05
    COMMENT-; ascii code (enquiry)
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_ACK
   OPERAND2-06
    COMMENT-; ascii code (acknowledge)
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_BEL
   OPERAND2-07
    COMMENT-; ascii code (bell)
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_BS
   OPERAND2-08
    COMMENT-; ascii code (backspace)
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_HT
   OPERAND2-09
    COMMENT-; ascii code (horiz tab)
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_LF
   OPERAND2-0A
    COMMENT-; ascii code (line feed)
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_VT
   OPERAND2-0B
    COMMENT-; ascii code (vert tab)
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_FF
   OPERAND2-0C
    COMMENT-; ascii code (form feed)
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_CR
   OPERAND2-0D
    COMMENT-; ascii code (carriage return)
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_SO
   OPERAND2-0E
    COMMENT-; ascii code (shift out)
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_SI
   OPERAND2-0F
    COMMENT-; ascii code (shift in)
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_DLE
   OPERAND2-10
    COMMENT-; ascii code (data link esc)
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_DC1
   OPERAND2-11
    COMMENT-; ascii code (device ctrl 1, xon)
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_DC2
   OPERAND2-12
    COMMENT-; ascii code (device ctrl 2)
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_DC3
   OPERAND2-13
    COMMENT-; ascii code (device ctrl 3, xoff)
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_DC4
   OPERAND2-14
    COMMENT-; ascii code (device ctrl 4)
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_NAK
   OPERAND2-15
    COMMENT-; ascii code (negative acknowledge)
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_SYN
   OPERAND2-16
    COMMENT-; ascii code (sync idle)
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_ETB
   OPERAND2-17
    COMMENT-; ascii code (end xmit block)
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_CAN
   OPERAND2-18
    COMMENT-; ascii code (cancel)
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_EM
   OPERAND2-19
    COMMENT-; ascii code (end of medium)
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_SUB
   OPERAND2-1A
    COMMENT-; ascii code (substitute)
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_ESC
   OPERAND2-1B
    COMMENT-; ascii code (escape)
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_FS
   OPERAND2-1C
    COMMENT-; ascii code (file separator)
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_GS
   OPERAND2-1D
    COMMENT-; ascii code (group separator)
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_RS
   OPERAND2-1E
    COMMENT-; ascii code (record separator)
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_US
   OPERAND2-1F
    COMMENT-; ascii code (unit space)
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_SPACE
   OPERAND2-20
    COMMENT-; ascii code
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_EXCLAIM
   OPERAND2-21
    COMMENT-; ascii code
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_DBLQUOT
   OPERAND2-22
    COMMENT-; ascii code
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_NUMSIGN
   OPERAND2-23
    COMMENT-; ascii code
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_DOLLAR
   OPERAND2-24
    COMMENT-; ascii code
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_PERCENT
   OPERAND2-25
    COMMENT-; ascii code
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_AMP
   OPERAND2-26
    COMMENT-; ascii code
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_SINQUOT
   OPERAND2-27
    COMMENT-; ascii code
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_LPAREN
   OPERAND2-28
    COMMENT-; ascii code
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_RPAREN
   OPERAND2-29
    COMMENT-; ascii code
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_ASTERISK
   OPERAND2-2A
    COMMENT-; ascii code
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_PLUS
   OPERAND2-2B
    COMMENT-; ascii code
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_COMMA
   OPERAND2-2C
    COMMENT-; ascii code
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_MINUS
   OPERAND2-2D
    COMMENT-; ascii code
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_PERIOD
   OPERAND2-2E
    COMMENT-; ascii code
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_FWDSLASH
   OPERAND2-2F
    COMMENT-; ascii code
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_0
   OPERAND2-30
    COMMENT-; ascii code
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_1
   OPERAND2-31
    COMMENT-; ascii code
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_2
   OPERAND2-32
    COMMENT-; ascii code
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_3
   OPERAND2-33
    COMMENT-; ascii code
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_4
   OPERAND2-34
    COMMENT-; ascii code
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_5
   OPERAND2-35
    COMMENT-; ascii code
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_6
   OPERAND2-36
    COMMENT-; ascii code
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_7
   OPERAND2-37
    COMMENT-; ascii code
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_8
   OPERAND2-38
    COMMENT-; ascii code
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_9
   OPERAND2-39
    COMMENT-; ascii code
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_COLON
   OPERAND2-3A
    COMMENT-; ascii code
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_SEMI
   OPERAND2-3B
    COMMENT-; ascii code
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_LESS
   OPERAND2-3C
    COMMENT-; ascii code
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_EQUAL
   OPERAND2-3D
    COMMENT-; ascii code
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_GREATER
   OPERAND2-3E
    COMMENT-; ascii code
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_QUESTION
   OPERAND2-3F
    COMMENT-; ascii code
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_CIRCAT
   OPERAND2-40
    COMMENT-; ascii code
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_A
   OPERAND2-41
    COMMENT-; ascii code
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_B
   OPERAND2-42
    COMMENT-; ascii code
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_C
   OPERAND2-43
    COMMENT-; ascii code
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_D
   OPERAND2-44
    COMMENT-; ascii code
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_E
   OPERAND2-45
    COMMENT-; ascii code
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_F
   OPERAND2-46
    COMMENT-; ascii code
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_G
   OPERAND2-47
    COMMENT-; ascii code
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_H
   OPERAND2-48
    COMMENT-; ascii code
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_I
   OPERAND2-49
    COMMENT-; ascii code
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_J
   OPERAND2-4A
    COMMENT-; ascii code
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_K
   OPERAND2-4B
    COMMENT-; ascii code
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_L
   OPERAND2-4C
    COMMENT-; ascii code
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_M
   OPERAND2-4D
    COMMENT-; ascii code
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_N
   OPERAND2-4E
    COMMENT-; ascii code
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_O
   OPERAND2-4F
    COMMENT-; ascii code
    ADDRESS-000
      LABEL-
INSTRUCTION-CONSTANT
   OPERAND1-ascii_P