Motorola M68EVB912B32, User Manual

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OPERATION
68EVB912B32UM/D 3-12
The assembly/disassembly process may be terminated by entering a period (.) as the first non-
space character following the assembler prompt.
restrictions:
None.
Table 3-2. M68HC11 to CPU12 Instruction Translation
M68HC11 Mnemonic CPU12 Instruction M68HC11 Mnemonic CPU12 Instruction
CLC ANCC # $FE INS LEAS 1, S
CLI ANCC # $EF TAP TFR A, CC
CLV ANCC # $FD TPA TFR CC, A
SEC ORCC # $01 TSX TFR S, X
SEI ORCC # $10 TSY TFR S, Y
SEV ORCC # $02 XGDX EXG D, X
ABX LEAX B, X XGDY EXG D, Y
ABY LEAY B, Y SEX R
8
, R
16
TFR R
8
, R
16
DES LEAS -1, S
example:
>ASM 800
0800 CC1000 LDD #$1000
0803 1803123401FE MOVW #$1234,$01FE
0809 0EF9800001F1 BRSET -32768,PC,$01,$0700
080F 18FF TRAP $FF
0811 183FE3 ETBL <Illegal Addr Mode> >.
>
assembly operand format:
This section describes the operand format used by the assembler when assembling CPU12
instructions. The operand format accepted by the assembler is described separately in the CPU12
Reference Manual. Rather than describe the numeric format accepted for each instruction, some
general rules are used. Exceptions and complicated operand formats are described separately.
In general, anywhere the assembler expects a numeric value in the operand field, either a decimal
or hexadecimal value may be entered. Decimal numbers are entered as signed constants having a
range of -32768 to 65535. A leading minus sign (-) indicates negative numbers, the absence of a
leading minus sign indicates a positive number. A leading plus sign (+) is not allowed.