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MOVEM.X68
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788 lines (557 loc) · 12.1 KB
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*------------------------------------------------------------------------------
* Title : MOVEM
* Description: Handles parsing of MOVEM.
*------------------------------------------------------------------------------
ORG $4140
IF_MOVEM
MOVE.W A4,D3
AND.W #$FC80,D3
CMP.W #$4880,D3
BEQ IF_MOVEM_TO_ADDRESS
CMP.W #$4C80,D3
BEQ IF_MOVEM_TO_REGISTER
BRA IF_INVALID_OP
IF_MOVEM_TO_REGISTER
LEA MOVEM_OUTPUT,A1
MOVE.B #14,D0
TRAP #15
MOVE.W A4,D3
AND.W #$0040,D3
CMP.W #$0040,D3
BEQ LONG_FOR_TO_REGISTER
BRA WORD_FOR_TO_REGISTER
WORD_FOR_TO_REGISTER
LEA W_OUTPUT,A1
MOVE.B #14,D0
TRAP #15
ADDQ #2,A2
MOVE.W (A2),A5
BSR DISPLAY_EA_TO_REGISTER
MOVE.B #COMMA,D1
MOVE.B #6,D0
TRAP #15
MOVE.L #0,A6
MOVE.W A5,D3
MOVE.W A5,D4
CMP.L #0,D3
BEQ IF_INVALID_MASK
BSR LOAD_PARSE_MASK
BRA ITERATE
LONG_FOR_TO_REGISTER
LEA L_OUTPUT,A1
MOVE.B #14,D0
TRAP #15
ADDQ #2,A2
MOVE.W (A2),A5
BSR DISPLAY_EA_TO_REGISTER
MOVE.B #COMMA,D1
MOVE.B #6,D0
TRAP #15
MOVE.L #0,A6
MOVE.W A5,D3
MOVE.W A5,D4
CMP.L #0,D3
BEQ IF_INVALID_MASK
BSR LOAD_PARSE_MASK
BRA ITERATE
DISPLAY_EA_TO_REGISTER
MOVE.W A4,D3
AND.W #$003A,D3
LSR.L #3,D3
MOVE.W A4,D4
AND.W #$0007,D4
CMP.W #%010,D3
BEQ DISPLAY_An_ADDRESS_ea
CMP.W #%011,D3
BEQ DISPLAY_An_ADDRESS_INCREMENT_ea
CMP.W #%111,D3
BEQ GET_WORD_OR_LONG
BRA IF_INVALID_OP_EA
PARSE_MASK
CMP.L #16,A6
BEQ END_PARSER
AND.L #$00000001,D3
CMP.W #%1,D3
BEQ DISPLAY_REG
BRA ITERATE_MASK
END_PARSER
RTS
DISPLAY_REG
CMP.W #$0,A6
BEQ DISPLAY_D0
CMP.W #$1,A6
BEQ DISPLAY_D1
CMP.W #$2,A6
BEQ DISPLAY_D2
CMP.W #$3,A6
BEQ DISPLAY_D3
CMP.W #$4,A6
BEQ DISPLAY_D4
CMP.W #$5,A6
BEQ DISPLAY_D5
CMP.W #$6,A6
BEQ DISPLAY_D6
CMP.W #$7,A6
BEQ DISPLAY_D7
CMP.W #$8,A6
BEQ DISPLAY_A0
CMP.W #$9,A6
BEQ DISPLAY_A1
CMP.W #$A,A6
BEQ DISPLAY_A2
CMP.W #$B,A6
BEQ DISPLAY_A3
CMP.W #$C,A6
BEQ DISPLAY_A4
CMP.W #$D,A6
BEQ DISPLAY_A5
CMP.W #$E,A6
BEQ DISPLAY_A6
CMP.W #$F,A6
BEQ DISPLAY_A7
BRA IF_INVALID_MASK
DISPLAY_D0
MOVE.B #D,D1
MOVE.B #6,D0
TRAP #15
MOVE.B #16,D2
MOVE.B #15,D0
MOVE.L #0,D1
TRAP #15
BRA ITERATE_MASK
DISPLAY_D1
MOVE.B #D,D1
MOVE.B #6,D0
TRAP #15
MOVE.B #16,D2
MOVE.B #15,D0
MOVE.L #1,D1
TRAP #15
BRA ITERATE_MASK
DISPLAY_D2
MOVE.B #D,D1
MOVE.B #6,D0
TRAP #15
MOVE.B #16,D2
MOVE.B #15,D0
MOVE.L #2,D1
TRAP #15
BRA ITERATE_MASK
DISPLAY_D3
MOVE.B #D,D1
MOVE.B #6,D0
TRAP #15
MOVE.B #16,D2
MOVE.B #15,D0
MOVE.L #3,D1
TRAP #15
BRA ITERATE_MASK
DISPLAY_D4
MOVE.B #D,D1
MOVE.B #6,D0
TRAP #15
MOVE.B #16,D2
MOVE.B #15,D0
MOVE.L #4,D1
TRAP #15
BRA ITERATE_MASK
DISPLAY_D5
MOVE.B #D,D1
MOVE.B #6,D0
TRAP #15
MOVE.B #16,D2
MOVE.B #15,D0
MOVE.L #5,D1
TRAP #15
BRA ITERATE_MASK
DISPLAY_D6
MOVE.B #D,D1
MOVE.B #6,D0
TRAP #15
MOVE.B #16,D2
MOVE.B #15,D0
MOVE.L #6,D1
TRAP #15
BRA ITERATE_MASK
DISPLAY_D7
MOVE.B #D,D1
MOVE.B #6,D0
TRAP #15
MOVE.B #16,D2
MOVE.B #15,D0
MOVE.L #7,D1
TRAP #15
BRA ITERATE_MASK
DISPLAY_A0
MOVE.B #A,D1
MOVE.B #6,D0
TRAP #15
MOVE.B #16,D2
MOVE.B #15,D0
MOVE.L #0,D1
TRAP #15
BRA ITERATE_MASK
DISPLAY_A1
MOVE.B #A,D1
MOVE.B #6,D0
TRAP #15
MOVE.B #16,D2
MOVE.B #15,D0
MOVE.L #1,D1
TRAP #15
BRA ITERATE_MASK
DISPLAY_A2
MOVE.B #A,D1
MOVE.B #6,D0
TRAP #15
MOVE.B #16,D2
MOVE.B #15,D0
MOVE.L #2,D1
TRAP #15
BRA ITERATE_MASK
DISPLAY_A3
MOVE.B #A,D1
MOVE.B #6,D0
TRAP #15
MOVE.B #16,D2
MOVE.B #15,D0
MOVE.L #3,D1
TRAP #15
BRA ITERATE_MASK
DISPLAY_A4
MOVE.B #A,D1
MOVE.B #6,D0
TRAP #15
MOVE.B #16,D2
MOVE.B #15,D0
MOVE.L #4,D1
TRAP #15
BRA ITERATE_MASK
DISPLAY_A5
MOVE.B #A,D1
MOVE.B #6,D0
TRAP #15
MOVE.B #16,D2
MOVE.B #15,D0
MOVE.L #5,D1
TRAP #15
BRA ITERATE_MASK
DISPLAY_A6
MOVE.B #A,D1
MOVE.B #6,D0
TRAP #15
MOVE.B #16,D2
MOVE.B #15,D0
MOVE.L #6,D1
TRAP #15
BRA ITERATE_MASK
DISPLAY_A7
MOVE.B #A,D1
MOVE.B #6,D0
TRAP #15
MOVE.B #16,D2
MOVE.B #15,D0
MOVE.L #7,D1
TRAP #15
RTS
ITERATE_MASK
ADDQ #1,A6
BSR IF_DRAW_SLASH_REGISTER
LSR.W #1,D4
LSR.W #1,D5
MOVE.W D4,D3
CMP.W #$F,A6
BGT END_PARSER
BRA PARSE_MASK
DISPLAY_EA_TO_ADDRESS
MOVE.L A4,D3
AND.L #$0000003A,D3
LSR.L #3,D3
MOVE.W A4,D4
AND.L #$00000007,D4
CMP.W #%010,D3
BEQ DISPLAY_An_ADDRESS_ea
CMP.W #%100,D3
BEQ DISPLAY_An_ADDRESS_DECREMENT_ea
CMP.W #%111,D3
BEQ GET_WORD_OR_LONG
BRA IF_INVALID_OP_EA
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
IF_MOVEM_TO_ADDRESS
MOVE.L #0,D5
LEA MOVEM_OUTPUT,A1
MOVE.B #14,D0
TRAP #15
MOVE.W A4,D3
AND.W #$0040,D3
CMP.W #$0040,D3
BEQ LONG_FOR_TO_ADDRESS
BRA WORD_FOR_TO_ADDRESS
WORD_FOR_TO_ADDRESS
LEA W_OUTPUT,A1
MOVE.B #14,D0
TRAP #15
BSR GET_MASK_ADDRESS
MOVE.B #COMMA,D1
MOVE.B #6,D0
TRAP #15
BSR DISPLAY_EA_TO_ADDRESS
BRA ITERATE
LONG_FOR_TO_ADDRESS
LEA L_OUTPUT,A1
MOVE.B #14,D0
TRAP #15
BSR GET_MASK_ADDRESS
MOVE.B #COMMA,D1
MOVE.B #6,D0
TRAP #15
BSR DISPLAY_EA_TO_ADDRESS
BRA ITERATE
GET_MASK_ADDRESS
MOVE.W A4,D3
AND.W #$0038,D3
LSR.L #3,D3
ADDQ #2,A2
MOVE.W (A2),A5
CMP.W #%100,D3
BEQ LOAD_MASK_ADDRESS
BRA LOAD_PARSE_MASK
LOAD_PARSE_MASK
MOVE.W A5,D3
MOVE.W A5,D4
MOVE.W A5,D5
LSR.W #1,D5
MOVE.L #0,A6
CMP.L #$0,D3
BEQ IF_INVALID_MASK
BRA PARSE_MASK
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
LOAD_MASK_ADDRESS
MOVE.W A5,D3
MOVE.W A5,D4
MOVE.W A5,D5
LSL.W #1,D5
MOVE.L #0,A6
CMP.L #$0,D3
BEQ IF_INVALID_MASK
BRA PARSE_MASK_ADDRESS
PARSE_MASK_ADDRESS
CMP.L #16,A6
BEQ END_PARSER
AND.L #$00008000,D3
CMP.W #$8000,D3
BEQ DISPLAY_REG_ADDRESS
BRA ITERATE_MASK_ADDRESS
DISPLAY_REG_ADDRESS
CMP.W #$0,A6
BEQ DISPLAY_D0_ADDRESS
CMP.W #$1,A6
BEQ DISPLAY_D1_ADDRESS
CMP.W #$2,A6
BEQ DISPLAY_D2_ADDRESS
CMP.W #$3,A6
BEQ DISPLAY_D3_ADDRESS
CMP.W #$4,A6
BEQ DISPLAY_D4_ADDRESS
CMP.W #$5,A6
BEQ DISPLAY_D5_ADDRESS
CMP.W #$6,A6
BEQ DISPLAY_D6_ADDRESS
CMP.W #$7,A6
BEQ DISPLAY_D7_ADDRESS
CMP.W #$8,A6
BEQ DISPLAY_A0_ADDRESS
CMP.W #$9,A6
BEQ DISPLAY_A1_ADDRESS
CMP.W #$A,A6
BEQ DISPLAY_A2_ADDRESS
CMP.W #$B,A6
BEQ DISPLAY_A3_ADDRESS
CMP.W #$C,A6
BEQ DISPLAY_A4_ADDRESS
CMP.W #$D,A6
BEQ DISPLAY_A5_ADDRESS
CMP.W #$E,A6
BEQ DISPLAY_A6_ADDRESS
CMP.W #$F,A6
BEQ DISPLAY_A7_ADDRESS
BRA IF_INVALID_MASK
DISPLAY_D0_ADDRESS
MOVE.B #D,D1
MOVE.B #6,D0
TRAP #15
MOVE.B #16,D2
MOVE.B #15,D0
MOVE.L #0,D1
TRAP #15
BRA ITERATE_MASK_ADDRESS
DISPLAY_D1_ADDRESS
MOVE.B #D,D1
MOVE.B #6,D0
TRAP #15
MOVE.B #16,D2
MOVE.B #15,D0
MOVE.L #1,D1
TRAP #15
BRA ITERATE_MASK_ADDRESS
DISPLAY_D2_ADDRESS
MOVE.B #D,D1
MOVE.B #6,D0
TRAP #15
MOVE.B #16,D2
MOVE.B #15,D0
MOVE.L #2,D1
TRAP #15
BRA ITERATE_MASK_ADDRESS
DISPLAY_D3_ADDRESS
MOVE.B #D,D1
MOVE.B #6,D0
TRAP #15
MOVE.B #16,D2
MOVE.B #15,D0
MOVE.L #3,D1
TRAP #15
BRA ITERATE_MASK_ADDRESS
DISPLAY_D4_ADDRESS
MOVE.B #D,D1
MOVE.B #6,D0
TRAP #15
MOVE.B #16,D2
MOVE.B #15,D0
MOVE.L #4,D1
TRAP #15
BRA ITERATE_MASK_ADDRESS
DISPLAY_D5_ADDRESS
MOVE.B #D,D1
MOVE.B #6,D0
TRAP #15
MOVE.B #16,D2
MOVE.B #15,D0
MOVE.L #5,D1
TRAP #15
BRA ITERATE_MASK_ADDRESS
DISPLAY_D6_ADDRESS
MOVE.B #D,D1
MOVE.B #6,D0
TRAP #15
MOVE.B #16,D2
MOVE.B #15,D0
MOVE.L #6,D1
TRAP #15
BRA ITERATE_MASK_ADDRESS
DISPLAY_D7_ADDRESS
MOVE.B #D,D1
MOVE.B #6,D0
TRAP #15
MOVE.B #16,D2
MOVE.B #15,D0
MOVE.L #7,D1
TRAP #15
BRA ITERATE_MASK_ADDRESS
DISPLAY_A0_ADDRESS
MOVE.B #A,D1
MOVE.B #6,D0
TRAP #15
MOVE.B #16,D2
MOVE.B #15,D0
MOVE.L #0,D1
TRAP #15
BRA ITERATE_MASK_ADDRESS
DISPLAY_A1_ADDRESS
MOVE.B #A,D1
MOVE.B #6,D0
TRAP #15
MOVE.B #16,D2
MOVE.B #15,D0
MOVE.L #1,D1
TRAP #15
BRA ITERATE_MASK_ADDRESS
DISPLAY_A2_ADDRESS
MOVE.B #A,D1
MOVE.B #6,D0
TRAP #15
MOVE.B #16,D2
MOVE.B #15,D0
MOVE.L #2,D1
TRAP #15
BRA ITERATE_MASK_ADDRESS
DISPLAY_A3_ADDRESS
MOVE.B #A,D1
MOVE.B #6,D0
TRAP #15
MOVE.B #16,D2
MOVE.B #15,D0
MOVE.L #3,D1
TRAP #15
BRA ITERATE_MASK_ADDRESS
DISPLAY_A4_ADDRESS
MOVE.B #A,D1
MOVE.B #6,D0
TRAP #15
MOVE.B #16,D2
MOVE.B #15,D0
MOVE.L #4,D1
TRAP #15
BRA ITERATE_MASK_ADDRESS
DISPLAY_A5_ADDRESS
MOVE.B #A,D1
MOVE.B #6,D0
TRAP #15
MOVE.B #16,D2
MOVE.B #15,D0
MOVE.L #5,D1
TRAP #15
BRA ITERATE_MASK_ADDRESS
DISPLAY_A6_ADDRESS
MOVE.B #A,D1
MOVE.B #6,D0
TRAP #15
MOVE.B #16,D2
MOVE.B #15,D0
MOVE.L #6,D1
TRAP #15
BRA ITERATE_MASK_ADDRESS
DISPLAY_A7_ADDRESS
MOVE.B #A,D1
MOVE.B #6,D0
TRAP #15
MOVE.B #16,D2
MOVE.B #15,D0
MOVE.L #7,D1
TRAP #15
RTS
ITERATE_MASK_ADDRESS
ADDQ #1,A6
BSR IF_DRAW_SLASH_ADDRESS
LSL.L #1,D4
LSL.W #1,D5
MOVE.W D4,D3
CMP.W #$F,A6
BGT END_PARSER
BRA PARSE_MASK_ADDRESS
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
IF_DRAW_SLASH_ADDRESS
CMP.W #0,D5
BNE IF_DRAW_SLASH_2_ADDRESS
RTS
IF_DRAW_SLASH_2_ADDRESS
CMP.W #$8000,D3
BEQ DRAW_SLASH
RTS
IF_DRAW_SLASH_REGISTER
CMP.W #0,D3
BNE IF_DRAW_SLASH_2_REGISTER
RTS
IF_DRAW_SLASH_2_REGISTER
CMP.L #0,D5
BGT DRAW_SLASH
RTS
DRAW_SLASH
MOVE.B #SLASH,D1
MOVE.B #6,D0
TRAP #15
RTS
*~Font name~Courier New~
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