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https://github.com/Tolik-Trek/Estex-DSS.git
synced 2026-06-15 09:21:47 +03:00
42 lines
833 B
NASM
42 lines
833 B
NASM
; HL:IX - OFFSET POINTER
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; A - FILE MANIPULATOR
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MOVE_FP: CALL SET_FM
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RET C
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INC B
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DJNZ .B_1
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;from Start File
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; B=0
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.F_start: LD C,B
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LD D,B
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LD E,B
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JP .DO
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;
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.B_1: DJNZ .B_2
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;from Current Position
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.F_current: LD C,(IY+_sFM.F_POSITION)
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LD B,(IY+_sFM.F_POSITION+1)
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LD E,(IY+_sFM.F_POSITION+2)
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LD D,(IY+_sFM.F_POSITION+3)
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.DO: ADD IX,BC
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ADC HL,DE
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LD D,XH
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LD E,XL
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LD (IY+_sFM.F_POSITION),E
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LD (IY+_sFM.F_POSITION+1),D
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LD (IY+_sFM.F_POSITION+2),L
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LD (IY+_sFM.F_POSITION+3),H
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XOR A
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RET
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;
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.B_2: DJNZ .error
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;from End File
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.B_end: LD C,(IY + _sFM.FS_REC.F_SIZE)
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LD B,(IY + _sFM.FS_REC.F_SIZE+1)
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LD E,(IY + _sFM.FS_REC.F_SIZE+2)
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LD D,(IY + _sFM.FS_REC.F_SIZE+3)
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JP .DO
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; B > 2
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.error: LD A,DSS_Error.sys.INVALID_FUNCTION
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SCF
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RET
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