{ BLOK.ASM Copyright (c) Martin Kolecek } { Author: Martin Kolecek } { Datum: 01.05.2011 http://www.trsek.com } [SECTION ._TEXT] %define PASCAL %include "c16.mac" proc Blok %$Buffer arg %$Color arg %$y2 arg %$x2 arg %$y1 arg %$x1 arg JMP @start @kresli4: MOV AX, SI MOV BX, [BP+%$y1] MUL BX ; AX := y1*320 MOV CX, [BP+%$x1] ADD AX, CX ; AX := y1*320+x1 XOR EDI, EDI MOV DI, AX ; ES:DI := offset XOR EAX, EAX MOV BX, [BP+%$Color] ; BL = Color MOV AX, BX XOR AH, AH ; EAX = 00000000 00000000 00000000 1color01 SHL EAX, 8 ; EAX = 00000000 00000000 1color01 00000000 MOV AL, BL ; EAX = 00000000 00000000 1color01 1color01 SHL EAX, 8 ; EAX = 00000000 1color01 1color01 00000000 MOV AL, BL ; EAX = 00000000 1color01 1color01 1color01 SHL EAX, 8 ; EAX = 1color01 1color01 1color01 00000000 MOV AL, BL ; EAX = 1color01 1color01 1color01 1color01 MOV BX, [BP+%$y2] MOV DX, [BP+%$y1] SUB BX, DX INC BX ; BX = vyska MOV DX, GS ; DX = delka @cyklus2: MOV CX, FS ; CX = pocet STOSD cyklu @cyklus1: STOSD LOOP @cyklus1 MOV CX, BX SUB DI, DX ADD DI, SI DEC BX LOOP @cyklus2 RET @kresli1: MOV AX, SI MOV BX, [BP+%$y1] MUL BX ; AX := y1*320 MOV CX, [BP+%$x1] ADD AX, CX ; AX := y1*320+x1 XOR EDI, EDI MOV DI, AX ; ES:DI := offset XOR AX, AX INC AX MOV BX, GS CMP BX, AX JE @mensi1 MOV AX, GS ; + delka ADD DI, AX @mensi1: MOV AX, FS ADD DI, AX MOV AX, [BP+%$Color] ; AL = Color MOV BX, [BP+%$y2] MOV DX, [BP+%$y1] SUB BX, DX INC BX ; BX = vyska MOV CX, BX ; CX = pocet cyklu @cyklus3: STOSB DEC DI ADD DI, SI LOOP @cyklus3 RET @start: MOV AX, [BP+%$Buffer] MOV ES, AX ; ES := segment bufferu XOR AX, AX INC AX SHL AX, 8 XOR CX, CX INC CX SHL CX, 6 ADD AX, CX ; AX := 320 MOV SI, AX ; SI := 320 MOV AX, [BP+%$x2] MOV CX, [BP+%$x1] SUB AX, CX INC AX ; AX = delka MOV BX, AX ; BX = delka SHR BX, 2 MOV FS, BX ; FS = pocet cyklu STOSD MOV GS, AX ; GS = delka XOR CX, CX INC CX SHL CX, 2 ; CX := 4 CMP AX, CX JB @mensi4 SHL AX, 14 SHR AX, 14 JMP @continue @mensi4: XOR CX, CX INC CX MOV GS, CX @continue: XOR CX, CX CMP AX, CX JE @zbytek0 ; 000000000000xx AX=0 INC CX CMP AX, CX JE @zbytek1 ; 000000000000xx AX=1 INC CX CMP AX, CX JE @zbytek2 ; 000000000000xx AX=2 INC CX CMP AX, CX JE @zbytek3 ; 000000000000xx AX=3 @zbytek0: CALL @kresli4 JMP @konec @zbytek1: XOR AX, AX INC AX MOV BX, GS CMP BX, AX JE @mensi4zb1 MOV AX, GS DEC AX MOV GS, AX CALL @kresli4 @mensi4zb1: XOR AX, AX MOV FS, AX CALL @kresli1 JMP @konec @zbytek2: XOR AX, AX INC AX MOV BX, GS CMP BX, AX JE @mensi4zb2 MOV AX, GS DEC AX DEC AX MOV GS, AX CALL @kresli4 @mensi4zb2: XOR AX, AX MOV FS, AX CALL @kresli1 XOR AX, AX INC AX MOV FS, AX CALL @kresli1 JMP @konec @zbytek3: XOR AX, AX INC AX MOV BX, GS CMP BX, AX JE @mensi4zb3 MOV AX, GS DEC AX DEC AX DEC AX MOV GS, AX CALL @kresli4 @mensi4zb3: XOR AX, AX MOV FS, AX CALL @kresli1 XOR AX, AX INC AX MOV FS, AX CALL @kresli1 XOR AX, AX INC AX INC AX MOV FS, AX CALL @kresli1 JMP @konec @konec: endproc