mirror of https://github.com/nmlgc/ReC98.git
305 lines
4.3 KiB
NASM
305 lines
4.3 KiB
NASM
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; superimpose & master library module
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;
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; Description:
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;
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;
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; Functions/Procedures:
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; super_put_1plane
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;
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; Parameters:
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;
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;
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; Returns:
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;
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;
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; Binding Target:
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; Microsoft-C / Turbo-C / Turbo Pascal
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;
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; Running Target:
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; PC-9801
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;
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; Requiring Resources:
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; CPU: V30
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;
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; Notes:
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;
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;
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; Compiler/Assembler:
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; TASM 3.0
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; OPTASM 1.6
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;
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; Author:
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; Kazumi(奥田 仁)
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; 恋塚(恋塚昭彦)
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;
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; Revision History:
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;
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;$Id: super1pl.asm 0.03 92/05/29 20:19:10 Kazumi Rel $
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;
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; 93/ 3/20 Initial: master.lib <- super.lib 0.22b
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; 93/ 9/20 [M0.21] WORD_MASK廃止
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;
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func SUPER_PUT_1PLANE
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push BP
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mov BP,SP
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push DS
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push SI
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push DI
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@@x = (RETSIZE+5)*2
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@@y = (RETSIZE+4)*2
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@@num = (RETSIZE+3)*2
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@@pat_plane = (RETSIZE+2)*2
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@@put_plane = (RETSIZE+1)*2
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mov CX,[BP+@@x]
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mov DI,[BP+@@y]
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mov SI,[BP+@@pat_plane]
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mov AX,[BP+@@put_plane]
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out 7ch,AL ;RMW mode
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mov AL,AH
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out 7eh,AL
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out 7eh,AL
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out 7eh,AL
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out 7eh,AL
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mov AX,DI ;-+
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shl AX,2 ; |
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add DI,AX ; |DI=y*80
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shl DI,4 ;-+
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mov AX,CX
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and CX,7h ;CL=x%8(shift dot counter)
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shr AX,3 ;AX=x/8
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add DI,AX ;GVRAM offset address
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mov BX,[BP+@@num]
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shl BX,1 ;integer size & near pointer
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mov DX,super_patsize[BX] ;pattern size (1-8)
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push BX
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mov AL,DH
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xor AH,AH
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mul DL
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mov BP,AX
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pop AX
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xor BX,BX
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or SI,SI
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jz short @@plane_end
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@@plane_search:
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add BX,BP
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dec SI
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jnz @@plane_search
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@@plane_end:
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mov ES,BX
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mov SI,CX
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mov BL,BYTE_MASK[SI]
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mov CH,DH ;DL -> DH
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shr CH,1
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test DI,1
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jz short @@even_address
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jmp @@odd_address
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@@even_address:
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mov BP,DI ;save DI
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test DH,1 ;DX -> DH
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jnz short @@odd_size1
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mov BYTE PTR CS:[@@word_mask1],BL
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mov BYTE PTR CS:[@@count1],CH
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mov BX,AX
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mov SI,ES
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mov DS,super_patdata[BX]
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mov BX,DX
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xor BH,BH
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mov AL,80
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sub AL,DH ;DL -> DH
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mov BYTE PTR CS:[@@add_di1],AL
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mov AX,0a800h
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mov ES,AX
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xor DL,DL
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EVEN
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@@put_loop1:
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lodsw
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ror AX,CL
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mov DH,AL
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and AL,11h ;dummy
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@@word_mask1 EQU $-1
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xor DH,AL
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or AL,DL
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stosw ;mov ES:[DI],AX ;;;or
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mov DL,DH
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dec CH
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jnz @@put_loop1
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mov ES:[DI],DL
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mov DL,CH ;DL=0
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add DI,80 ;dummy
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@@add_di1 EQU $-1
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mov CH,11h ;dummy
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@@count1 EQU $-1
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dec BX
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jnz @@put_loop1
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jmp @@return
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EVEN
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@@odd_size1:
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mov BYTE PTR CS:[@@word_mask2],BL
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mov BYTE PTR CS:[@@count2],CH
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mov BX,AX
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mov SI,ES
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mov DS,super_patdata[BX]
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mov BX,DX
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xor BH,BH
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mov AL,80
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sub AL,DH
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mov BYTE PTR CS:[@@add_di2],AL
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mov AX,0a800h
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mov ES,AX
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xor DL,DL
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EVEN
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@@single_check2:
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or CH,CH
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jz short @@skip2
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EVEN
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@@put_loop2:
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lodsw
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ror AX,CL
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mov DH,AL
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and AL,11h ;dummy
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@@word_mask2 EQU $-1
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xor DH,AL
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or AL,DL
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stosw ;mov ES:[DI],AX ;;;or
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mov DL,DH
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dec CH
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jnz @@put_loop2
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@@skip2:
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lodsb
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xor AH,AH
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ror AX,CL
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or AL,DL
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stosw
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dec DI
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mov DL,CH ;DL=0
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add DI,80 ;dummy
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@@add_di2 EQU $-1
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mov CH,11h ;dummy
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@@count2 EQU $-1
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dec BX
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jnz @@single_check2
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jmp @@return
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EVEN
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@@odd_address:
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dec DI
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mov BP,DI ;save DI
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test DH,1
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jnz short @@odd_size2
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mov BYTE PTR CS:[@@word_mask3],BL
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dec CH ;!!!!!!!!!!!!!!!!!!!!!
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mov BYTE PTR CS:[@@count3],CH
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mov BX,AX
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mov SI,ES
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mov DS,super_patdata[BX]
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mov BX,DX
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xor BH,BH
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mov AL,78 ;word
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sub AL,DH
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mov BYTE PTR CS:[@@add_di3],AL
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mov AX,0a800h
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mov ES,AX
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EVEN
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@@put_loop3_1:
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lodsb
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xor AH,AH
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ror AX,CL
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mov DL,AH
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xchg AH,AL
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xor AL,AL
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stosw
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or CH,CH
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jz short @@no_word1
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EVEN
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@@put_loop3_2:
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lodsw
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ror AX,CL
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mov DH,AL
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and AL,11h ;dummy
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@@word_mask3 EQU $-1
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xor DH,AL
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or AL,DL
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stosw ;mov ES:[DI],AX ;;;or
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mov DL,DH
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dec CH
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jnz @@put_loop3_2
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EVEN
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@@no_word1:
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lodsb
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xor AH,AH
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ror AX,CL
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or AL,DL
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stosw
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mov DL,CH ;DL=0
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add DI,80 ;dummy
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@@add_di3 EQU $-1
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mov CH,11h ;dummy
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@@count3 EQU $-1
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dec BX
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jnz @@put_loop3_1
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jmp short @@return
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EVEN
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@@odd_size2:
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mov BYTE PTR CS:[@@word_mask4],BL
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mov BYTE PTR CS:[@@count4],CH
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mov BX,AX
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mov SI,ES
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mov DS,super_patdata[BX]
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mov BX,DX
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xor BH,BH
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mov AL,79 ;word
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sub AL,DH
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mov BYTE PTR CS:[@@add_di4],AL
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mov AX,0a800h
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mov ES,AX
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EVEN
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@@put_loop4_1:
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lodsb
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xor AH,AH
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ror AX,CL
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mov DL,AH
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xchg AH,AL
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xor AL,AL
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stosw
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or CH,CH
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jz short @@no_word2
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EVEN
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@@put_loop4_2:
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lodsw
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ror AX,CL
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mov DH,AL
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and AL,11h ;dummy
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@@word_mask4 EQU $-1
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xor DH,AL
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or AL,DL
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stosw ;mov ES:[DI],AX ;;;or
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mov DL,DH
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dec CH
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jnz @@put_loop4_2
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EVEN
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@@no_word2:
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mov ES:[DI],DL
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mov DL,CH ;DL=0
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add DI,80 ;dummy
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@@add_di4 EQU $-1
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mov CH,11h ;dummy
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@@count4 EQU $-1
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dec BX
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jnz @@put_loop4_1
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@@return:
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xor AL,AL
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out 7ch,AL ;grcg stop
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pop DI
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pop SI
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pop DS
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pop BP
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ret 10
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endfunc
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