mirror of https://github.com/nmlgc/ReC98.git
203 lines
3.3 KiB
NASM
203 lines
3.3 KiB
NASM
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; superimpose & master library module
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;
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; Description:
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; パターンの登録
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;
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; Functions/Procedures:
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; int super_entry_pat( int patsize, void far *image_addr, int clear_color ) ;
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;
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; Parameters:
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; patsize
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; image_addr パターンの先頭アドレス
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; clear_color 透明色
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;
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; Returns:
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; InsufficientMemory (cy=1) メモリが足りない
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; GeneralFailure (cy=1) 登録数が多すぎる
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; 0〜 (cy=0) 成功。登録したパターン番号
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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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; Heapからメモリをパターンを保持するために取得します。
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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: superpat.asm 0.09 93/02/19 20:11:35 Kazumi Rel $
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;
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; 93/ 3/20 Initial: master.lib <- super.lib 0.22b
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; 93/12/ 6 [M0.22] BUGFIX パターンを全部削除したあとだと
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; super_bufferを再確保していた
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; 95/ 2/14 [M0.22k] mem_AllocID対応
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; 95/ 3/14 [M0.22k] BUGFIX 失敗時、GeneralFailure等が返っていなかった
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; 95/ 3/16 [M0.22k] BUGFIX 失敗時、メモリを開放していなかった
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MRETURN macro
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pop DI
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pop SI
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pop BP
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ret 8
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EVEN
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endm
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retfunc ENTRY_AT_ERROR ; エラー in: ES = pattern segment
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push AX
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push ES
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call HMEM_FREE
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pop AX
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jmp short ERROR_EXIT
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endfunc
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retfunc SUPERPAT_NO_MEMORY ; メモリ不足
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mov AX,InsufficientMemory
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ERROR_EXIT label near ; エラー終了 in: AX = error code
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stc
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MRETURN
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endfunc
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func SUPER_ENTRY_PAT ; super_entry_pat() {
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push BP
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mov BP,SP
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push SI
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push DI
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patsize = (RETSIZE+4)*2
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image_addr = (RETSIZE+2)*2
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clear_color = (RETSIZE+1)*2
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mov DI,super_patnum
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shl DI,1 ;integer size
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mov AX,[BP+patsize]
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mov DX,AX
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mul AH
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mov BX,AX ; BX = plane size
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shl AX,2
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add AX,BX
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mov mem_AllocID,MEMID_super
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push AX
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_call HMEM_ALLOCBYTE ; allocate (plane size * 5) bytes
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jc short SUPERPAT_NO_MEMORY
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mov ES,AX ; ES = パターン領域
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push super_patnum ; 登録番号
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push DX ; patsize
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push AX ; パターン領域
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_call SUPER_ENTRY_AT ; BX,ESは破壊されないこと
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jc short ENTRY_AT_ERROR
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push DS
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; パターンデータを確保パターン領域に転送する
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lds SI,[BP+image_addr]
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mov DI,BX
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mov CX,BX
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shl CX,1 ;4plane / word
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rep movsw
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push ES
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pop DS ; DS もパターン領域に
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; マスクプレーンを生成する
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mov SI,BX ; plane size (パターン先頭)
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mov DX,[BP+clear_color]
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mov DH,DL
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mov CX,BX
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xor DI,DI
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shr DH,1
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jc short BLUE_REV
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rep movsb
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jmp short RED
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EVEN
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BLUE_REV:
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lodsb
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not AL
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stosb
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loop short BLUE_REV
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EVEN
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RED:
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; red
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mov CX,BX
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xor DI,DI
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shr DH,1
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sbb AH,AH
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EVEN
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OR_RED:
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lodsb
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xor AL,AH
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or [DI],AL
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inc DI
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loop short OR_RED
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; green
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mov CX,BX
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xor DI,DI
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shr DH,1
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sbb AH,AH
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EVEN
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OR_GREEN:
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lodsb
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xor AL,AH
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or [DI],AL
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inc DI
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loop short OR_GREEN
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; inten
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mov CX,BX
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xor DI,DI
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shr DH,1
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sbb AH,AH
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EVEN
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OR_INTEN:
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lodsb
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xor AL,AH
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or [DI],AL
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inc DI
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loop short OR_INTEN
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; パターン内の透明部分をマスクで繰り抜く
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test DL,DL ; 透明色が 0 なら省略
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jz short @@return
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mov AH,4
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EVEN
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CLEAR:
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xor SI,SI
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mov CX,BX
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EVEN
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CLEAR_PLANE:
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lodsb
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and [DI],AL
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inc DI
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loop short CLEAR_PLANE
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dec AH
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jnz short CLEAR
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EVEN
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; 終わり
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@@return:
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pop DS
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mov AX,super_patnum
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dec AX
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MRETURN
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endfunc ; }
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