mirror of https://github.com/nmlgc/ReC98.git
159 lines
2.3 KiB
NASM
159 lines
2.3 KiB
NASM
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; master library - GRPHICS - GRCG - GAIJI - Cstring - PC98V
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;
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; Description:
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; グラフィック画面へ外字文字列を描画する
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;
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; Function/Procedures:
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; void graph_gaiji_puts( int x, int y, int step, char * ank, int color )
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;
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; Parameters:
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; x,y 開始左上座標
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; step 文字ごとに進めるドット数
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; ank 半角文字列(対応する外字コードに変換して描画します)
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; color 色( 0〜15 )
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;
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; Returns:
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; none
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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-9801V
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;
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; Requiring Resources:
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; CPU: V30
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; GRCG
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;
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; Notes:
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; クリッピングは行っていません。
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; 外字があらかじめ定義されている必要があります。
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;
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; Assembly Language Note:
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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
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;
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; Revision History:
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; 93/ 7/16 Initial: grpgputs.asm/master.lib 0.20
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func GRAPH_GAIJI_PUTS ; graph_gaiji_puts() {
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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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_push DS
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; 引数
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@@x = (RETSIZE+4+DATASIZE)*2
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@@y = (RETSIZE+3+DATASIZE)*2
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@@step = (RETSIZE+2+DATASIZE)*2
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@@ank = (RETSIZE+2)*2
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@@color = (RETSIZE+1)*2
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mov ES,graph_VramSeg
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mov CX,[BP+@@x]
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mov DI,[BP+@@y]
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mov BX,[BP+@@step]
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_lds SI,[BP+@@ank]
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mov DX,[BP+@@color]
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mov BP,BX
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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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; GRCG setting..
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mov AL,0c0h ;RMW mode
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pushf
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cli
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out 7ch,AL
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popf
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shr DX,1
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sbb AL,AL
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out 7eh,AL
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shr DX,1
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sbb AL,AL
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out 7eh,AL
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shr DX,1
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sbb AL,AL
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out 7eh,AL
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shr DX,1
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sbb AL,AL
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out 7eh,AL
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; CG dot access
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mov AL,0bh
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out 68h,AL
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@@START:
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lodsb
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or AL,AL
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jz short @@RETURN
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mov AH,0
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if MASTERMOD ge 3
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add AX,5680h ;from gjwrite.asm
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else
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adc AX,5680h ;from gjwrite.asm
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endif
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and AX,0ff7fh
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mov BX,CX
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and CX,7h ;CL=x%8(shift dot counter)
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shr BX,3 ;AX=x/8
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add DI,BX ;GVRAM offset address
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out 0a1h,AL
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mov AL,AH
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out 0a3h,AL
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mov DX,16
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xor CH,CH
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EVEN
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@@PUT_LOOP:
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mov AL,CH
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or AL,00100000b ;L/R
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out 0a5h,AL
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in AL,0a9h
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mov AH,AL
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mov AL,CH
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out 0a5h,AL
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in AL,0a9h
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mov BH,AL
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mov BL,0
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shr AX,CL
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shr BX,CL
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xchg AL,AH
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stosw
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mov ES:[DI],BL
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add DI,78 ;next line
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inc CH
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dec DX
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jnz short @@PUT_LOOP
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sub DI,80 * 16
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xor CH,CH
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add CX,BP
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jmp short @@START
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@@RETURN:
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; CG code access
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mov AL,0ah
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out 68h,AL
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; GRCG off
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xor AL,AL
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out 7ch,AL ;grcg stop
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_pop DS
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pop DI
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pop SI
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pop BP
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ret (4+DATASIZE)*2
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endfunc ; }
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