mirror of https://github.com/nmlgc/ReC98.git
112 lines
1.7 KiB
NASM
112 lines
1.7 KiB
NASM
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; (Yes, this file should rather be called "bfnt_extend_header_analysis.asm",
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; but TASM crashes if a file name longer than 32 characters is included...)
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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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; int bfnt_extend_header_analysis( int handle, BFNT_HEADER * header ) ;
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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: 8086
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;
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; Notes:
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; far未対応
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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: bfthdran.asm 0.03 93/01/19 17:07:10 Kazumi Rel $
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;
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; 93/ 3/10 Initial: master.lib <- super.lib 0.22b
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; 94/ 1/ 3 [M0.22] bugfix(透明色が存在するときにsmemが開放されなかった)
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;
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func BFNT_EXTEND_HEADER_ANALYSIS
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push BP
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mov BP,SP
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push SI
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; 引数
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@@handle = (RETSIZE+1+DATASIZE)*2
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@@header = (RETSIZE+1)*2
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CLD
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_push DS
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_lds BX,[BP+@@header]
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mov CX,[BX].extSize
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mov SI,[BX].hdrSize
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_pop DS
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mov AX,0
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jcxz short @@FALL
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push CX
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_call SMEM_WGET ; メモリ確保
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jc short @@FALL
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push DS
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mov DS,AX ;segment
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xor DX,DX
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mov BX,[BP+@@handle]
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mov AH,3fh ; read handle
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int 21h
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mov AX,InvalidData
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jc short @@return
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mov DX,SI
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xor SI,SI
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EVEN
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@@next_header:
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lodsb
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cmp AL,10h ;透明色ID
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jz short @@clear
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add SI,DX
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sub SI,3
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lodsw
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or AX,AX
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jz short @@noclear
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sub CX,DX
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mov DX,AX
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ja short @@next_header
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@@noclear:
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xor AX,AX ;拡張ヘッダ無い時は透明色:0
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jmp short @@return
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EVEN
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@@clear: lodsw
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lodsb
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and AX,000fh
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EVEN
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@@return:
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mov BX,DS
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pop DS
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push BX
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_call SMEM_RELEASE
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@@FALL:
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pop SI
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pop BP
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ret (1+DATASIZE)*2
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endfunc
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