mirror of https://github.com/nmlgc/ReC98.git
91 lines
1.4 KiB
NASM
91 lines
1.4 KiB
NASM
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; superimpose & master library module
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;
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; Description:
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; BFNTファイルのヘッダを読み取る
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;
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; Functions/Procedures:
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; int bfnt_header_read( unsigned handle , void * bfntheader) ;
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;
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; Parameters:
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; handle ファイルハンドル
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; bfntheader 読み込み先
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;
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; Returns:
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; NoError (cy=0) 読み取り成功
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; InvalidData (cy=1) 読み取り失敗
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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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; MS-DOS
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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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;
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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: bfnthdrr.asm 0.03 93/01/15 11:33:46 Kazumi Rel $
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;
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; 93/ 3/17 Initial: master.lib <- super.lib 0.22b
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; 94/ 6/10 [M0.23] エラー時、DOSのエラーならsuper error codeに変換する
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;
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func BFNT_HEADER_READ ; {
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push BP
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mov BP,SP
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; 引数
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@@handle = (RETSIZE+1+DATASIZE)*2
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@@bfntheader = (RETSIZE+1)*2
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_push DS
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_lds DX,[BP+@@bfntheader]
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mov BX,[BP+@@handle]
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mov AH,3fh ; DOS: READ HANDLE
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mov CX,BFNT_HEADER_SIZE
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int 21h
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push DS
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pop ES
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_pop DS
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sbb CX,CX
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xor AX,CX
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sub AX,CX ; エラーなら符号反転,cy=1
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jc short @@ILLEGAL
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push SI
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push DI
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mov SI,offset BFNT_ID
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mov DI,DX
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mov CX,5
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repe cmpsb
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pop DI
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pop SI
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jne short @@INVALID
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mov AX,NoError
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pop BP
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ret (DATASIZE+1)*2
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@@INVALID:
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mov AX,InvalidData
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stc
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@@ILLEGAL:
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pop BP
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ret (DATASIZE+1)*2
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endfunc ; }
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