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https://github.com/SEPPDROID/Digital-Research-Source-Code.git
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102 lines
4.0 KiB
C
102 lines
4.0 KiB
C
/****************************************************************************/
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/* */
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/* C P M . H */
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/* --------- */
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/* */
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/* This file contains CP/M specific definitions for the v6 library */
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/* for the Alcyon assembler / linker. */
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/* */
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/* "stdio.h" must be included BEFORE this file. */
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/* */
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/****************************************************************************/
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/*
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* Cp/m FCB definition
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*/
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struct xfcb /****************************/
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{ /* */
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BYTE drive; /* Disk drive field */
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BYTE fname[8]; /* File name */
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BYTE ftype[3]; /* File type */
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BYTE extent; /* Current extent number */
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BYTE s1,s2; /* "system reserved" */
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BYTE reccnt; /* Record counter */
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BYTE resvd[16]; /* More "system reserved" */
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LONG record; /* Note -- we overlap the */
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/* current record field to */
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/* make this useful. */
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}; /****************************/
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#define SECSIZ 128 /* # bytes / CP/M sector */
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/****************************/
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/****************************************************************************/
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/* */
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/* Channel Control Block (CCB) */
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/* */
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/* One CCB is allocated (statically) for each of the 16 possible open */
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/* files under C (including STDIN, STDOUT, STDERR). Permanent data */
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/* regarding the channel is kept here. */
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/* */
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/* */
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/****************************************************************************/
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struct ccb /************************************/
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{ /* */
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BYTE flags; /* Flags byte */
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BYTE chan; /* Channel number being used */
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LONG offset; /* File offset word (bytes) */
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LONG sector; /* Sector currently in buffer */
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LONG hiwater; /* High water mark */
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struct xfcb fcb; /* File FCB */
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BYTE buffer[SECSIZ]; /* Read / write buffer */
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}; /************************************/
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#define MAXFILE 16 /* Maximum # files */
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extern struct ccb _iob[MAXFILE]; /* Declare storage */
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/* Flags word bit definitions */
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/************************************/
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#define OPENED 1 /* Channel is OPEN */
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#define ISTTY 2 /* Channel open to TTT */
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#define ISLPT 4 /* Channel open to LPT */
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#define ISREAD 8 /* Channel open readonly */
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#define ISASCII 16 /* ASCII file attached */
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#define ATEOF 32 /* End of file encountered */
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#define DIRTY 64 /* Buffer needs writing */
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/************************************/
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/****************************************************************************/
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/* */
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/* B D O S F u n c t i o n D e f i n i t i o n s */
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/* ------------------------------------------------- */
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/* */
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/* Following are BDOS function definitions used by the C runtime */
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/* library. */
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/* */
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/****************************************************************************/
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/****************************/
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#define EXIT 0 /* Exit to BDOS */
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#define CONOUT 2 /* Direct console output */
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#define LSTOUT 5 /* Direct list device output*/
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#define CONIO 6 /* Direct console I/O */
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#define CONBUF 10 /* Read console buffer */
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#define OPEN 15 /* OPEN a disk file */
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#define CLOSE 16 /* Close a disk file */
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#define DELETE 19 /* Delete a disk file */
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#define CREATE 22 /* Create a disk file */
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#define SETDMA 26 /* Set DMA address */
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#define B_READ 33 /* Read Random record */
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#define B_WRITE 34 /* Write Random record */
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/****************************/
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/****************************************************************************/
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/* Other CP/M definitions */
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/****************************************************************************/
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#define TERM "CON:" /* Console file name */
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#define LIST "LST:" /* List device file name */
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#define EOFCHAR 0x1a /* End of file character-^Z */
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/****************************/
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