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cc65/include/cbm.h
uz ba2a945417 Changes by Greg King: 
Made cbm_readdir() report a disk's format-code and more file-access modes.
Added more definitions to <cbm.h> for cbm_readdir().  And, improved the
header's comments.  Added some ASCII-to-PetSCII character-mappings.


git-svn-id: svn://svn.cc65.org/cc65/trunk@4986 b7a2c559-68d2-44c3-8de9-860c34a00d81
2011-04-16 12:28:06 +00:00

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/*****************************************************************************/
/* */
/* cbm.h */
/* */
/* CBM system-specific definitions */
/* */
/* */
/* */
/* (c) 1998-2011, Ullrich von Bassewitz */
/* Roemerstrasse 52 */
/* D-70794 Filderstadt */
/* EMail: uz@cc65.org */
/* */
/* */
/* This software is provided 'as-is', without any expressed or implied */
/* warranty. In no event will the authors be held liable for any damages */
/* arising from the use of this software. */
/* */
/* Permission is granted to anyone to use this software for any purpose, */
/* including commercial applications, and to alter it and redistribute it */
/* freely, subject to the following restrictions: */
/* */
/* 1. The origin of this software must not be misrepresented; you must not */
/* claim that you wrote the original software. If you use this software */
/* in a product, an acknowledgment in the product documentation would be */
/* appreciated but is not required. */
/* 2. Altered source versions must be plainly marked as such, and must not */
/* be misrepresented as being the original software. */
/* 3. This notice may not be removed or altered from any source */
/* distribution. */
/* */
/*****************************************************************************/
#ifndef _CBM_H
#define _CBM_H
/* Check for errors */
#if !defined(__CBM__)
# error This module may be used only when compiling for CBM machines!
#endif
/* We need NULL. */
#if !defined(_STDDEF_H)
# include <stddef.h>
#endif
/* Load the system-specific files here, if needed. */
#if defined(__C64__) && !defined(_C64_H)
# include <c64.h>
#elif defined(__VIC20__) && !defined(_VIC20_H)
# include <vic20.h>
#elif defined(__C128__) && !defined(_C128_H)
# include <c128.h>
#elif defined(__PLUS4__) && !defined(_PLUS4_H)
# include <plus4.h>
#elif defined(__C16__) && !defined(_C16_H)
# include <c16.h>
#elif defined(__CBM510__) && !defined(_CBM510_H)
# include <cbm510.h>
#elif defined(__CBM610__) && !defined(_CBM610_H)
# include <cbm610.h>
#elif defined(__PET__) && !defined(_PET_H)
# include <pet.h>
#endif
/*****************************************************************************/
/* Variables */
/*****************************************************************************/
/* The file stream implementation and the POSIX I/O functions will use the
* following variables to determine the file type and the disk unit to use.
*/
extern unsigned char _curunit; /* Defaults to current when program started */
extern char _filetype; /* Defaults to 'u' */
/*****************************************************************************/
/* Character-codes (CBM charset) */
/*****************************************************************************/
#ifdef __CC65__
/* ASCII-to-PetSCII character-map translations:
* These lines convert characters that are not in CBM's character-set
* into codes with shapes that resemble the ASCII shapes.
*/
#pragma charmap(0x5c,0xbf) /* '\\' */
#pragma charmap(0x5f,0xa4) /* '_' thinner than built-in one */
#pragma charmap(0x60,0xad) /* '`' */
#pragma charmap(0x7b,0xb3) /* '{' */
#pragma charmap(0x7c,0xdd) /* '|' "official" PetSCII code */
#pragma charmap(0x7d,0xab) /* '}' */
#pragma charmap(0x7e,0xb1) /* '~' */
#endif
#define CH_HLINE 192
#define CH_VLINE 221
#define CH_ULCORNER 176
#define CH_URCORNER 174
#define CH_LLCORNER 173
#define CH_LRCORNER 189
#define CH_TTEE 178
#define CH_BTEE 177
#define CH_LTEE 171
#define CH_RTEE 179
#define CH_CROSS 219
#define CH_CURS_UP 145
#define CH_CURS_DOWN 17
#define CH_CURS_LEFT 157
#define CH_CURS_RIGHT 29
#define CH_PI 222
#define CH_HOME 19
#define CH_DEL 20
#define CH_INS 148
#define CH_ENTER 13
#define CH_STOP 3
#define CH_LIRA 92
#define CH_ESC 27
/*****************************************************************************/
/* Definitions for directory reading functions */
/*****************************************************************************/
/* CBM FILE TYPES */
#define CBM_T_DEL 0
#define CBM_T_SEQ 1
#define CBM_T_PRG 2
#define CBM_T_USR 3
#define CBM_T_REL 4
#define CBM_T_CBM 5 /* 1581 sub-partition */
#define CBM_T_DIR 6 /* IDE64 and CMD sub-directory */
#define CBM_T_LNK 7 /* IDE64 soft-link */
#define CBM_T_VRP 8 /* Vorpal fast-loadable format */
#define CBM_T_OTHER 9 /* File-type not recognized */
#define CBM_T_HEADER 10 /* Disk header / title */
/* CBM FILE ACCESS */
#define CBM_A_RO 1 /* Read only */
#define CBM_A_WO 2 /* Write only */
#define CBM_A_RW 3 /* Read, Write */
struct cbm_dirent {
char name[17]; /* File name in PetSCII, limited to 16 chars */
unsigned int size; /* Size, in 254-/256-byte blocks */
unsigned char type;
unsigned char access;
};
/*****************************************************************************/
/* Machine info */
/*****************************************************************************/
#define TV_NTSC 0
#define TV_PAL 1
#define TV_OTHER 2
unsigned char __fastcall__ get_tv (void);
/* Return the video mode the machine is using. */
/*****************************************************************************/
/* CBM kernal functions */
/*****************************************************************************/
/* Constants to use with cbm_open() for openning a file for reading or
* writing without the need to append ",r" or ",w" to the filename.
*
* e.g., cbm_open(2, 8, CBM_READ, "0:data,s");
*/
#define CBM_READ 0 /* default is ",p" */
#define CBM_WRITE 1 /* ditto */
#define CBM_SEQ 2 /* default is ",r" -- or ",s" when writing */
/* Kernal-level functions */
void __fastcall__ cbm_k_setlfs (unsigned char LFN, unsigned char DEV,
unsigned char SA);
void __fastcall__ cbm_k_setnam (const char* Name);
unsigned int __fastcall__ cbm_k_load(unsigned char flag, unsigned addr);
unsigned char __fastcall__ cbm_k_save(unsigned int start, unsigned int end);
unsigned char cbm_k_open (void);
void __fastcall__ cbm_k_close (unsigned char FN);
signed char cbm_k_readst (void);
unsigned char __fastcall__ cbm_k_chkin (unsigned char FN);
unsigned char __fastcall__ cbm_k_ckout (unsigned char FN);
unsigned char cbm_k_basin (void);
unsigned char cbm_k_getin (void);
void __fastcall__ cbm_k_bsout (unsigned char C);
void cbm_k_clrch (void);
void cbm_clall (void);
/*****************************************************************************/
/* BASIC-like file I/O functions */
/*****************************************************************************/
/* The cbm_* I/O functions below set _oserror (see errno.h),
* in case of an error.
*
* error-code BASIC error
* ---------- -----------
* 1 = too many files
* 2 = file open
* 3 = file not open
* 4 = file not found
* 5 = device not present
* 6 = not input-file
* 7 = not output-file
* 8 = missing file-name
* 9 = illegal device-number
*
* 10 = STOP-key pushed
* 11 = general I/O-error
*/
unsigned int cbm_load (const char* name, unsigned char device, void* data);
/* Loads file "name", from given device, to given address -- or, to the load
* address of the file if "data" is the null pointer (like load"name",8,1
* in BASIC).
* Returns number of bytes that were loaded if loading was successful;
* otherwise 0, "_oserror" contains an error-code, then (see table above).
*/
unsigned char __fastcall__ cbm_save (const char* name, unsigned char device,
const void* addr, unsigned int size);
/* Saves "size" bytes, starting at "addr", to a file.
* Returns 0 if saving was successful, otherwise an error-code (see table
* above).
*/
unsigned char __fastcall__ cbm_open (unsigned char lfn, unsigned char device,
unsigned char sec_addr, const char* name);
/* Opens a file. Works just like the BASIC command.
* Returns 0 if openning was successful, otherwise an error-code (see table
* above).
*/
void __fastcall__ cbm_close (unsigned char lfn);
/* Closes a file */
int __fastcall__ cbm_read (unsigned char lfn, void* buffer, unsigned int size);
/* Reads up to "size" bytes from a file into "buffer".
* Returns the number of actually-read bytes, 0 if there are no bytes left.
* -1 in case of an error; then, _oserror contains an error-code (see table
* above). (Remember: 0 means end-of-file; -1 means error.)
*/
int __fastcall__ cbm_write (unsigned char lfn, const void* buffer,
unsigned int size);
/* Writes up to "size" bytes from "buffer" to a file.
* Returns the number of actually-written bytes, or -1 in case of an error;
* _oserror contains an error-code, then (see above table).
*/
unsigned char __fastcall__ cbm_opendir (unsigned char lfn, unsigned char device);
/* Opens directory listing.
* Returns 0 if openning directory was successful;
* otherwise, an error-code corresponding to cbm_open().
*/
unsigned char __fastcall__ cbm_readdir (unsigned char lfn,
struct cbm_dirent* l_dirent);
/* Reads one directory line into cbm_dirent structure.
* Returns 0 if reading directory-line was successful.
* Returns non-zero if reading directory failed, or no more file-names to read.
* Returns 2 on last line. Then, l_dirent->size = the number of "blocks free."
*/
void __fastcall__ cbm_closedir (unsigned char lfn);
/* Closes directory by cbm_close(lfn) */
/* End of cbm.h */
#endif
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