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4aa19494f5
As discussed in https://github.com/cc65/cc65/pull/452 after my premature merge the two functions in question don't work as expected. Additionally I adjusted several style deviations in the pull request in question.
305 lines
11 KiB
C
305 lines
11 KiB
C
/*****************************************************************************/
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/* */
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/* cbm.h */
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/* */
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/* CBM system-specific definitions */
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/* */
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/* */
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/* */
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/* (C) 1998-2015, Ullrich von Bassewitz */
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/* Roemerstrasse 52 */
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/* D-70794 Filderstadt */
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/* EMail: uz@cc65.org */
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/* */
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/* */
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/* This software is provided 'as-is', without any expressed or implied */
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/* warranty. In no event will the authors be held liable for any damages */
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/* arising from the use of this software. */
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/* */
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/* Permission is granted to anyone to use this software for any purpose, */
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/* including commercial applications, and to alter it and redistribute it */
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/* freely, subject to the following restrictions: */
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/* */
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/* 1. The origin of this software must not be misrepresented; you must not */
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/* claim that you wrote the original software. If you use this software */
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/* in a product, an acknowledgment in the product documentation would be */
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/* appreciated but is not required. */
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/* 2. Altered source versions must be plainly marked as such, and must not */
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/* be misrepresented as being the original software. */
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/* 3. This notice may not be removed or altered from any source */
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/* distribution. */
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/* */
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/*****************************************************************************/
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#ifndef _CBM_H
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#define _CBM_H
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/* Check for errors */
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#if !defined(__CBM__)
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# error This module may be used only when compiling for CBM machines!
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#endif
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/* We need NULL. */
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#if !defined(_STDDEF_H)
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# include <stddef.h>
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#endif
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/* Load the system-specific files here, if needed. */
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#if defined(__C64__) && !defined(_C64_H)
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# include <c64.h>
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#elif defined(__VIC20__) && !defined(_VIC20_H)
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# include <vic20.h>
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#elif defined(__C128__) && !defined(_C128_H)
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# include <c128.h>
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#elif defined(__PLUS4__) && !defined(_PLUS4_H)
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# include <plus4.h>
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#elif defined(__C16__) && !defined(_C16_H)
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# include <c16.h>
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#elif defined(__CBM510__) && !defined(_CBM510_H)
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# include <cbm510.h>
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#elif defined(__CBM610__) && !defined(_CBM610_H)
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# include <cbm610.h>
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#elif defined(__PET__) && !defined(_PET_H)
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# include <pet.h>
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#endif
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/* Include definitions for CBM file types */
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#include <cbm_filetype.h>
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#define JOY_FIRE_MASK JOY_BTN_1_MASK
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#define JOY_FIRE(v) ((v) & JOY_FIRE_MASK)
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/*****************************************************************************/
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/* Variables */
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/*****************************************************************************/
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/* The file stream implementation and the POSIX I/O functions will
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** use the following variable to determine the file type to use.
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*/
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extern char _filetype; /* Defaults to 's' */
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/*****************************************************************************/
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/* Character-codes (CBM charset) */
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/*****************************************************************************/
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#define CH_HLINE 192
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#define CH_VLINE 221
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#define CH_ULCORNER 176
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#define CH_URCORNER 174
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#define CH_LLCORNER 173
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#define CH_LRCORNER 189
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#define CH_TTEE 178
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#define CH_BTEE 177
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#define CH_LTEE 171
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#define CH_RTEE 179
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#define CH_CROSS 219
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#define CH_CURS_UP 145
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#define CH_CURS_DOWN 17
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#define CH_CURS_LEFT 157
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#define CH_CURS_RIGHT 29
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#define CH_PI 222
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#define CH_HOME 19
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#define CH_DEL 20
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#define CH_INS 148
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#define CH_ENTER 13
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#define CH_STOP 3
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#define CH_LIRA 92
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#define CH_ESC 27
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/*****************************************************************************/
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/* Definitions for directory reading functions */
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/*****************************************************************************/
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/* CBM FILE ACCESS */
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#define CBM_A_RO 1 /* Read only */
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#define CBM_A_WO 2 /* Write only */
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#define CBM_A_RW 3 /* Read, Write */
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struct cbm_dirent {
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char name[17]; /* File name in PetSCII, limited to 16 chars */
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unsigned int size; /* Size, in 254-/256-byte blocks */
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unsigned char type;
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unsigned char access;
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};
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/*****************************************************************************/
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/* Machine info */
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/*****************************************************************************/
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#define TV_NTSC 0
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#define TV_PAL 1
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#define TV_OTHER 2
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unsigned char get_tv (void);
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/* Return the video mode the machine is using. */
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#define KBREPEAT_CURSOR 0x00
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#define KBREPEAT_NONE 0x40
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#define KBREPEAT_ALL 0x80
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unsigned char __fastcall__ kbrepeat (unsigned char mode);
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/* Changes which keys have automatic repeat. */
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#if !defined(__CBM610__) && !defined(__PET__)
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void waitvsync (void);
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/* Wait for the start of the next frame */
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#endif
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/*****************************************************************************/
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/* CBM kernal functions */
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/*****************************************************************************/
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/* Constants to use with cbm_open() for openning a file for reading or
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** writing without the need to append ",r" or ",w" to the filename.
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**
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** e.g., cbm_open(2, 8, CBM_READ, "0:data,s");
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*/
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#define CBM_READ 0 /* default is ",p" */
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#define CBM_WRITE 1 /* ditto */
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#define CBM_SEQ 2 /* default is ",r" -- or ",s" when writing */
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/* Kernal-level functions */
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unsigned char cbm_k_acptr (void);
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unsigned char cbm_k_basin (void);
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void __fastcall__ cbm_k_bsout (unsigned char C);
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unsigned char __fastcall__ cbm_k_chkin (unsigned char FN);
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void __fastcall__ cbm_k_ciout (unsigned char C);
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unsigned char __fastcall__ cbm_k_ckout (unsigned char FN);
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void cbm_k_clall (void);
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void __fastcall__ cbm_k_close (unsigned char FN);
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void cbm_k_clrch (void);
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unsigned char cbm_k_getin (void);
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unsigned cbm_k_iobase (void);
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void __fastcall__ cbm_k_listen (unsigned char dev);
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unsigned int __fastcall__ cbm_k_load(unsigned char flag, unsigned addr);
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unsigned char cbm_k_open (void);
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unsigned char cbm_k_readst (void);
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unsigned char __fastcall__ cbm_k_save(unsigned int start, unsigned int end);
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void cbm_k_scnkey (void);
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void __fastcall__ cbm_k_setlfs (unsigned char LFN, unsigned char DEV,
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unsigned char SA);
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void __fastcall__ cbm_k_setnam (const char* Name);
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void __fastcall__ cbm_k_talk (unsigned char dev);
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void cbm_k_udtim (void);
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void cbm_k_unlsn (void);
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/*****************************************************************************/
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/* BASIC-like file I/O functions */
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/*****************************************************************************/
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/* The cbm_* I/O functions below set _oserror (see errno.h),
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** in case of an error.
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**
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** error-code BASIC error
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** ---------- -----------
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** 1 = too many files
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** 2 = file open
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** 3 = file not open
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** 4 = file not found
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** 5 = device not present
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** 6 = not input-file
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** 7 = not output-file
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** 8 = missing file-name
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** 9 = illegal device-number
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**
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** 10 = STOP-key pushed
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** 11 = general I/O-error
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*/
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unsigned int __fastcall__ cbm_load (const char* name, unsigned char device, void* data);
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/* Loads file "name", from given device, to given address -- or, to the load
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** address of the file if "data" is the null pointer (like load"name",8,1
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** in BASIC).
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** Returns number of bytes that were loaded if loading was successful;
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** otherwise 0, "_oserror" contains an error-code, then (see table above).
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*/
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unsigned char __fastcall__ cbm_save (const char* name, unsigned char device,
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const void* addr, unsigned int size);
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/* Saves "size" bytes, starting at "addr", to a file.
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** Returns 0 if saving was successful, otherwise an error-code (see table
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** above).
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*/
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unsigned char __fastcall__ cbm_open (unsigned char lfn, unsigned char device,
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unsigned char sec_addr, const char* name);
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/* Opens a file. Works just like the BASIC command.
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** Returns 0 if openning was successful, otherwise an error-code (see table
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** above).
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*/
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void __fastcall__ cbm_close (unsigned char lfn);
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/* Closes a file */
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int __fastcall__ cbm_read (unsigned char lfn, void* buffer, unsigned int size);
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/* Reads up to "size" bytes from a file into "buffer".
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** Returns the number of actually-read bytes, 0 if there are no bytes left.
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** -1 in case of an error; then, _oserror contains an error-code (see table
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** above). (Remember: 0 means end-of-file; -1 means error.)
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*/
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int __fastcall__ cbm_write (unsigned char lfn, const void* buffer,
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unsigned int size);
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/* Writes up to "size" bytes from "buffer" to a file.
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** Returns the number of actually-written bytes, or -1 in case of an error;
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** _oserror contains an error-code, then (see above table).
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*/
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unsigned char cbm_opendir (unsigned char lfn, unsigned char device, ...);
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/* Opens directory listing. Returns 0 if opening directory was successful;
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** otherwise, an error-code corresponding to cbm_open(). As an optional
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** argument, the name of the directory may be passed to the function. If
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** no explicit name is specified, "$" is used.
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*/
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unsigned char __fastcall__ cbm_readdir (unsigned char lfn,
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struct cbm_dirent* l_dirent);
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/* Reads one directory line into cbm_dirent structure.
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** Returns 0 if reading directory-line was successful.
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** Returns non-zero if reading directory failed, or no more file-names to read.
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** Returns 2 on last line. Then, l_dirent->size = the number of "blocks free."
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*/
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void __fastcall__ cbm_closedir (unsigned char lfn);
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/* Closes directory by cbm_close(lfn) */
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/* End of cbm.h */
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#endif
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