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https://github.com/Pecusx/libretro-atari800.git
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R-type
57 lines
2.0 KiB
C
57 lines
2.0 KiB
C
#ifndef XEP80_H_
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#define XEP80_H_
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#include "config.h"
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#include "atari.h"
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#define XEP80_WIDTH 256
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#define XEP80_HEIGHT 25
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#define XEP80_CHAR_WIDTH 7
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#define XEP80_MAX_CHAR_HEIGHT 12
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#define XEP80_GRAPH_WIDTH 320
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#define XEP80_GRAPH_HEIGHT 200
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#define XEP80_LINE_LEN 80
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#define XEP80_SCRN_WIDTH (XEP80_LINE_LEN * XEP80_CHAR_WIDTH)
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#define XEP80_MAX_SCRN_HEIGHT (XEP80_HEIGHT * XEP80_MAX_CHAR_HEIGHT)
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/* Current height of the XEP80 screen */
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extern int XEP80_scrn_height;
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/* Current height of XEP80 characters. */
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extern int XEP80_char_height;
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/* XEP80 hardware is TV system-independent - it can switch to NTSC or PAL
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(or "60Hz" and "50Hz" modes, as they're called in the docs). In each mode
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number of lines per each char varies as defined below.
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NTSC screenshots:
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http://www.atariage.com/forums/topic/108601-what-does-xep80-display-look-like/page__p__1314304#entry1314304
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http://www.atariage.com/forums/topic/171976-xep80-looks-like-this-on-real-hardware/page__p__2130114#entry2130114
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http://www.atariage.com/forums/topic/124642-atari-8-bit-sc1224-bw-greyscale-monitor-interface/page__view__findpost__p__1508084
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PAL screenshots:
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http://www.atariage.com/forums/topic/134208-atari-8-bit-irc-client-fujichat-03-released/page__p__1617958#entry1617958
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http://www.atari.org.pl/forum/viewtopic.php?pid=142647#p142647 (sign in to see) */
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enum {
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XEP80_CHAR_HEIGHT_NTSC = 10,
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XEP80_CHAR_HEIGHT_PAL = 12
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};
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#define XEP80_ATARI_EOL 0x9b
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/* Is XEP80 enabled? Don't change directly, use XEP80_SetEnabled(). */
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extern int XEP80_enabled;
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int XEP80_SetEnabled(int value);
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extern int XEP80_port;
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extern UBYTE XEP80_screen_1[XEP80_SCRN_WIDTH*XEP80_MAX_SCRN_HEIGHT];
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extern UBYTE XEP80_screen_2[XEP80_SCRN_WIDTH*XEP80_MAX_SCRN_HEIGHT];
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UBYTE XEP80_GetBit(void);
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void XEP80_PutBit(UBYTE byte);
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void XEP80_ChangeColors(void);
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void XEP80_StateSave(void);
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void XEP80_StateRead(void);
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int XEP80_ReadConfig(char *string, char *ptr);
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void XEP80_WriteConfig(FILE *fp);
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int XEP80_Initialise(int *argc, char *argv[]);
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#endif /* XEP80_H_ */
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