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/* $NetBSD: video.h,v 1.4 1996/01/02 20:59:43 leo Exp $ */
/*
* Copyright (c) 1995 Leo Weppelman.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Leo Weppelman.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _MACHINE_VIDEO_H
#define _MACHINE_VIDEO_H
/*
* Access to circuitry for video
*/
#define VIDEO ((struct video *)AD_VIDEO)
struct video {
volatile char vdb[14]; /* sparsely filled */
volatile u_short vd_line_wide; /* Falcon line word distance */
volatile u_short vd_vert_wrap; /* Falcon line length */
volatile char vd_fill0[45]; /* filler */
volatile u_short vd_st_rgb[16]; /* RGB for simultaneous colors (ST)*/
volatile u_char vd_st_res; /* ST resolution */
volatile char vd_fill1; /* filler */
volatile u_short vd_tt_res; /* TT-resultion mode */
volatile u_char vd_ste_hscroll; /* MEGA STe hor bitwise scroll */
volatile u_short vd_fal_res; /* Falcon resolution */
volatile char vd_fill2[23];
volatile u_short vd_h_hold_cnt; /* Falcon horizontal hold counter */
volatile u_short vd_h_hold_tim; /* Falcon horizontal hold timer */
volatile u_short vd_h_bord_beg; /* Falcon horizontal border begin */
volatile u_short vd_h_bord_end; /* Falcon horizontal border end */
volatile u_short vd_h_dis_beg; /* Falcon horizontal display begin */
volatile u_short vd_h_dis_end; /* Falcon horizontal display end */
volatile u_short vd_h_ss; /* Falcon horizontal SS */
volatile u_short vd_h_fs; /* Falcon horizontal FS */
volatile u_short vd_h_hh; /* Falcon horizontal HH */
volatile char vd_fill3[13];
volatile u_short vd_v_freq_cnt; /* Falcon vertical frequency count */
volatile u_short vd_v_freq_tim; /* Falcon vertical frequency timer */
volatile u_short vd_v_bord_beg; /* Falcon vertical border begin */
volatile u_short vd_v_bord_end; /* Falcon vertical border end */
volatile u_short vd_v_dis_beg; /* Falcon vertical display begin */
volatile u_short vd_v_dis_end; /* Falcon vertical display end */
volatile u_short vd_v_ss; /* Falcon vertical SS */
volatile char vd_fill4[17];
volatile u_short vd_fal_ctrl; /* Falcon video control */
volatile u_short vd_fal_mode; /* Falcon video mode */
volatile char vd_fill5[315];
volatile u_short vd_tt_rgb[256]; /* RGB for simultaneous TT colors */
volatile char vd_fill6[4608];
volatile u_long vd_fal_rgb[256];/* RGB for Falcon colors */
};
#define vd_ramh vdb[ 1] /* base address Video RAM, high byte */
#define vd_ramm vdb[ 3] /* base address Video RAM, mid byte */
#define vd_raml vdb[13] /* base address Video RAM, low byte */
#define vd_ptrh vdb[ 5] /* scan address Video RAM, high byte */
#define vd_ptrm vdb[ 7] /* scan address Video RAM, mid byte */
#define vd_ptrl vdb[ 9] /* scan address Video RAM, low byte */
#define vd_sync vdb[10] /* synchronization mode */
/* bits in vd_sync: */
#define SYNC_EXT 0x01 /* extern sync */
#define SYNC_50 0x02 /* 50 Hertz (used for color) */
/* bits in vd_st_rgb[]: */
#define RGB_B 0x0007
#define RGB_G 0x0070
#define RGB_R 0x0700
/* some values for vd_st_rgb[]: */
#define RGB_BLACK 0x0000
#define RGB_RED 0x0700
#define RGB_GREEN 0x0070
#define RGB_BLUE 0x0007
#define RGB_WHITE 0x0777
#define RGB_MAGENTA 0x0707
#define RGB_CYAN 0x0077
#define RGB_YELLOW 0x0770
#define RGB_LGREY 0x0555
#define RGB_DGREY 0x0222
/* values for vd_st_res: */
#define RES_LOW 0x00 /* 320x200, 16 colors */
#define RES_MID 0x01 /* 640x200, 4 colors */
#define RES_HIGH 0x02 /* 640x400, monochrome */
/* masks for vd_tt_res: */
#define RES_STLOW 0x0000 /* 320x200, 16 colors */
#define RES_STMID 0x0100 /* 640x200, 4 colors */
#define RES_STHIGH 0x0200 /* 640x400, monochrome */
#define RES_TTMID 0x0400 /* 640x480, 16 colors */
#define RES_TTHIGH 0x0600 /* 1280x960, monochrome */
#define RES_TTLOW 0x0700 /* 320x480, 256 colors */
#define TT_PALLET 0x000f /* Pallette number */
#define TT_HYMONO 0x8000 /* Hyper mono mode */
#define TT_SHOLD 0x1000 /* Sample/hold mode */
/* The falcon video modes */
#define RES_FALAUTO 0 /* Falcon resolution dedected at boot */
#define RES_VGA2 1 /* 640x480, 2 colors */
#define RES_VGA4 2 /* 640x480, 4 colors */
#define RES_VGA16 3 /* 640x480, 16 colors */
#define RES_VGA256 4 /* 640x480, 256 colors */
#define RES_DIRECT 5 /* 320x200, 65536 colors */
#define RES_FAL_STLOW 6 /* 320x200, 16 colors */
#define RES_FAL_STMID 7 /* 640x200, 4 colors */
#define RES_FAL_STHIGH 8 /* 640x400, 2 colors */
#define RES_FAL_TTLOW 9 /* 320x480, 256 colors */
/*
* Yahama YM-2149 Programmable Sound Generator
*/
#define SOUND ((struct sound *)AD_SOUND)
struct sound {
char sdb[4]; /* use only the even bytes */
};
#define sd_selr sdb[0] /* select register */
#define sd_rdat sdb[0] /* read register data */
#define sd_wdat sdb[2] /* write register data */
/*
* Accessing the YM-2149 registers is indirect through ST-specific
* circuitry by writing the register number into sd_selr.
*/
#define YM_PA0 0 /* Period Channel A, bits 0-7 */
#define YM_PA1 1 /* Period Channel A, bits 8-11 */
#define YM_PB0 2 /* Period Channel B, bits 0-7 */
#define YM_PB1 3 /* Period Channel B, bits 8-11 */
#define YM_PC0 4 /* Period Channel C, bits 0-7 */
#define YM_PC1 5 /* Period Channel C, bits 8-11 */
#define YM_PNG 6 /* Period Noise Generator, bits 0-4 */
#define YM_MFR 7 /* Multi Function Register */
#define YM_VA 8 /* Volume Channel A */
#define YM_VB 9 /* Volume Channel B */
#define YM_VC 10 /* Volume Channel C */
#define YM_PE0 11 /* Period Envelope, bits 0-7 */
#define YM_PE1 12 /* Period Envelope, bits 8-15 */
#define YM_WFE 13 /* Wave Form Envelope */
#define YM_IOA 14 /* I/O port A */
#define YM_IOB 15 /* I/O port B */
/* bits in MFR: */
#define SA_OFF 0x01 /* Sound Channel A off */
#define SB_OFF 0x02 /* Sound Channel B off */
#define SC_OFF 0x04 /* Sound Channel C off */
#define NA_OFF 0x08 /* Noise Channel A off */
#define NB_OFF 0x10 /* Noise Channel B off */
#define NC_OFF 0x20 /* Noise Channel C off */
#define PA_OUT 0x40 /* Port A for Output */
#define PB_OUT 0x80 /* Port B for Output */
/* bits in Vx: */
#define VOLUME 0x0F /* 16 steps */
#define ENVELOP 0x10 /* volume steered by envelope */
/* bits in WFE: */
#define WF_HOLD 0x01 /* hold after one period */
#define WF_ALTERNAT 0x02 /* up and down (no saw teeth) */
#define WF_ATTACK 0x04 /* start up */
#define WF_CONTINUE 0x08 /* multiple periods */
/* names for bits in Port A (ST specific): */
#define PA_SIDEB 0x01 /* select floppy head - if double sided */
#define PA_FLOP0 0x02 /* Drive Select Floppy 0 */
#define PA_FLOP1 0x04 /* Drive Select Floppy 1 */
#define PA_SRTS 0x08 /* Serial RTS */
#define PA_SDTR 0x10 /* Serial DTR */
#define PA_PSTROBE 0x20 /* Parallel Strobe */
#define PA_USER 0x40 /* Free Pin on Monitor Connector */
#define PA_SER2 0x80 /* Choose between LAN or Ser2 port */
#endif /* _MACHINE_VIDEO_H */
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