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Diffstat (limited to 'chips/bt478.c')
| -rw-r--r-- | chips/bt478.c | 243 |
1 files changed, 0 insertions, 243 deletions
diff --git a/chips/bt478.c b/chips/bt478.c deleted file mode 100644 index 841728f..0000000 --- a/chips/bt478.c +++ /dev/null @@ -1,243 +0,0 @@ -/* - * Mach Operating System - * Copyright (c) 1991,1990,1989 Carnegie Mellon University - * All Rights Reserved. - * - * Permission to use, copy, modify and distribute this software and its - * documentation is hereby granted, provided that both the copyright - * notice and this permission notice appear in all copies of the - * software, derivative works or modified versions, and any portions - * thereof, and that both notices appear in supporting documentation. - * - * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" - * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR - * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. - * - * Carnegie Mellon requests users of this software to return to - * - * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU - * School of Computer Science - * Carnegie Mellon University - * Pittsburgh PA 15213-3890 - * - * any improvements or extensions that they make and grant Carnegie Mellon - * the rights to redistribute these changes. - */ -/* - * File: bt478.c - * Author: Alessandro Forin, Carnegie Mellon University - * Date: 9/90 - * - * Routines for the bt478 Cursor/RAMDAC chip - */ - -#include <platforms.h> - -#include <chips/bt478.h> -#include <chips/screen.h> - -#ifdef DECSTATION - -typedef struct { - volatile unsigned char addr_mapwa; - char pad0[3]; - volatile unsigned char addr_map; - char pad1[3]; - volatile unsigned char addr_mask; - char pad2[3]; - volatile unsigned char addr_mapra; - char pad3[3]; - volatile unsigned char addr_overwa; - char pad4[3]; - volatile unsigned char addr_over; - char pad5[3]; - volatile unsigned char addr_xxxx; - char pad6[3]; - volatile unsigned char addr_overra; - char pad7[3]; -} bt478_padded_regmap_t; - -#else /*DECSTATION*/ - -typedef bt478_regmap_t bt478_padded_regmap_t; -#define wbflush() - -#endif /*DECSTATION*/ - - -/* - * Cursor color - */ -static -bt478_load_cc(bt478, bg, fg) - register bt478_padded_regmap_t *bt478; - unsigned int *bg, *fg; -{ - register int i; - - /* See init function for gotchas */ - - bt478->addr_overwa = 4; - wbflush(); - for (i = 0; i < 3; i++) { - bt478->addr_over = (*bg++) >> 8; - wbflush(); - } - - bt478->addr_overwa = 8; - wbflush(); - bt478->addr_over = 0x00; - wbflush(); - bt478->addr_over = 0x00; - wbflush(); - bt478->addr_over = 0x7f; - wbflush(); - - bt478->addr_overwa = 12; - wbflush(); - for (i = 0; i < 3; i++) { - bt478->addr_over = (*fg++) >> 8; - wbflush(); - } - -} - - -bt478_cursor_color(bt478, color) - bt478_padded_regmap_t *bt478; - cursor_color_t *color; -{ - register int i; - register unsigned int *p; - - /* Do it twice, in case of collisions */ - - bt478_load_cc(bt478, color->Bg_rgb, color->Fg_rgb); - - p = color->Bg_rgb; - for (i = 0; i < 3; i++) { - bt478->addr_over = (*p++) >> 8; - wbflush(); - } - - p = color->Fg_rgb; - for (i = 0; i < 3; i++) { - bt478->addr_over = (*p++) >> 8; - wbflush(); - } - - bt478_load_cc(bt478, color->Bg_rgb, color->Fg_rgb); -} - -/* - * Color map - */ -bt478_load_colormap( regs, map) - bt478_padded_regmap_t *regs; - color_map_t *map; -{ - register int i; - - regs->addr_mapwa = 0; - wbflush(); - for (i = 0; i < 256; i++, map++) { - regs->addr_map = map->red; - wbflush(); - regs->addr_map = map->green; - wbflush(); - regs->addr_map = map->blue; - wbflush(); - } -} - -bt478_load_colormap_entry( regs, entry, map) - bt478_padded_regmap_t *regs; - color_map_t *map; -{ - regs->addr_mapwa = entry & 0xff; - wbflush(); - regs->addr_map = map->red; - wbflush(); - regs->addr_map = map->green; - wbflush(); - regs->addr_map = map->blue; - wbflush(); -} - -/* - * Video on/off (unused) - */ -bt478_video_on(pregs, up) - bt478_padded_regmap_t **pregs; -{ - (*pregs)->addr_mask = 0xff; -} - -bt478_video_off(pregs, up) - bt478_padded_regmap_t **pregs; -{ - (*pregs)->addr_mask = 0; -} - -/* - * Initialization - */ -static -bt478_overlay(regs, plane) - bt478_padded_regmap_t *regs; - unsigned char *plane; -{ - *plane = 0xff; - - /* Overlay planes 0 and 1 are wired zero, overlay plane 2 - is plane "B" of the cursor (second half of it), plane 3 - is plane "A" of the cursor. Soo, we get three colors - for the cursor, at map entries 4, 8 and 12 */ -# define ovv(i,r,g,b) \ - regs->addr_overwa = i; wbflush(); \ - regs->addr_over = r; wbflush(); \ - regs->addr_over = b; wbflush(); \ - regs->addr_over = g; wbflush(); - - ovv(4,0,0,0); ovv(8,0,0,0x7f); ovv(12,0xff,0xff,0xff); - -# undef ovv - - /* enable data input */ - regs->addr_mask = 0xff; -} - -bt478_init_bw_map(regs, plane) - bt478_padded_regmap_t *regs; -{ - register int i; - - /* Set overlay color registers */ - bt478_overlay(regs, plane); - - /* loadup vdac map */ -# define mvv(i,v) { \ - regs->addr_mapwa = i; wbflush(); \ - regs->addr_map = v; wbflush(); \ - regs->addr_map = v; wbflush(); \ - regs->addr_map = v; wbflush();} - - for (i = 0; i < 128; i++) mvv(i,0x00); - for (i = i; i < 256; i++) mvv(i,0xff); - -} - -bt478_init_color_map( regs, plane) - bt478_padded_regmap_t *regs; -{ - register int i; - - bt478_overlay(regs, plane); - - mvv(0,0); - mvv(1,0xff); - mvv(255,0xff); - -# undef mvv -} - |