2006-02-20 Thomas Schwinge <tschwinge@gnu.org>

Remove unused and unsupported code.  Consult the file
	`DEVELOPMENT' for details.  Partly based on suggestions by
	Gianluca Guida <glguida@gmail.com>.

	* i386/bogus/blit.h: Remove file.
	* i386/i386at/blit.c: Likewise.
	* i386/i386at/blitreg.h: Likewise.
	* i386/i386at/blituser.h: Likewise.
	* i386/i386at/blitvar.h: Likewise.
	* i386/i386at/conf.c: Don't include <blit.h> anymore and adopt all
	users of NBLIT as if it were always defined to `0'.
	* i386/i386at/kd.c: Likewise.
	(blit_init): Remove definition.
	(blit_present): Likewise and adopt all users as if it were always
	defined to `FALSE'.
	* i386/Makefile.in (i386at-files): Remove `blit.c'.

8 files changed, 2 insertions, 1572 deletions

diff --git a/i386/Makefile.in b/i386/Makefile.in
index fdd04f2..d22a1aa 100644
--- a/i386/Makefile.in
+++ b/i386/Makefile.in
@@ -70,7 +70,7 @@ endif
 
 
 # Source files for any i386 kernel
-i386at-files = autoconf.c blit.c conf.c cons_conf.c rtc.c \
+i386at-files = autoconf.c conf.c cons_conf.c rtc.c \
 	i386at_ds_routines.c immc.c int_init.c iopl.c kd.c kd_event.c \
 	kd_mouse.c kd_queue.c model_dep.c pic_isa.c
 i386-files = ast_check.c db_disasm.c db_interface.c db_trace.c debug_i386.c \
diff --git a/i386/bogus/blit.h b/i386/bogus/blit.h
deleted file mode 100644
index 1471edf..0000000
--- a/i386/bogus/blit.h
+++ /dev/null
@@ -1 +0,0 @@
-#define NBLIT 0
diff --git a/i386/i386at/blit.c b/i386/i386at/blit.c
deleted file mode 100644
index 32cc0a2..0000000
--- a/i386/i386at/blit.c
+++ /dev/null
@@ -1,948 +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:         blit.c
- Description:  Device Driver for Bell Tech Blit card
-
- $ Header: $
-
- Copyright Ing. C. Olivetti & C. S.p.A. 1988, 1989.
- All rights reserved.
-********************************************************************** */
-/*
-  Copyright 1988, 1989 by Olivetti Advanced Technology Center, Inc.,
-Cupertino, California.
-
-		All Rights Reserved
-
-  Permission to use, copy, modify, and distribute this software and
-its documentation for any purpose and without fee is hereby
-granted, provided that the above copyright notice appears in all
-copies and that both the copyright notice and this permission notice
-appear in supporting documentation, and that the name of Olivetti
-not be used in advertising or publicity pertaining to distribution
-of the software without specific, written prior permission.
-
-  OLIVETTI DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE
-INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS,
-IN NO EVENT SHALL OLIVETTI BE LIABLE FOR ANY SPECIAL, INDIRECT, OR
-CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
-LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT,
-NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUR OF OR IN CONNECTION
-WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-*/
-
-/*
-  Copyright 1988, 1989 by Intel Corporation, Santa Clara, California.
-
-		All Rights Reserved
-
-Permission to use, copy, modify, and distribute this software and
-its documentation for any purpose and without fee is hereby
-granted, provided that the above copyright notice appears in all
-copies and that both the copyright notice and this permission notice
-appear in supporting documentation, and that the name of Intel
-not be used in advertising or publicity pertaining to distribution
-of the software without specific, written prior permission.
-
-INTEL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE
-INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS,
-IN NO EVENT SHALL INTEL BE LIABLE FOR ANY SPECIAL, INDIRECT, OR
-CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
-LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT,
-NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
-WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-*/
-
-#ifdef	MACH_KERNEL
-#include <sys/types.h>
-#include <device/errno.h>
-#else	/* MACH_KERNEL */
-#include <sys/types.h>
-#include <sys/errno.h>
-#include <sys/param.h>
-#include <sys/dir.h>
-#include <sys/signal.h>
-#include <sys/user.h>
-#endif	/* MACH_KERNEL */
-#include <vm/vm_kern.h>
-#include <mach/vm_param.h>
-#include <machine/machspl.h>
-
-#include <i386at/blitreg.h>
-#include <i386at/blitvar.h>
-#include <i386at/blituser.h>
-#include <i386at/kd.h>
-#include <i386at/kdsoft.h>
-
-#include <blit.h>
-
-
-/*
- * This driver really only supports 1 card, though parts of it were
- * written to support multiple cards.  If you want to finish the job
- * and really support multiple cards, then you'll have to:
- *
- * (1) make sure that driver functions pass around a pointer telling
- * which card they're talking about.
- *
- * (2) coordinate things with the kd driver, so that one card is used
- * for the console and the other is simply an additional display.
- */
-#define MAXBLITS	1
-
-#if	NBLIT > MAXBLITS
-/* oh, no, you don't want to do this...; */
-
-#else
-#if	NBLIT > 0
-
-#define AUTOINIT	0
-
-	/*
-	 *	Forward Declarations
-	 */
-static tiledesc();
-static loadall();
-
-#if	AUTOINIT
-int blitattach(), blitprobe();
-#endif
-
-int blitioctl(), blitopen(), blitclose(), blitmmap();
-
-
-static void setstatus();
-#define CARD_RESET		0
-#define CARD_MAPPED		1
-#define CARD_MAYBE_PRESENT	2
-#define CARD_PRESENT		3
-#define BIU_INIT		4
-#define UNUSED1			5
-#define DP_INIT			6
-#define UNUSED2			7
-
-
-#if	AUTOINIT
-struct mb_device *blitinfo[NBLIT];
-
-struct mb_driver blitdriver = {
-	blitprobe,
-	0,				/* slave routine */
-	blitattach,
-	0, 0, 0,			/* go, done, intr routines */
-	BLIT_MAPPED_SIZE,
-	"blit", blitinfo,		/* device info */
-	0, 0,				/* no controller */
-	0				/* no flags */
-					/* rest zeros */
-};
-#endif	/* AUTOINIT */
-
-
-/*
- * Per-card bookkeeping information for driver.
- *
- * "scrstrip" and "dpctlregs" point to data areas that are passed to
- * the Display Processor.  They are allocated out of the spare
- * graphics memory.  "scrstrip" is used to describe an entire screen.
- * "dpctlregs" contains assorted parameters for the display
- * controller.
- *
- * "firstfree" is an offset into the graphics memory.  Memory starting
- * there can be allocated by users.
- */
-
-struct blitsoft {
-	struct blitdev *blt;		/* ptr to mapped card */
-	caddr_t physaddr;		/* start of mapped card */
-	boolean_t open;			/* is device open? */
-	struct screen_descrip *scrstrip;
-	DPCONTROLBLK *dpctlregs;
-	int firstfree;
-} blitsoft[NBLIT];
-
-
-/*
- * The following array contains the initial settings for
- * the Display Processor Control Block Registers.
- * The video timing signals in this array are for the
- * Bell Technologies Blit Express running in 1664 x 1200 x 1 mode.
- * Please treat as read-only.
- */
-
-DPCONTROLBLK blit_mparm = {
-	DP_DSP_ON,			/* video status */
-	0x00ff,				/* interrupt mask - all disabled */
-	0x0010,				/* trip point */
-	0x00ff,				/* frame interrupt interval */
-	0x0000,				/* reserved */
-	CRTM_NONINTER |	CRTM_SUPHIGH_SPEED, /* CRT controller mode */
-	41,				/* horizontal synch stop */
-	57,				/* horiz field start */
-	265,				/* horiz field stop */
-	265,				/* line length */
-	15,				/* vert synch stop */
-	43,				/* vert field start */
-	1243,				/* vert field stop */
-	1244,				/* frame length */
-	0x0000, 0x0000,			/* descriptor pointer */
-	0x0000,				/* reserved */
-	0x0101,				/* x, y zoom factors */
-	0x0000,				/* FldColor */
-	0x00ff,				/* BdrColor */
-	0x0000,				/* 1Bpp Pad */
-	0x0000,				/* 2Bpp Pad */
-	0x0000,				/* 4Bpp Pad */
-	DP_CURSOR_CROSSHAIR,		/* cursor style & mode */
-	0x00A0, 0x0050,			/* cursor x & y loc. */
-	/* cursor pattern */
-	0xfffe, 0xfffc, 0xc018, 0xc030, 0xc060, 0xc0c0, 0xc0c0, 0xc060,
-	0xc430, 0xce18, 0xdb0c, 0xf186, 0xe0c3, 0xc066, 0x803c, 0x0018
-};
-
-void blitreboot();
-
-/***********
- *
- * Initialization.
- *
- ***********/
-
-
-/*
- * Probe - is the board there?
- *
- * in:	reg = start of mapped Blit memory.
- *
- * out: returns size of mapped Blit memory if the board is present,
- *	0 otherwise.
- *
- * effects: if the board is present, it is reset and left visible in
- *	Unix mode.
- */
-
-#if	AUTOINIT
-/*ARGSUSED*/
-int
-blitprobe(reg, unit)
-	caddr_t reg;
-	int unit;
-{
-	struct blitdev *blt = (struct blitdev *)reg;
-
-	if (blit_present())
-		return(BLIT_MAPPED_SIZE); /* go */
-	else
-		return(0);		/* no-go */
-}
-#endif	/* AUTOINIT */
-
-
-/*
- * Temporary initialization routine.  This will go away when we have
- * autoconfig.
- */
-
-blitinit()
-{
-	if (!blit_present())
-		return;
-
-	blit_init();
-}
-
-
-/*
- * Allocate needed objects from Blit's memory.
- */
-blit_memory_init(bs)
-	struct blitsoft *bs;
-{
-	struct blitdev *blt = bs->blt;
-	struct blitmem *bm = (struct blitmem *)blt->graphmem;
-	u_char *p = bm->spare;
-
-	if ((int)p % 2 == 1)
-		++p;
-
-	bs->scrstrip = (struct screen_descrip *)p;
-	p += sizeof(struct screen_descrip);
-	if ((int)p % 2 == 1)
-		++p;
-
-	bs->dpctlregs = (DPCONTROLBLK *)p;
-	p += sizeof(DPCONTROLBLK);
-	if ((int)p % 2 == 1)
-		++p;
-
-	/*
-	 * Note: if you use the 786 graphics processor for character
-	 * processing, you should copy the font from the ROM into
-	 * graphics memory and change font_start to point to it.
-	 * Otherwise, the 786 will have problems accessing the font.
-	 */
-
-	bs->firstfree = p - blt->graphmem;
-}
-
-
-/*
- * Reset the Blit board and leave it visible.
- */
-
-blit_reset_board()
-{
-	union blit_config_reg config;
-
-	config.byte = inb(BLIT_CONFIG_ADDR);
-	config.reg.reset = 1;
-	outb(BLIT_CONFIG_ADDR, config.byte);
-	config.reg.reset = 0;
-	config.reg.mode = BLIT_UNIX_MODE;
-	config.reg.invisible = BLIT_VISIBLE;
-	outb(BLIT_CONFIG_ADDR, config.byte);
-	setstatus(CARD_RESET);
-}
-
-
-#if	AUTOINIT
-/*
- * Attach - finish initialization by setting up the 786.
- */
-
-blitattach(md)
-	struct mb_device *md;
-{
-	struct blitdev *blt = (struct blitdev *)md->md_addr;
-
-	blit_init(xyz);
-}
-#endif	/* AUTOINIT */
-
-
-/*
- * Initialize Bus Interface Unit.
- */
-
-init_biu(blt)
-	struct blitdev *blt;
-{
-	WRITEREG8(blt, INTER_RELOC, 0);
-	WRITEREG8(blt, BIU_CONTROL, BIU_16BIT);
-
-	/* WRITEREG16(blt, DRAM_REFRESH, 0x003f); */
-	WRITEREG16(blt, DRAM_REFRESH, 0x0018);	/* refresh rate */
-	WRITEREG16(blt, DRAM_CONTROL,
-		    MEMROWS1 | FASTPG_INTERLV | HEIGHT_256K);
-	WRITEREG16(blt, DP_PRIORITY, (7 << 3) | 7); /* max pri */
-	WRITEREG16(blt, GP_PRIORITY, (1 << 3) | 1); /* almost min pri */
-	WRITEREG16(blt, EXT_PRIORITY, 5 << 3);
-
-	/* now freeze the settings */
-	WRITEREG16(blt, BIU_CONTROL, BIU_16BIT | BIU_WP1);
-
-	/* Put graphics processor into Poll state. */
-	WRITEREG16(blt, GP_OPCODE_REG, (OP_LINK|GECL));
-}
-
-
-/*
- * Initialize the Display Processor.
- * XXX - assumes only 1 card is installed, assumes monochrome display.
- */
-
-init_dp(bs)
-	struct blitsoft *bs;
-{
-	struct blitdev *blt = bs->blt;
-	struct blitmem *bm = (struct blitmem *)blt->graphmem;
-
-	/*
-	 * Set up strip header and tile descriptor for the whole
-	 * screen.  It's not clear why the C bit should be turned on,
-	 * but it seems to get rid of the nasty flickering you can get
-	 * by positioning an xterm window along the top of the screen.
-	 */
-	bs->scrstrip->strip.lines = BLIT_MONOHEIGHT - 1;
-	bs->scrstrip->strip.linkl = 0;
-	bs->scrstrip->strip.linkh = 0;
-	bs->scrstrip->strip.tiles = DP_C_BIT | (1 - 1);
-	tiledesc(&bs->scrstrip->tile,
-		 0, 0,			/* x, y */
-		 BLIT_MONOWIDTH,	/* width of strip */
-		 BLIT_MONOWIDTH,	/* width of bitmap */
-		 VM_TO_ADDR786(bm->fb.mono_fb, blt), /* the actual bitmap */
-		 1);			/* bits per pixel */
-
-	/* Copy into DP register block. */
-	*(bs->dpctlregs) = blit_mparm;
-	bs->dpctlregs->descl = DP_ADDRLOW(VM_TO_ADDR786(bs->scrstrip, blt));
-	bs->dpctlregs->desch = DP_ADDRHIGH(VM_TO_ADDR786(bs->scrstrip, blt));
-
-	/* Load the DP with the register block */
-	loadall(blt, bs->dpctlregs);
-}
-
-
-/*
- * Fill in a tile descriptor.
- */
-
-static
-tiledesc(tile, x, y, w, ww, adx, bpp)
-	TILEDESC *tile;			/* pointer to tile descriptor */
-	int x;				/* starting x in bitmap */
-	int y;				/* starting y in bitmap */
-	int w;				/* width of strip (in bits_) */
-	int ww;				/* actual width of bitmap (bits) */
-	addr786_t adx;			/* start of bitmap */
-	int bpp;			/* bits per pixel */
-{
-	u_short bm_width;
-	short rghtp;
-	short adr_left, adr_right;
-	addr786_t bmstadr;
-	u_short start_stop_bit;
-
-	bm_width = 2 * (((ww + 1) * bpp) / 16);
-	rghtp = x + w - 1;
-	adr_left = ((x * bpp) / 16) * 2;
-	adr_right = ((rghtp * bpp) / 16) * 2;
-	bmstadr = (ww * y) + adr_left + (int)adx;
-	start_stop_bit = ((((16 - 1) - ((x * bpp) % 16)) << 4) +
-			((16 - ((rghtp + 1) * bpp) % 16) % 16) +
-			(bpp << 8));
-
-	tile->bitmapw = bm_width;
-	tile->meml = DP_ADDRLOW(bmstadr);
-	tile->memh = DP_ADDRHIGH(bmstadr);
-	tile->bppss = start_stop_bit;
-	tile->fetchcnt = adr_right - adr_left;
-	tile->flags = 0;
-}
-
-
-/*
- * Cause the Display Processor to load its Control Registers from
- * "vm_addr".
- */
-
-static
-loadall(blt, vm_addr)
-struct blitdev *blt;
-DPCONTROLBLK *vm_addr;
-{
-	addr786_t blit_addr = VM_TO_ADDR786(vm_addr, blt);
-	int i;
-
-	/* set up dp address */
-	WRITEREG16(blt, DP_PARM1_REG, DP_ADDRLOW(blit_addr));
-	WRITEREG16(blt, DP_PARM2_REG, DP_ADDRHIGH(blit_addr));
-
-	/* set blanking video */
-	WRITEREG16(blt, DEF_VIDEO_REG, 0);
-
-	/* load opcode to start dp */
-	WRITEREG16(blt, DP_OPCODE_REG, DP_LOADALL);
-
-	/* wait for acceptance */
-	for (i = 0; i < DP_RDYTIMEOUT; ++i)
-		if (READREG(blt, DP_OPCODE_REG) & DECL)
-			break;
-
-	if (i >= DP_RDYTIMEOUT) {
-		printf("Blit Display Processor timeout (loading registers)\n");
-	hang:
-		goto hang;
-	}
-
-#ifdef	notdef
-	/* wait for acceptance */
-	CDELAY((READREG(blt, DP_OPCODE_REG) & DECL) != 0, DP_RDYTIMEOUT);
-	if ((READREG(blt, DP_OPCODE_REG) & DECL) == 0) {
-		printf("Blit Display Processor timeout (loading registers)\n");
-	hang:
-		goto hang;
-	}
-#endif	/* notdef */
-}
-
-
-/*
- * blit_present: returns YES if Blit is present.  For the first call,
- * the hardware is probed.  After that, a flag is used.
- * Sets blitsoft[0].blt and blitsoft[0].physaddr.
- */
-
-#define TEST_BYTE	0xa5		/* should not be all 0's or 1's */
-
-boolean_t
-blit_present()
-{
-	static boolean_t present = FALSE;
-	static boolean_t initialized = FALSE;
-	struct blitdev *blt;
-	boolean_t blit_rom_ok();
-	struct blitdev *mapblit();
-	void freeblit();
-
-	/*
-	 * We set "initialized" early on so that if the Blit init. code
-	 * fails, kdb will still be able to use the EGA or VGA display
-	 * (if present).
-	 */
-	if (initialized)
-		return(present);
-	initialized = TRUE;
-
-	blit_reset_board();
-	blt = mapblit((caddr_t)BLIT_BASE_ADDR, BLIT_MAPPED_SIZE);
-	setstatus(CARD_MAPPED);
-	if (blt == NULL)
-		panic("blit: can't map display");
-	blt->graphmem[0] = TEST_BYTE;
-	present = FALSE;
-	if (blt->graphmem[0] == TEST_BYTE) {
-		setstatus(CARD_MAYBE_PRESENT);
-		present = blit_rom_ok(blt);
-	}
-	if (present) {
-		blitsoft[0].blt = blt;
-		blitsoft[0].physaddr = (caddr_t)BLIT_BASE_ADDR;
-		setstatus(CARD_PRESENT);
-	}
-	else
-		freeblit((vm_offset_t)blt, BLIT_MAPPED_SIZE);
-	return(present);
-}
-
-#undef TEST_BYTE
-
-
-/*
- * mapblit: map the card into kernel vm and return the (virtual)
- * address.
- */
-struct blitdev *
-mapblit(physaddr, length)
-caddr_t physaddr;			/* start of card */
-int length;				/* num bytes to map */
-{
-	vm_offset_t vmaddr;
-#ifdef	MACH_KERNEL
-	vm_offset_t io_map();
-#else	/* MACH_KERNEL */
-	vm_offset_t pmap_map_bd();
-#endif	/* MACH_KERNEL */
-
-	if (physaddr != (caddr_t)trunc_page(physaddr))
-		panic("Blit card not on page boundary");
-
-#ifdef	MACH_KERNEL
-	vmaddr = io_map((vm_offset_t)physaddr, length);
-	if (vmaddr == 0)
-#else	/* MACH_KERNEL */
-	if (kmem_alloc_pageable(kernel_map,
-				&vmaddr, round_page(BLIT_MAPPED_SIZE))
-							!= KERN_SUCCESS)
-#endif	/* MACH_KERNEL */
-		panic("can't alloc VM for Blit card");
-
-	(void)pmap_map_bd(vmaddr, (vm_offset_t)physaddr,
-			(vm_offset_t)physaddr+length,
-			VM_PROT_READ | VM_PROT_WRITE);
-	return((struct blitdev *)vmaddr);
-}
-
-
-/*
- * freeblit: free card from memory.
- * XXX - currently a no-op.
- */
-void
-freeblit(va, length)
-vm_offset_t va;				/* virt addr start of card */
-int length;
-{
-}
-
-
-/*
- * blit_init: initialize globals & hardware, and set cursor.  Could be
- * called twice, once as part of kd initialization and once as part of
- * blit initialization.  Should not be called before blit_present() is
- * called.
- */
-
-void
-blit_init()
-{
-	static boolean_t initialized = FALSE;
-	struct blitmem *gmem;		/* start of blit graphics memory */
-	int card;
-	void getfontinfo(), clear_blit();
-
-	if (initialized)
-		return;
-
-	for (card = 0; card < NBLIT; ++card) {
-		if (card > 0) {
-			blitsoft[card].blt = NULL;
-			blitsoft[card].physaddr = NULL;
-		}
-		blitsoft[card].open = FALSE;
-		blitsoft[card].scrstrip = NULL;
-		blitsoft[card].dpctlregs = NULL;
-		blitsoft[card].firstfree = 0;
-	}
-
-	/*
-	 * blit_memory_init allocates memory used by the Display Processor,
-	 * so it comes before the call to init_dp.  blit_memory_init
-	 * potentially copies the font from ROM into the graphics memory,
-	 * so it comes after the call to getfontinfo.
-	 */
-	getfontinfo(blitsoft[0].blt);	/* get info & check assumptions */
-	blit_memory_init(&blitsoft[0]);
-
-	/* init 786 */
-	init_biu(blitsoft[0].blt);
-	setstatus(BIU_INIT);
-	init_dp(&blitsoft[0]);
-	setstatus(DP_INIT);
-
-	gmem = (struct blitmem *)blitsoft[0].blt->graphmem;
-	vid_start = gmem->fb.mono_fb;
-	kd_lines = 25;
-	kd_cols = 80;
-	kd_attr = KA_NORMAL;
-
-	/*
-	 * Use generic bitmap routines, no 786 assist (see
-	 * blit_memory_init).
-	 */
-	kd_dput = bmpput;
-	kd_dmvup = bmpmvup;
-	kd_dmvdown = bmpmvdown;
-	kd_dclear = bmpclear;
-	kd_dsetcursor = bmpsetcursor;
-	kd_dreset = blitreboot;
-
-	clear_blit(blitsoft[0].blt);
-	(*kd_dsetcursor)(0);
-
-	initialized = TRUE;
-}
-
-
-/*
- * blit_rom_ok: make sure we're looking at the ROM for a monochrome
- * Blit.
- */
-
-boolean_t
-blit_rom_ok(blt)
-	struct blitdev *blt;
-{
-	short magic;
-	short bpp;
-
-	magic = READROM(blt->eprom, EP_MAGIC1);
-	if (magic != EP_MAGIC1_VAL) {
-#ifdef notdef
-		printf("blit: magic1 bad (0x%x)\n", magic);
-#endif
-		return(FALSE);
-	}
-	magic = READROM(blt->eprom, EP_MAGIC2);
-	if (magic != EP_MAGIC2_VAL) {
-#ifdef notdef
-		printf("blit: magic2 bad (0x%x)\n", magic);
-#endif
-		return(FALSE);
-	}
-	bpp = READROM(blt->eprom, EP_BPP);
-	if (bpp != 1) {
-#ifdef notdef
-		printf("blit: not monochrome board (bpp = 0x%x)\n", bpp);
-#endif
-		return(FALSE);
-	}
-
-	return(TRUE);
-}
-
-
-/*
- * getfontinfo: get information about the font and make sure that
- * our simplifying assumptions are valid.
- */
-
-void
-getfontinfo(blt)
-	struct blitdev *blt;
-{
-	u_char *rom = blt->eprom;
-	short fontoffset;
-	short pick_cursor_height();
-
-	fb_width = BLIT_MONOWIDTH;
-	fb_height = BLIT_MONOHEIGHT;
-	chars_in_font = READROM(rom, EP_NUMCHARS);
-	char_width = READROM(rom, EP_CHARWIDTH);
-	char_height = READROM(rom, EP_CHARHEIGHT);
-	fontoffset = READROM(rom, EP_FONTSTART);
-	xstart = READROM(rom, EP_XSTART);
-	ystart = READROM(rom, EP_YSTART);
-	char_black = BLIT_BLACK_BYTE;
-	char_white = BLIT_WHITE_BYTE;
-
-	font_start = rom + fontoffset;
-
-	/*
-	 * Check byte-alignment assumption.
-	 * XXX - does it do any good to panic when initializing the
-	 * console driver?
-	 */
-	if (char_width % 8 != 0)
-		panic("blit: char width not integral num of bytes");
-	if (xstart % 8 != 0) {
-		/* move it to a more convenient location */
-		printf("blit: console corner moved.\n");
-		xstart = 8 * (xstart/8);
-	}
-
-	cursor_height = pick_cursor_height();
-	char_byte_width = char_width / 8;
-	fb_byte_width = BLIT_MONOWIDTH / 8;
-	font_byte_width = char_byte_width * chars_in_font;
-}
-
-
-/*
- * pick_cursor_height: pick a size for the cursor, based on the font
- * size.
- */
-
-short
-pick_cursor_height()
-{
-	int scl_avail;			/* scan lines available for console */
-	int scl_per_line;		/* scan lines per console line */
-
-	/*
-	 * scan lines avail. = total lines - top margin;
-	 * no bottom margin (XXX).
-	 */
-	scl_avail = BLIT_MONOHEIGHT - ystart;
-
-	scl_per_line = scl_avail / kd_lines;
-	if (scl_per_line < char_height)
-		return(1);
-	else
-		return(scl_per_line - char_height);
-}
-
-
-/*
- * setstatus: Give a status indication to the user.  Ideally, we'd
- * just set the 3 user-controlled LED's.  Unfortunately, that doesn't
- * seem to work.  So, we ring the bell.
- */
-
-static void
-setstatus(val)
-	int val;
-{
-	union blit_diag_reg diag;
-
-	diag.byte = inb(BLIT_DIAG_ADDR);
-	diag.reg.led0 = (val & 1) ? BLIT_LED_ON : BLIT_LED_OFF;
-	diag.reg.led1 = (val & 2) ? BLIT_LED_ON : BLIT_LED_OFF;
-	diag.reg.led2 = (val & 4) ? BLIT_LED_ON : BLIT_LED_OFF;
-	outb(BLIT_DIAG_ADDR, diag.byte);
-
-#ifdef DEBUG
-	for (val &= 7; val > 0; val--) {
-		feep();
-		pause();
-	}
-	for (val = 0; val < 10; val++) {
-		pause();
-	}
-#endif
-}
-
-
-
-/***********
- *
- * Other (non-initialization) routines.
- *
- ***********/
-
-
-/*
- * Open - Verify that minor device is OK and not in use, then clear
- * the screen.
- */
-
-/*ARGSUSED*/
-int
-blitopen(dev, flag)
-	dev_t dev;
-	int flag;
-{
-	void clear_blit();
-	int which = minor(dev);
-
-	if (!blit_present() || which >= NBLIT)
-		return(ENXIO);
-	if (blitsoft[which].open)
-		return(EBUSY);
-
-	clear_blit(blitsoft[which].blt);
-	blitsoft[which].open = TRUE;
-	return(0);			/* ok */
-}
-
-
-/*
- * Close - free any kernel memory structures that were allocated while
- * the device was open (currently none).
- */
-
-/*ARGSUSED*/
-blitclose(dev, flag)
-	dev_t dev;
-	int flag;
-{
-	int which = minor(dev);
-
-	if (!blitsoft[which].open)
-		panic("blit: closing not-open device??");
-	blitsoft[which].open = FALSE;
-}
-
-
-/*
- * Mmap.
- */
-
-/*ARGSUSED*/
-int
-blitmmap(dev, off, prot)
-	dev_t dev;
-	off_t off;
-	int prot;
-{
-	if ((u_int) off >= BLIT_MAPPED_SIZE)
-		return(-1);
-
-	/* Get page frame number for the page to be mapped. */
-	return(i386_btop(blitsoft[minor(dev)].physaddr + off));
-}
-
-
-/*
- * Ioctl.
- */
-
-#ifdef	MACH_KERNEL
-io_return_t blit_get_stat(dev, flavor, data, count)
-	dev_t		dev;
-	int		flavor;
-	int		*data;	/* pointer to OUT array */
-	unsigned int 	*count;	/* OUT */
-{
-	int	which = minor(dev);
-
-	switch (flavor) {
-	    case BLIT_1ST_UNUSED:
-		if (*count < 1)
-		    return (D_INVALID_OPERATION);
-		*data = blitsoft[which].firstfree;
-		*count = 1;
-		break;
-	    default:
-		return (D_INVALID_OPERATION);
-	}
-	return (D_SUCCESS);
-}
-#else	/* MACH_KERNEL */
-/*ARGSUSED*/
-int
-blitioctl(dev, cmd, data, flag)
-	dev_t dev;
-	int cmd;
-	caddr_t data;
-	int flag;
-{
-	int which = minor(dev);
-	int err = 0;
-
-	switch (cmd) {
-	case BLIT_1ST_UNUSED:
-		*(int *)data = blitsoft[which].firstfree;
-		break;
-	default:
-		err = ENOTTY;
-	}
-
-	return(err);
-}
-#endif	/* MACH_KERNEL */
-
-/*
- * clear_blit: clear blit's screen.
- */
-
-void
-clear_blit(blt)
-	struct blitdev *blt;
-{
-	(*kd_dclear)(0, kd_lines*kd_cols, KA_NORMAL);
-}
-
-/*
- * Put the board into DOS mode in preparation for rebooting.
- */
-
-void
-blitreboot()
-{
-	union blit_config_reg config;
-
-	config.byte = inb(BLIT_CONFIG_ADDR);
-	config.reg.mode = BLIT_DOS_MODE;
-	config.reg.invisible = BLIT_VISIBLE;
-	outb(BLIT_CONFIG_ADDR, config.byte);
-}
-
-#endif	/* NBLIT > 0 */
-#endif	/* NBLIT > MAXBLITS */
diff --git a/i386/i386at/blitreg.h b/i386/i386at/blitreg.h
deleted file mode 100644
index 7226aca..0000000
--- a/i386/i386at/blitreg.h
+++ /dev/null
@@ -1,404 +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:         blitreg.h
- Description:  Bell Tech Blit card hardware description
-
- $ Header: $
-
- Copyright Ing. C. Olivetti & C. S.p.A. 1988, 1989.
- All rights reserved.
-********************************************************************** */
-/*
-  Copyright 1988, 1989 by Olivetti Advanced Technology Center, Inc.,
-Cupertino, California.
-
-		All Rights Reserved
-
-  Permission to use, copy, modify, and distribute this software and
-its documentation for any purpose and without fee is hereby
-granted, provided that the above copyright notice appears in all
-copies and that both the copyright notice and this permission notice
-appear in supporting documentation, and that the name of Olivetti
-not be used in advertising or publicity pertaining to distribution
-of the software without specific, written prior permission.
-
-  OLIVETTI DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE
-INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS,
-IN NO EVENT SHALL OLIVETTI BE LIABLE FOR ANY SPECIAL, INDIRECT, OR
-CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
-LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT,
-NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUR OF OR IN CONNECTION
-WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-*/
-
-/* 
- * Some code taken from Bob Glossman's 1987 "minimal Blit Express 
- * driver", copyright unknown.  Probably copyright Intel, too.
- */
-
-
-#ifndef	blitreg_DEFINED
-#define blitreg_DEFINED
-
-
-/* 
- * Registers accessible through AT I/O space.  These addresses can be 
- * changed by changing bits 4-8 of the Blit's DIP switch.
- */
-
-#define BLIT_CONFIG_ADDR	0x304
-#define BLIT_DIAG_ADDR		0x306
-
-#if	defined(sun386) || defined(i386)
-
-
-/* 
- * Layout of Blit control register.
- */
-
-union blit_config_reg {
-	struct config_bits {
-		unsigned dos_segment : 4;
-		unsigned reset : 1;
-		unsigned mode : 1;
-#define BLIT_UNIX_MODE	1
-#define BLIT_DOS_MODE	0
-		unsigned invisible : 1;
-#define BLIT_INVISIBLE	1
-#define BLIT_VISIBLE	0
-		unsigned unused : 1;
-	} reg;
-	u_char byte;
-};
-
-
-/* 
- * Blit Diag register.
- * The UNIX base address is currently hardwired to BLIT_BASE_ADDR.
- */
-
-#define BLIT_BASE_ADDR	0xd80000	/* base of blit memory (phys addr) */
-
-union blit_diag_reg {
-	struct diag_bits {
-		unsigned unix_base_addr : 5; /* phys addr (ignored) */
-		unsigned led0 : 1;
-		unsigned led1 : 1;
-		unsigned led2 : 1;
-#define BLIT_LED_ON	1
-#define BLIT_LED_OFF	0
-	} reg;
-	u_char byte;
-};
-
-#endif	/* sun386 || i386 */
-
-
-/* 
- * Graphics memory, 786 registers, static RAM, and EPROM, all 
- * accessible through mapped memory.
- */
-
-#define BLIT_MONOWIDTH	1664
-#define BLIT_MONOHEIGHT	1200
-#define BLIT_MONOFBSIZE	((BLIT_MONOWIDTH*BLIT_MONOHEIGHT)/8)
-					/* byte size of monochrome fb */
-
-#define BLIT_MEMSIZE	0x100000	/* num bytes mapped graphics memory */
-
-#define BLIT_REGSIZE	128		/* bytes taken by 786 registers */
-#define BLIT_REGPAD	(0x10000  - BLIT_REGSIZE)
-					/* padding between reg's and SRAM */
-
-#define BLIT_SRAMSIZE	0x4000		/* num bytes mapped for SRAM */
-#define BLIT_SRAMPAD	(0x10000 - BLIT_SRAMSIZE)
-					/* padding between SRAM and EPROM */
-
-#define BLIT_EPROMSIZE	0x20000		/* num bytes mapped for EPROM */
-
-
-/*      
- * Layout of the Blit's mapped memory.  The physical address is (or
- * will be, eventually) determined by the Diag register (above).
- */
-
-struct  blitdev {
-	u_char graphmem[BLIT_MEMSIZE];
-	u_char reg786[BLIT_REGSIZE];
-	u_char pad1[BLIT_REGPAD];
-	u_char sram[BLIT_SRAMSIZE];
-	u_char pad2[BLIT_SRAMPAD];
-	u_char eprom[BLIT_EPROMSIZE];
-};
-
-#define BLIT_MAPPED_SIZE	sizeof(struct blitdev)
-
-
-/*
- * Offsets for 786 registers (i.e., indices into reg786[]).
- */
-
-#define INTER_RELOC	0x00	/* Internal Relocation Register */
-#define BIU_CONTROL	0x04	/* BIU Control Register */
-#define DRAM_REFRESH	0x06	/* DRAM Refresh control register */
-#define DRAM_CONTROL    0x08	/* DRAM control register */
-#define DP_PRIORITY	0x0A	/* DP priority register */
-#define GP_PRIORITY	0x0C	/* GP priority register*/
-#define EXT_PRIORITY	0x0E	/* External Priority Register*/
-#define GP_OPCODE_REG	0x20	/* GP opcode register */
-#define GP_PARM1_REG	0x22	/* GP Parameter 1 Register */
-#define GP_PARM2_REG	0x24	/* GP Parameter 2 Register*/
-#define GP_STAT_REG	0x26	/* GP Status Register*/
-#define DP_OPCODE_REG	0x40	/* DP opcode register */
-#define DP_PARM1_REG	0x42	/* DP Parameter 1 Register*/
-#define DP_PARM2_REG	0x44	/* DP Parameter 2 Register*/
-#define DP_PARM3_REG	0x46	/* DP Parameter 3 Register*/
-#define DP_STAT_REG	0x48	/* DP Status Register*/
-#define DEF_VIDEO_REG	0x4A	/* DP Default Video Register*/
-
-
-/* 
- * 786 BIU Control Register values.
- */
-
-#define BIU_WP1		0x02		/* Write Protect One; 1 = on */
-#define BIU_16BIT	0x10	/* access 786 registers as words; 0 = bytes */
-
-
-/* 
- * 786 DRAM/VRAM Control Register values.
- */
-
-/* RW bits */
-#define MEMROWS1	0
-#define MEMROWS2	0x20
-#define MEMROWS3	0x40
-#define MEMROWS4	0x60
-
-/* DC bits */
-#define PG_NONINTERLV		0
-#define FASTPG_NONINTERLV	0x10
-#define PG_INTERLV		0x08
-#define FASTPG_INTERLV		0x18
-
-/* HT bits */
-#define HEIGHT_8K	0
-#define HEIGHT_16K	0x1
-#define HEIGHT_32K	0x2
-#define HEIGHT_64K	0x3
-#define HEIGHT_128K	0x4
-#define HEIGHT_256K	0x5
-#define HEIGHT_512K	0x6
-#define HEIGHT_1M	0x7
-
-
-/* 
- * 786 Graphics Processor opcodes.
- */
-
-#define GECL	0x001			/* end of command list */
-#define OP_LINK	0x200			/* LINK - "link next cmd" */
-
-
-/* 
- * 786 Display Processor opcodes.
- */
-
-#define DECL	1			/* end of list */
-#define DP_LOADALL	0x500
-
-
-/* 
- * Macros for accessing 786 registers (see BIU_16BIT) and EPROM.
- */
-
-#define WRITEREG8(base,offset,val) \
-	(base)->reg786[(offset)] = (val) & 0xff, \
-	(base)->reg786[(offset)+1] = ((val) & 0xff00) >> 8
-
-#define WRITEREG16(base,offset,val) \
-	(*((u_short *)((base)->reg786+(offset)))) = (val)
-
-#define READREG(base,offset) \
-	(*((u_short *)(((base)->reg786+(offset)))))
-
-#define WRITEROM(romp,offset,val) \
-	(*((u_short *)((romp)+(offset)))) = (val)
-
-#define READROM(romp,offset) \
-	(*((u_short *)(((romp)+(offset)))))
-
-
-/* 
- * Layout of Display Processor Control Block Registers.  This block is 
- * allocated somewhere in the Blit's graphics memory, and a pointer to 
- * it is passed to the Display Processor.
- * 
- * NOTE: The 786 only sees the memory mapped by the Blit.  Thus all 
- * addresses passed to the 786 are relative to the start of the Blit's 
- * mapped memory.
- */
-
-typedef int addr786_t;			/* 0 = start of Blit mapped memory */
-
-typedef struct {
-	u_short vidstat;		/* video status */
-	u_short intrmask;		/* interrupt mask */
-	u_short trip_point;
-	u_short frame_intr;		/* frame interrupt */
-	u_short reserved1;
-	u_short crtmode;		/* CRT controller mode */
-	u_short hsyncstop;		/* monitor parameters */
-	u_short hfldstart;
-	u_short hfldstop;
-	u_short linelength;
-	u_short vsyncstop;
-	u_short vfldstart;
-	u_short vfldstop;
-	u_short vframelen;
-	u_short descl;			/* descriptor pointer low part */
-	u_short desch;			/* descriptor pointer high part */
-	u_short reserved2;
-	u_short xyzoom;
-	u_short fldcolor;
-	u_short bordercolor;
-	u_short bpp_pad1;
-	u_short bpp_pad2;
-	u_short bpp_pad4;
-	u_short csrmode;		/* & CsrPad */
-	u_short cursorx;		/* cursor x location */
-	u_short cursory;		/* cursor y location */
-	u_short cursorpat[16];		/* cursor pattern */
-} DPCONTROLBLK;
-
-
-/* 
- * Values for 786 Display Processor Control Block Registers.
- */
-
-/* video status */
-#define DP_DSP_ON	1		/* display on */
-#define DP_CSR_ON	2		/* cursor on */
-
-/* CRT controller modes */
-#define CRTM_NONINTER		0	/* non-interlaced */
-#define CRTM_INTERLCD		0x40	/* interlaced */
-#define CRTM_INTERSYN		0x60	/* interlaced - sync */
-#define CRTM_WIN_STAT_ENABLE	0x10	/* window status enable */
-#define CRTM_SYNC_SLAVE_MODE	0x08	/* on = operate as slave */
-#define CRTM_BLANK_SLAVE_MODE	0x04	/* on = Blank is input */
-#define CRTM_NORMAL_SPEED	0x00
-#define CRTM_HIGH_SPEED		0x01
-#define CRTM_VRYHIGH_SPEED	0x02
-#define CRTM_SUPHIGH_SPEED	0x03
-
-/* cursor style */
-#define DP_CURSOR_16X16		0x8000	/* off = 8x8 */
-#define DP_CURSOR_CROSSHAIR	0x4000	/* off = block cursor */
-#define DP_CURSOR_TRANSPRNT	0x2000	/* off = cursor is opaque */
-
-
-/* 
- * Types for dealing with 786 Display Processor.
- */
-
-typedef struct {
-	u_short lines;			/* (lines in strip) - 1 */
-	u_short linkl;			/* link to next strip low part */
-	u_short linkh;			/* link to next strip high part */
-	u_short tiles;			/* C bit, (tiles in strip) - 1 */
-} STRIPHEADER;
-
-/* 
- * If the C bit is turned on, the display processor "automatically 
- * displays the background color" for areas not defined by the strips.
- * See section 3.1.3.2 of the '786 User's Manual.
- */
-#define DP_C_BIT	0x8000
-
-typedef struct {
-	u_short bitmapw;		/* width of bitmap */
-	u_short meml;			/* btb mem address low part */
-	u_short memh;			/* btb mem address high part */
-	u_short bppss;			/* bpp, start and stop fields */
-	u_short fetchcnt;		/* fetch count */
-	u_short flags;			/* various flags */
-} TILEDESC;
-
-
-/* 
- * Macros for encoding addresses for strip headers & tile descriptors.
- * addr786 is relative to the start of the Blit's mapped memory.
- */
-
-#define DP_ADDRLOW(addr786)		(((int)(addr786)) & 0xffff)
-#define DP_ADDRHIGH(addr786)		((((int)(addr786)) >> 16) & 0x3f)
-
-
-/*
- * Byte offsets to useful data words within the EPROM.
- */
-
-#define EP_MAGIC1	0
-#define EP_MAGIC1_VAL	0x7856
-#define EP_MAGIC2	2
-#define EP_MAGIC2_VAL	0x6587
-#define EP_DPSTART	4		/* start of DP ctl block */
-					/* (0 = start of EPROM) */
-#define EP_DPLEN	6		/* byte length of DP control block */
-
-#define EP_FONTSTART	8		/* start of font */
-					/* (0 = start of EPROM) */
-#define EP_FONTLEN	10		/* byte length of font */
-#define EP_CHARWIDTH	12		/* bit width of each char in font */
-#define EP_CHARHEIGHT	14
-#define EP_NUMCHARS	16		/* num chars in font */
-
-/* where in the bitmap the 25x80 console screen starts */
-#define EP_XSTART	18
-#define EP_YSTART	20
-
-#define EP_SCREENWIDTH	22		/* pixels per scan line */
-#define EP_SCREENHEIGHT	24		/* number of scan lines */
-
-#define EP_FIXUP_X	26		/* magic numbers for displaying */
-#define EP_FIXUP_Y	28		/* hardware cursor */
-
-#define EP_BPP		30		/* bits per pixel */
-
-
-/*
- * Miscellaneous.
- */
-
-#define BLIT_BLACK_BIT	0		/* try saying that 3 times fast */
-#define BLIT_WHITE_BIT	1
-#define BLIT_BLACK_BYTE	0
-#define BLIT_WHITE_BYTE	0xff
-
-
-#endif	/* blitreg_DEFINED */
diff --git a/i386/i386at/blituser.h b/i386/i386at/blituser.h
deleted file mode 100644
index 0ebcfff..0000000
--- a/i386/i386at/blituser.h
+++ /dev/null
@@ -1,73 +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:         blituser.h
- Description:  User-program definitions for Bell Tech Blit card
-
- Copyright Ing. C. Olivetti & C. S.p.A. 1988, 1989.
- All rights reserved.
-********************************************************************** */
-/*
-  Copyright 1988, 1989 by Olivetti Advanced Technology Center, Inc.,
-Cupertino, California.
-
-		All Rights Reserved
-
-  Permission to use, copy, modify, and distribute this software and
-its documentation for any purpose and without fee is hereby
-granted, provided that the above copyright notice appears in all
-copies and that both the copyright notice and this permission notice
-appear in supporting documentation, and that the name of Olivetti
-not be used in advertising or publicity pertaining to distribution
-of the software without specific, written prior permission.
-
-  OLIVETTI DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE
-INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS,
-IN NO EVENT SHALL OLIVETTI BE LIABLE FOR ANY SPECIAL, INDIRECT, OR
-CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
-LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT,
-NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUR OF OR IN CONNECTION
-WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-*/
-
-#ifndef	_BLITUSER_
-#define _BLITUSER_
-
-#include <sys/ioctl.h>
-
-/*
- * Ioctl's.
- */
-
-/* 
- * BLIT_1ST_UNUSED returns a byte offset into the Blit graphics 
- * memory.  The user is free to allocate and use any graphics memory 
- * starting at that offset.
- */
-
-#define BLIT_1ST_UNUSED	_IOR('b', 1, int)
-
-#endif	/* _BLITUSER_ */
diff --git a/i386/i386at/blitvar.h b/i386/i386at/blitvar.h
deleted file mode 100644
index 58401f3..0000000
--- a/i386/i386at/blitvar.h
+++ /dev/null
@@ -1,116 +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:         blitvar.h
- Description:  Definitions used by Blit driver other than h/w definition.
-
- $ Header: $
-
- Copyright Ing. C. Olivetti & C. S.p.A. 1988, 1989.
- All rights reserved.
-********************************************************************** */
-/*
-  Copyright 1988, 1989 by Olivetti Advanced Technology Center, Inc.,
-Cupertino, California.
-
-		All Rights Reserved
-
-  Permission to use, copy, modify, and distribute this software and
-its documentation for any purpose and without fee is hereby
-granted, provided that the above copyright notice appears in all
-copies and that both the copyright notice and this permission notice
-appear in supporting documentation, and that the name of Olivetti
-not be used in advertising or publicity pertaining to distribution
-of the software without specific, written prior permission.
-
-  OLIVETTI DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE
-INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS,
-IN NO EVENT SHALL OLIVETTI BE LIABLE FOR ANY SPECIAL, INDIRECT, OR
-CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
-LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT,
-NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUR OF OR IN CONNECTION
-WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-*/
-
-#include <i386at/blitreg.h>
-#include <sys/types.h>
-#include <mach/boolean.h>
-
-
-/* 
- * This is how we use the Blit's graphics memory.  The frame buffer 
- * goes at the front, and the rest is used for miscellaneous 
- * allocations.  Users can use the "spare" memory, but they should do 
- * an ioctl to find out which part of the memory is really free.
- */
-
-struct blitmem {
-	union blitfb {
-		u_char mono_fb[BLIT_MONOFBSIZE];
-		u_char color_fb[1];	/* place-holder */
-	} fb;
-	u_char spare[BLIT_MEMSIZE - sizeof(union blitfb)];
-};
-
-
-/*
- * Macro to get from blitdev pointer to monochrome framebuffer.
- */
-#define       BLIT_MONOFB(blt, fbptr) \
-	{ struct blitmem *mymem = (struct blitmem *)((blt)->graphmem); \
-	fbptr = mymem->fb.mono_fb; \
-	}
-
-
-/* 
- * Single-tile description that can be used to describe the entire 
- * screen. 
- */
-
-struct screen_descrip {
-	STRIPHEADER strip;
-	TILEDESC tile;
-};
-
-
-/* 
- * Number of microseconds we're willing to wait for display processor 
- * to load its command block.
- */
-
-#define DP_RDYTIMEOUT			1000000
-
-
-/* 
- * Conversion macros.
- */
-
-#define VM_TO_ADDR786(vmaddr, blit_base) \
-	((int)(vmaddr) - (int)(blit_base))
-
-
-extern boolean_t blit_present();
-extern void blit_init();
diff --git a/i386/i386at/conf.c b/i386/i386at/conf.c
index 2e62ca0..f36fcc5 100644
--- a/i386/i386at/conf.c
+++ b/i386/i386at/conf.c
@@ -69,16 +69,6 @@ extern int	lprgetstat(), lprsetstat(), lprportdeath();
 #define	lprname			"lpr"
 #endif	/* NLPR > 0 */
 
-#include <blit.h>
-#if NBLIT > 0
-extern int	blitopen(), blitclose(), blit_get_stat();
-extern vm_offset_t blitmmap();
-#define	blitname		"blit"
-
-extern int	mouseinit(), mouseopen(), mouseclose();
-extern int	mouseioctl(), mouseselect(), mouseread();
-#endif
-
 extern int	kbdopen(), kbdclose(), kbdread();
 extern int	kbdgetstat(), kbdsetstat();
 #define	kbdname			"kbd"
@@ -151,13 +141,6 @@ struct dev_ops	dev_name_list[] =
 	  nodev },
 #endif
 
-#if	NBLIT > 0
-	{ blitname,	blitopen,	blitclose,	nodev,
-	  nodev,	blit_get_stat,	nodev,		blitmmap,
-	  nodev,	nodev,		nodev,		0,
-	  nodev },
-#endif
-
 	{ mousename,	mouseopen,	mouseclose,	mouseread,
 	  nodev,	mousegetstat,	nulldev,	nomap,
 	  nodev,	nulldev,	nulldev,	0,
diff --git a/i386/i386at/kd.c b/i386/i386at/kd.c
index f2e8f15..cf03bc2 100644
--- a/i386/i386at/kd.c
+++ b/i386/i386at/kd.c
@@ -93,14 +93,6 @@ WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 #include <i386at/kdsoft.h>
 #include <cons.h>
 
-#include <blit.h>
-#if	NBLIT > 0
-#include <i386at/blitvar.h>
-#else
-#define blit_present()	FALSE
-#define blit_init()			/* nothing */
-#endif
-
 #define DEBUG	1			/* export feep() */
 
 #define DEFAULT		-1		/* see kd_atoi */
@@ -1200,10 +1192,7 @@ kdinit()
 	 * board specific initialization: set up globals and kd_dxxx
 	 * pointers, and synch displayed cursor with logical cursor.
 	 */
-	  if (blit_present())
-		blit_init();
-	  else
-		kd_xga_init();
+	kd_xga_init();
 
 	/* get rid of any garbage in output buffer */
 	if (inb(K_STATUS) & K_OBUF_FUL)