## diffname pc/vgaet4000.c 1994/1201
## diff -e /dev/null /n/fornaxdump/1994/1201/sys/src/brazil/pc/vgaet4000.c
0a
#include "u.h"
#include "../port/lib.h"
#include "mem.h"
#include "dat.h"
#include "fns.h"
#include "../port/error.h"
#include <libg.h>
#include "screen.h"
#include "vga.h"
extern Bitmap gscreen;
extern Cursor curcursor;
static Lock et4000pagelock;
static ulong storage;
static Point hotpoint;
static void
setet4000page(int page)
{
uchar p;
p = page & 0x0F;
p |= p<<4;
outb(0x3CD, p);
p = (page & 0x30);
p |= p>>4;
outb(0x3CB, p);
}
static void
disable(void)
{
uchar imaF7;
outb(0x217A, 0xF7);
imaF7 = inb(0x217B) & ~0x80;
outb(0x217B, imaF7);
}
static void
enable(void)
{
uchar imaF7;
disable();
/*
* Configure CRTCB for Sprite, 64x64,
* CRTC pixel overlay.
*/
outb(0x217A, 0xEF);
outb(0x217B, 0x02);
/*
* Cursor goes in the top left corner
* of the Sprite area, so the horizontal and
* vertical presets are 0.
*/
outb(0x217A, 0xE2);
outb(0x217B, 0x00);
outb(0x217A, 0xE3);
outb(0x217B, 0x00);
outb(0x217A, 0xE6);
outb(0x217B, 0x00);
outb(0x217A, 0xE7);
outb(0x217B, 0x00);
/*
* Find a place for the cursor data in display memory.
* Must be on a "doubleword" boundary, but put it on a
* 1024-byte boundary so that there's no danger of it
* crossing a page.
*/
storage = (gscreen.width*BY2WD*gscreen.r.max.y+1023)/1024;
storage *= 1024/4;
outb(0x217A, 0xE8);
outb(0x217B, storage & 0xFF);
outb(0x217A, 0xE9);
outb(0x217B, (storage>>8) & 0xFF);
outb(0x217A, 0xEA);
outb(0x217B, (storage>>16) & 0x0F);
storage *= 4;
/*
* Row offset in "quadwords". Must be 2 for Sprite.
* Bag the pixel-panning.
* Colour depth, must be 2 for Sprite.
*/
outb(0x217A, 0xEB);
outb(0x217B, 0x02);
outb(0x217A, 0xEC);
outb(0x217B, 0x00);
outb(0x217A, 0xED);
outb(0x217B, 0x00);
outb(0x217A, 0xEE);
if(gscreen.ldepth == 3)
outb(0x217B, 0x01);
else
outb(0x217B, 0x00);
/*
* Enable the CRTCB/Sprite.
*/
outb(0x217A, 0xF7);
imaF7 = inb(0x217B);
outb(0x217B, 0x80|imaF7);
}
static void
load(Cursor *c)
{
uchar p0, p1, *mem;
int i, x, y;
ushort p;
/*
* Lock the display memory so we can update the
* cursor bitmap if necessary.
*/
lock(&et4000pagelock);
if(memcmp(c, &curcursor, sizeof(Cursor)) == 0){
outb(0x217A, 0xF7);
p0 = inb(0x217B);
outb(0x217B, 0x80|p0);
unlock(&et4000pagelock);
return;
}
memmove(&curcursor, c, sizeof(Cursor));
/*
* Disable the cursor.
* Set the display page (do we need to restore
* the current contents when done?) and the
* pointer to the two planes. What if this crosses
* into a new page?
*/
disable();
setet4000page(storage>>16);
mem = ((uchar*)gscreen.base) + (storage & 0xFFFF);
/*
* Initialise the 64x64 cursor RAM array. There are 2 planes,
* p0 and p1. Data is written 4 pixels per byte, with p1 the
* MS bit of each pixel.
* The cursor mode gives the following truth table:
* p1 p0 colour
* 0 0 Sprite Colour 0 (defined as 0x00)
* 0 1 Sprite Colour 1 (defined as 0xFF)
* 1 0 Transparent (allow CRTC pixel pass through)
* 1 1 Invert (allow CRTC pixel invert through)
* Put the cursor into the top-left of the 64x64 array.
*/
for(y = 0; y < 64; y++){
for(x = 0; x < 64/8; x++){
if(x < 16/8 && y < 16){
p0 = c->clr[x+y*2];
p1 = c->set[x+y*2];
p = 0x0000;
for(i = 0; i < 8; i++){
if(p0 & (1<<(7-i)))
;
else if(p1 & (1<<(7-i)))
p |= 0x01<<(2*i);
else
p |= 0x02<<(2*i);
}
*mem++ = p & 0xFF;
*mem++ = (p>>8) & 0xFF;
}
else {
*mem++ = 0xAA;
*mem++ = 0xAA;
}
}
}
/*
* Set the cursor hotpoint and enable the cursor.
*/
hotpoint = c->offset;
outb(0x217A, 0xF7);
p = inb(0x217B)|0x80;
outb(0x217B, p);
unlock(&et4000pagelock);
}
static int
move(Point p)
{
int x, xo, y, yo;
if(canlock(&et4000pagelock) == 0)
return 1;
/*
* Mustn't position the cursor offscreen even partially,
* or it disappears. Therefore, if x or y is -ve, adjust the
* cursor presets instead.
*/
if((x = p.x+hotpoint.x) < 0){
xo = -x;
x = 0;
}
else
xo = 0;
if((y = p.y+hotpoint.y) < 0){
yo = -y;
y = 0;
}
else
yo = 0;
/*
* The cursor image is jerky if we don't do this.
* The cursor information is probably fetched from
* display memory during the horizontal blank active
* time and it doesn't like it if the coordinates
* are changed underneath.
*/
while((vgai(Status1) & 0x08) == 0)
;
outb(0x217A, 0xE2);
outb(0x217B, xo);
outb(0x217A, 0xE6);
outb(0x217B, yo);
outb(0x217A, 0xE1);
outb(0x217B, (x>>8) & 0xFF);
outb(0x217A, 0xE0);
outb(0x217B, x & 0xFF);
outb(0x217A, 0xE5);
outb(0x217B, (y>>8) & 0xFF);
outb(0x217A, 0xE4);
outb(0x217B, y & 0xFF);
unlock(&et4000pagelock);
return 0;
}
Hwgc et4000hwgc = {
"et4000hwgc",
enable,
load,
move,
disable,
};
void
et4000page(int page)
{
if(hwgc == &et4000hwgc){
lock(&et4000pagelock);
setet4000page(page);
unlock(&et4000pagelock);
}
else
setet4000page(page);
}
.
## diffname pc/vgaet4000.c 1994/1203
## diff -e /n/fornaxdump/1994/1201/sys/src/brazil/pc/vgaet4000.c /n/fornaxdump/1994/1203/sys/src/brazil/pc/vgaet4000.c
171a
else if(p0 & (1<<(7-i)))
;
.
168,170c
if(p1 & (1<<(7-i)))
.
## diffname pc/vgaet4000.c 1995/0126
## diff -e /n/fornaxdump/1994/1203/sys/src/brazil/pc/vgaet4000.c /n/fornaxdump/1995/0126/sys/src/brazil/pc/vgaet4000.c
268a
}
static Vgac et4000 = {
"et4000",
et4000page,
0,
};
void
vgaet4000link(void)
{
addvgaclink(&et4000);
addhwgclink(&et4000hwgc);
.
256a
0,
.
## diffname pc/vgaet4000.c 1995/02021
## diff -e /n/fornaxdump/1995/0126/sys/src/brazil/pc/vgaet4000.c /n/fornaxdump/1995/02021/sys/src/brazil/pc/vgaet4000.c
261c
static void
.
## diffname pc/vgaet4000.c 1997/0327
## diff -e /n/fornaxdump/1995/02021/sys/src/brazil/pc/vgaet4000.c /n/emeliedump/1997/0327/sys/src/brazil/pc/vgaet4000.c
264,270c
lock(&et4000lock);
setet4000page(page);
unlock(&et4000lock);
.
247c
unlock(&et4000lock);
.
201c
if(canlock(&et4000lock) == 0)
.
193c
unlock(&et4000lock);
.
143c
outb(0x217A, 0xF7);
imaF7 = inb(0x217B) & ~0x80;
outb(0x217B, imaF7);
.
131c
unlock(&et4000lock);
.
126c
lock(&et4000lock);
.
118c
uchar imaF7, p0, p1, *mem;
.
112a
unlock(&et4000lock);
.
50a
* disable();
*/
outb(0x217A, 0xF7);
imaF7 = inb(0x217B) & ~0x80;
outb(0x217B, imaF7);
/*
.
48c
lock(&et4000lock);
.
40a
unlock(&et4000lock);
.
37a
lock(&et4000lock);
.
15c
static Lock et4000lock;
.
## diffname pc/vgaet4000.c 2000/0804
## diff -e /n/emeliedump/1997/0327/sys/src/brazil/pc/vgaet4000.c /n/emeliedump/2000/0804/sys/src/9/pc/vgaet4000.c
288,294d
286a
0,
et4000page,
0
.
284d
274,282c
VGAdev et4000dev = {
.
271c
et4000enable,
et4000disable,
et4000load,
et4000move,
.
266,269d
264c
VGAcur et4000cur = {
.
260c
unlock(&scr->devlock);
.
228c
if((y = p.y+scr->offset.y) < 0){
.
222c
if((x = p.x+scr->offset.x) < 0){
.
214c
if(canlock(&scr->devlock) == 0)
.
210c
et4000move(VGAscr *scr, Point p)
.
206c
unlock(&scr->devlock);
.
201d
199c
* enable the cursor.
.
184a
else if(p0 & (1<<(7-i)))
p |= 0x01<<(2*i);
.
182,183d
176,177c
p0 = clr[x+y*2];
p1 = set[x+y*2];
.
172a
memmove(clr, c->clr, sizeof(clr));
// pixreverse(clr, sizeof(clr), 0);
memmove(set, c->set, sizeof(set));
// pixreverse(set, sizeof(set), 0);
.
171a
*
* This is almost certainly wrong, since it has not
* been updated for the 3rd edition color values.
.
158,159c
setet4000page(scr->storage>>16);
mem = (uchar*)KADDR(scr->aperture) + (scr->storage & 0xFFFF);
.
154,156c
et4000disable(scr);
.
137,145c
lock(&scr->devlock);
.
131a
uchar clr[2*16], set[2*16];
.
129c
uchar p0, p1, *mem;
.
127c
et4000load(VGAscr *scr, Cursor *c)
.
122,123d
113,114c
// else
// outb(0x217B, 0x00);
.
111c
// if(vgascreen.ldepth == 3)
.
94,95c
outb(0x217B, (scr->storage>>16) & 0x0F);
scr->storage *= 4;
.
92c
outb(0x217B, (scr->storage>>8) & 0xFF);
.
90c
outb(0x217B, scr->storage & 0xFF);
.
87,88c
scr->storage = (scr->gscreen->width*BY2WD*scr->gscreen->r.max.y+1023)/1024;
scr->storage *= 1024/4;
.
53,59d
50c
et4000disable(scr);
.
46c
et4000enable(VGAscr *scr)
.
42d
38d
35a
lock(&scr->devlock);
setet4000page(page);
unlock(&scr->devlock);
}
static void
et4000disable(VGAscr*)
{
.
34c
et4000page(VGAscr *scr, int page)
.
12,18d
10d
8c
#define Image IMAGE
#include <draw.h>
#include <memdraw.h>
#include <cursor.h>
.
## diffname pc/vgaet4000.c 2000/0808
## diff -e /n/emeliedump/2000/0804/sys/src/9/pc/vgaet4000.c /n/emeliedump/2000/0808/sys/src/9/pc/vgaet4000.c
262c
VGAdev vgaet4000dev = {
.
253c
VGAcur vgaet4000cur = {
.
## diffname pc/vgaet4000.c 2001/0518
## diff -e /n/emeliedump/2000/0808/sys/src/9/pc/vgaet4000.c /n/emeliedump/2001/0518/sys/src/9/pc/vgaet4000.c
171,172c
if(p1 & (1<<(7-i))){
/* nothing to do */
}
.
|
