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This commit is contained in:
Jasmine Iwanek
2022-02-20 02:26:27 -05:00
parent a66e392b26
commit 4674756664
401 changed files with 6985 additions and 6985 deletions
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206
src/video/vid_pgc.c
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@@ -8,13 +8,13 @@
*
* This implements just enough of the Professional Graphics
* Controller to act as a basis for the Vermont Microsystems
* IM-1024.
* IM-1024.
*
* PGC features implemented include:
* > The CGA-compatible display modes
* > Switching to and from native mode
* > Communicating with the host PC
*
*
* Numerous features are implemented partially or not at all,
* such as:
* > 2D drawing
@@ -113,7 +113,7 @@ static const char *pgc_err_msgs[] = {
"Too long\r",
"Area \r",
"Missing \r",
"Unknown \r"
"Unknown \r"
};
@@ -167,7 +167,7 @@ output_byte(pgc_t *dev, uint8_t val)
pgc_log("PGC: output buffer state: %02x %02x Sleeping\n",
dev->mapram[0x302], dev->mapram[0x303]);
dev->waiting_output_fifo = 1;
pgc_sleep(dev);
pgc_sleep(dev);
}
if (dev->mapram[0x3ff]) {
@@ -206,7 +206,7 @@ error_byte(pgc_t *dev, uint8_t val)
/* If error buffer full, wait for it to empty. */
while (!dev->stopped && dev->mapram[0x304] == dev->mapram[0x305] - 1) {
dev->waiting_error_fifo = 1;
pgc_sleep(dev);
pgc_sleep(dev);
}
if (dev->mapram[0x3ff]) {
@@ -238,7 +238,7 @@ error_string(pgc_t *dev, const char *s)
/*
* Read next byte from the input buffer.
*
* If no byte available will sleep until one is. Returns 0 if
* If no byte available will sleep until one is. Returns 0 if
* a PGC reset has been triggered by a write to 0xC63FF.
*/
static int
@@ -247,7 +247,7 @@ input_byte(pgc_t *dev, uint8_t *result)
/* If input buffer empty, wait for it to fill. */
while (!dev->stopped && (dev->mapram[0x300] == dev->mapram[0x301])) {
dev->waiting_input_fifo = 1;
pgc_sleep(dev);
pgc_sleep(dev);
}
if (dev->stopped)
@@ -303,7 +303,7 @@ read_command(pgc_t *dev)
return pgc_clist_byte(dev, &dev->hex_command);
if (dev->ascii_mode) {
char ch;
char ch;
int count = 0;
while (count < 7) {
@@ -359,7 +359,7 @@ parse_command(pgc_t *dev, const pgc_cmd_t **pcmd)
/* If in ASCII mode match on the ASCII command. */
if (dev->ascii_mode && !dev->clcur) {
sprintf(match, "%-6.6s", cmd->ascii);
sprintf(match, "%-6.6s", cmd->ascii);
if (! strncmp(match, dev->asc_command, 6)) {
*pcmd = cmd;
dev->hex_command = cmd->hex;
@@ -400,20 +400,20 @@ hndl_clbeg(pgc_t *dev)
while (1) {
if (! parse_command(dev, &cmd)) {
/* PGC has been reset. */
return;
}
return;
}
if (!cmd) {
pgc_error(dev, PGC_ERROR_OPCODE);
return;
return;
} else if (dev->hex_command == 0x71) {
/* CLEND */
dev->clist[param] = cl;
return;
} else {
} else {
if (! pgc_cl_append(&cl, dev->hex_command)) {
pgc_error(dev, PGC_ERROR_OVERFLOW);
return;
}
}
if (cmd->parser) {
if (! (*cmd->parser)(dev, &cl, cmd->p))
@@ -526,8 +526,8 @@ hndl_color(pgc_t *dev)
/*
* Set drawing mode.
*
* Set drawing mode.
*
* 0 => Draw
* 1 => Invert
*/
@@ -667,7 +667,7 @@ pgc_write_pixel(pgc_t *dev, uint16_t x, uint16_t y, uint8_t ink)
uint8_t *vram;
/* Suppress out-of-range writes; clip to viewport. */
if (x < dev->vp_x1 || x > dev->vp_x2 || x >= dev->maxw ||
if (x < dev->vp_x1 || x > dev->vp_x2 || x >= dev->maxw ||
y < dev->vp_y1 || y > dev->vp_y2 || y >= dev->maxh) {
pgc_log("PGC: write_pixel clipped: (%i,%i) "
"vp_x1=%i vp_y1=%i vp_x2=%i vp_y2=%i "
@@ -689,7 +689,7 @@ pgc_read_pixel(pgc_t *dev, uint16_t x, uint16_t y)
uint8_t *vram;
/* Suppress out-of-range reads. */
if (x >= dev->maxw || y >= dev->maxh)
if (x >= dev->maxw || y >= dev->maxh)
return 0;
vram = pgc_vram_addr(dev, x, y);
@@ -712,10 +712,10 @@ pgc_plot(pgc_t *dev, uint16_t x, uint16_t y)
uint8_t *vram;
/* Only allow plotting within the current viewport. */
if (x < dev->vp_x1 || x > dev->vp_x2 || x >= dev->maxw ||
if (x < dev->vp_x1 || x > dev->vp_x2 || x >= dev->maxw ||
y < dev->vp_y1 || y > dev->vp_y2 || y >= dev->maxh) {
pgc_log("PGC: plot clipped: (%i,%i) %i <= x <= %i; %i <= y <= %i; "
"mode=%i ink=0x%02x\n", x, y,
"mode=%i ink=0x%02x\n", x, y,
dev->vp_x1, dev->vp_x2, dev->vp_y1, dev->vp_y2,
dev->draw_mode, dev->color);
return;
@@ -752,7 +752,7 @@ pgc_plot(pgc_t *dev, uint16_t x, uint16_t y)
* Draw a line (using raster coordinates).
*
* Bresenham's Algorithm from:
* <https://rosettacode.org/wiki/Bitmap/Bresenham%27s_line_algorithm#C>
* <https://rosettacode.org/wiki/Bitmap/Bresenham%27s_line_algorithm#C>
*
* The line pattern mask to use is passed in. Return value is the
* line pattern mask, rotated by the number of points drawn.
@@ -813,7 +813,7 @@ pgc_draw_line(pgc_t *dev, int32_t x0, int32_t y0, int32_t x1, int32_t y1, uint16
/*
* Draw a horizontal line in the current fill pattern
* Draw a horizontal line in the current fill pattern
* (using raster coordinates).
*/
void
@@ -832,8 +832,8 @@ pgc_fill_line_r(pgc_t *dev, int32_t x0, int32_t x1, int32_t y0)
if (dev->fill_pattern[y0 & 0x0F] & mask)
pgc_plot(dev, x, y0);
mask = mask >> 1;
if (mask == 0) mask = 0x8000;
}
if (mask == 0) mask = 0x8000;
}
}
@@ -896,8 +896,8 @@ pgc_fill_polygon(pgc_t *dev, unsigned corners, int32_t *x, int32_t *y)
}
/* Polygon fill. Based on <http://alienryderflex.com/polygon_fill/> */
/* For each row, work out where the polygon lines intersect with
* that row. */
/* For each row, work out where the polygon lines intersect with
* that row. */
for (ypos = ymin; ypos <= ymax; ypos++) {
nodes = 0;
j = corners - 1;
@@ -907,7 +907,7 @@ pgc_fill_polygon(pgc_t *dev, unsigned corners, int32_t *x, int32_t *y)
nodex[nodes++] = dx[i] + (ypos-dy[i])/(dy[j]-dy[i]) * (dx[j] - dx[i]);
}
j = i;
}
}
/* Sort the intersections. */
if (nodes)
@@ -1041,14 +1041,14 @@ parse_poly(pgc_t *dev, pgc_cl_t *cl, int c)
if (! pgc_cl_append(cl, count)) {
pgc_error(dev, PGC_ERROR_OVERFLOW);
return 0;
return 0;
}
pgc_log("PCG: parse_poly: parse %i coords\n", 2 * count);
return pgc_parse_coords(dev, cl, 2 * count);
}
/* Handle the DISPLAY command. */
static void
hndl_display(pgc_t *dev)
@@ -1059,7 +1059,7 @@ hndl_display(pgc_t *dev)
pgc_log("PGC: DISPLAY(%i)\n", param);
if (param > 1)
if (param > 1)
pgc_error(dev, PGC_ERROR_RANGE);
else
pgc_setdisplay(dev, param);
@@ -1101,7 +1101,7 @@ hndl_imagew(pgc_t *dev)
if (v1 & 0x80) {
/* Literal run. */
v1 -= 0x7f;
while (col1 <= col2 && v1 != 0) {
while (col1 <= col2 && v1 != 0) {
if (! pgc_param_byte(dev, &v2)) return;
pgc_write_pixel(dev, col1, row, v2);
col1++;
@@ -1110,14 +1110,14 @@ hndl_imagew(pgc_t *dev)
} else {
/* Repeated run. */
if (! pgc_param_byte(dev, &v2)) return;
v1++;
while (col1 <= col2 && v1 != 0) {
while (col1 <= col2 && v1 != 0) {
pgc_write_pixel(dev, col1, row, v2);
col1++;
v1--;
}
}
}
}
}
@@ -1166,9 +1166,9 @@ hndl_lutrd(pgc_t *dev)
col = dev->palette[param];
pgc_result_byte(dev, (col >> 20) & 0x0f);
pgc_result_byte(dev, (col >> 12) & 0x0f);
pgc_result_byte(dev, (col >> 4) & 0x0f);
pgc_result_byte(dev, (col >> 20) & 0x0f);
pgc_result_byte(dev, (col >> 12) & 0x0f);
pgc_result_byte(dev, (col >> 4) & 0x0f);
}
@@ -1195,7 +1195,7 @@ hndl_lut(pgc_t *dev)
/*
* LUT8RD and LUT8 are extensions implemented by several PGC clones,
* so here are functions that implement them even though they aren't
* so here are functions that implement them even though they aren't
* used by the PGC.
*/
void
@@ -1208,8 +1208,8 @@ pgc_hndl_lut8rd(pgc_t *dev)
col = dev->palette[param];
pgc_result_byte(dev, (col >> 16) & 0xff);
pgc_result_byte(dev, (col >> 8) & 0xff);
pgc_result_byte(dev, (col >> 16) & 0xff);
pgc_result_byte(dev, (col >> 8) & 0xff);
pgc_result_byte(dev, col & 0xff);
}
@@ -1363,7 +1363,7 @@ hndl_window(pgc_t *dev)
*
* In order to support the original PGC and clones, we support two lists;
* core commands (listed below) and subclass commands (listed in the clone).
*
*
* Each row has five parameters:
* ASCII-mode command
* Hex-mode command
@@ -1373,7 +1373,7 @@ hndl_window(pgc_t *dev)
*
* TODO: This list omits numerous commands present in a genuine PGC
* (ARC, AREA, AREABC, BUFFER, CIRCLE etc etc).
* TODO: Some commands don't have a parse function (for example, IMAGEW)
* TODO: Some commands don't have a parse function (for example, IMAGEW)
*
* The following ASCII entries have special meaning:
* ~~~~~~ command is valid only in hex mode
@@ -1438,7 +1438,7 @@ static const pgc_cmd_t pgc_commands[] = {
{ "VWPORT", 0xb2, hndl_vwport, pgc_parse_words, 4 },
{ "VWP", 0xb2, hndl_vwport, pgc_parse_words, 4 },
{ "WINDOW", 0xb3, hndl_window, pgc_parse_words, 4 },
{ "WI", 0xb3, hndl_window, pgc_parse_words, 4 },
{ "WI", 0xb3, hndl_window, pgc_parse_words, 4 },
{ "@@@@@@", 0x00, NULL, NULL, 0 }
};
@@ -1452,7 +1452,7 @@ wake_timer(void *priv)
pgc_t *dev = (pgc_t *)priv;
#ifdef ENABLE_PGC_LOG
pgc_log("PGC: woke up\n");
pgc_log("PGC: woke up\n");
#endif
thread_set_event(dev->pgc_wake_thread);
@@ -1487,9 +1487,9 @@ pgc_thread(void *priv)
/* Nope, just a reset. */
continue;
}
}
pgc_log("PGC: Command: [%02x] '%s' found = %i\n",
pgc_log("PGC: Command: [%02x] '%s' found = %i\n",
dev->hex_command, dev->asc_command, (cmd != NULL));
if (cmd) {
@@ -1514,7 +1514,7 @@ err_digit(pgc_t *dev)
do {
/* Swallow everything until the next separator */
if (! dev->inputbyte(dev, &asc)) return 0;
} while (! is_whitespace(asc));
} while (! is_whitespace(asc));
pgc_error(dev, PGC_ERROR_DIGIT);
@@ -1537,7 +1537,7 @@ pgc_result_byte(pgc_t *dev, uint8_t val)
sprintf(buf, "%i", val);
dev->result_count++;
return output_string(dev, buf);
return output_string(dev, buf);
}
@@ -1558,7 +1558,7 @@ pgc_result_word(pgc_t *dev, int16_t val)
sprintf(buf, "%i", val);
dev->result_count++;
return output_string(dev, buf);
return output_string(dev, buf);
}
@@ -1665,7 +1665,7 @@ pgc_setdisplay(pgc_t *dev, int cga)
/*
* When idle, the PGC drawing thread sleeps. pgc_wake() awakens it - but
* not immediately. Like the Voodoo, it has a short delay so that writes
* not immediately. Like the Voodoo, it has a short delay so that writes
* can be batched.
*/
void
@@ -1683,7 +1683,7 @@ pgc_sleep(pgc_t *dev)
pgc_log("PGC: sleeping on %i %i %i %i 0x%02x 0x%02x\n",
dev->stopped,
dev->waiting_input_fifo, dev->waiting_output_fifo,
dev->waiting_error_fifo, dev->mapram[0x300], dev->mapram[0x301]);
dev->waiting_error_fifo, dev->mapram[0x300], dev->mapram[0x301]);
/* Avoid entering waiting state. */
if (dev->stopped) {
@@ -1720,7 +1720,7 @@ pgc_clist_byte(pgc_t *dev, uint8_t *val)
if (dev->clcur->rdptr < dev->clcur->wrptr)
*val = dev->clcur->list[dev->clcur->rdptr++];
else
else
*val = 0;
/* If we've reached the end, reset to the beginning and
@@ -1844,7 +1844,7 @@ pgc_param_coord(pgc_t *dev, int32_t *value)
return 1;
}
/* If in hex mode, read in the encoded integer and fraction parts
/* If in hex mode, read in the encoded integer and fraction parts
* from the hex stream */
if (! dev->ascii_mode) {
for (n = 0; n < 4; n++)
@@ -1860,7 +1860,7 @@ pgc_param_coord(pgc_t *dev, int32_t *value)
do {
if (! dev->inputbyte(dev, &asc)) return 0;
if (asc == '-') sign = -1;
} while (is_whitespace(asc));
} while (is_whitespace(asc));
/* There had better be a digit next. */
if (! isdigit(asc)) {
@@ -1888,7 +1888,7 @@ pgc_param_coord(pgc_t *dev, int32_t *value)
case 'D':
case 'e':
case 'E':
esign = 1;
esign = 1;
if (! dev->inputbyte(dev, &asc)) return 0;
if (asc == '-') {
sign = -1;
@@ -1907,12 +1907,12 @@ pgc_param_coord(pgc_t *dev, int32_t *value)
asc -= '0'; /* asc is digit */
switch (state) {
case PS_MAIN:
case PS_MAIN:
integer = (integer * 10)+asc;
if (integer & 0x8000) {
/* Overflow */
pgc_error(dev, PGC_ERROR_RANGE);
integer = 0x7fff;
integer = 0x7fff;
}
break;
@@ -1925,11 +1925,11 @@ pgc_param_coord(pgc_t *dev, int32_t *value)
exponent = (exponent * 10)+asc;
break;
}
}
if (! dev->inputbyte(dev, &asc)) return 0;
} while (! is_whitespace(asc));
} while (! is_whitespace(asc));
res = (frac << 16) / dp;
pgc_log("PGC: integer=%u frac=%u exponent=%u dp=%i res=0x%08lx\n",
@@ -1944,7 +1944,7 @@ pgc_param_coord(pgc_t *dev, int32_t *value)
res /= 10;
}
}
*value = sign*res;
*value = sign*res;
return 1;
}
@@ -1998,7 +1998,7 @@ pgc_parse_bytes(pgc_t *dev, pgc_cl_t *cl, int count)
if (! param) {
pgc_error(dev, PGC_ERROR_OVERFLOW);
return 0;
return 0;
}
for (n = 0; n < count; n++) {
@@ -2010,7 +2010,7 @@ pgc_parse_bytes(pgc_t *dev, pgc_cl_t *cl, int count)
if (! pgc_cl_append(cl, param[n])) {
pgc_error(dev, PGC_ERROR_OVERFLOW);
free(param);
return 0;
return 0;
}
}
@@ -2029,7 +2029,7 @@ pgc_parse_words(pgc_t *dev, pgc_cl_t *cl, int count)
if (! param) {
pgc_error(dev, PGC_ERROR_OVERFLOW);
return 0;
return 0;
}
for (n = 0; n < count; n++) {
@@ -2042,7 +2042,7 @@ pgc_parse_words(pgc_t *dev, pgc_cl_t *cl, int count)
!pgc_cl_append(cl, param[n] >> 8)) {
pgc_error(dev, PGC_ERROR_OVERFLOW);
free(param);
return 0;
return 0;
}
}
@@ -2061,7 +2061,7 @@ pgc_parse_coords(pgc_t *dev, pgc_cl_t *cl, int count)
if (! param) {
pgc_error(dev, PGC_ERROR_OVERFLOW);
return 0;
return 0;
}
for (n = 0; n < count; n++) {
@@ -2073,7 +2073,7 @@ pgc_parse_coords(pgc_t *dev, pgc_cl_t *cl, int count)
/* Here is how the real PGC serializes coords:
*
* 100.5 -> 64 00 00 80 ie 0064.8000
* 100.5 -> 64 00 00 80 ie 0064.8000
* 100.3 -> 64 00 CD 4C ie 0064.4CCD
*/
for (n = 0; n < count; n++) {
@@ -2086,7 +2086,7 @@ pgc_parse_coords(pgc_t *dev, pgc_cl_t *cl, int count)
!pgc_cl_append(cl, (param[n] >> 8) & 0xff)) {
pgc_error(dev, PGC_ERROR_OVERFLOW);
free(param);
return 0;
return 0;
}
}
@@ -2096,7 +2096,7 @@ pgc_parse_coords(pgc_t *dev, pgc_cl_t *cl, int count)
}
/* Convert coordinates based on the current window / viewport to raster
/* Convert coordinates based on the current window / viewport to raster
* coordinates. */
void
pgc_dto_raster(pgc_t *dev, double *x, double *y)
@@ -2171,7 +2171,7 @@ pgc_out(uint16_t addr, uint8_t val, void *priv)
case 0x03d5:
case 0x03d7:
if (dev->mapram[0x03d0] < 18)
dev->mapram[0x03e0 + dev->mapram[0x03d0]] = val;
dev->mapram[0x03e0 + dev->mapram[0x03d0]] = val;
break;
case 0x03d8: /* CRTC Mode Control register */
@@ -2235,7 +2235,7 @@ pgc_write(uint32_t addr, uint8_t val, void *priv)
pgc_t *dev = (pgc_t *)priv;
/*
* It seems variable whether the PGC maps 1K or 2K at 0xc6000.
* It seems variable whether the PGC maps 1K or 2K at 0xc6000.
*
* Map 2K here in case a clone requires it.
*/
@@ -2264,7 +2264,7 @@ pgc_write(uint32_t addr, uint8_t val, void *priv)
pgc_wake(dev);
}
break;
case 0x305: /* error read pointer */
if (dev->waiting_error_fifo &&
dev->mapram[0x304] != (uint8_t)(dev->mapram[0x305] - 1)) {
@@ -2333,13 +2333,13 @@ pgc_cga_text(pgc_t *dev, int w)
int cw = (w == 80) ? 8 : 16;
addr = &dev->cga_vram[((ma + ((dev->displine / pitch) * w)) * 2) & 0x3ffe];
ma += (dev->displine / pitch) * w;
ma += (dev->displine / pitch) * w;
for (x = 0; x < w; x++) {
chr = *addr++;
attr = *addr++;
/* Cursor enabled? */
/* Cursor enabled? */
if (ma == ca && (dev->cgablink & 8) &&
(dev->mapram[0x3ea] & 0x60) != 0x20) {
drawcursor = ((dev->mapram[0x3ea] & 0x1f) <= (sc >> 1)) &&
@@ -2350,14 +2350,14 @@ pgc_cga_text(pgc_t *dev, int w)
if (dev->mapram[0x3d8] & 0x20) {
cols[1] = (attr & 15) + 16;
cols[0] = ((attr >> 4) & 7) + 16;
if ((dev->cgablink & 8) && (attr & 0x80) && !drawcursor)
if ((dev->cgablink & 8) && (attr & 0x80) && !drawcursor)
cols[1] = cols[0];
} else {
} else {
cols[1] = (attr & 15) + 16;
cols[0] = (attr >> 4) + 16;
}
for (c = 0; c < cw; c++) {
for (c = 0; c < cw; c++) {
if (drawcursor)
val = cols[(fontdatm[chr + dev->fontbase][sc] & (1 << (c ^ 7))) ? 1 : 0] ^ 0x0f;
else
@@ -2390,26 +2390,26 @@ pgc_cga_gfx40(pgc_t *dev)
magenta/cyan/white. You still get red/cyan/white if bit 5 of port 03D9h is
not set. This is a firmware issue rather than hardware. */
if (dev->mapram[0x3d9] & 32) {
cols[1] = col | 3;
cols[2] = col | 5;
cols[3] = col | 7;
} else if (dev->mapram[0x3d8] & 4) {
cols[1] = col | 3;
cols[2] = col | 4;
cols[1] = col | 3;
cols[2] = col | 5;
cols[3] = col | 7;
} else {
cols[1] = col | 2;
cols[2] = col | 4;
cols[3] = col | 6;
} else if (dev->mapram[0x3d8] & 4) {
cols[1] = col | 3;
cols[2] = col | 4;
cols[3] = col | 7;
} else {
cols[1] = col | 2;
cols[2] = col | 4;
cols[3] = col | 6;
}
for (x = 0; x < 40; x++) {
addr = &dev->cga_vram[(ma + 2 * x + 80 * (dev->displine >> 2) + 0x2000 * ((dev->displine >> 1) & 1)) & 0x3fff];
dat = (addr[0] << 8) | addr[1];
dev->ma++;
for (c = 0; c < 8; c++) {
buffer32->line[dev->displine][(x << 4) + (c << 1)] =
buffer32->line[dev->displine][(x << 4) + (c << 1) + 1] = cols[dat >> 14];
for (c = 0; c < 8; c++) {
buffer32->line[dev->displine][(x << 4) + (c << 1)] =
buffer32->line[dev->displine][(x << 4) + (c << 1) + 1] = cols[dat >> 14];
dat <<= 2;
}
}
@@ -2433,8 +2433,8 @@ pgc_cga_gfx80(pgc_t *dev)
addr = &dev->cga_vram[(ma + 2 * x + 80 * (dev->displine >> 2) + 0x2000 * ((dev->displine >> 1) & 1)) & 0x3fff];
dat = (addr[0] << 8) | addr[1];
dev->ma++;
for (c = 0; c < 16; c++) {
buffer32->line[dev->displine][(x << 4) + c] = cols[dat >> 15];
for (c = 0; c < 16; c++) {
buffer32->line[dev->displine][(x << 4) + c] = cols[dat >> 15];
dat <<= 1;
}
}
@@ -2457,12 +2457,12 @@ pgc_cga_poll(pgc_t *dev)
video_wait_for_buffer();
if ((dev->mapram[0x03d8] & 0x12) == 0x12)
pgc_cga_gfx80(dev);
pgc_cga_gfx80(dev);
else if (dev->mapram[0x03d8] & 0x02)
pgc_cga_gfx40(dev);
else if (dev->mapram[0x03d8] & 0x01)
pgc_cga_text(dev, 80);
else
else
pgc_cga_text(dev, 40);
} else {
cols[0] = ((dev->mapram[0x03d8] & 0x12) == 0x12) ? 0 : ((dev->mapram[0x03d9] & 15) + 16);
@@ -2492,13 +2492,13 @@ pgc_cga_poll(pgc_t *dev)
if (video_force_resize_get())
video_force_resize_set(0);
}
}
video_blit_memtoscreen_8(0, 0, xsize, ysize);
frames++;
/* We have a fixed 640x400 screen for CGA modes. */
video_res_x = PGC_CGA_WIDTH;
video_res_y = PGC_CGA_HEIGHT;
video_res_x = PGC_CGA_WIDTH;
video_res_y = PGC_CGA_HEIGHT;
switch (dev->mapram[0x3d8] & 0x12) {
case 0x12:
video_bpp = 1;
@@ -2540,7 +2540,7 @@ pgc_poll(void *priv)
video_wait_for_buffer();
/* Don't know why pan needs to be multiplied by -2, but
* the IM1024 driver uses PAN -112 for an offset of
* the IM1024 driver uses PAN -112 for an offset of
* 224. */
y = dev->displine - 2 * dev->pan_y;
for (x = 0; x < dev->screenw; x++) {
@@ -2577,7 +2577,7 @@ pgc_poll(void *priv)
if (video_force_resize_get())
video_force_resize_set(0);
}
}
video_blit_memtoscreen(0, 0, xsize, ysize);
frames++;
@@ -2648,10 +2648,10 @@ pgc_close(void *priv)
/*
* Initialization code common to the PGC and its subclasses.
* Initialization code common to the PGC and its subclasses.
*
* Pass the 'input byte' function in since this is overridden in
* the IM-1024, and needs to be set before the drawing thread is
* Pass the 'input byte' function in since this is overridden in
* the IM-1024, and needs to be set before the drawing thread is
* launched.
*/
void
@@ -2666,7 +2666,7 @@ pgc_init(pgc_t *dev, int maxw, int maxh, int visw, int vish,
mem_mapping_add(&dev->mapping, 0xc4000, 16384,
pgc_read,NULL,NULL, pgc_write,NULL,NULL,
NULL, MEM_MAPPING_EXTERNAL, dev);
mem_mapping_add(&dev->cga_mapping, 0xb8000, 32768,
mem_mapping_add(&dev->cga_mapping, 0xb8000, 32768,
pgc_read,NULL,NULL, pgc_write,NULL,NULL,
NULL, MEM_MAPPING_EXTERNAL, dev);
@@ -2705,7 +2705,7 @@ pgc_init(pgc_t *dev, int maxw, int maxh, int visw, int vish,
dev->pgc_thread = thread_create(pgc_thread, dev);
timer_add(&dev->timer, pgc_poll, dev, 1);
timer_add(&dev->wake_timer, wake_timer, dev, 0);
}