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IMLAC: Simulator for Imlac PDS-1.

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This commit is contained in:
Lars Brinkhoff
2020-06-12 16:05:50 +02:00
parent d1f41d9c1f
commit f95ac7ddbd
16 changed files with 3429 additions and 3 deletions
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12
display/display.c
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@@ -125,7 +125,7 @@ struct color color_p29 = { p29, ELEMENTS(p29), 25000 };
/* green phosphor for Tek 611 */
static struct phosphor p31[] = {{0.0, 1.0, 0.77, 0.5, .1}};
struct color color_p31 = { p31, ELEMENTS(p31), 25000 };
struct color color_p31 = { p31, ELEMENTS(p31), 100000 };
/* green phosphor for III */
static struct phosphor p39[] = {{0.2, 1.0, 0.0, 0.5, 0.01}};
@@ -251,7 +251,15 @@ static struct display displays[] = {
* III display
* on PDP-10
*/
{ DIS_III, "III Display", &color_p39, NULL, 1024, 1024 }
{ DIS_III, "III Display", &color_p39, NULL, 1024, 1024 },
/*
* Imlac display
* 1024x1024 addressable points.
* P31 phosphor according to "Heads-Up Display for Flight
* Simulator for Advanced Aircraft"
*/
{ DIS_IMLAC, "Imlac Display", &color_p31, NULL, 1024, 1024 }
};
/*

1
display/display.h
View File

@@ -42,6 +42,7 @@ enum display_type {
* of the PDP-1, and thus all DEC machines.
*/
DIS_TX0 = 0,
DIS_IMLAC = 1,
DIS_VR14 = 14,
DIS_VR17 = 17,
DIS_VR20 = 20,

114
display/imlac.c Normal file
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@@ -0,0 +1,114 @@
/* imlac.c: Imlac display interface.
Copyright (c) 2020, Lars Brinkhoff
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the "Software"),
to deal in the Software without restriction, including without limitation
the rights to use, copy, modify, merge, publish, distribute, sublicense,
and/or sell copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
LARS BRINKHOFF BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Except as contained in this notice, the name of Lars Brinkhoff shall not be
used in advertising or otherwise to promote the sale, use or other dealings
in this Software without prior written authorization from Lars Brinkhoff
*/
#include "display.h"
#include "imlac.h"
#if defined(__cplusplus)
extern "C" {
#endif
int imlac_init(void *dev, int debug)
{
return display_init (DIS_IMLAC, 1, dev);
}
void imlac_point (int x, int y)
{
display_point (x, y, DISPLAY_INT_MAX, 0);
}
int imlac_cycle(int us, int slowdown)
{
return display_age (us, slowdown);
}
#define ABS(_X) ((_X) >= 0 ? (_X) : -(_X))
#define SIGN(_X) ((_X) >= 0 ? 1 : -1)
static void
xline (int x, int y, int x2, int dx, int dy)
{
int ix = SIGN(dx);
int iy = SIGN(dy);
int ay;
dx = ABS(dx);
dy = ABS(dy);
ay = dy/2;
for (;;) {
imlac_point (x, y);
if (x == x2)
break;
if (ay > 0) {
y += iy;
ay -= dx;
}
ay += dy;
x += ix;
}
}
static void
yline (int x, int y, int y2, int dx, int dy)
{
int ix = SIGN(dx);
int iy = SIGN(dy);
int ax;
dx = ABS(dx);
dy = ABS(dy);
ax = dx/2;
for (;;) {
imlac_point (x, y);
if (y == y2)
break;
if (ax > 0) {
x += ix;
ax -= dy;
}
ax += dx;
y += iy;
}
}
void
imlac_line (int x1, int y1, int x2, int y2)
{
int dx = x2 - x1;
int dy = y2 - y1;
if (ABS (dx) > ABS(dy))
xline (x1, y1, x2, dx, dy);
else
yline (x1, y1, y2, dx, dy);
}
#if defined(__cplusplus)
}
#endif

38
display/imlac.h Normal file
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@@ -0,0 +1,38 @@
/* imlac.h: Imlac display interface.
Copyright (c) 2020, Lars Brinkhoff.
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the "Software"),
to deal in the Software without restriction, including without limitation
the rights to use, copy, modify, merge, publish, distribute, sublicense,
and/or sell copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
LARS BRINKHOFF BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Except as contained in this notice, the name of Lars Brinkhoff shall not be
used in advertising or otherwise to promote the sale, use or other dealings
in this Software without prior written authorization from Lars Brinkhoff
*/
#if defined(__cplusplus)
extern "C" {
#endif
extern int imlac_init(void *, int);
extern int imlac_cycle(int, int);
extern void imlac_point(int, int);
extern void imlac_line(int x1, int y1, int x2, int y2);
#if defined(__cplusplus)
}
#endif