165 lines
6 KiB
C
165 lines
6 KiB
C
/*************************************************************************
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* *
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* Copyright (c) 2009-2022, Howard M. Harte *
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* https://github.com/hharte *
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* Copyright (c) 2004, Philip L. Budne *
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* Copyright (c) 1993-2003, Robert M. Supnik *
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* *
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* Permission is hereby granted, free of charge, to any person obtaining *
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* a copy of this software and associated documentation files (the *
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* "Software"), to deal in the Software without restriction, including *
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* without limitation the rights to use, copy, modify, merge, publish, *
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* distribute, sublicense, and/or sell copies of the Software, and to *
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* permit persons to whom the Software is furnished to do so, subject to *
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* the following conditions: *
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* *
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* The above copyright notice and this permission notice shall be *
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* included in all copies or substantial portions of the Software. *
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* *
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, *
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON- *
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* INFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE *
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN *
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN *
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE *
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* SOFTWARE. *
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* *
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* Except as contained in this notice, the names of The Authors shall *
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* not be used in advertising or otherwise to promote the sale, use or *
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* other dealings in this Software without prior written authorization *
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* from the Authors. *
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* *
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* Module Description: *
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* *
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* TX-0 display simulator *
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* *
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*************************************************************************/
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#ifdef USE_DISPLAY
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#include "tx0_defs.h"
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#include "display/display.h"
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#include "sim_video.h"
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extern int32 ios, iosta, PF;
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extern int32 stop_inst;
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extern int32 PEN_HIT;
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t_stat dpy_svc (UNIT *uptr);
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t_stat dpy_reset (DEVICE *dptr);
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/* DPY data structures
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dpy_dev DPY device descriptor
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dpy_unit DPY unit
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dpy_reg DPY register list
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*/
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#define CYCLE_TIME 5 /* 5us memory cycle */
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#define DPY_WAIT (50/CYCLE_TIME) /* 50us */
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UNIT dpy_unit = {
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UDATA (&dpy_svc, UNIT_ATTABLE, 0), DPY_WAIT };
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static t_bool dpy_stop_flag = FALSE;
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static void dpy_quit_callback (void)
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{
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dpy_stop_flag = TRUE;
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}
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#define DEB_VMOU SIM_VID_DBG_MOUSE /* Video mouse */
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#define DEB_VKEY SIM_VID_DBG_KEY /* Video key */
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#define DEB_VCUR SIM_VID_DBG_CURSOR /* Video cursor */
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#define DEB_VVID SIM_VID_DBG_VIDEO /* Video */
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DEBTAB dpy_deb[] = {
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{ "VMOU", DEB_VMOU, "Video Mouse" },
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{ "VKEY", DEB_VKEY, "Video Key" },
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{ "VCUR", DEB_VCUR, "Video Cursor" },
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{ "VVID", DEB_VVID, "Video Video" },
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{ NULL, 0 }
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};
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DEVICE dpy_dev = {
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"DPY", &dpy_unit, NULL, NULL,
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1, 10, 31, 1, 8, 8,
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NULL, NULL, &dpy_reset,
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NULL, NULL, NULL,
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NULL, DEV_DISABLE | DEV_DIS | DEV_DEBUG, 0, dpy_deb };
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/* Display Routine */
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int32 dpy (int32 ac)
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{
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int32 pen_hit;
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int32 x, y;
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int level;
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if (dpy_dev.flags & DEV_DIS) /* disabled? */
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return SCPE_UDIS;
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x = (ac >> 9) & 0777; /* X = high nine bits of AC */
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y = (ac & 0777); /* Y = low nine bits of AC */
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/*
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* convert one's complement -255..+255 center origin
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* to 0..511 (lower left origin)
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*/
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if (x & 0400)
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x ^= 0400;
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else
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x += 255;
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if (y & 0400)
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y ^= 0400;
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else
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y += 255;
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level = DISPLAY_INT_MAX; /* Maximum intensity */
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if (display_point(x,y,level,0)) {
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/* here with light pen hit */
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PF = PF | 010; /* set prog flag 3 */
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pen_hit = 1;
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} else {
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pen_hit = 0;
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}
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sim_activate (&dpy_unit, dpy_unit.wait); /* activate */
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return pen_hit;
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}
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/*
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* Unit service routine
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*
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* Under X11 this includes polling for events, so it can't be
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* call TOO infrequently...
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*/
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t_stat dpy_svc (UNIT *uptr)
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{
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display_age(dpy_unit.wait*CYCLE_TIME, 1);
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sim_activate (&dpy_unit, dpy_unit.wait); /* requeue! */
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if (dpy_stop_flag) {
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dpy_stop_flag = FALSE; /* reset flag after we notice it */
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return SCPE_STOP;
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}
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return SCPE_OK;
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}
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/* Reset routine */
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t_stat dpy_reset (DEVICE *dptr)
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{
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sim_cancel (&dpy_unit); /* deactivate unit */
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if (dpy_dev.flags & DEV_DIS) /* disabled? */
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return SCPE_OK;
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display_init(DIS_TX0, RES_FULL, dptr);
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display_reset();
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vid_register_quit_callback (&dpy_quit_callback);
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iosta = iosta & ~(IOS_PNT | IOS_SPC); /* clear flags */
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return SCPE_OK;
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}
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#else /* USE_DISPLAY not defined */
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char tx0_dpy_unused; /* sometimes empty object modules cause problems */
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#endif /* USE_DISPLAY not defined */
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