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QVSS/VIDEO: Fix for mouse tracking on Ultrix from Mike Burke for issue #88

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This commit is contained in:
Mark Pizzolato
2013-11-08 17:15:02 -08:00
parent 30cd103a14
commit b57201b88b
3 changed files with 93 additions and 47 deletions
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33
VAX/vax_vc.c
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@@ -25,6 +25,7 @@
vc Qbus video subsystem
08-Nov-2013 MB Implemented mouse position register
06-Nov-2013 MB Increased the speed of v-sync interrupts, which
was too slow for some O/S drivers.
11-Jun-2013 MB First version
@@ -169,11 +170,12 @@ BITFIELD vc_ic_mode_bits[] = {
#define IRQ_MBC 6 /* Mouse button C */
#define IRQ_SPARE 7 /* (spare) */
#define VC_XSIZE 1024
#define VC_XSIZE 1024 /* screen size */
#define VC_YSIZE 864
#define VC_MEMSIZE (1u << 16) /* video memory size */
#define VC_MOVE_MAX 49 /* mouse movement max (per update) */
#define VCMAP_VLD 0x80000000 /* valid */
#define VCMAP_LN 0x00000FFF /* buffer line */
@@ -735,6 +737,7 @@ t_stat vc_svc (UNIT *uptr)
t_bool updated = FALSE; /* flag for refresh */
uint32 line[1024];
uint32 ln, col, off;
int32 xpos, ypos, dx, dy;
uint8 *cur;
vc_crtc_p = vc_crtc_p ^ CRTCP_VB; /* Toggle VBI */
@@ -759,6 +762,32 @@ vc_cur_y = CUR_Y;
vc_cur_v = CUR_V;
vc_cur_f = CUR_F;
xpos = vc_mpos & 0xFF; /* get current mouse position */
ypos = (vc_mpos >> 8) & 0xFF;
dx = vid_mouse_xrel; /* get relative movement */
dy = vid_mouse_yrel;
if (dx > VC_MOVE_MAX) /* limit movement */
dx = VC_MOVE_MAX;
else if (dx < -VC_MOVE_MAX)
dx = -VC_MOVE_MAX;
if (dy > VC_MOVE_MAX)
dy = VC_MOVE_MAX;
else if (dy < -VC_MOVE_MAX)
dy = -VC_MOVE_MAX;
xpos += dx; /* add to counters */
ypos += dy;
vc_mpos = ((ypos & 0xFF) << 8) | (xpos & 0xFF); /* update register */
vid_mouse_xrel = 0; /* reset counters for next poll */
vid_mouse_yrel = 0;
vc_csr |= (CSR_MSA | CSR_MSB | CSR_MSC); /* reset button states */
if (vid_mouse_b3) /* set new button states */
vc_csr &= ~CSR_MSA;
if (vid_mouse_b2)
vc_csr &= ~CSR_MSB;
if (vid_mouse_b1)
vc_csr &= ~CSR_MSC;
for (ln = 0; ln < VC_YSIZE; ln++) {
if ((vc_map[ln] & VCMAP_VLD) == 0) { /* line invalid? */
off = vc_map[ln] * 32; /* get video buf offet */