void SimpleConsole::ScrollUp()
{
memcpyw( buffer, buffer+width, width*(height-1) );
memsetw( buffer + width *( height - 1 ), charStyle , width );
memcpyw( video, buffer, width * height );
cursorY --;
}
void
get_scrmem(int currcons)
{
memcpyw((unsigned short *)vc_scrbuf[currcons],
(unsigned short *)origin, video_screen_size);
origin = video_mem_start = (unsigned long)vc_scrbuf[currcons];
scr_end = video_mem_end = video_mem_start + video_screen_size;
pos = origin + y*video_size_row + (x<<1);
}
void scroll(void) {
unsigned blank, temp;
blank = 0x20 | (attrib << 8);
if (csr_y >= 25) {
temp = csr_y - 25 + 1;
memcpyw(txtMemPtr, txtMemPtr + temp * 80, (25 - temp) * 80 * 2);
memsetw(((unsigned short *) txtMemPtr) + (25 - temp) * 80, blank, 80);
csr_y = 25 - 1;
}
}
void
set_scrmem(int currcons, long offset)
{
int i;
if (video_mem_term - video_mem_base < offset + video_screen_size)
offset = 0; /* strange ... */
memcpyw((unsigned short *)(video_mem_base + offset),
(unsigned short *) origin, video_screen_size);
video_mem_start = video_mem_base;
video_mem_end = video_mem_term;
origin = video_mem_base + offset;
scr_end = origin + video_screen_size;
pos = origin + y*video_size_row + (x<<1);
has_wrapped = 0;
}
VHinit ()
{
/* select VSDD RAM bank 0 so we can access the control tables */
vbank (0);
/* set the video register values */
memcpyw (v_regs, vr_data, 16);
/* clear the access table to turn off all objects */
memsetw (v_actab, 0xFFFF, 350);
/* clear the object table */
memsetw (v_odtab, 0, 64);
/* move the character generator table to VSDD RAM */
memsetw (v_cgtab, 0, 4096);
memcpyw (v_cgtab, cgtable, 256 * cg_rows);
}
char *
LineFwd ()
{
register short j, k;
for (j = 0; j < 48; j++)
TheBuf[j] = ' ';
TheBuf[0] = '\260';
TheBuf[48] = '\0';
if (0 == ptecpos)
return ((char *) NULL);
if (0 == (j = findnxt (ptecpos)))
return ((char *) NULL);
ptecpos = j;
memcpyw (&ptebuf.defnum, &patches[ptecpos].defnum, 6);
pteset = TRUE;
pte2buf ();
k = ptecpos;
for (j = 0; j < 8; j++)
if (0 == (k = findnxt (k)))
return (TheBuf);
dspdfst (&TheBuf[2], patches[k].defnum);
dspdfst (&TheBuf[15], patches[k].stmnum);
dspdest (&TheBuf[28], &patches[k]);
for (j = 0; j < 50; j++)
if (TheBuf[j] == '\0')
TheBuf[j] = ' ';
TheBuf[48] = '\0';
return (TheBuf);
}
void SimpleConsole::MoveCursor()
{
MoveCursorTo( cursorX, cursorY );
memcpyw( video + cursorY * width, buffer+ cursorY * width , width); //刷新光标所在项
}
void SimpleConsole::RefreshBuffer()
{
memcpyw( video, buffer, width * height );
}
