gered/FoenixToolbox
1
0
Fork 0
Code Issues Pull requests Actions Packages Projects Releases Wiki Activity

Window scrolling speed up

Browse source 
Tweaked the case where we are scrolling only part of the window to use MVN/MVP to move lines.
This commit is contained in:
Peter Weingartner 2024-12-24 22:27:11 -05:00
parent 275e0d7ec8
commit 83d3c74839
2 changed files with 29 additions and 13 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

40
src/dev/txt_f256.c
View file

@ -409,6 +409,22 @@ static short txt_f256_set_color(unsigned char foreground, unsigned char backgrou
extern void io_copy_down(uint16_t count, uint16_t dest, uint16_t src);
extern void io_copy_up(uint16_t count, uint16_t dest, uint16_t src);
/**
* Copy data in the I/O space using the MVN/MVP instructions
*
* @param count the number of bytes to copy
* @param dest the address within the I/O bank to copy to
* @param src the address within the I/O bank to copy from
*/
static void io_copy(uint16_t count, uint16_t dest, uint16_t src) {
if (dest < src) {
io_copy_down(count, dest, src);
} else {
io_copy_up(count, dest, src);
}
}
/**
* Scroll the screen for the most common case: full screen scrolls up by one full row.
*/
@ -501,20 +517,20 @@ static void txt_f256_scroll_complex(short horizontal, short vertical) {
// Move the rows up
uint16_t count = x2 - x0;
// uint16_t text_dest = (uint16_t)((uint32_t)tvky_text_matrix & 0xffff) + offset_dst;
// uint16_t text_src = (uint16_t)((uint32_t)tvky_text_matrix & 0xffff) + offset_src;
// txt_f256_copy(text_dest, text_src, count);
uint16_t text_dest = (uint16_t)((uint32_t)tvky_text_matrix & 0xffff) + offset_dst;
uint16_t text_src = (uint16_t)((uint32_t)tvky_text_matrix & 0xffff) + offset_src;
io_copy(count, text_dest, text_src);
// uint16_t color_dest = (uint16_t)((uint32_t)tvky_color_matrix & 0xffff) + offset_dst;
// uint16_t color_src = (uint16_t)((uint32_t)tvky_color_matrix & 0xffff) + offset_src;
// txt_f256_copy(color_dest, color_src, count);
uint16_t color_dest = (uint16_t)((uint32_t)tvky_color_matrix & 0xffff) + offset_dst;
uint16_t color_src = (uint16_t)((uint32_t)tvky_color_matrix & 0xffff) + offset_src;
io_copy(count, color_dest, color_src);
for (x = x0; x != x2; x += dx) {
offset_dst += dx;
offset_src += dx;
tvky_text_matrix[offset_dst] = tvky_text_matrix[offset_src];
tvky_color_matrix[offset_dst] = tvky_color_matrix[offset_src];
}
// for (x = x0; x != x2; x += dx) {
// offset_dst += dx;
// offset_src += dx;
// tvky_text_matrix[offset_dst] = tvky_text_matrix[offset_src];
// tvky_color_matrix[offset_dst] = tvky_color_matrix[offset_src];
// }
}
/* Clear the rectangles */

2
src/version.h
View file

@ -7,6 +7,6 @@
#define VER_MAJOR 1
#define VER_MINOR 1
#define VER_BUILD 11
#define VER_BUILD 12
#endif