6502/CLK
1
0
Fork 0
mirror of https://github.com/TomHarte/CLK.git synced 2026-04-24 20:16:41 +00:00
Code Issues Projects Releases Wiki Activity

Corrects multicolour text mode.

Browse Source
This commit is contained in:
Thomas Harte
2018-10-18 20:25:42 -04:00
parent 0278d5b61c
commit 8ff265c3a1
2 changed files with 9 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files
Components/9918/Implementation/9918Base.hpp
+9 -6
View File
@@ -554,7 +554,7 @@ class Base {
LineBuffer &line_buffer = line_buffers_[write_pointer_.row];
LineBuffer &sprite_selection_buffer = line_buffers_[(write_pointer_.row + 1) % mode_timing_.total_lines];
const size_t row_base = pattern_name_address_ & (static_cast<size_t>((write_pointer_.row << 2)&~31) | 0x3c00);
const size_t row_base = pattern_name_address_ & (size_t((write_pointer_.row << 2)&~31) | 0x3c00);
size_t pattern_base = pattern_generator_table_address_;
size_t colour_base = colour_table_address_;
@@ -562,17 +562,20 @@ class Base {
if(screen_mode_ == ScreenMode::Graphics) {
// If this is high resolution mode, allow the row number to affect the pattern and colour addresses.
pattern_base &= static_cast<size_t>(0x2000 | ((write_pointer_.row & 0xc0) << 5));
colour_base &= static_cast<size_t>(0x2000 | ((write_pointer_.row & 0xc0) << 5));
pattern_base &= size_t(0x2000 | ((write_pointer_.row & 0xc0) << 5));
colour_base &= size_t(0x2000 | ((write_pointer_.row & 0xc0) << 5));
colour_base += static_cast<size_t>(write_pointer_.row & 7);
colour_base += size_t(write_pointer_.row & 7);
colour_name_shift = 0;
} else {
colour_base &= size_t(0xffc0 | (write_pointer_.row & 7));
pattern_base &= size_t(0x3800);
}
if(screen_mode_ == ScreenMode::MultiColour) {
pattern_base += static_cast<size_t>((write_pointer_.row >> 2) & 7);
pattern_base += size_t((write_pointer_.row >> 2) & 7);
} else {
pattern_base += static_cast<size_t>(write_pointer_.row & 7);
pattern_base += size_t(write_pointer_.row & 7);
}
switch(start) {