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At least attempts to use proper addressing for sprite info fetches.

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This commit is contained in:
Thomas Harte 2018-10-07 14:32:20 -04:00
parent 338aec2930
commit bfb9d8ccb6
1 changed files with 6 additions and 3 deletions
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9
Components/9918/Implementation/9918Base.hpp
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@ -581,7 +581,10 @@ class Base {
template<bool use_end> void fetch_sms(int start, int end) {
#define sprite_fetch(sprite) {\
sprite_set_.active_sprites[sprite].shift_position = -ram_[sprite_attribute_table_address_ + 128 + (sprite_set_.active_sprites[sprite].index << 1)] + (master_system_.shift_sprites_8px_left ? 8 : 0); \
sprite_set_.active_sprites[sprite].shift_position = \
-ram_[\
(sprite_attribute_table_address_ | 0x7f) & (0x3f80 | (sprite_set_.active_sprites[sprite].index << 1))\
] + (master_system_.shift_sprites_8px_left ? 8 : 0); \
sprite_set_.active_sprites[sprite].image[0] = \
sprite_set_.active_sprites[sprite].image[1] = \
sprite_set_.active_sprites[sprite].image[2] = \
@ -612,8 +615,8 @@ class Base {
#define sprite_y_read(location, sprite) \
slot(location): \
posit_sprite(sprite, ram_[sprite_attribute_table_address_ + sprite], row_); \
posit_sprite(sprite, ram_[sprite_attribute_table_address_ + sprite + 1], row_); \
posit_sprite(sprite, ram_[(sprite_attribute_table_address_ | 0x7f) & (sprite | 0x3f00)], row_); \
posit_sprite(sprite, ram_[(sprite_attribute_table_address_ | 0x7f) & ((sprite + 1) | 0x3f00)], row_); \
#define fetch_tile_name(column) {\
const size_t scrolled_column = (column - horizontal_offset) & 0x1f;\