diff options
Diffstat (limited to 'vdp.h')
| -rw-r--r-- | vdp.h | 42 |
1 files changed, 31 insertions, 11 deletions
@@ -1,3 +1,8 @@ +/* + Copyright 2013 Michael Pavone + This file is part of BlastEm. + BlastEm is free software distributed under the terms of the GNU General Public License version 3 or greater. See COPYING for full license text. +*/ #ifndef VDP_H_ #define VDP_H_ @@ -19,13 +24,15 @@ #define FBUF_SHADOW 0x0001 #define FBUF_HILIGHT 0x0010 -#define FBUF_BIT_PRIORITY 0x1000 -#define FBUF_SRC_MASK 0xE000 -#define FBUF_SRC_A 0x0000 -#define FBUF_SRC_W 0x2000 -#define FBUF_SRC_B 0x4000 -#define FBUF_SRC_S 0x6000 -#define FBUF_SRC_BG 0x8000 +#define DBG_SHADOW 0x10 +#define DBG_HILIGHT 0x20 +#define DBG_PRIORITY 0x8 +#define DBG_SRC_MASK 0x7 +#define DBG_SRC_A 0x1 +#define DBG_SRC_W 0x2 +#define DBG_SRC_B 0x3 +#define DBG_SRC_S 0x4 +#define DBG_SRC_BG 0x0 #define MCLKS_LINE 3420 @@ -40,6 +47,7 @@ #define FLAG2_VINT_PENDING 0x01 #define FLAG2_HINT_PENDING 0x02 +#define FLAG2_READ_PENDING 0x04 #define DISPLAY_ENABLE 0x40 @@ -102,6 +110,8 @@ typedef struct { int16_t y; } sprite_info; +#define FIFO_SIZE 4 + typedef struct { uint32_t cycle; uint16_t address; @@ -111,8 +121,9 @@ typedef struct { } fifo_entry; typedef struct { - fifo_entry *fifo_cur; - fifo_entry *fifo_end; + fifo_entry fifo[FIFO_SIZE]; + int32_t fifo_write; + int32_t fifo_read; uint16_t address; uint8_t cd; uint8_t flags; @@ -128,6 +139,7 @@ typedef struct { void *evenbuf; uint16_t cram[CRAM_SIZE]; uint32_t colors[CRAM_SIZE*3]; + uint32_t debugcolors[1 << (3 + 1 + 1 + 1)];//3 bits for source, 1 bit for priority, 1 bit for shadow, 1 bit for hilight uint16_t vsram[VSRAM_SIZE]; uint8_t latched_mode; uint16_t hscroll_a; @@ -140,13 +152,16 @@ typedef struct { sprite_info sprite_info_list[MAX_SPRITES_LINE]; uint16_t col_1; uint16_t col_2; - uint16_t dma_val; + uint16_t hv_latch; uint8_t v_offset; uint8_t dma_cd; uint8_t hint_counter; uint8_t flags2; uint8_t double_res; uint8_t b32; + uint8_t buf_a_off; + uint8_t buf_b_off; + uint8_t debug; uint8_t *tmp_buf_a; uint8_t *tmp_buf_b; } vdp_context; @@ -158,12 +173,14 @@ uint32_t vdp_run_to_vblank(vdp_context * context); //runs until the target cycle is reached or the current DMA operation has completed, whicever comes first void vdp_run_dma_done(vdp_context * context, uint32_t target_cycles); uint8_t vdp_load_gst(vdp_context * context, FILE * state_file); -void vdp_save_state(vdp_context * context, FILE * outfile); +uint8_t vdp_save_gst(vdp_context * context, FILE * outfile); int vdp_control_port_write(vdp_context * context, uint16_t value); int vdp_data_port_write(vdp_context * context, uint16_t value); +void vdp_test_port_write(vdp_context * context, uint16_t value); uint16_t vdp_control_port_read(vdp_context * context); uint16_t vdp_data_port_read(vdp_context * context); uint16_t vdp_hv_counter_read(vdp_context * context); +uint16_t vdp_test_port_read(vdp_context * context); void vdp_adjust_cycles(vdp_context * context, uint32_t deduction); uint32_t vdp_next_hint(vdp_context * context); uint32_t vdp_next_vint(vdp_context * context); @@ -171,5 +188,8 @@ uint32_t vdp_next_vint_z80(vdp_context * context); void vdp_int_ack(vdp_context * context, uint16_t int_num); void vdp_print_sprite_table(vdp_context * context); void vdp_print_reg_explain(vdp_context * context); +void latch_mode(vdp_context * context); + +extern int32_t color_map[1 << 12]; #endif //VDP_H_ |