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Polprzewodnikowy 2022-01-18 21:53:22 +01:00
parent 7c4b5f7754
commit afc41658e3
3 changed files with 48 additions and 23 deletions
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2
sw/n64/Makefile
View File

@ -5,7 +5,7 @@ OBJCOPY = $(TOOLCHAIN)objcopy
OBJDUMP = $(TOOLCHAIN)objdump
SIZE = $(TOOLCHAIN)size
FLAGS = -march=vr4300 -mtune=vr4300 -falign-functions=32 $(USER_FLAGS)
FLAGS = -march=vr4300 -mtune=vr4300 $(USER_FLAGS)
CFLAGS = -Os -Wall -ffunction-sections -fdata-sections -ffreestanding -MMD -MP
ASFLAGS = -Wa,-I$(N64_INST)/mips64-elf/lib
LDFLAGS = -lc -nostartfiles -Wl,--gc-sections

65
sw/n64/src/exception.c
View File

@ -64,13 +64,14 @@ typedef struct {
#define SYSCALL_CODE_BIT (6)
#define SCREEN_WIDTH (640)
#define SCREEN_HEIGHT (240)
#define SCREEN_HEIGHT_NTSC (240)
#define SCREEN_HEIGHT_PAL (288)
#define BORDER_WIDTH (32)
#define BORDER_HEIGHT (16)
#define BACKGROUND_COLOR (0xFFFFFFFFUL)
#define FOREGROUND_COLOR (0x000000FFUL)
#define BORDER_COLOR (0x2F2F2FFFUL)
#define BORDER_COLOR (0x080808FFUL)
#define LINE_HEIGHT (10)
#define START_X_OFFSET (19)
@ -79,51 +80,71 @@ typedef struct {
extern const io32_t entry_handler __attribute__((section(".data")));
static const vi_regs_t vi_config[] = {{
.CR = VI_CR_TYPE_32,
.CR = (
VI_CR_PIXEL_ADVANCE_1 |
VI_CR_PIXEL_ADVANCE_0 |
VI_CR_ANTIALIAS_1 |
VI_CR_ANTIALIAS_0 |
VI_CR_GAMMA_ON |
VI_CR_TYPE_32
),
.H_WIDTH = SCREEN_WIDTH,
.V_INTR = 512,
.CURR_LINE = 0,
.V_INTR = 0x000003FF,
.CURR_LINE = 0x00000000,
.TIMING = 0x0404233A,
.V_SYNC = 625,
.V_SYNC = 0x00000271,
.H_SYNC = 0x00150C69,
.H_SYNC_LEAP = 0x0C6F0C6E,
.H_LIMITS = 0x00800300,
.V_LIMITS = 0x005F0239,
.V_LIMITS = 0x002D026D,
.COLOR_BURST = 0x00090268,
.H_SCALE = ((0x100 * SCREEN_WIDTH) / 160),
.V_SCALE = ((0x100 * SCREEN_HEIGHT) / 60),
.H_SCALE = 0x00000400,
.V_SCALE = 0x00000400,
}, {
.CR = VI_CR_TYPE_32,
.CR = (
VI_CR_PIXEL_ADVANCE_1 |
VI_CR_PIXEL_ADVANCE_0 |
VI_CR_ANTIALIAS_1 |
VI_CR_ANTIALIAS_0 |
VI_CR_GAMMA_ON |
VI_CR_TYPE_32
),
.H_WIDTH = SCREEN_WIDTH,
.V_INTR = 512,
.CURR_LINE = 0,
.V_INTR = 0x000003FF,
.CURR_LINE = 0x00000000,
.TIMING = 0x03E52239,
.V_SYNC = 525,
.V_SYNC = 0x0000020D,
.H_SYNC = 0x00000C15,
.H_SYNC_LEAP = 0x0C150C15,
.H_LIMITS = 0x006C02EC,
.V_LIMITS = 0x002501FF,
.V_LIMITS = 0x00230203,
.COLOR_BURST = 0x000E0204,
.H_SCALE = ((0x100 * SCREEN_WIDTH) / 160),
.V_SCALE = ((0x100 * SCREEN_HEIGHT) / 60),
.H_SCALE = 0x00000400,
.V_SCALE = 0x00000400,
}};
static const int screen_heights[] = {
SCREEN_HEIGHT_PAL,
SCREEN_HEIGHT_NTSC,
};
static int screen_heigth;
static io32_t *exception_framebuffer;
static void exception_init_screen (void) {
const vi_regs_t *cfg = &vi_config[OS_INFO->tv_type];
screen_heigth = screen_heights[OS_INFO->tv_type];
exception_framebuffer = (io32_t *) (((io32_t) (&entry_handler)) - (SCREEN_WIDTH * screen_heigth * sizeof(io32_t)));
exception_framebuffer = (io32_t *) (((io32_t) (&entry_handler)) - (SCREEN_WIDTH * SCREEN_HEIGHT * sizeof(io32_t)));
for (int y = 0; y < SCREEN_HEIGHT; y++) {
for (int y = 0; y < screen_heigth; y++) {
for (int x = 0; x < SCREEN_WIDTH; x++) {
uint32_t color;
if (
(x < (BORDER_WIDTH - FONT_WIDTH)) ||
(x > (SCREEN_WIDTH - BORDER_WIDTH + FONT_WIDTH)) ||
(x > (SCREEN_WIDTH - (BORDER_WIDTH - FONT_WIDTH))) ||
(y < (BORDER_HEIGHT - FONT_HEIGHT)) ||
(y > (SCREEN_HEIGHT - BORDER_HEIGHT + FONT_HEIGHT))
(y > (screen_heigth - (BORDER_HEIGHT - FONT_HEIGHT)))
) {
color = BORDER_COLOR;
} else {
@ -172,7 +193,7 @@ static void exception_draw_character (char c) {
int c_x = x + (i % FONT_WIDTH);
int c_y = y + (i / FONT_WIDTH);
if ((c_x >= (SCREEN_WIDTH - BORDER_WIDTH)) || (c_y >= (SCREEN_HEIGHT - BORDER_HEIGHT))) {
if ((c_x >= (SCREEN_WIDTH - BORDER_WIDTH)) || (c_y >= (screen_heigth - BORDER_HEIGHT))) {
break;
}

4
sw/n64/src/io.h
View File

@ -145,6 +145,10 @@ typedef struct {
#define VI_CR_SERRATE_ON (1 << 6)
#define VI_CR_ANTIALIAS_0 (1 << 8)
#define VI_CR_ANTIALIAS_1 (1 << 9)
#define VI_CR_PIXEL_ADVANCE_0 (1 << 12)
#define VI_CR_PIXEL_ADVANCE_1 (1 << 13)
#define VI_CR_PIXEL_ADVANCE_2 (1 << 14)
#define VI_CR_PIXEL_ADVANCE_3 (1 << 15)
#define VI_CR_DITHER_FILTER_ON (1 << 16)