mirror of
https://github.com/V2RetroComputing/analog-firmware.git
synced 2024-10-19 13:25:30 +00:00
172 lines
6.5 KiB
C
172 lines
6.5 KiB
C
#include <string.h>
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#include <pico/stdlib.h>
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#include <hardware/timer.h>
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#include "common/config.h"
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#include "vga/vgabuf.h"
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#include "vga/render.h"
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#include "vga/vgaout.h"
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#include "vga/logo.h"
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#include "common/build.h"
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#include <pico/unique_id.h>
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#define _PIXPAIR(p1, p2) ((uint32_t)(p1) | (((uint32_t)p2) << 16))
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char __attribute__((section(".uninitialized_data."))) error_message[40*24+1];
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void DELAYED_COPY_CODE(render_test_print)(int y, int x, char *str) {
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memcpy(error_message + (y*40) + x, str, strlen(str));
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}
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void DELAYED_COPY_CODE(render_test_cprint)(int y, char *str) {
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int x = 20 - ((strlen(str)+1)/2);
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memcpy(error_message + (y*40) + x, str, strlen(str));
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}
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void DELAYED_COPY_CODE(render_test_init)() {
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int y = 0;
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memset(error_message, ' ', sizeof(error_message)-1);
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error_message[sizeof(error_message)-1] = 0;
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y+=2;
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render_test_cprint(y++, "V2 Retro Computing");
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render_test_cprint(y++, "Analog VGA");
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y++;
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render_test_cprint(y++, "Copyright (C) 2022-2023");
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render_test_cprint(y++, "David Kuder");
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y++;
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render_test_cprint(y++, "based on");
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render_test_cprint(y++, "AppleII-VGA by Mark Aikens");
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y++;
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render_test_cprint(y++, "no Apple II bus activity");
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y++;
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render_test_cprint(y++, "Turn off power & check");
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render_test_cprint(y++, "for proper card insertion.");
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y++;
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render_test_cprint(y++, "FIRMWARE: " BUILDSTR);
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render_test_cprint(y++, "HARDWARE: " HWSTRING);
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render_test_print(y, 4, "SERIALNO: ");
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// Get Pico's Flash Serial Number (Board ID) and terminating null.
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pico_get_unique_board_id_string(error_message + (y*40)+20, 17);
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error_message[(y*40)+36] = ' ';
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}
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// Clear the error message, in case the user sets 0x20 in terminal switches
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// to show the about screen.
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void DELAYED_COPY_CODE(render_about_init)() {
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memset(error_message + 11*40, ' ', 160);
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}
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static inline uint_fast8_t char_test_bits(uint_fast8_t ch, uint_fast8_t glyph_line) {
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return terminal_character_rom[((uint_fast16_t)(ch & 0x7f) << 4) | glyph_line];
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}
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void DELAYED_COPY_CODE(render_testpattern)() {
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uint16_t color1, color2, i;
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vga_prepare_frame();
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for(uint line=0; line < VGA_HEIGHT;) {
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struct vga_scanline *sl = vga_prepare_scanline();
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uint sl_pos = 0;
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sl->repeat_count = 0;
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if(line >= VGA_HEIGHT) {
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sl->data[sl_pos++] = _PIXPAIR(_RGB(0, 0, 0), _RGB(0, 0, 0));
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sl->length = sl_pos;
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} else if((line <= 1) || (line >= VGA_HEIGHT-2)) {
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// Solid White Top & Bottom
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for(i = 0; i < VGA_WIDTH; i+=16) {
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sl->data[sl_pos++] = _PIXPAIR(_RGB(255, 255, 255) | THEN_EXTEND_7, _RGB(255, 255, 255) | THEN_EXTEND_7);
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}
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sl->repeat_count = 1;
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sl->length = sl_pos;
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} else if((line > 40) && (line < VGA_HEIGHT-40)) {
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const uint16_t double_line = ((line-40) / 2);
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// Screen Edge
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sl->data[sl_pos++] = _PIXPAIR(_RGB(255, 255, 255) | THEN_EXTEND_1, _RGB(0, 0, 0) | THEN_EXTEND_1);
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sl->data[sl_pos++] = _PIXPAIR(_RGB(0, 0, 0) | THEN_EXTEND_1, _RGB(0, 0, 0) | THEN_EXTEND_1);
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// Logo 150x200
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for(i=0; i < 75; i++) {
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color1 = lores_palette[PicoPalLogo[(double_line*75) + i] >> 4];
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color2 = lores_palette[PicoPalLogo[(double_line*75) + i] & 0xf];
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sl->data[sl_pos++] = _PIXPAIR(color1 | THEN_EXTEND_1, color2 | THEN_EXTEND_1);
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}
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// 4 Black pixels
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sl->data[sl_pos++] = _PIXPAIR(_RGB(0, 0, 0) | THEN_EXTEND_1, _RGB(0, 0, 0) | THEN_EXTEND_1);
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const uint text_line = (double_line / 10);
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const uint glyph_line = (double_line % 10);
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for(i=0; i < 40; i++) {
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uint32_t bits = char_test_bits(error_message[text_line * 40 + i], glyph_line);
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for(uint j=0; j < 4; j++) {
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uint32_t pixeldata = (bits & 0x80) ? (_RGB(255, 255, 255)) : (_RGB(0, 0, 0));
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pixeldata |= (bits & 0x40) ?
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((uint32_t)_RGB(255, 255, 255)) << 16 :
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((uint32_t)_RGB(0, 0, 0)) << 16;
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bits <<= 2;
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sl->data[sl_pos++] = pixeldata;
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}
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}
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// Screen Edge
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sl->data[sl_pos++] = _PIXPAIR(_RGB(0, 0, 0) | THEN_EXTEND_1, _RGB(0, 0, 0) | THEN_EXTEND_1);
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sl->data[sl_pos++] = _PIXPAIR(_RGB(0, 0, 0) | THEN_EXTEND_1, _RGB(255, 255, 255) | THEN_EXTEND_1);
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sl->repeat_count = 1;
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sl->length = sl_pos;
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} else {
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// Screen Edge
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sl->data[sl_pos++] = _PIXPAIR(_RGB(255, 255, 255) | THEN_EXTEND_1, _RGB(0, 0, 0) | THEN_EXTEND_1);
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sl->data[sl_pos++] = _PIXPAIR(_RGB(0, 0, 0) | THEN_EXTEND_1, _RGB(0, 0, 0) | THEN_EXTEND_1);
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for(i = 0; i < VGA_WIDTH-16; i+=16) {
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sl->data[sl_pos++] = _PIXPAIR(_RGB(0, 0, 0) | THEN_EXTEND_7, _RGB(0, 0, 0) | THEN_EXTEND_7);
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}
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// Screen Edge
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sl->data[sl_pos++] = _PIXPAIR(_RGB(0, 0, 0) | THEN_EXTEND_1, _RGB(0, 0, 0) | THEN_EXTEND_1);
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sl->data[sl_pos++] = _PIXPAIR(_RGB(0, 0, 0) | THEN_EXTEND_1, _RGB(255, 255, 255) | THEN_EXTEND_1);
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sl->length = sl_pos;
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}
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line += sl->repeat_count + 1;
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vga_submit_scanline(sl);
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}
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}
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void DELAYED_COPY_CODE(render_status_line)() {
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for(uint glyph_line=0; glyph_line < 8; glyph_line++) {
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struct vga_scanline *sl = vga_prepare_scanline();
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uint8_t *line_buf = status_line;
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uint32_t bits;
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uint sl_pos = 0;
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for(uint col=0; col < 80; col++) {
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// Grab 8 pixels from the next character
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if(*line_buf != 0) {
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bits |= char_test_bits(line_buf[col], glyph_line);
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}
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// Translate each pair of bits into a pair of pixels
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for(int i=0; i < 4; i++) {
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uint32_t pixeldata = (bits & 0x80) ? (_RGB(255, 255, 255)) : (_RGB(0, 0, 0));
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pixeldata |= (bits & 0x40) ?
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((uint32_t)_RGB(255, 255, 255)) << 16 :
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((uint32_t)_RGB(0, 0, 0)) << 16;
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bits <<= 2;
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sl->data[sl_pos++] = pixeldata;
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}
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}
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sl->length = sl_pos;
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sl->repeat_count = 1;
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vga_submit_scanline(sl);
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}
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}
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