mirror of
https://github.com/V2RetroComputing/analog.git
synced 2024-06-01 17:41:35 +00:00
5cb0c6dab3
Added machine types, character rom fixes, render code consolidation. DPMS Sleep mode when the RP2040 is powered separately from the Apple.
107 lines
3.7 KiB
C
107 lines
3.7 KiB
C
#include <pico/stdlib.h>
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#include "vgabuf.h"
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#include "render.h"
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#include "vgaout.h"
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#define _RGB333(r, g, b) ( \
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(((((uint)(r) * 256 / 36) + 128) / 256) << 6) | \
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(((((uint)(g) * 256 / 36) + 128) / 256) << 3) | \
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((((uint)(b) * 256 / 36) + 128) / 256) \
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)
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uint16_t lores_palette[16] = {
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_RGB333(0x00,0x00,0x00), // black
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_RGB333(0x6c,0x00,0x6c), // magenta
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_RGB333(0x00,0x00,0xb4), // d.blue
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_RGB333(0xb4,0x24,0xfc), // h.violet
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_RGB333(0x00,0x48,0x00), // d.green
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_RGB333(0x48,0x48,0x48), // d.gray
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_RGB333(0x00,0x90,0xfc), // h.blue
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_RGB333(0x6c,0x6c,0xfc), // l.blue
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_RGB333(0x24,0x24,0x00), // brown
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_RGB333(0xfc,0x48,0x00), // h.orange
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_RGB333(0x90,0x90,0x90), // l.gray
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_RGB333(0xfc,0x6c,0xfc), // pink
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_RGB333(0x00,0xd8,0x24), // h.green
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_RGB333(0xd8,0xd8,0x00), // yellow
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_RGB333(0x90,0xfc,0xb4), // aqua
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_RGB333(0xff,0xff,0xff), // white
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};
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#undef _RGB333
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static void render_lores_line(bool p2, uint line);
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//#define PAGE2SEL (!(soft_switches & SOFTSW_80STORE) && (soft_switches & SOFTSW_PAGE_2))
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#define PAGE2SEL ((soft_switches & (SOFTSW_80STORE | SOFTSW_PAGE_2)) == SOFTSW_PAGE_2)
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void __time_critical_func(render_lores)() {
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for(uint line=0; line < 24; line++) {
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render_lores_line(PAGE2SEL, line);
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}
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}
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void __time_critical_func(render_mixed_lores)() {
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for(uint line=0; line < 20; line++) {
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render_lores_line(PAGE2SEL, line);
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}
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for(uint line=20; line < 24; line++) {
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if(soft_switches & SOFTSW_80COL) {
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render_text80_line(PAGE2SEL, line);
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} else {
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render_text40_line(PAGE2SEL, line);
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}
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}
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}
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static void __time_critical_func(render_lores_line)(bool p2, uint line) {
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// Construct two scanlines for the two different colored cells at the same time
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struct vga_scanline *sl1 = vga_prepare_scanline();
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struct vga_scanline *sl2 = vga_prepare_scanline();
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uint sl_pos = 0;
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uint i;
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const uint8_t *line_buf = (const uint8_t *)((p2 ? text_p2 : text_p1) + ((line & 0x7) << 7) + (((line >> 3) & 0x3) * 40));
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// Pad 40 pixels on the left to center horizontally
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for(i = 0; i < 40/8; i++) {
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sl1->data[sl_pos] = (text_border|THEN_EXTEND_3) | ((text_border|THEN_EXTEND_3) << 16); // 8 pixels per word
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sl2->data[sl_pos] = (text_border|THEN_EXTEND_3) | ((text_border|THEN_EXTEND_3) << 16); // 8 pixels per word
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sl_pos++;
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}
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for(i=0; i < 40; i+=2) {
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uint32_t color1 = lores_palette[line_buf[i] & 0xf];
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uint32_t color2 = lores_palette[(line_buf[i] >> 4) & 0xf];
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uint32_t color3 = lores_palette[line_buf[i+1] & 0xf];
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uint32_t color4 = lores_palette[(line_buf[i+1] >> 4) & 0xf];
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// Each lores pixel is 7 hires pixels, or 14 VGA pixels wide
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sl1->data[sl_pos] = (color1|THEN_EXTEND_6) | ((color1|THEN_EXTEND_6) << 16);
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sl2->data[sl_pos] = (color2|THEN_EXTEND_6) | ((color2|THEN_EXTEND_6) << 16);
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sl_pos++;
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sl1->data[sl_pos] = (color3|THEN_EXTEND_6) | ((color3|THEN_EXTEND_6) << 16);
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sl2->data[sl_pos] = (color4|THEN_EXTEND_6) | ((color4|THEN_EXTEND_6) << 16);
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sl_pos++;
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}
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for(i = 0; i < 40/8; i++) {
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sl1->data[sl_pos] = (text_border|THEN_EXTEND_3) | ((text_border|THEN_EXTEND_3) << 16); // 8 pixels per word
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sl2->data[sl_pos] = (text_border|THEN_EXTEND_3) | ((text_border|THEN_EXTEND_3) << 16); // 8 pixels per word
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sl_pos++;
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}
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sl1->length = sl_pos;
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sl1->repeat_count = 7;
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vga_submit_scanline(sl1);
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sl2->length = sl_pos;
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sl2->repeat_count = 7;
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vga_submit_scanline(sl2);
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}
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