mirror of
https://github.com/V2RetroComputing/analog-firmware.git
synced 2024-06-01 06:41:34 +00:00
9727add223
Bypass legacy 80 column card when in SHR rendering mode Mask unused palette bits that were causing VGA PIO to fail Fixed color calculation for AGS hardware
54 lines
1.3 KiB
C
54 lines
1.3 KiB
C
#pragma once
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#include <stdint.h>
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#define VGA_WIDTH 640
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#define VGA_HEIGHT 480
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#ifdef ANALOG_GS
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#define THEN_WAIT_VSYNC (2 << 12)
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#define THEN_WAIT_HSYNC (3 << 12)
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#define THEN_EXTEND_31 (4 << 12)
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#define THEN_EXTEND_15 (5 << 12)
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#define THEN_EXTEND_13 (6 << 12)
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#define THEN_EXTEND_7 (7 << 12)
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#define THEN_EXTEND_6 (8 << 12)
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#define THEN_EXTEND_3 (9 << 12)
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#define THEN_EXTEND_1 (10 << 12)
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#else
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#define THEN_WAIT_VSYNC (2 << 9)
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#define THEN_WAIT_HSYNC (3 << 9)
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#define THEN_EXTEND_31 (4 << 9)
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#define THEN_EXTEND_15 (5 << 9)
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#define THEN_EXTEND_13 (6 << 9)
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#define THEN_EXTEND_7 (7 << 9)
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#define THEN_EXTEND_6 (8 << 9)
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#define THEN_EXTEND_3 (9 << 9)
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#define THEN_EXTEND_1 (10 << 9)
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#endif
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struct vga_scanline {
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// number of 32-bit words in the data array
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uint_fast16_t length;
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// number of times to repeat the scanline
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uint_fast16_t repeat_count;
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volatile uint_fast8_t _flags;
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uint32_t _sync;
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uint32_t data[(VGA_WIDTH/2)+8];
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};
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extern void vga_prepare_frame();
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extern struct vga_scanline *vga_prepare_scanline();
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extern struct vga_scanline *vga_prepare_scanline_quick();
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extern void vga_submit_scanline(struct vga_scanline *scanline);
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extern void vga_stop();
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extern void vga_dpms_sleep();
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extern void vga_dpms_wake();
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extern void terminal_process_input();
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