snark13
49a87b4d02
palette.h/video/palette.c wrap BIOS $A4 PIC_SET_PAL/PIC_GET_PAL and $A6 SET_PAL_INIT for the 8 palette pages (0-3 graphics, 4-7 text planes). gfx_palette.c and conio/text_palette.c are thin per-domain wrappers; text_palette.c maps the text "plane" 0..3 (paper/ink/blink-paper/ blink-ink) onto BIOS pages 4..7. Covered by tests/text_palette. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
43 lines
1.1 KiB
C
43 lines
1.1 KiB
C
/*
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* text_palette.c — text-mode palette wrappers.
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*
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* Thin layer over libc/video/palette.c. Translates the text "plane
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* number" 0..3 (paper/ink/blink-paper/blink-ink) into the underlying
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* BIOS palette page 4..7 used by $A4.
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*
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* For an introduction to the four-plane text colour model see
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* <palette.h> (top-of-file doc-block).
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*/
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#include <stdint.h>
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#include <conio.h>
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#include <palette.h>
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void text_pal_load(uint8_t plane, uint8_t start, uint8_t count,
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const uint8_t *data)
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{
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pal_load((uint8_t)(plane + 4u), start, count, data);
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}
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void text_pal_set_color(uint8_t plane, uint8_t attr,
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uint8_t r, uint8_t g, uint8_t b)
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{
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pal_set_color((uint8_t)(plane + 4u), attr, r, g, b);
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}
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void text_pal_get(uint8_t plane, uint8_t start, uint8_t count, uint8_t *data)
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{
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pal_get((uint8_t)(plane + 4u), start, count, data);
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}
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void text_pal_get_color(uint8_t plane, uint8_t attr,
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uint8_t *r, uint8_t *g, uint8_t *b)
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{
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pal_get_color((uint8_t)(plane + 4u), attr, r, g, b);
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}
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void text_pal_reset(void)
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{
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pal_reset(PAL_CGA);
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}
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