66 lines
1.9 KiB
C
66 lines
1.9 KiB
C
/*
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* hello — smoke test for the two output APIs:
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*
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* stdio (printf/puts/putchar) — FAST, no attribute (ambient colour)
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* conio (cprintf/cputs/putch) — SLOWER, applies textcolor/textbackground
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*
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* Demonstrates textcolor/textbackground (Turbo-C-compatible names).
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*/
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#include <stdio.h>
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#include <conio.h>
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#include <gfx.h>
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#include <sprinter.h>
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#include <sprinter_exit.h>
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#include <errno.h>
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int main(void)
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{
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errno = -1;
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int16_t a0 = 0, a1 = 0;
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a0 = get_text_attr();
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uint8_t vMode = get_videotextmode();
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set_videotextmode(TEXT_MODE_80x32);
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/* Wipe the screen with a known attribute so stdio printf/puts inherit
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* a clean colour for the cursor. */
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clrscr_attr(COLOR(COLOR_LIGHTGRAY, COLOR_BLACK));
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/* --- stdio set: fast, no attribute ------------------------------- */
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puts("hello (stdio) - fast PCHARS, ambient colour");
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printf("printf: a0=%d (initial attr)\n", a0);
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/* --- conio set: applies textcolor / textbackground --------------- */
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textcolor(COLOR_YELLOW);
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textbackground(COLOR_BLUE);
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cputs("conio: yellow on blue\r\n");
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textcolor(COLOR_LIGHTRED);
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textbackground(COLOR_BLACK);
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cprintf("cprintf %d %d %s\r\n", 42, -7, "args");
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/* set_text_attr / textattr replace the whole byte. */
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textattr(COLOR(COLOR_LIGHTGREEN, COLOR_BLACK));
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cputs("conio: light-green via textattr\r\n");
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/* Opting out of attribute control — conio falls back to fast path. */
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set_text_attr(KEEP_EXIST_ATTR);
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cputs("conio with KEEP_EXIST_ATTR (fast path)\r\n");
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a1 = get_text_attr();
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/* Back to a normal attribute so the goodbye reads cleanly. */
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textattr(COLOR(COLOR_LIGHTGRAY, COLOR_BLACK));
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cprintf("a0=%d a1=%d now=%d errno=%d\n\r",
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a0, a1, get_text_attr(), errno);
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#ifdef DEBUG_RT
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printf("w2_self_allocated = %u\n", w2_self_allocated);
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#endif
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cputs("Press any key to exit...");
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(void)getchar();
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set_videotextmode(vMode);
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return 0;
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}
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