snark13
c9d5ea35a4
Direct __naked z80 wrappers over BIOS LP_PRINT_*/LP_SET_PLACE/LP_GET_PLACE (RST 8, opcodes 081h-08Eh) for fast text rendering — a single BIOS call replaces a wrchar() loop for constant-attribute/constant-character runs. Covered by tests/bios_text. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
111 lines
3.1 KiB
C
111 lines
3.1 KiB
C
#include <stdio.h>
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#include <conio.h>
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#include <bios/text.h>
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/*
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* Exercises every BIOS text wrapper from <bios/text.h>:
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* bios_set_place / bios_get_place
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* bios_fillchar / bios_fillchar_noattr / bios_fillattr
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* bios_writeattr / bios_write
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* bios_writeattr_until / bios_write_until (pad to length)
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* bios_writeattr_stop / bios_write_stop (stop at separator)
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* bios_clearwin / bios_clearwin_ch
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* bios_scrollwin
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*
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* `s` below is a static buffer (not a string literal) so its address is
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* always inside window 2, as the BIOS print routines require.
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*/
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static char s[16];
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int main(void)
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{
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clrscr();
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/* Step 0 check: does LP_PRINT_LN advance the BIOS "place" cursor
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* by the number of characters printed, or leave it untouched?
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* "Hello" is 5 chars -> if place advances, before=(20,5),
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* after=(20,10); if not, after == before. */
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s[0]='H'; s[1]='e'; s[2]='l'; s[3]='l'; s[4]='o';
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bios_set_place(20, 5);
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{
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uint16_t before = bios_get_place();
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bios_writeattr(s, 5, COLOR(COLOR_WHITE, COLOR_BLACK));
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uint16_t after = bios_get_place();
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gotoxy(2, 0);
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textattr(0x0F);
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printf("STEP0: before row=%u col=%u\n", before >> 8, before & 0xFF);
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printf("STEP0: after row=%u col=%u\n", after >> 8, after & 0xFF);
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printf("STEP0: expect after col=10 if place advances,\n");
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printf(" col=5 if it does NOT advance.\n");
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}
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(void)getch();
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bios_set_place(1, 2);
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bios_fillcharattr('*', COLOR(COLOR_YELLOW, COLOR_BLUE), 10);
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(void)getch();
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bios_set_place(2, 2);
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textattr(COLOR(COLOR_WHITE, COLOR_BLACK));
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cputs("attr already on screen ->");
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(void)getch();
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bios_set_place(2, 27);
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bios_fillchar('#', 10);
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(void)getch();
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bios_set_place(3, 2);
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bios_fillattr(COLOR(COLOR_BLACK, COLOR_LIGHTGREEN), 20);
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(void)getch();
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s[0]='H'; s[1]='e'; s[2]='l'; s[3]='l'; s[4]='o';
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bios_set_place(5, 2);
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bios_writeattr(s, 5, COLOR(COLOR_LIGHTRED, COLOR_BLACK));
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(void)getch();
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bios_set_place(6, 2);
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bios_write(s, 5);
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(void)getch();
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s[0]='A'; s[1]='B'; s[2]=':'; s[3]='X'; s[4]='Y'; s[5]='Z';
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bios_set_place(8, 2);
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bios_writeattr_until(s, 12, COLOR(COLOR_CYAN, COLOR_BLACK), ':');
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(void)getch();
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bios_set_place(9, 2);
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bios_write_until(s, 12, ':');
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(void)getch();
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bios_set_place(10, 2);
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bios_writeattr_stop(s, 12, COLOR(COLOR_MAGENTA, COLOR_BLACK), ':');
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(void)getch();
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bios_set_place(11, 2);
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bios_write_stop(s, 12, ':');
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(void)getch();
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bios_clearwin(13, 2, 4, 20, COLOR(COLOR_BLACK, COLOR_RED));
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bios_clearwin_ch(13, 25, 4, 20, COLOR(COLOR_WHITE, COLOR_BLUE), '.');
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(void)getch();
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bios_set_place(18, 2);
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(void)getch();
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cputs("place test ->");
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{
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uint16_t place = bios_get_place();
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printf(" row=%u col=%u\n", place >> 8, place & 0xFF);
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}
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(void)getch();
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gotoxy(2, 20);
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for (int i = 0; i < 6; i++) {
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textattr(0x0F);
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printf("scroll line %d\n", i);
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}
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(void)getch();
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bios_scrollwin(BIOS_SCROLL_UP, 20, 3);
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(void)getch();
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return 0;
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}
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