/* p3map.c — экранный отчёт матрицы длинного перебора каталога. */

#include <stdio.h>
#include <stdint.h>
#include <errno.h>
#include <unistd.h>
#include <conio.h>
#include <sprinter_mem.h>

uint16_t p3_enum_mode(uint8_t mode, uint8_t page, int *end_errno) __banked;

int main(void)
{
    uint8_t block;
    uint8_t page;
    uint8_t mode;
    uint16_t count;
    int end_errno;

    (void)settextmode(TEXT_MODE_80x32);
    clrscr_attr(0x17u);
    gotoxy(0u, 0u);
    textattr(0x1Fu);
    cputs("P3 F_NEXT / W3 matrix\r\n\r\n");
    textattr(0x17u);

    block = mem_alloc_pages(1u);
    page = block ? mem_get_page(block, 0u) : 0u;
    printf("EMM: block=%u page=%02X errno=%d\n",
           (unsigned)block, (unsigned)page, errno);
    if (!block || !page) goto done;

    for (mode = 0u; mode != 5u; mode++) {
        errno = 0;
        if (chdir("\\BIGDIR") != 0) {
            printf("mode %u: chdir error=%d\n", (unsigned)mode, errno);
            break;
        }
        count = p3_enum_mode(mode, page, &end_errno);
        printf("mode %u: count=%u end_errno=%d\n",
               (unsigned)mode, (unsigned)count, end_errno);
        errno = 0;
        if (chdir("\\") != 0) {
            printf("root after mode %u: error=%d\n",
                   (unsigned)mode, errno);
            break;
        }
    }

    mem_free_block(block);

done:
    textattr(0x1Eu);
    cputs("\r\nProbe stopped; MAME test will take a snapshot.");
    for (;;) (void)getkey();
}