Subversion Repositories Shiroi

/* $Id: shiroi_math_mk_i.c 1 2024-08-28 08:10:28Z nishi $ */
#include "shiroi_math_mk_i.h"

#include "shiroi.h"

#include "am9511.h"

void shiroi_math_mk_i_install(shiroi_t* shiroi, int slot) {
        shiroi->cards[slot].type = SHIROI_MATH_MARK_I;
        shiroi->cards[slot].mathptr = &shiroi->cards[slot].math;

        shiroi->cards[slot].math.am9511 = am_create(0, 0);
}

void shiroi_math_mk_i(shiroi_t* shiroi) {
        int i;

        uint16_t io = Z80_GET_ADDR(shiroi->z80_pins);
        uint16_t addr = io & 0xff;
        uint16_t data = (io >> 8) & 0xff;

        for(i = 0; i < 256 / SHIROI_IO_PORTS; i++) {
                if(shiroi->cards[i].type == SHIROI_MATH_MARK_I) {
                        if(shiroi->z80_pins & Z80_RD) {
                                /* I/O Read */
                                if(addr == 6) {
                                        Z80_SET_DATA(shiroi->z80_pins, am_pop(shiroi->cards[i].math.am9511));
                                } else if(addr == 8) {
                                        Z80_SET_DATA(shiroi->z80_pins, shiroi->cards[i].type);
                                }
                        } else if(shiroi->z80_pins & Z80_WR) {
                                /* I/O Write */
                                if(addr == 6) {
                                        am_push(shiroi->cards[i].math.am9511, data);
                                } else if(addr == 7) {
                                        am_command(shiroi->cards[i].math.am9511, data);
                                }
                        }
                }
        }
}

void shiroi_math_mk_i_tick(shiroi_t* shiroi) {}