mirror of
https://github.com/V2RetroComputing/analog.git
synced 2024-06-06 04:29:32 +00:00
118 lines
2.9 KiB
C
118 lines
2.9 KiB
C
#include <stdio.h>
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#include <pico/stdlib.h>
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#include <pico/multicore.h>
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#include <hardware/pio.h>
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#include "common/abus.h"
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#include "common/config.h"
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#include "common/modes.h"
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#include "common/buffers.h"
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#include "common/flash.h"
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#include "pico_hal.h"
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#ifdef RASPBERRYPI_PICO_W
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#include <pico/cyw43_arch.h>
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#endif
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static void __time_critical_func(core1_loop)() {
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for(;;) {
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uint32_t value = pio_sm_get_blocking(CONFIG_ABUS_PIO, ABUS_MAIN_SM);
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uint32_t address = (value >> 10) & 0xffff;
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// device read access
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if((value & (1u << CONFIG_PIN_APPLEBUS_RW-CONFIG_PIN_APPLEBUS_DATA_BASE)) != 0) {
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if(CARD_SELECT) {
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pio_sm_put_blocking(CONFIG_ABUS_PIO, ABUS_DEVICE_READ_SM, apple_memory[address]);
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}
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}
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if(CARD_SELECT) {
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if(CARD_DEVSEL) {
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cardslot = (address >> 4) & 0x7;
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} else if(CARD_IOSEL) {
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cardslot = (address >> 8) & 0x7;
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// Config memory in card slot-rom address space
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if(((value & (1u << CONFIG_PIN_APPLEBUS_RW-CONFIG_PIN_APPLEBUS_DATA_BASE)) == 0) && ((address & 0xF0) == 0xF0)) {
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apple_memory[address] = value;
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}
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}
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}
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switch(current_mode) {
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case MODE_DIAG:
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diag_businterface(address, value);
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break;
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case MODE_FS:
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fs_businterface(address, value);
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break;
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case MODE_VGACARD:
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vga_businterface(address, value);
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break;
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case MODE_APPLICARD:
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z80_businterface(address, value);
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break;
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case MODE_SERIAL:
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serial_businterface(address, value);
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break;
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case MODE_PARALLEL:
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parallel_businterface(address, value);
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break;
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}
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}
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}
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static void core0_loop() {
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for(;;) {
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switch(current_mode) {
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case MODE_DIAG:
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diagmain();
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break;
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case MODE_FS:
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fsmain();
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break;
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default:
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current_mode = MODE_VGACARD;
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case MODE_VGACARD:
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vgamain();
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break;
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case MODE_APPLICARD:
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z80main();
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break;
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case MODE_SERIAL:
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serialmain();
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break;
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case MODE_PARALLEL:
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parallelmain();
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break;
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}
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}
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}
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int main() {
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// Adjust system clock for better dividing into other clocks
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set_sys_clock_khz(CONFIG_SYSCLOCK*1000, true);
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abus_init();
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memcpy(config_errbuf, "V2ANALOG", 8);
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memset(config_cmdbuf, 0xFF, 8);
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multicore_launch_core1(core1_loop);
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// Sensible defaults if there is no config / fs
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default_config();
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// Try mounting the LittleFS, or format if it isn't there.
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if(pico_mount(0) == LFS_ERR_OK) {
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read_config();
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} else {
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pico_mount(1);
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}
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current_mode = cfg_mode;
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core0_loop();
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return 0;
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}
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