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fixed ram location for G-7000 compatibility, added exROM (game VP31 e VP40) support
This commit is contained in:
Andrea Ottaviani 2024-09-05 22:10:17 +02:00 committed by GitHub
parent 09a28af1b2
commit 433d69ebdc
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GPG Key ID: B5690EEEBB952194
1 changed files with 40 additions and 31 deletions
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71
VSC-PicoPAC/picopac_cart.c
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@ -144,7 +144,8 @@ char extram[0xff];
////////////////////////////////////////////////////////////////////////////////////
void error(int numblink){
multicore_lockout_start_blocking();
gpio_init(PICO_DEFAULT_LED_PIN);
sleep_ms(1000);
gpio_init(PICO_DEFAULT_LED_PIN);
gpio_set_dir(PICO_DEFAULT_LED_PIN,GPIO_OUT);
while(1){
@ -180,29 +181,32 @@ void __not_in_flash_func(core1_main()) {
//gpio_set_dir_in_masked(ALWAYS_IN_MASK);
newgame=0;
gamechoosen=0;
// Initial conditions
SET_DATA_MODE_IN;
//SET_DATA_MODE_IN;
while(newgame==0) {
//while(1) {
pins=gpio_get_all();
addr = (pins & 0b0111111111111);
if((gpio_get(CS_PIN)==0) && (gpio_get(WR_PIN)==0)) {
extram[addr & 0xff]=((pins & DATA_PIN_MASK)>>D0_PIN);
if (extram[0x7e]==0x0a) {
gamechoosen=extram[0x7f];
}
} else {
bank=3-((gpio_get(P10_PIN)+(gpio_get(P11_PIN)*2)));
if (gpio_get(PSEN_PIN)==0) {
if (gpio_get(PSEN_PIN)==0) {
SET_DATA_MODE_OUT;
gpio_put_masked(DATA_PIN_MASK,(rom_table[bank][addr])<<D0_PIN);
}
}
if((gpio_get(CS_PIN)==0) && (gpio_get(WR_PIN)==0)) {
extram[addr & 0xff]=((pins & DATA_PIN_MASK)>>D0_PIN);
if (extram[0xff]==0xaa) {
gamechoosen=extram[0xfe];
}
}
SET_DATA_MODE_IN;
}
SET_DATA_MODE_IN;
switch (new_bank_type) {
case 0: // standard 2k / 4k
while(1) {
@ -235,16 +239,18 @@ void __not_in_flash_func(core1_main()) {
break;
case 2: // XROM
while(1) {
pins=gpio_get_all();
pins=gpio_get_all();
addr = (pins & 0b0111111111111); // for all cart but xrom
if ((gpio_get(PSEN_PIN)==0 )) {
SET_DATA_MODE_OUT;
gpio_put_masked(DATA_PIN_MASK,(rom_table[0][addr])<<D0_PIN);
}
if ((gpio_get(P11_PIN)==1 )) {
SET_DATA_MODE_OUT;
gpio_put_masked(DATA_PIN_MASK,(extROM[addr])<<D0_PIN);
}
if ((gpio_get(P11_PIN)==1 && gpio_get(NOTCS_PIN)==1)) {
SET_DATA_MODE_OUT;
gpio_put_masked(DATA_PIN_MASK,(extROM[addr&0x3ff])<<D0_PIN);
} else {
if (gpio_get(PSEN_PIN)==0) {
SET_DATA_MODE_OUT;
gpio_put_masked(DATA_PIN_MASK,(rom_table[0][addr])<<D0_PIN);
}
}
SET_DATA_MODE_IN;
}
break;
@ -558,11 +564,12 @@ int load_newfile(char *filename) {
nb = l/2048; // nb = number of banks, l=file size)
if ((strcmp(filename,"vp_40.bin")==0)||((strcmp(filename,"vp_31.bin")==0))) { // 3k games
if (f_read(&fil, &extROM[0], 1024, &br) != FR_OK) {
error(2);
new_bank_type=2;
if (f_read(&fil, &extROM[0], 1024, &br) != FR_OK) {
// error(2);
}
if (f_read(&fil, &new_rom_table[0][1024], 3072, &br) != FR_OK) {
error(3);
// error(3);
}
} else
@ -607,12 +614,7 @@ void picopac_cart_main()
int ret=0;
int l, nb;
// overclocking isn't necessary for most functions - but XEGS carts weren't working without it
// I guess we might as well have it on all the time.
set_sys_clock_khz(270000, true);
//set_sys_clock_khz(170000, true);
gpio_init_mask(ALL_GPIO_MASK);
@ -628,7 +630,14 @@ void picopac_cart_main()
load_file("/selectgame.bin");
//load_file("/pb_q-bert.bin");
// overclocking isn't necessary for most functions - but XEGS carts weren't working without it
// I guess we might as well have it on all the time.
set_sys_clock_khz(270000, true);
//set_sys_clock_khz(170000, true);
memset(extram,0,0xff);
//load_file("/vp_38.bin");
//load_file("/vp_59_16.bin");