フォント変更 C 言語ソース | C language for IchigoJam (c4ij, IchigoJam BASIC 1.3.2b13～) https://github.com/IchigoJam/c4ij https://15jamrecipe.jimdofree.com/basic/%E3%83%97%E3%83%AD%E3%82%B0%E3%83%A9%E3%83%A0/%E3%83%95%E3%82%A9%E3%83%B3%E3%83%88%E5%A4%89%E6%9B%B4/

main-changepcg.c

// Change to font #A0-#DF  | C language for IchigoJam (c4ij, IchigoJam BASIC 1.3.2b13+)
// Original https://github.com/IchigoJam/c4ij/blob/master/src/main-exkbd.c
// Copyright (c) 2019 Taisuke Fukuno / BALLOON | FU-SEN
// The MIT License (MIT) - https://mit.balloon.net.eu.org/#2019

#include <std15.h>

__attribute__ ((section(".main")))
int main(int param, int ram, int rom, int (*divfunc)()) {
	int res;
	uint8_t buf[0x100];

	// change flash!
	disable_irq();
	int sec = flash_blankCheck(6, 6) == IAPRESULT_CMD_SUCCESS ? 6 : 7;
	const int sec5 = 5;
	
	// copy sec5 + newdata -> sec
	for (int i = 0; i < 16; i++) {
	// i ==  7 : Keyboard
	// i ==  8 : PCG #00-#1F  i == 12 : PCG #80-#9F
	// i ==  9 : PCG #20-#3F  i == 13 : PCG #A0-#BF
	// i == 10 : PCG #40-#5F  i == 14 : PCG #C0-#DF
	// i == 11 : PCG #60-#7F  i == 15 : PCG #E0-#FF

		if (i == 13) {
			memcpy(buf, (uint8_t*)(ram + 0xE00), 0x100);
		} else if (i == 14) {
			memcpy(buf, (uint8_t*)(ram + 0xF00), 0x100);
		} else {
			memcpy(buf, (uint8_t*)(sec5 * 0x1000 + 0x100 * i), 0x100);
		}
		flash_prepare(sec, sec);
		flash_copyRAMtoFlash((uint8_t*)(sec * 0x1000 + 0x100 * i), buf, 0x100);
	}

	// erase sector5
	flash_prepare(sec5, sec5);
	flash_erase(sec5, sec5);

	// copy sec -> sector5
	for (int i = 0; i < 16; i++) {
		memcpy(buf, (void*)(sec * 0x1000 + 0x100 * i), 0x100);
		flash_prepare(sec5, sec5);
		flash_copyRAMtoFlash((uint8_t*)(sec5 * 0x1000 + 0x100 * i), buf, 0x100);
	}

	// erase sec
	flash_prepare(sec, sec);
	res = flash_erase(sec, sec);

	enable_irq();
	return res;
}