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V19F: Fixed timing for GBA 1M flashrom save games

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sanni 2016-10-06 23:04:31 +02:00 committed by GitHub
parent 7b03f32968
commit 861998b155
2 changed files with 10 additions and 10 deletions
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6
Cart_Reader/Cart_Reader.ino
View File

@ -2,8 +2,8 @@
Cartridge Reader for Arduino Mega2560
Author: sanni
Date: 2016-10-05
Version: V19E
Date: 2016-10-06
Version: V19F
SD lib: https://github.com/greiman/SdFat
LCD lib: https://github.com/adafruit/Adafruit_SSD1306
@ -34,7 +34,7 @@
YamaArashi - GBA flashrom bank switch command
**********************************************************************************/
char ver[5] = "V19E";
char ver[5] = "V19F";
/******************************************
Define Output

14
Cart_Reader/GBA.ino
View File

@ -241,7 +241,7 @@ void gbaMenu() {
println_Msg(F("Flashrom Type not supported"));
print_Msg(F("ID: "));
println_Msg(flashid);
print_Error(F(":("), true);
print_Error(F(""), true);
}
eraseFLASH_GBA();
if (blankcheckFLASH_GBA(65536)) {
@ -264,7 +264,7 @@ void gbaMenu() {
println_Msg(F("Flashrom Type not supported"));
print_Msg(F("ID: "));
println_Msg(flashid);
print_Error(F(":("), true);
print_Error(F(""), true);
}
eraseFLASH_GBA();
// 131072 bytes are divided into two 65536 byte banks
@ -932,13 +932,13 @@ byte readByteFlash_GBA(unsigned long myAddress) {
PORTK = (myAddress >> 8) & 0xFF;
// Wait until byte is ready to read
__asm__("nop\n\t""nop\n\t");
__asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t");
// Read byte
byte tempByte = PINC;
// Arduino running at 16Mhz -> one nop = 62.5ns
__asm__("nop\n\t");
__asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t");
return tempByte;
}
@ -950,19 +950,19 @@ void writeByteFlash_GBA(unsigned long myAddress, byte myData) {
// Arduino running at 16Mhz -> one nop = 62.5ns
// Wait till output is stable
__asm__("nop\n\t");
__asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t");
// Switch WE_FLASH(PH5) to LOW
PORTH &= ~(1 << 5);
// Leave WE low for at least 40ns
__asm__("nop\n\t");
__asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t");
// Switch WE_FLASH(PH5) to HIGH
PORTH |= (1 << 5);
// Leave WE high for a bit
__asm__("nop\n\t");
__asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t");
}
// Erase FLASH