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Update FAIRCHILD.ino

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Modifications for reading 4K carts
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sakman55 2023-09-04 12:38:32 -10:00 committed by GitHub
parent 749d60de3f
commit 7cf03d3542
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 6 additions and 10 deletions
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Cart_Reader/FAIRCHILD.ino
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@ -456,10 +456,8 @@ void readROM_FAIRCHILD() {
} }
} }
} else if (cartsize == 0x1000) { // 4K } else if (cartsize == 0x1000) { // 4K
// Skip BIOS/Blocks Code for 4K Carts - Tested with Pro Football 4K // Skip BIOS/Blocks Code for 4K Carts - Tested with Alien Invasion/Pro Football
// Pro Football uses a DM74LS02N (Quad 2-Input NOR Gate) with two 2K ROM Chips // Alien Invasion/Pro Football both use a DM74LS02N (Quad 2-Input NOR Gate) with two 2K ROM Chips
setROMC_FAIRCHILD(0x8); // Clear PC0
setREAD_FAIRCHILD();
uint16_t offset = z * 0x200; uint16_t offset = z * 0x200;
for (int x = 0; x < 0x800 + offset; x++) { // Skip BIOS/Previous Blocks for (int x = 0; x < 0x800 + offset; x++) { // Skip BIOS/Previous Blocks
readData_FAIRCHILD(); readData_FAIRCHILD();
@ -515,12 +513,10 @@ void read16K_FAIRCHILD() // Read 16K Bytes
unsigned long cartsize = FAIRCHILD[fairchildsize] * 0x400; unsigned long cartsize = FAIRCHILD[fairchildsize] * 0x400;
for (int y = 0; y < 0x20; y++) { for (int y = 0; y < 0x20; y++) {
if (cartsize == 0x1000) { // 4K if (cartsize == 0x1000) { // 4K
// Skip BIOS/Blocks Code for 4K Carts - Tested with Pro Football 4K // Skip BIOS/Blocks Code for 4K Carts - Tested with Alien Invasion/Pro Football
// Pro Football uses a DM74LS02N (Quad 2-Input NOR Gate) with two 2K ROM Chips // Alien Invasion/Pro Football both use a DM74LS02N (Quad 2-Input NOR Gate) with two 2K ROM Chips
// IF OTHER 4K CARTS DO NOT DUMP PROPERLY USING READROM // IF CASINO POKER DOES NOT DUMP PROPERLY USING READROM
// TEST BY SETTING ROM SIZE TO 2K AND 4K THEN COMPARE 16K DUMPS // TEST BY SETTING ROM SIZE TO 2K AND 4K THEN COMPARE 16K DUMPS
setROMC_FAIRCHILD(0x8); // Clear PC0
setREAD_FAIRCHILD();
uint16_t offset = y * 0x200; uint16_t offset = y * 0x200;
for (int x = 0; x < 0x800 + offset; x++) { // Skip BIOS/Previous Blocks for (int x = 0; x < 0x800 + offset; x++) { // Skip BIOS/Previous Blocks
readData_FAIRCHILD(); readData_FAIRCHILD();
@ -917,4 +913,4 @@ void setCart_FAIRCHILD() {
#endif #endif
//****************************************** //******************************************
// End of File // End of File
//****************************************** //******************************************