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DS Slot-1: Implement chip ID

This commit is contained in:
Vicki Pfau 2017-02-22 21:01:39 -08:00
parent 495ca50dc0
commit bdf8f73ba5
3 changed files with 10 additions and 0 deletions
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1
include/mgba/internal/ds/ds.h
View File

@ -20,6 +20,7 @@ CXX_GUARD_START
extern const uint32_t DS_ARM946ES_FREQUENCY;
extern const uint32_t DS_ARM7TDMI_FREQUENCY;
extern const uint8_t DS_CHIP_ID[4];
enum DSIRQ {
DS_IRQ_VBLANK = 0x0,

5
src/ds/ds.c
View File

@ -23,6 +23,7 @@ mLOG_DEFINE_CATEGORY(DS, "DS");
const uint32_t DS_ARM946ES_FREQUENCY = 0x1FF61FE;
const uint32_t DS_ARM7TDMI_FREQUENCY = 0xFFB0FF;
const uint32_t DS_COMPONENT_MAGIC = 0x1FF61FE;
const uint8_t DS_CHIP_ID[4] = { 0xC2, 0x0F, 0x00, 0x00 };
static const size_t DS_ROM_MAGIC_OFFSET = 0x15C;
static const uint8_t DS_ROM_MAGIC[] = { 0x56, 0xCF };
@ -278,6 +279,10 @@ void DS7Reset(struct ARMCore* cpu) {
struct DSCartridge* header = ds->romVf->map(ds->romVf, sizeof(*header), MAP_READ);
if (header) {
memcpy(&ds->memory.ram[0x3FF800 >> 2], DS_CHIP_ID, 4);
memcpy(&ds->memory.ram[0x3FF804 >> 2], DS_CHIP_ID, 4);
memcpy(&ds->memory.ram[0x3FFC00 >> 2], DS_CHIP_ID, 4);
memcpy(&ds->memory.ram[0x3FFC04 >> 2], DS_CHIP_ID, 4);
memcpy(&ds->memory.ram[0x3FFE00 >> 2], header, 0x170);
DS7IOWrite32(ds, DS_REG_ROMCNT_LO, header->busTiming | 0x2700000);
// TODO: Error check

4
src/ds/slot1.c
View File

@ -50,6 +50,10 @@ static void DSSlot1StartTransfer(struct DS* ds) {
ds->memory.slot1.transferRemaining = ds->memory.slot1.transferSize;
DSSlot1StepTransfer(ds);
break;
case 0xB8:
memcpy(ds->memory.slot1.readBuffer, DS_CHIP_ID, 4);
ds->memory.slot1.transferRemaining = 0;
break;
default:
mLOG(DS_SLOT1, STUB, "Unimplemented card command: %02X%02X%02X%02X%02X%02X%02X%02X",
ds->memory.slot1.command[0], ds->memory.slot1.command[1],