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Implemented JP, my first Z80 operation.

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Thomas Harte 2017-05-17 22:31:41 -04:00
parent 17ffd604bf
commit 509d011fbe
1 changed files with 58 additions and 45 deletions
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103
Processors/Z80/Z80.hpp
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@ -90,7 +90,12 @@ struct MicroOp {
enum {
BusOperation,
DecodeOperation,
MoveToNextProgram
MoveToNextProgram,
IncrementPC,
Jump,
None
} type;
void *source;
void *destination;
@ -120,45 +125,56 @@ template <class T> class Processor: public MicroOpScheduler<MicroOp> {
const MicroOp **program_table_;
uint8_t operation_;
RegisterPair address_;
void decode_base_operation(uint8_t operation) {
#define XX nullptr
static const MicroOp *base_program_table[256] = {
XX, XX, XX, XX, XX, XX, XX, XX,
XX, XX, XX, XX, XX, XX, XX, XX,
XX, XX, XX, XX, XX, XX, XX, XX,
XX, XX, XX, XX, XX, XX, XX, XX,
XX, XX, XX, XX, XX, XX, XX, XX,
XX, XX, XX, XX, XX, XX, XX, XX,
XX, XX, XX, XX, XX, XX, XX, XX,
XX, XX, XX, XX, XX, XX, XX, XX,
XX, XX, XX, XX, XX, XX, XX, XX,
XX, XX, XX, XX, XX, XX, XX, XX,
XX, XX, XX, XX, XX, XX, XX, XX,
XX, XX, XX, XX, XX, XX, XX, XX,
XX, XX, XX, XX, XX, XX, XX, XX,
XX, XX, XX, XX, XX, XX, XX, XX,
XX, XX, XX, XX, XX, XX, XX, XX,
XX, XX, XX, XX, XX, XX, XX, XX,
XX, XX, XX, XX, XX, XX, XX, XX,
XX, XX, XX, XX, XX, XX, XX, XX,
XX, XX, XX, XX, XX, XX, XX, XX,
XX, XX, XX, XX, XX, XX, XX, XX,
XX, XX, XX, XX, XX, XX, XX, XX,
XX, XX, XX, XX, XX, XX, XX, XX,
XX, XX, XX, XX, XX, XX, XX, XX,
XX, XX, XX, XX, XX, XX, XX, XX,
XX, XX, XX, XX, XX, XX, XX, XX,
XX, XX, XX, XX, XX, XX, XX, XX,
XX, XX, XX, XX, XX, XX, XX, XX,
XX, XX, XX, XX, XX, XX, XX, XX,
XX, XX, XX, XX, XX, XX, XX, XX,
XX, XX, XX, XX, XX, XX, XX, XX,
XX, XX, XX, XX, XX, XX, XX, XX,
XX, XX, XX, XX, XX, XX, XX, XX,
#define XX {MicroOp::None}
#define FETCH_LOW() {MicroOp::BusOperation, nullptr, nullptr, {ReadOpcode, &pc_.full, &address_.bytes.low}}
#define FETCH_HIGH() {MicroOp::BusOperation, nullptr, nullptr, {ReadOpcode, &pc_.full, &address_.bytes.high}}
static const MicroOp base_program_table[256][10] = {
XX, XX, XX, XX, XX, XX, XX, XX, // 0x00
XX, XX, XX, XX, XX, XX, XX, XX, // 0x08
XX, XX, XX, XX, XX, XX, XX, XX, // 0x10
XX, XX, XX, XX, XX, XX, XX, XX, // 0x18
XX, XX, XX, XX, XX, XX, XX, XX, // 0x20
XX, XX, XX, XX, XX, XX, XX, XX, // 0x28
XX, XX, XX, XX, XX, XX, XX, XX, // 0x30
XX, XX, XX, XX, XX, XX, XX, XX, // 0x38
XX, XX, XX, XX, XX, XX, XX, XX, // 0x40
XX, XX, XX, XX, XX, XX, XX, XX, // 0x48
XX, XX, XX, XX, XX, XX, XX, XX, // 0x50
XX, XX, XX, XX, XX, XX, XX, XX, // 0x58
XX, XX, XX, XX, XX, XX, XX, XX, // 0x60
XX, XX, XX, XX, XX, XX, XX, XX, // 0x68
XX, XX, XX, XX, XX, XX, XX, XX, // 0x70
XX, XX, XX, XX, XX, XX, XX, XX, // 0x78
XX, XX, XX, XX, XX, XX, XX, XX, // 0x80
XX, XX, XX, XX, XX, XX, XX, XX, // 0x88
XX, XX, XX, XX, XX, XX, XX, XX, // 0x90
XX, XX, XX, XX, XX, XX, XX, XX, // 0x98
XX, XX, XX, XX, XX, XX, XX, XX, // 0xa0
XX, XX, XX, XX, XX, XX, XX, XX, // 0xa8
XX, XX, XX, XX, XX, XX, XX, XX, // 0xb0
XX, XX, XX, XX, XX, XX, XX, XX, // 0xb8
XX, /* 0xc0 */
XX, /* 0xc1 */
XX, /* 0xc2 */
{ FETCH_LOW(), {MicroOp::IncrementPC}, FETCH_HIGH(), {MicroOp::Jump}, {MicroOp::MoveToNextProgram}}, /* 0xc3 JP nnnn */
XX, /* 0xc4 */
XX, /* 0xc5 */
XX, /* 0xc6 */
XX, /* 0xc7 */
XX, XX, XX, XX, XX, XX, XX, XX, // 0xc8
XX, XX, XX, XX, XX, XX, XX, XX, // 0xd0
XX, XX, XX, XX, XX, XX, XX, XX, // 0xd8
XX, XX, XX, XX, XX, XX, XX, XX, // 0xe0
XX, XX, XX, XX, XX, XX, XX, XX, // 0xe8
XX, XX, XX, XX, XX, XX, XX, XX, // 0xf0
XX, XX, XX, XX, XX, XX, XX, XX, // 0xf8
};
if(!base_program_table[operation]) {
printf("Unknown Z80 operation %02x!!!\n", operation_);
if(base_program_table[operation][0].type == MicroOp::None) {
printf("Unknown Z80 operation %02x!!!\n", operation);
}
schedule_program(base_program_table[operation]);
// program_table_ = base_program_table;
@ -208,16 +224,13 @@ template <class T> class Processor: public MicroOpScheduler<MicroOp> {
move_to_next_program();
checkSchedule();
break;
case MicroOp::DecodeOperation: {
case MicroOp::DecodeOperation:
pc_.full++;
decode_base_operation(operation_);
// const MicroOp *next_operation = program_table_[operation_];
// if(!next_operation) {
// printf("Unknown Z80 operation %02x!!!\n", operation_);
// return;
// }
// schedule_program(next_operation);
} break;
break;
case MicroOp::IncrementPC: pc_.full++; break;
case MicroOp::Jump: pc_ = address_; break;
default:
printf("Unhandled Z80 operation %d\n", operation->type);