6502/CLK
1
0
Fork 0
mirror of https://github.com/TomHarte/CLK.git synced 2024-11-26 08:49:37 +00:00
Code Issues Projects Releases Wiki Activity

Further improved macros.

Browse Source
This commit is contained in:
Thomas Harte 2017-05-18 22:11:54 -04:00
parent 5d3ebcb35a
commit 99f2060fc1
1 changed files with 15 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
Processors/Z80/Z80.hpp
View File

@ -92,8 +92,8 @@ struct MicroOp {
DecodeOperation,
MoveToNextProgram,
IncrementPC,
IncrementAddress,
Increment16,
Move16,
Jump,
None
@ -130,9 +130,11 @@ template <class T> class Processor: public MicroOpScheduler<MicroOp> {
void decode_base_operation(uint8_t operation) {
#define XX {MicroOp::None}
#define FETCH(x) {MicroOp::BusOperation, nullptr, nullptr, {ReadOpcode, &pc_.full, &x}}
#define FETCH_LOW() FETCH(address_.bytes.low)
#define FETCH_HIGH() FETCH(address_.bytes.high)
#define FETCH(x, y) {MicroOp::BusOperation, nullptr, nullptr, {ReadOpcode, &y.full, &x}}
#define FETCH16(x, y) FETCH(x.bytes.low, y), {MicroOp::Increment16, &y.full}, FETCH(x.bytes.high, y), {MicroOp::Increment16, &y.full}
#define FETCH16L(x, y) FETCH(x.bytes.low, y), {MicroOp::Increment16, &y.full}, FETCH(x.bytes.high, y)
#define FETCH_LOW() FETCH(address_.bytes.low, pc_)
#define FETCH_HIGH() FETCH(address_.bytes.high, pc_)
#define Program(...) { __VA_ARGS__, {MicroOp::MoveToNextProgram} }
static const MicroOp base_program_table[256][10] = {
@ -142,7 +144,7 @@ template <class T> class Processor: public MicroOpScheduler<MicroOp> {
XX, XX, XX, XX, XX, XX, XX, XX, // 0x18
XX, XX, XX, XX, XX, XX, XX, XX, // 0x20
XX, XX, // 0x28
Program(FETCH_LOW(), {MicroOp::IncrementPC}, FETCH_HIGH(), {MicroOp::IncrementPC}, FETCH(hl_.bytes.low), {MicroOp::IncrementAddress}, FETCH(hl_.bytes.high)), /* 0x2a LD HL, (nn) */
Program(FETCH16(address_, pc_), FETCH16L(hl_, address_)), /* 0x2a LD HL, (nn) */
XX, XX, XX, XX, XX,
XX, XX, XX, XX, XX, XX, XX, XX, // 0x30
XX, XX, XX, XX, XX, XX, XX, XX, // 0x38
@ -165,7 +167,7 @@ template <class T> class Processor: public MicroOpScheduler<MicroOp> {
XX, /* 0xc0 */
XX, /* 0xc1 */
XX, /* 0xc2 */
Program(FETCH_LOW(), {MicroOp::IncrementPC}, FETCH_HIGH(), {MicroOp::Jump}), /* 0xc3 JP nn */
Program(FETCH16L(address_, pc_), {MicroOp::Jump}), /* 0xc3 JP nn */
XX, /* 0xc4 */
XX, /* 0xc5 */
XX, /* 0xc6 */
@ -176,7 +178,10 @@ template <class T> class Processor: public MicroOpScheduler<MicroOp> {
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
XX,
XX,
// Progam(), /* 0xF9 LD SP, HL */
XX, XX, XX, XX, XX, XX, // 0xf8
};
if(base_program_table[operation][0].type == MicroOp::None) {
printf("Unknown Z80 operation %02x!!!\n", operation);
@ -234,9 +239,8 @@ template <class T> class Processor: public MicroOpScheduler<MicroOp> {
decode_base_operation(operation_);
break;
case MicroOp::IncrementPC: pc_.full++; break;
case MicroOp::IncrementAddress: address_.full++; break;
case MicroOp::Jump: pc_ = address_; break;
case MicroOp::Increment16: (*((uint16_t *)operation->source))++; break;
case MicroOp::Jump: pc_ = address_; break;
default:
printf("Unhandled Z80 operation %d\n", operation->type);