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Threw in a little macro documentation and a missing macro.

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This commit is contained in:
Thomas Harte 2017-05-21 13:13:21 -04:00
parent 790614b544
commit 232c591655
1 changed files with 12 additions and 1 deletions
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13
Processors/Z80/Z80.hpp
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@ -162,14 +162,22 @@ template <class T> class Processor: public MicroOpScheduler<MicroOp> {
#define XX {MicroOp::None, 0}
/// Fetches into x from address y, and then increments y.
#define FETCH(x, y) {MicroOp::BusOperation, nullptr, nullptr, {Read, 3, &y.full, &x}}, {MicroOp::Increment16, &y.full}
/// Fetches into x from address y.
#define FETCHL(x, y) {MicroOp::BusOperation, nullptr, nullptr, {Read, 3, &y.full, &x}}
/// Stores x to address y, and then increments y.
#define STORE(x, y) {MicroOp::BusOperation, nullptr, nullptr, {Write, 3, &y.full, &x}}, {MicroOp::Increment16, &y.full}
/// Stores x to address y.
#define STOREL(x, y) {MicroOp::BusOperation, nullptr, nullptr, {Write, 3, &y.full, &x}}
/// Fetches the 16-bit quantity x from address y, incrementing y twice.
#define FETCH16(x, y) FETCH(x.bytes.low, y), FETCH(x.bytes.high, y)
/// Fetches the 16-bit quantity x from address y, incrementing y once.
#define FETCH16L(x, y) FETCH(x.bytes.low, y), FETCHL(x.bytes.high, y)
/// Stores the 16-bit quantity x to address y, incrementing y once.
#define STORE16L(x, y) STORE(x.bytes.low, y), STOREL(x.bytes.high, y)
#define PUSH(x) {MicroOp::Decrement16, &sp_.full}, STOREL(x.bytes.high, sp_), {MicroOp::Decrement16, &sp_.full}, STOREL(x.bytes.low, sp_)
@ -403,7 +411,10 @@ template <class T> class Processor: public MicroOpScheduler<MicroOp> {
void decode_operation(uint8_t operation) {
if(current_instruction_page_[operation]->type == MicroOp::None) {
printf("Unknown Z80 operation %02x!!!\n", operation);
uint8_t page = 0x00;
if(current_instruction_page_ == ed_page_) page = 0xed;
if(current_instruction_page_ == fd_page_) page = 0xfd;
printf("Unknown Z80 operation %02x %02x!!!\n", page, operation);
}
schedule_program(current_instruction_page_[operation]);
}