6502/CLK
1
0
Fork 0
mirror of https://github.com/TomHarte/CLK.git synced 2024-12-26 09:29:45 +00:00
Code Issues Projects Releases Wiki Activity

Resolves a further 11 conversion errors.

Browse Source
This commit is contained in:
Thomas Harte 2019-06-04 16:34:45 -04:00
parent 5b21da7874
commit 51ee83a427
1 changed files with 11 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
Processors/68000/Implementation/68000Implementation.hpp
View File

@ -960,7 +960,7 @@ template <class T, bool dtack_is_implicit, bool signal_will_perform> void Proces
const uint16_t remainder = uint16_t(dividend % divisor);
active_program_->destination->halves.high.full = remainder;
active_program_->destination->halves.low.full = quotient;
active_program_->destination->halves.low.full = uint16_t(quotient);
overflow_flag_ = 0;
zero_result_ = quotient;
@ -1020,14 +1020,14 @@ template <class T, bool dtack_is_implicit, bool signal_will_perform> void Proces
}
overflow_flag_ = 0;
zero_result_ = quotient;
zero_result_ = decltype(zero_result_)(quotient);
negative_flag_ = zero_result_ & 0x8000;
// TODO: check sign rules here; am I necessarily giving the remainder the correct sign?
// (and, if not, am I counting it in the correct direction?)
const uint16_t remainder = uint16_t(dividend % divisor);
active_program_->destination->halves.high.full = remainder;
active_program_->destination->halves.low.full = quotient;
active_program_->destination->halves.low.full = uint16_t(quotient);
// Algorithm here: there is a fixed three-microcycle cost per bit set
// in the unsigned quotient; there is an additional microcycle for
@ -1287,10 +1287,10 @@ template <class T, bool dtack_is_implicit, bool signal_will_perform> void Proces
const int destination = 0;
const int source = active_program_->destination->halves.low.halves.low;
const auto result = destination - source;
active_program_->destination->halves.low.halves.low = result;
active_program_->destination->halves.low.halves.low = uint8_t(result);
zero_result_ = result & 0xff;
extend_flag_ = carry_flag_ = result & ~0xff;
extend_flag_ = carry_flag_ = decltype(carry_flag_)(result & ~0xff);
negative_flag_ = result & 0x80;
overflow_flag_ = sub_overflow() & 0x80;
} break;
@ -1299,10 +1299,10 @@ template <class T, bool dtack_is_implicit, bool signal_will_perform> void Proces
const int destination = 0;
const int source = active_program_->destination->halves.low.full;
const auto result = destination - source;
active_program_->destination->halves.low.full = result;
active_program_->destination->halves.low.full = uint16_t(result);
zero_result_ = result & 0xffff;
extend_flag_ = carry_flag_ = result & ~0xffff;
extend_flag_ = carry_flag_ = decltype(carry_flag_)(result & ~0xffff);
negative_flag_ = result & 0x8000;
overflow_flag_ = sub_overflow() & 0x8000;
} break;
@ -1326,10 +1326,10 @@ template <class T, bool dtack_is_implicit, bool signal_will_perform> void Proces
const int source = active_program_->destination->halves.low.halves.low;
const int destination = 0;
const auto result = destination - source - (extend_flag_ ? 1 : 0);
active_program_->destination->halves.low.halves.low = result;
active_program_->destination->halves.low.halves.low = uint8_t(result);
zero_result_ = result & 0xff;
extend_flag_ = carry_flag_ = result & ~0xff;
extend_flag_ = carry_flag_ = decltype(carry_flag_)(result & ~0xff);
negative_flag_ = result & 0x80;
overflow_flag_ = sub_overflow() & 0x80;
} break;
@ -1338,10 +1338,10 @@ template <class T, bool dtack_is_implicit, bool signal_will_perform> void Proces
const int source = active_program_->destination->halves.low.full;
const int destination = 0;
const auto result = destination - source - (extend_flag_ ? 1 : 0);
active_program_->destination->halves.low.full = result;
active_program_->destination->halves.low.full = uint16_t(result);
zero_result_ = result & 0xffff;
extend_flag_ = carry_flag_ = result & ~0xffff;
extend_flag_ = carry_flag_ = decltype(carry_flag_)(result & ~0xffff);
negative_flag_ = result & 0x8000;
overflow_flag_ = sub_overflow() & 0x8000;
} break;