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Added a potential branch for the newer TOS memory map.

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This commit is contained in:
Thomas Harte 2019-10-26 16:52:06 -04:00
parent eae11cbf17
commit ecc0cea5a1
2 changed files with 12 additions and 7 deletions
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15
Machines/AtariST/AtariST.cpp
View File

@ -10,6 +10,7 @@
#include "../CRTMachine.hpp"
//#define LOG_TRACE
#include "../../Processors/68000/68000.hpp"
#include "../../Components/AY38910/AY38910.hpp"
@ -250,12 +251,16 @@ class ConcreteMachine:
memory_map_[0] = BusDevice::MostlyRAM;
int c = 1;
for(; c < 0x08; ++c) memory_map_[c] = BusDevice::RAM;
for(; c < 0xff; ++c) memory_map_[c] = BusDevice::Unassigned;
const bool is_early_tos = true;
if(is_early_tos) {
for(c = 0xfc; c < 0xff; ++c) memory_map_[c] = BusDevice::ROM;
} else {
for(c = 0xe0; c < 0xe4; ++c) memory_map_[c] = BusDevice::ROM;
}
// This is appropriate for: TOS 1.x, no cartridge.
for(; c < 0xfc; ++c) memory_map_[c] = BusDevice::Unassigned;
for(; c < 0xff; ++c) memory_map_[c] = BusDevice::ROM;
memory_map_[0xfa] = memory_map_[0xfb] = BusDevice::Cartridge;
memory_map_[0xff] = BusDevice::IO;
midi_acia_->set_interrupt_delegate(this);
@ -356,7 +361,7 @@ class ConcreteMachine:
case BusDevice::IO:
switch(address) {
default:
assert(false);
// assert(false);
case 0x7fc000:
/* Memory controller configuration:

4
Processors/68000/Implementation/68000Implementation.hpp
View File

@ -70,7 +70,7 @@ template <class T, bool dtack_is_implicit, bool signal_will_perform> void Proces
const HalfCycles remaining_duration = duration + half_cycles_left_to_run_;
#ifdef LOG_TRACE
static bool should_log = false;
static bool should_log = true;
#endif
// This loop counts upwards rather than downwards because it simplifies calculation of
@ -310,7 +310,7 @@ template <class T, bool dtack_is_implicit, bool signal_will_perform> void Proces
const uint32_t fetched_pc = (program_counter_.full - 4)&0xffffff;
// should_log |= fetched_pc == 0x6d9c;
should_log = (fetched_pc >= 0x41806A && fetched_pc <= 0x418618);
// should_log = (fetched_pc >= 0x41806A && fetched_pc <= 0x418618);
// should_log |= fetched_pc == 0x4012A2;
// should_log &= fetched_pc != 0x4012AE;