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Reduce magic constants.

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This commit is contained in:
Thomas Harte 2024-03-11 14:49:03 -04:00
parent e8c1e8fd3f
commit e7457461ba
2 changed files with 37 additions and 14 deletions
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45
Machines/Acorn/Archimedes/Archimedes.cpp
View File

@ -151,7 +151,21 @@ struct Video {
}
};
// IRQ A flags
namespace IRQA {
// The first four of these are taken from the A500 documentation and may be inaccurate.
static constexpr uint8_t PrinterBusy = 0x01;
static constexpr uint8_t SerialRinging = 0x02;
static constexpr uint8_t PrinterAcknowledge = 0x04;
static constexpr uint8_t VerticalFlyback = 0x08;
static constexpr uint8_t PowerOnReset = 0x10;
static constexpr uint8_t Timer0 = 0x20;
static constexpr uint8_t Timer1 = 0x40;
static constexpr uint8_t SetAlways = 0x80;
}
struct Interrupts {
bool tick_timers() {
bool did_change_interrupts = false;
@ -263,7 +277,7 @@ struct Interrupts {
}
Interrupts() {
irq_a_.status = 0x80 | 0x10; // i.e. 'set always' + 'power-on'.
irq_a_.status = IRQA::SetAlways | IRQA::PowerOnReset;
irq_b_.status = 0x00;
fiq_.status = 0x80; // 'set always'.
}
@ -307,6 +321,10 @@ struct Memory {
return false;
}
if(address == 0x02000078 || address == 0x02400078) {
printf("%08x: %08x\n", address, source);
}
switch (write_zones_[(address >> 21) & 31]) {
case Zone::DMAAndMEMC:
if((address & 0b1110'0000'0000'0000'0000) == 0b1110'0000'0000'0000'0000) {
@ -384,7 +402,6 @@ struct Memory {
switch (read_zones_[(address >> 21) & 31]) {
case Zone::PhysicallyMappedRAM:
// if(mode != InstructionSet::ARM::Mode::Supervisor) return false;
source = physical_ram<IntT>(address);
return true;
@ -456,12 +473,8 @@ struct Memory {
template <typename IntT>
IntT &physical_ram(uint32_t address) {
address &= ram_.size() - 1;
if(address == (0x02000074 & (ram_.size() - 1))) {
printf("%08x\n", address);
}
return *reinterpret_cast<IntT *>(&ram_[address]);
const auto access_address = address & (ram_.size() - 1);
return *reinterpret_cast<IntT *>(&ram_[access_address]);
}
template <typename IntT>
@ -741,12 +754,22 @@ class ConcreteMachine:
// printf("");
// }
// log |= (executor_.pc() > 0 && executor_.pc() < 0x03800000);
// log |= executor_.pc() == 0x38008e0;
// log |= executor_.pc() == 0x02000078;
// log |= (executor_.pc() > 0x03801000);
// log &= (executor_.pc() != 0x038019f8);
// if(executor_.pc() == 0x38008e0) //0x038019f8)
// return;
if(executor_.pc() == 0x02000078) {
if(!all.empty()) {
int c = 0;
for(auto instr: all) {
printf("0x%08x, ", instr);
++c;
if(!(c&31)) printf("\n");
}
all.clear();
}
return;
}
if(log) {
auto info = logger.info();

6
OSBindings/Mac/Clock SignalTests/ARMDecoderTests.mm
View File

@ -425,9 +425,9 @@ struct MemoryLedger {
continue;
}
// if(instruction == 0xe090f00e && test_count == 1) {
// printf("");
// }
if(instruction == 0xe1a0f001 && test_count == 1) {
printf("");
}
execute(instruction, *test);
NSMutableString *error = nil;