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Pulls out a couple of repeating constants.

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This commit is contained in:
Thomas Harte 2018-05-09 20:28:25 -04:00
parent b09b4b4433
commit 312171fa59
1 changed files with 7 additions and 4 deletions
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11
Machines/Oric/Oric.cpp
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@ -399,7 +399,7 @@ template <Analyser::Static::Oric::Target::DiskInterface disk_interface> class Co
else { else {
switch(address) { switch(address) {
case 0x380: case 0x381: case 0x382: case 0x383: case 0x380: case 0x381: case 0x382: case 0x383:
ram_top_ = (address&1) ? 0xffff : 0xbfff; ram_top_ = (address&1) ? basic_invisible_ram_top_ : basic_visible_ram_top_;
pravetz_rom_base_pointer_ = (address&2) ? 0x100 : 0x000; pravetz_rom_base_pointer_ = (address&2) ? 0x100 : 0x000;
break; break;
} }
@ -496,11 +496,11 @@ template <Analyser::Static::Oric::Target::DiskInterface disk_interface> class Co
void microdisc_did_change_paging_flags(class Microdisc *microdisc) override final { void microdisc_did_change_paging_flags(class Microdisc *microdisc) override final {
int flags = microdisc->get_paging_flags(); int flags = microdisc->get_paging_flags();
if(!(flags&Microdisc::PagingFlags::BASICDisable)) { if(!(flags&Microdisc::PagingFlags::BASICDisable)) {
ram_top_ = 0xbfff; ram_top_ = basic_invisible_ram_top_;
paged_rom_ = rom_.data(); paged_rom_ = rom_.data();
} else { } else {
if(flags&Microdisc::PagingFlags::MicrodscDisable) { if(flags&Microdisc::PagingFlags::MicrodscDisable) {
ram_top_ = 0xffff; ram_top_ = basic_visible_ram_top_;
} else { } else {
ram_top_ = 0xdfff; ram_top_ = 0xdfff;
paged_rom_ = microdisc_rom_.data(); paged_rom_ = microdisc_rom_.data();
@ -552,6 +552,9 @@ template <Analyser::Static::Oric::Target::DiskInterface disk_interface> class Co
} }
private: private:
const uint16_t basic_invisible_ram_top_ = 0xffff;
const uint16_t basic_visible_ram_top_ = 0xbfff;
CPU::MOS6502::Processor<ConcreteMachine, false> m6502_; CPU::MOS6502::Processor<ConcreteMachine, false> m6502_;
// RAM and ROM // RAM and ROM
@ -598,7 +601,7 @@ template <Analyser::Static::Oric::Target::DiskInterface disk_interface> class Co
} }
// Overlay RAM // Overlay RAM
uint16_t ram_top_ = 0xbfff; uint16_t ram_top_ = basic_visible_ram_top_;
uint8_t *paged_rom_ = nullptr; uint8_t *paged_rom_ = nullptr;
// Helper to discern current IRQ state // Helper to discern current IRQ state