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Forward address information to a video stub.

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This commit is contained in:
Thomas Harte 2024-12-10 21:28:46 -05:00
parent 891d5c2066
commit 38325741de
3 changed files with 95 additions and 2 deletions
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14
Machines/Commodore/Plus4/Plus4.cpp
View File

@ -8,10 +8,10 @@
#include "Plus4.hpp"
#include "Video.hpp"
#include "../../MachineTypes.hpp"
#include "../../../Processors/6502/6502.hpp"
#include "../../../Analyser/Static/Commodore/Target.hpp"
using namespace Commodore::Plus4;
@ -207,6 +207,15 @@ public:
case 0xff04: timers_.write<4>(*value); break;
case 0xff05: timers_.write<5>(*value); break;
case 0xff06: video_.write<0xff06>(*value); break;
case 0xff07: video_.write<0xff07>(*value); break;
case 0xff0c: video_.write<0xff0c>(*value); break;
case 0xff0d: video_.write<0xff0d>(*value); break;
case 0xff12: video_.write<0xff12>(*value); break;
case 0xff14: video_.write<0xff14>(*value); break;
case 0xff1a: video_.write<0xff1a>(*value); break;
case 0xff1b: video_.write<0xff1b>(*value); break;
default:
printf("TODO: TED write at %04x\n", address);
}
@ -241,6 +250,7 @@ private:
Cycles timers_subcycles_;
Timers timers_;
Video video_;
};
}

81
Machines/Commodore/Plus4/Video.hpp Normal file
View File

@ -0,0 +1,81 @@
//
// Video.hpp
// Clock Signal
//
// Created by Thomas Harte on 10/12/2024.
// Copyright © 2024 Thomas Harte. All rights reserved.
//
#pragma once
namespace Commodore::Plus4 {
struct Video {
public:
template <uint16_t address>
void write(const uint8_t value) {
const auto load_high10 = [&](uint16_t &target) {
target = uint16_t(
(target & 0x00ff) | ((value & 0x3) << 8)
);
};
const auto load_low8 = [&](uint16_t &target) {
target = uint16_t(
(target & 0xff00) | value
);
};
switch(address) {
case 0xff06:
extended_colour_mode_ = value & 0x40;
bitmap_mode_ = value & 0x20;
display_enable_ = value & 0x10;
rows_25_ = value & 8;
y_scroll_ = value & 7;
break;
case 0xff07:
characters_256_ = value & 0x80;
is_ntsc_ = value & 0x40;
ted_off_ = value & 0x20;
multicolour_mode_ = value & 0x10;
columns_40_ = value & 8;
x_scroll_ = value & 7;
break;
case 0xff12:
character_generator_address_ = uint16_t((value & 0xfc) << 8);
break;
case 0xff14:
screen_memory_address_ = uint16_t((value & 0xf8) << 8);
break;
case 0xff0c: load_high10(cursor_address_); break;
case 0xff0d: load_low8(cursor_address_); break;
case 0xff1a: load_high10(character_row_address_); break;
case 0xff1b: load_low8(character_row_address_); break;
}
}
private:
bool extended_colour_mode_ = false;
bool bitmap_mode_ = false;
bool display_enable_ = false;
bool rows_25_ = false;
int y_scroll_ = 0;
bool characters_256_ = false;
bool is_ntsc_ = false;
bool ted_off_ = false;
bool multicolour_mode_ = false;
bool columns_40_ = false;
int x_scroll_ = 0;
uint16_t cursor_address_ = 0;
uint16_t character_row_address_ = 0;
uint16_t character_generator_address_ = 0;
uint16_t screen_memory_address_ = 0;
};
}

2
OSBindings/Mac/Clock Signal.xcodeproj/project.pbxproj
View File

@ -1296,6 +1296,7 @@
42EB812C2B47008D00429AF4 /* MemoryMap.cpp */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.cpp; path = MemoryMap.cpp; sourceTree = "<group>"; };
4B018B88211930DE002A3937 /* 65C02_extended_opcodes_test.bin */ = {isa = PBXFileReference; lastKnownFileType = archive.macbinary; name = 65C02_extended_opcodes_test.bin; path = "Klaus Dormann/65C02_extended_opcodes_test.bin"; sourceTree = "<group>"; };
4B01A6871F22F0DB001FD6E3 /* Z80MemptrTests.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = Z80MemptrTests.swift; sourceTree = "<group>"; };
4B03291F2D0923E300C51EB5 /* Video.hpp */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.h; path = Video.hpp; sourceTree = "<group>"; };
4B0333AD2094081A0050B93D /* AppleDSK.cpp */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.cpp; path = AppleDSK.cpp; sourceTree = "<group>"; };
4B0333AE2094081A0050B93D /* AppleDSK.hpp */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.h; path = AppleDSK.hpp; sourceTree = "<group>"; };
4B046DC31CFE651500E9E45E /* ScanProducer.hpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.h; path = ScanProducer.hpp; sourceTree = "<group>"; };
@ -3393,6 +3394,7 @@
children = (
4B596EAF2D037E8800FBF4B1 /* Plus4.hpp */,
4B596EB02D037E8800FBF4B1 /* Plus4.cpp */,
4B03291F2D0923E300C51EB5 /* Video.hpp */,
);
path = Plus4;
sourceTree = "<group>";