Operation Bit pattern A1 A2 A3
btst dn,dm %0000'nnn1'0000'0mmm BTSR1
btst dn,am %0000'nnn1'0000'1mmm MPIW1
btst dn,(am) %0000'nnn1'0001'0mmm ADRW1 BTSM1
btst dn,(am)+ %0000'nnn1'0001'1mmm PINW1 BTSM1
btst dn,-(am) %0000'nnn1'0010'0mmm PDCW1 BTSM1
btst dn,d16(am) %0000'nnn1'0010'1mmm ADSW1 BTSM1
btst dn,d8(am,Xl) %0000'nnn1'0011'0mmm AIXW0 BTSM1
flamewing flamewing
flamewing
/ dma-macros.asm
Last active
October 23, 2024 19:31
Some improved DMA macros, and a couple new DMA macros, for the Mega Drive
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| dmaSource function addr,((addr>>1)&$7FFFFF) | |
| dmaLength function length,((length>>1)&$7FFF) | |
| dmaCommLength function length,(($9400|((length&$FF00)>>8))<<16)|($9300|(length&$FF)) | |
| dmaCommSrcLow function source,(($9600|((source&$FF00)>>8))<<16)|($9500|(source&$FF)) | |
| dmaCommSrcHigh function source,$9700|(((source&$FF0000)>>16)&$7F) | |
| ; Tells the VDP to copy a region of 68k memory to VRAM or CRAM or VSRAM. | |
| dma68kToVDP macro src,dest,length,type,bswap | |
| if MOMPASS>1 | |
| if ((src)&1)<>0 |
flamewing
/ btst-microcode.md
Last active
September 21, 2018 14:02
Microcode analysis of M68000 btst, including missing "btst dn,#immed" from yacht.txt
Sources to go through:
- asp68k peephole optimizations: Not all are real.
- Efficient 68000 Progamming: Probably some overlap with the above.
- 68000 Tricks and Traps
- A couple 68k tricks
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| // Godbolt: https://godbolt.org/#z: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%2BgZaN7P6/ga8XqDQx7iazfjulpmClSKNMIQI9mAG5OXx0UYrUZxjsVvq0RRjkgtiAj0YWnrLzwpXEif3CKOjWfEee0dkylvyxXK1XqzXa0Z2ggOp2YdAbWh41GBBEUjBA91db5WFYVsDX0RQqH0Vgx0dQM4TGAB1ABJWUAAkAHlk1lUZIRsABNUYMMhAAlajSNlMi3lGb4/m6TFMFnQDVzwQxPDLP9mIyDV6H9e4WxmbBqO0XD6MhKQsPMHCKK9PEcJsbAGAYfF8Ookiixo2UsO0ZNzBootk2owt8IYbB7yDMYGH1ICk1TdNMzDXNrA1GDi1LctLHXasaGzQ49U/TB0mFeQ7PQlsyMtRtulYf9wNnG1CgnWd/2YC5EVEqhnJTNMMyzHM828ot638ysN0wFs2DoY |
flamewing
/ dumb_ptr.hh
Last active
February 20, 2020 13:51
Non-owning version of unique_ptr with identical interface (including array specialization)
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| /* -*- Mode: C++; indent-tabs-mode: t; c-basic-offset: 4; tab-width: 4 -*- */ | |
| /* | |
| * Copyright (C) Flamewing 2018 <[email protected]> | |
| * | |
| * This program is free software: you can redistribute it and/or modify it | |
| * under the terms of the GNU Lesser General Public License as published | |
| * by the Free Software Foundation, either version 3 of the License, or | |
| * (at your option) any later version. | |
| * | |
| * This program is distributed in the hope that it will be useful, but |
flamewing
/ [dot]clang-format
Last active
December 18, 2018 18:42
A .clang-format file with some good default values
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| Language: Cpp | |
| BasedOnStyle: LLVM | |
| AccessModifierOffset: -4 | |
| AlignAfterOpenBracket: AlwaysBreak | |
| AlignConsecutiveAssignments: true | |
| AlignConsecutiveDeclarations: true | |
| AlwaysBreakTemplateDeclarations: Yes | |
| IndentPPDirectives: AfterHash | |
| IndentWidth: 4 | |
| KeepEmptyLinesAtTheStartOfBlocks: false |
flamewing
/ [dot]clang-tidy
Last active
August 7, 2024 11:00
A .clang-tidy file with some good default checks
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| Checks: '-*,bugprone-*,cert-dcl21-cpp,cert-dcl50-cpp,cert-env33-c,cert-err34-c,cert-err52-cpp,cert-err60-cpp,cert-flp30-c,cert-msc50-cpp,cert-msc51-cpp,cppcoreguidelines-*,-cppcoreguidelines-macro-usage,-cppcoreguidelines-pro-type-reinterpret-cast,-cppcoreguidelines-pro-type-union-access,-cppcoreguidelines-pro-bounds-pointer-arithmetic,-cppcoreguidelines-pro-type-vararg,google-build-using-namespace,google-explicit-constructor,google-global-names-in-headers,google-readability-casting,google-runtime-int,google-runtime-operator,hicpp-*,-hicpp-vararg,misc-*,modernize-*,performance-*,readability-*,-readability-named-parameter' | |
| CheckOptions: | |
| - key: bugprone-argument-comment.StrictMode | |
| value: 1 | |
| - key: bugprone-exception-escape.FunctionsThatShouldNotThrow | |
| value: WinMain,SDL_main | |
| - key: misc-non-private-member-variables-in-classes.IgnoreClassesWithAllMemberVariablesBeingPublic | |
| value: 1 | |
| FormatStyle: 'file' |
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| -------------------------------------------------------------------------------- | |
| -- This file is part of the Lua HUD for TASing Sega Genesis Sonic games. | |
| -- | |
| -- This program is free software: you can redistribute it and/or modify | |
| -- it under the terms of the GNU Lesser General Public License as | |
| -- published by the Free Software Foundation, either version 3 of the | |
| -- License, or (at your option) any later version. | |
| -- | |
| -- This program is distributed in the hope that it will be useful, | |
| -- but WITHOUT ANY WARRANTY; without even the implied warranty of |
Supported logos:
- appveyor
- azuredevops
- bitcoin
- circleci
- codeship
- dependabot
- discord
flamewing
/ vscode-bash-windows.md
Last active
August 13, 2019 08:29
To use msys2 bash on VSCode, add the following to settings:
"terminal.integrated.shell.windows": "C:\\msys64\\usr\\bin\\bash.exe",
"terminal.integrated.shellArgs.windows": [
"--login",
],
"terminal.integrated.env.windows": {
"CHERE_INVOKING": "1",
"MSYSTEM": "MINGW64",OlderNewer