MiSTer updates and changelog

[Sorgelig]

C64:
- SID6581: subtract filter instead of summing (Henrik Nordström).
- SID6581: reworked waveform mixer.
- SID6581: added option for different SID filters. Loadable custom filters.
- OSD menu rework.
- Updated framework.

[FPGAzumSpass]

AtariLynx:
- new multislot savestate handling with gamepad support

[Sorgelig]

C64:
- SID 6581: rework envelope generator (fixes Mostro Giganto).
- SID 6581: other fixes and tweaks.
- SID 8580: allow noise to be mixed with voices.

[FPGAzumSpass]

GBA:
- new multislot savestate handling with gamepad support
- automatic detection for max sprite pixel games
- fix mosaic 1 line offset
- fix mosaic in mode 3-5
- fix sprite alpha bit degrading to brighter/darker special effect if no second target is found

[jimmystones]

Robotron
- Improve game speed accuracy (vlait)
- Fix vertical positioning
- Reduce audio volume
- Add pause

[Sorgelig]

C64:
- Support 8-bit DAC mode (Monstro Giganto, Musik Run/Stop) in 6581/8580.
- Various fixes and tweaks in 6581/8580.

[Kitrinx]

New Core: Atari 7800
- Plays entire 7800 library
- Many sound chips supported
- Supports games up to 1mb
- SDRAM Required

Please note, 2600 is not yet enabled. Read the readme for more information.

[Sorgelig]

Main:
- Fix memory leak on core load.
- Support direct DDR3 loading by F option.
- OSD fixes.

[jimmystones]

Lady Bug
- Merged Snap Jack, Dorodon and Cosmic Avenger into Lady Bug core
- All games updated with full DIP switches
- All games now have high score save/load and pause

Note: Due changes in input layout you may need to use Reset Settings and remap controls

[Sorgelig]

Hardware - New SDRAM v2.9:
- LDO on board for stable and less noisy power supply to chips.
- SMT connector for easier assembling.

[jimmystones]

Pacman
- Added pause

(applies to Pac-Man, Alibaba and 40 Thieves, Birdiy, Crush Roller, Dream Shopper, Eeekk!, Eggor, Eyes, Gorkans, Jump Shot, Lizard Wizard, Mr. TNT, Ms. Pac-Man, Pac-Man Club, Pac-Man Plus, Pac Manic Miner Man, Ponpoko, Super Glob, Van-Van Car, and Woodpecker)

[jimmystones]

Zaxxon
- Fix colours in Zaxxon / Super Zaxxon
- Add pause

[Sorgelig]

C64:
- SID: Use common module for both 6581 and 8580 chips.
- SID: rewrite 6581 filters with hopefully better resemble of original 6581 sound.
- Keyboard: re-arrange some keys (shifted 6-0, swap + and = buttons, better simulation of compound keys).

[Sorgelig]

C64:
- Fix PRG autorun
- Adjust OPL volume.

[Sorgelig]

C64:
- OSD option to reset disk drives.
- SID: simulate DAC floating input (fix for sampled music).
- Add DigiMax.

[Sorgelig]

ZX Spectrum:
- Fix show effect (snow test passed).
- Some refactoring and tweaks for ports access (timings test passed).
- Option to enable mouse and select L/R buttons swap.
- Updated T80.

[jimmystones]

Defender
- Add pause
- Reduce audio volume

[Sorgelig]

NES:
- Save states and pause (Robert Peip).
- Improvements to mapper 2 and other fixes (Greyrogue)
- Option to store custom palette.

[jimmystones]

Pooyan
- Add highscore save/load
- Add pause
- Update sys

[Sorgelig]

Main:
- OSD: backspace to clear FC option.
- Add OSD_MSG flag for non-interactive windows (for cores having pause when OSD is open).
- input: fix wrong dir creation.

[Sorgelig]

C64:
- SID: use common adjusted resonance table.
- SID: add curve generator (in release folder, use web browser to generate curves).
- Automatic reset before PRG loading.
- Add pause option when OSD is opened.
- keyboard: map extended PS/2 keys, swap pound/arrow-up keys.
- C1541: support fast disk access through parallel mode (Dolphin, SpeedDOS), extended 8KB RAM and up to 24KB ROM support.
- C1541: various fixes and tweaks.
- Option to load System ROM (fixed-name boot.rom isn't required anymore).
- Option to disable memory clear upon reset (to use some debuggers).
- Option to release keys upon reset (to prevent automatic enter to debugger in some ROMs like Dolphin).
- Fix TOD(RTC) clock.
- DolphinDOS and SpeedDOS are provided (abandon-ware) as an option for System ROM.
- Other fixes and tweaks. Please read updated ReadMe!

Note: you have to update Main to latest one (or PRG loading will hang)!

[Sorgelig]

C64:
- C1541: fix: some fast loaders didn't work in previous release.
- RAM now always get cleared before PRG and CRT load regardless the option.
- Boot cart option (OSD->Hardware), so boot3.rom isn't used anymore.

[Sorgelig]

Gameboy:
- New mappers: MBC30, MBC7, GB Camera (paulb-nl).
- Fixes in PPU and CPU (paulb-nl).
- Improved savestates (Robert Peip).
- MiSTer themed borders pack (birdybro).
- Updated framework.

[Sorgelig]

C64:
- C1541: Fix: unable to load from disk if loadable ROM is selected but ROM isn't loaded.
- C1541: Preloaded DolphinDOS 2.0 into loadable ROM as default one. Fast Disk expansion enabled by default default.
- OSD options rename to avoid confusions.
- Add C128 and Smart turbo modes.
- Option to disable reset and run PRG on loading.
- Fix joysticks connection on C64 expansion port.

[alanswx]

SVI 328
- New core by fpganoob

[Sorgelig]

C64:
- Fix IEC signal latch (Turrican III loader).
- VIC: fix xscroll latch time (Memento Mori and Comaland demos).
- CIA: fix SP and CNT signals (RS232 UP9600 mode).
- Add RS232 HW control signals.
- Implement RS232 UP9600 mode with up to 9600 baud rate.
- Parallel disk connection now co-exists with other expansion options.

[Sorgelig]

Main:
- Some refactoring in Minimig options.
- Add 4800 baud to UART speeds.
- Optimized arcade rom deinterleaver (blackwine).
- user_io: don't write beyond existing file size if not savefile.
- Menu: some fixes and tweaks in navigation.

[Sorgelig]

C64:
- cartridge: support for Retro Replay and Atomic/Action/Nordic Power.
- Support for REU up to 16MB.
- Support for GeoRAM 4MB.
- Adjust PAL border.
- Some internal fixes and tweaks.

[Sorgelig]

C64:
- Fixed RESTORE key.
- Added some keys to joystick for keyboardless use. Please read the updated ReadMe about how to use it.

[Sorgelig]

C64:
- Joystick simulates SPACE and CTRL on Fire2/3 if not connected to POT.